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2025 Miller Research Potato Pest Management Seminar
Potato All Locations
Posted on: February 6, 2025 by Jeff Miller
Come to the Miller Research Potato Pest Management Meeting Tuesday, Feb. 18 from 9:00 to 1:00 at the Wilson Theater in Rupert. The cost to attend is $35 and 3 ISDA and 3 CCA IPM credits are available. Lunch will be provided. After covering meeting costs, the remaining funds will be donated to the 4-H program. Contact Cheryn Suarez at cheryn@millerresearch.com if you have any questions.
More information can be found at the attached link.
Reminder! Take up Annual Survey 2024
All Crops All Locations
Survey Reminder
Posted on: November 22, 2024 by Jemila Chellappa
Reminder!
Take the 2024 Pest Alert Network Annual Survey and Win
Crops and Small Farms Subscribers: https://uidaho.co1.qualtrics.com/jfe/form/SV_6M7izVGWJ1pDGKy
Landscape and Gardens Subscribers:
https://uidaho.co1.qualtrics.com/jfe/form/SV_7af2iQJTcXSVZMq
We’re inviting you to participate in the 2024 Pest Alert Network Annual Survey focused on pest management. Your valuable input will help us understand pest trends and control methods and improve the Pest Alert Network!
Why Participate?
• Share your experience in pest control & management
• Help improve our pest alert services
• 3 lucky participants will be randomly selected to win a $50 gift card as a token of appreciation!
Who Should Take the Survey: PNW Pest Alert Network Subscribers
Time: Only 5-8 minutes to complete
Thank you for making pest management more effective and sustainable.
Pesticide Applicator Recertification Seminar
All Crops All Locations
Posted on: November 1, 2024 by Jeff Miller
The University of Idaho is hosting the Pesticide Applicator Recertification Seminar on December 4 in Burley (Burley Best Western) and on December 5 in Twin Falls (Herrett Center, CSI).
Morning session: registration begins at 7:45 and the program runs from 8:30 to 12:00 pm (3 credits).
Afternoon session: registration at 12:30 and the program runs from 1:00 to 4:30 pm (3 credits).
The cost to attend is $35 (cash, card, or check) whether you attend the whole or half day.
Contact Linsy at the Jerome Extension office (208-324-7578, lin...@uidaho.edu) to RSVP.
Topics include:
Management of Russian Olive
Managing vole infestations in agriculture
Pesticide safety: Best practices for applicators
Environmental impacts of pesticides
Impacts of pesticide overuse
Beneficial insects for pest management
Manure and weed seeds
Pasture and range plants that endanger livestock
ISDA pesticide applicator program updates
Top applicator violations in Idaho
Tricounty/Cassia County weed control programs
Increasing efficiency of applications and reducing overapplication
2024 Idaho Association of Plant Protection Annual Meeting
All Crops All Locations
Posted on: October 11, 2024 by Jeff Miller
All are invited to the 2024 annual meeting of the Idaho Association of Plant Protection November 6-7 at the Herrett Center in Twin Falls! The cost to attend is $30 ($20 for students). Wed. credits = 2 ISDA, 4 CCA IPM. Thurs. credits = 2 ISDA, 3.5 CCA IPM. The agenda is attached and more information can be found at: https://millerresearch.com/event/2024-idaho-association-of-plant-protection/
» https://millerresearch.com/event/2024-idaho-association-of-plant-protection/
final report of the 2024 potato psyllid / Lso monitoring season.
Potato All Locations
potato psyllid
Posted on: September 12, 2024 by Tasha Stanzak
This is the
final report of the 2024 potato psyllid / Lso monitoring season.
One psyllid
from last week’s samples tested positive for Lso, the bacterium associated with
zebra chip disease (ZC).
About 4% of all
psyllids tested positive for Lso this year compared to about 6% last year and around
1% in most recent years (with the exception of 2022 in which 22% were positive).
It was another
interesting year with moderately high Lso incidence, but relatively low overall
psyllid captures. Captures were only slightly higher than last year. Thus, the
risk of ZC likely was mitigated somewhat by low psyllid captures despite
relatively high Lso.
Please remember
that our research with Russet Burbank shows that ZC can develop during storage
if infection occurs as late as two weeks before vine kill. Please maintain your
IPM programs, especially in areas with higher captures of Lso-positive
psyllids.
Thanks again to
all of our cooperators who helped to deploy and retrieve so very many yellow
sticky traps! And thanks to the growers who let us use their fields for this
work!
More information on management can be
found here:
Management: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the
weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit
the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid
captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid captures increase a bit; no new Lso positives
Potato All Locations
potato psyllid
Posted on: September 5, 2024 by Tasha Stanzak
• This week we received traps from 52 of the 58 fields that we are monitoring.
• We captured a total of 40 psyllids across 11 fields.
• Captures were from the following counties: Payette, Canyon, Owyhee, Elmore, and Twin Falls.
• None of the psyllids collected last week tested positive for Lso.
Psyllid captures increased this week to their highest level overall this season; however, captures are still relatively low and similar to the season-long totals from last year. Thankfully, no new Lso-positive psyllids were collected last week. Although psyllid captures have been relatively low this season, Lso incidence was slightly higher than in most recent years, which may slightly elevate risk of ZC. Please maintain you IPM programs, especially in areas with higher captures of Lso-positive psyllids.
This is our last week of retrieving traps from the field and reporting on captures. Next week we will report on Lso testing results from the psyllids collected this week and wrap up the season.
Please maintain your IPM programs. More information on management can be found here:
https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
Psyllid captures still low; one new Lso positive
Potato All Locations
potato psyllid
Posted on: August 29, 2024 by Erik Wenninger
• This week we received traps from 53 of the 58 fields that we are monitoring; 5 sites are finished for the season.
• We captured a total of 19 psyllids across 5 fields.
• Captures were from the following counties: Payette, Canyon, and Twin Falls.
• One of the psyllids collected last week tested positive for Lso.
Psyllid captures continue to be relatively low overall—slightly lower than last week and similar to the low captures we saw over the last two years at this time. We did find another Lso-positive psyllid last week so—despite the low captures—we are seeing some positives, which may slightly elevate the risk of ZC. A psyllid from a set of sticky traps that arrived late to us could not be tested, so we will have those results by next week. As we get into vine kill, remember that our research with Russet Burbank shows that ZC can develop during storage if infection occurs as late as two weeks before vine kill.
Please maintain your IPM programs. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
2024 ISDA Pesticide Disposal Program
All Crops All Locations
Posted on: August 24, 2024 by Jeff Miller
From the ISDA website:
Homeowners, growers, dealers, and professional applicators storing unusable or unwanted pesticides will have a safe and free opportunity to dispose of them at an ISDA pesticide disposal site.
ISDA pesticide disposal sites will take most pesticides including herbicides, insecticides, fungicides, rodenticides or anything ending with “cide.” No high-pressure canisters, fertilizer, micronutrients, paint, solvents, motor oil, or rinsates other than seed treat rinsates will be accepted. Loads exceeding 1,000 pounds must be pre-registered.
- Idaho Falls / Bonneville County Transfer Station – August 27th 9:00 a.m. to 1:00 p.m.
2455 Hemmert Ave, Idaho Falls, ID 83401 - Twin Falls / Twin Falls County Highway District – August 28th 9:00 a.m. to 1:00 p.m.
3208 E 3700 N, Twin Falls, ID 83301 - American Falls / Power County Transfer Station – Sept. 10th 9:00 a.m. to 1:00 p.m.
2950 Landfill Rd, American Falls, ID 83211 - Burley / Bureau of Land Management Field Office – Sept. 11th 9:00 a.m. to 1:00 p.m.
3630 Overland Rd, Burley, ID 83318
More information can be found at the ISDA website.
» https://agri.idaho.gov/pesticides/pesticide-disposal-program/
Psyllid captures still low; no new Lso-positives
All Crops All Locations
potato psyllid
Posted on: August 23, 2024 by Tasha Stanzak
·
This week we received traps from 57 of the 58
fields that we are monitoring
·
We captured a total of 30 psyllids across 14 fields.
Four of these psyllids were from traps that were in the field for two weeks.
·
Captures were from the following counties:
Payette, Canyon, Owyhee, Jerome, and Twin Falls.
·
None of the psyllids collected last week tested
positive for Lso.
Psyllid
captures ticked up relative to last week but were still relatively low compared
to recent years. Thankfully, we found zero Lso-positive psyllids last week. This
season’s low overall psyllid captures and moderate Lso incidence (in previous
weeks) suggests low to moderate risk for ZC. We still suggest maintaining your
IPM programs. Our research has shown that ZC can develop during storage if
infection occurs as late as two weeks before vine kill.
Please have your
IPM programs in place. More information on management can be found here:
https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the
weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit
the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid
captures from 2020 through 2024 as well as an archive of this year’s weekly
summaries: https://idahopestmonitoring.org/
Psyllid captures remain relatively low; one more Lso positive
Potato All Locations
potato psyllid
Posted on: August 15, 2024 by Erik Wenninger
• This week we received traps from 38 of the 58 fields that we are monitoring; two of our crop consultant collaborators were not able to get to their fields this week but we expect to get those traps next week.
• We captured a total of 16 psyllids across 5 fields.
• Captures were from the following counties: Payette, Canyon, Owyhee, and Twin Falls.
• One of the psyllids collected last week tested positive for Lso.
Psyllid captures were relatively low again this week and similar to the captures observed at this time during the last two years. Of course, we did not receive traps from several fields, but last week most of those fields showed zero psyllid captures (and a few had one capture), so we may expect to see only a slight increase in the total captures when we get those trap captures added to the tallies. One Lso-positive psyllid from last week was from Payette County. We continue to see a smattering of Lso-positives psyllids over this season; however, the relatively low psyllid captures overall should mitigate risk of ZC.
Please have your IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
4 Lso-positive psyllids; overall captures still moderately low
Potato All Locations
potato psyllid
Posted on: August 8, 2024 by Erik Wenninger
- This week we received traps from 58 of the 58 fields that we are monitoring.
- We captured a total of 21 psyllids across 11 fields.
- Captures were from the following counties: Payette, Canyon, Owyhee, and Twin Falls.
- Four of the psyllids collected last week tested positive for Lso.
Psyllid captures declined this week relative to last week. Captures overall continue to be moderately low and similar to the last two years. One Lso-positive psyllid was from Payette County, one from Elmore County, and two from Twin Falls County. Incidence of Lso usually diminishes over the season, though it is not unheard of to see a few positive psyllids in July to August. Thankfully overall captures have been relatively low this year, which should mitigate risk of ZC even with slightly higher Lso incidence in psyllids.
We urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
3 Lso positive psyllids; captures tick up only slightly
Potato All Locations
potato psyllid
Posted on: August 1, 2024 by Tasha Stanzak
• This week we received traps from ¬¬58 of the 58 fields that we are monitoring.
• We captured a total of 38 psyllids across 16 fields.
• Captures were from the following counties: Payette, Canyon, Owyhee, Elmore, Twin Falls, and Minidoka.
• Three of the psyllids collected last week tested positive for Lso.
Psyllid captures ticked up only slightly this week relative to last week. Captures overall continue to be moderate and similar to last year. One Lso-positive psyllid was from Payette County and two from Twin Falls County. Incidence of Lso usually diminishes over the season, though it is not unheard of to see a few positive psyllids in July to August. Thankfully overall captures have been moderate this year, which should mitigate risk of ZC even with slightly higher Lso incidence in psyllids.
Nevertheless, we urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
psyllid captures continue to be moderate; no new Lso positives
Potato All Locations
potato psyllid
Posted on: July 25, 2024 by Tasha Stanzak
• This week we received traps from 58 of the 58 fields that we are monitoring.
• We captured a total of 30 psyllids across 14 fields.
• Captures were from the following counties: Payette, Canyon, Gooding, Twin Falls, Minidoka, and Bingham.
• None of the psyllids collected last week tested positive for Lso.
Psyllid captures continue to be moderate. Captures this week were only slightly higher than what we found at this time over the last two years. Captures in the Treasure Valley and Upper Snake were similar to last week; captures in the Magic Valley ticked up only slightly relative to last week. We have captured a total of only 3 Lso-positive psyllids so far, which is lower than the Lso incidence we found at this time over the last few years. Typically we find the highest incidence of Lso in psyllids early during the season, so this low incidence so far is a good sign that overall Lso incidence for this season may be low.
Nevertheless, we urge growers across the state to have their IPM programs in place. More information on management can be found here:
https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
psyllid captures tick down; one more Lso-positive psyllid
Potato All Locations
potato psyllid
Posted on: July 18, 2024 by Tasha Stanzak
• This week we received traps from 57 of the 58 fields that we are monitoring.
• We captured a total of 14 psyllids across 11 fields.
• Captures were from the following counties: Canyon (2 fields), Owyhee, Jerome (2 fields), Twin Falls (4 fields), Cassia, and Bingham.
• One more psyllid collected last week in Twin Falls County tested positive for Lso.
Psyllid captures have been ticking down slightly over the last two weeks. Captures this week were similar to what we found at this time over the last two years. So, after seeing moderately high captures at the start of the monitoring season, we are now seeing relatively low captures. We have captured a total of 3 Lso-positive psyllids so far, which is lower than the Lso incidence we found at this time over the last few years.
Nevertheless, we urge growers across the state to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
Yellow rust (stripe rust), Bacterial leaf streak / black chaff, FHB, frost damage in wheat, barley
All Crops All Locations
Yellow (stripe) rust, Bacterial leaf streak, FHB
Posted on: July 17, 2024 by Juliet Marshall
The early season for Idaho was cool and unusually rainy. The weather was good for growth of winter and spring cereals. Stripe rust started developing in winter wheat (LCS Jet in production south of American Falls.) The season was mostly quiet until June 18th – 19th when there were significant frosts and freezing conditions throughout eastern Idaho.
As a result, bacterial infections took off, significantly damaging durum (Tiburon) and spring wheat.
Stripe rust started to show up at very low levels at the end of June, around heading of spring wheat. Initially the hard red spring wheat WB9707 was the first to show infection. Within 2 weeks, WB7696 (hard white spring), WB7313 (hard white spring), and now Holmes (hard red spring wheat) are also showing significant symptoms in production fields. Many other varieties are showing infections and will be rated soon in the Extension Variety Trials. Spring wheat is currently in early grain fill.
There is some BLS in spring barley as well, although it (black chaff) seems much more severe in spring wheat.
Some FHB has been collected in production fields of winter barley. Low levels of FHB are starting to show in spring wheat production fields around Idaho Falls. Night time temperatures and humidity are higher than usual due to cloud cover. Skies are hazy due to smoke from western fires. I am keeping an eye out for the development of additional FHB.
2024 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 17, 2024 by Jeff Miller
Miller Research will be holding its annual potato pest
management field day on Wednesday, August 21 from 10:00 AM to 12:00 PM. The cost to attend is $20. Two ISDA and two CCA (PM) credits are available. More information can be found by following the attached link.
» https://millerresearch.com/event/2024-miller-research-potato-pest-management-field-day/
psyllid captures similar across the state
Potato All Locations
potato psyllid
Posted on: July 12, 2024 by Tasha Stanzak
• This week we received traps from all 58 fields that we are monitoring.
• We captured a total of 34 psyllids across 15 fields.
• Captures were from the following counties: Canyon (4 fields), Owyhee, Twin Falls (6 fields), Gooding, Jerome, Bannock, and Bingham.
• One more psyllid collected from the Kimberly Research & Extension Center last week tested positive for Lso.
• None of the other psyllids collected last week tested positive for Lso. We are still waiting on results from 4 psyllids that were delivered to us late last week.
Psyllid captures this week were higher than at this time in the last two years; however, captures have not been as high as 2020-2021. It is noteworthy that we are now seeing similar numbers of psyllids per field across the state. We typically see higher captures in the Treasure Valley before captures increase across the rest of the state, so these observations are unusual. Thankfully we did not see an uptick in Lso-positive psyllid captures this week.
We urge growers across the state to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/extension/ipm/ag-pests/arthropods/psyllids
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024 as well as an archive of this year’s weekly summaries: https://idahopestmonitoring.org/
Cercospora Leaf Spot in Sugarbeet
Sugarbeets All Locations
Cercospor Leaf Spot
Posted on: July 12, 2024 by Oliver Never
Sugarbeets - Treasure Valley, Western Magic Valley
University of Idaho and Amalgamated Sugar Company personnel have identified Cercospora leaf spot in fields near Parma ID, Wilder ID, and Glenns Ferry ID. Incidence is still low, however, most fields have closed rows, Cercospora spores have been detected in spore traps deployed in the Treasure Valley, and environmental conditions have been conducive for infection for a couple of weeks now.
If fungicide applications have not yet occurred, we strongly encourage everyone to start spraying against Cercospora leaf spot.
Several fungicides are available but be aware of multiple fungicide-resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14 days. Using a protectant such as copper products, EBDCs, or hydrogen peroxide with every spray is strongly recommended.[https://www.srcoop.com/articles/2024_Fungicide_Recommendations.pdf ]
Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your area, to report a loss of fungicide efficacy, or if you have any questions.
Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.
https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
2024 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllid
Posted on: July 4, 2024 by Erik Wenninger
The University of Idaho and our crop consultant collaborators across the state are once again monitoring for potato psyllids, zebra chip disease (ZC), and liberibacter (Lso), the bacterium associated with ZC. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission and generous in-kind contributions by our cooperators.
Our official monitoring season began with wide deployment of traps last week and will continue for at least 10 weeks. We have 58 fields across the state this year, using 4 sticky traps per field at all sites.
• This week we received traps from all 58 fields that we are monitoring.
• We captured a total of 53 psyllids across 19 fields.
• Captures were from the following counties: Payette, Canyon (3 fields), Owyhee, Twin Falls (10 fields), Jerome, Cassia, Minidoka, and Bingham.
• Sites in Twin Falls County had a total of 43 psyllids.
• We also captured 1 psyllid from the Kimberly Research & Extension Center last week that tested positive for Lso.
• For psyllids captured this week, we expect to have results on Lso incidence next week.
Psyllid captures this week were higher than at this time in the last two years. It is noteworthy that most of the captures came from the Magic Valley, and most of those from one field (though captures in Twin Falls County were widespread). We typically see higher captures in the Treasure Valley before the Magic Valley, so these observations are unusual. It is not uncommon to see a few Lso-positive psyllids early in the season and fewer as the season progresses. However, if we continue to see relatively high captures in addition to more Lso-positives, this will represent higher ZC risk.
Given the potentially higher ZC risk, we strongly urge growers to have their IPM programs in place. More information on management can be found here:
https://www.uidaho.edu/cals/potatoes/pest-management/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures from 2020 through 2024: https://idahopestmonitoring.org/
» https://www.uidaho.edu/cals/potatoes/pest-management/psyllid-management
Pest Alert: Western cherry fruit fly in Idaho
Cherry All Locations
Western Cherry Fruit Fly
Posted on: June 10, 2024 by Jemila Chellappa
Crop: Cherry
Problem Description:
The first Western cherry fruit fly has been found in an Idaho State Department of Agriculture Western cherry fruit fly trap in Western Idaho. If treatment for the Western cherry fruit fly is not already underway, it should begin now.
Contact for further Information: vene.stewart@isda.idaho.gov
» https://pnwhandbooks.org/insect/tree-fruit/cherry/cherry-western-cherry-fruit-fly
2024 Snake River Weed Research Tour at the Malheur Experiment Station, Ontario, OR.
All Crops All Locations
Posted on: June 10, 2024 by Jemila Chellappa
Please join us this Thursday, June 13, 2024, for the 2024 Snake River Weed Research Tour at the Malheur Experiment Station, Ontario, OR.
Where: Malheur Experiment Station, Ontario, OR 97914
When: Thursday, June 13, 2024
Registration: 8:00 to 8:30 AM
Tour: 8:30 to 12:00 Noon
Complimentary lunch will be provided at 12:05 PM upon completion of the tour.
The tour will feature a session to correctly identify newly identified invasive weeds in the PNW region, Palmer amaranth and waterhemp, with live potted samples.
Studies for weed control in potato, onion, and sugar beet.
We have approval for pesticide application license recertification credits, and one must attend all parts of the tour to receive credits.
Oregon: 3 credits (2 core and 1 other)
Idaho: 3 credits.
The tour is open to the public!
For more information, please contact Joel Felix at joel.felix@oregonstate.edu or janet.jones@oregonstate.edu
2024 University of Idaho Snake River Weed Management Tour - JUNE 25 - Aberdeen R&E Center
All Crops All Locations
UI Snake River Weed Mgt Tour and Field Day Aberdeen R&E Center June 25
Posted on: June 10, 2024 by Pamela Hutchinson
University of Idaho Snake River Weed Management Tour and Field Day
Aberdeen R&E Center
Tuesday June 25, 2024
Registration: 8 to 9a
Tour: 9a to noon
Sponsored Lunch noon to 1p
Pesticide Applicator Recertification Credits offered: 4
No RSVP needed
2- and 3-way Tank Mixtures for Weed Control in Potatoes
Anthem Flex - Preemergence Tank Mixtures
Simulated Excess Rainfall Effect on Crop Injury and Weed Control
IR-4 Quinoa Herbicide Tolerance Trials
ISDA Specialty Crop Block Grant: Herbicide Tolerance in Condiment Mustard
Pest Management Research and Extension Updates
See attached agenda for more specific information about the Tour
phutch@uidaho.edu
» Agenda June 25 UI Snake River Weed Mgt Tour Aberdeen R&E Center
2024 Miller Research Potato Pest Management Seminar Handouts
Potato All Locations
Posted on: April 15, 2024 by Jeff Miller
The 2024 Miller Research Potato Pest Management Seminar was held on February 21 at the Historic Wilson Theater in Rupert, ID. Handouts from the presentations are now available at the attached link.
» https://millerresearch.com/2024/04/2024-miller-research-potato-pest-management-meeting/
2024 Ag Talk Tuesday sessions to resume
All Crops All Locations
General announcement - all crops
Posted on: April 4, 2024 by Kasia Duellman
The University of Idaho Ag Talk Tuesday sessions will resume once again in 2024. Join us for our 7th season of these live Zoom sessions held every first and third Tuesday, May through August. The sessions start at 11:00 AM (MDT) and typically conclude by Noon (MDT).
Registration is required to attend. The registration link is available on our website: https://www.uidaho.edu/ag-talk
During each Ag Talk Tuesday session, we invite contributions regarding timely information on crops in Idaho and the Pacific Northwest. These Crop Updates are then followed by a Featured Topic with Guest Speakers for deep dives into ag-related topics of interest.
Below is our current 2024 (Draft) Agenda for Featured Topics (subject to change):
- May 7: Water Update (Keith Esplin, Eastern Idaho Water Rights Coalition) and Ag Outlook (Josh Huff, Ag West Farm Credit)
- May 21: Soil arthropods and soil health: Belowground partners in PNW wheat systems (Dane Elquist and Sanford Eigenbrode*, University of Idaho) (*presenter)
- June 4: To be confirmed
- June 18: Family farms and corporate farms - what is the Idaho landscape? (Brett Wilder, University of Idaho)
- July 2: Entomology at Parma REC (Dr. Armando Falcon-Brindis, University of Idaho)
- July 16: Nematodes (Dr. Pooria Ensafi, University of Idaho)
- Aug 6: Annual alfalfa as a source of nitrogen for subsequent small grain crops (Reed Findlay*, Dr. Jared Spackman, Joseph Sagers, Justin Hatch, Tom Jacobsen, Jared Gibbons; University of Idaho) (*presenter)
- Aug 20: Idaho crop profitability outlook (Dr. Pat Hatzenbuehler, University of Idaho)
Looking forward to seeing you at Ag Talk Tuesday!
Sincerely,
Your Ag Talk Tuesday Organizers:
- Kasia Duellman (kduellman@uidaho.edu)
- Doug Finkelnburg (dougf@uidaho.edu)
- Pam Hutchinson (phutch@uidaho.edu)
- Juliet Marshall (jmarshall@uidaho.edu)
Cereal Schools Flyer and Agenda
Small Grains All Locations
Cereal Diseases and Agronomics
Posted on: January 19, 2024 by Juliet Marshall
This is a reminder that our 2024 Cereal Schools are coming soon!
See the attached files for the schedule. We hope to see you there!
Also, the Cereal Schools are the same dates EVERY YEAR: the first full week in February.
2025 Cereal Schools will be scheduled for Feb 4 – 7, Tuesday through Friday in the same order.
Cheers!
Juliet
-- Juliet M. Marshall, Ph.D.
Plant Sciences Department Head
Endowed Research Professor, Cereals Pathology and Agronomy
Idaho Falls R&E Center
1776 Science Center Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
208-390-4859 cell
Pesticide recertification seminars at the Western Idaho Ag Show
Announcements All Locations
Posted on: January 11, 2024 by Ronda Hirnyck
Six pesticide recertification credits offered at the Ag Show. Location: "The Center at the Fair", Canyon County Fairgrounds, Caldwell, ID.
WESTERN IDAHO AG SHOW –JANUARY 23-24, 2024
Pesticide Seminars for Recertification Credit
Day 1—January 23, 2023-Tuesday.
WESTERN IDAHO AG SHOW – JANUARY 24-25, 2023
Day 2 – January 24, 2024 --Wednesday
ICIA Seed Seminar - January 16, 2024 - Red Lion Hotel - Pocatello, Idaho
Potato All Locations
General announcement
Posted on: January 10, 2024 by Kasia Duellman
Dear All:
I have been remiss in passing on this information regarding the Annual ICIA Seed Seminar that precedes the Idaho Potato Conference, sponsored by the Idaho Crop Improvement Association. Please forgive me - the deadline for early registration has passed, but you can register at the door on the day of the event.
Date: January 16, 2024
Time: Seed Seminar - 11:30AM to 3:45PM (a closed PAC meeting follows, from 3:45PM to 5:00PM)
Location: Red Lion Hotel, 1555 Pocatello Creek Road, Pocatello, Idaho
For questions, please contact Ruby Hall at ICIA via email (rhall@idahocrop.com) or phone (208-522-9198).
Please see attached the registration form and the agenda.
Sincerely,
Kasia
Job announcement - Farm Assistant II, UI Kimberly REC
All Crops All Locations
General announcement - all crops
Posted on: December 14, 2023 by Kasia Duellman
All:
The University of Idaho Kimberly Research & Extension Center is advertising a full-time position with benefits. Please forward to anyone who may be interested in applying.
This position will operate tractors and other field equipment, plant, fertilize, cultivate, spray, and harvest in support of research and non-research related crops. Perform routine maintenance on machinery and equipment. Irrigate some weekends. Perform backup facilities maintenance at the Kimberly R&E Center. Contribute to team effort by creating a work environment that emphasizes teamwork and safety.
Here is the link to the position: https://uidaho.peopleadmin.com/postings/43031
Need Pesticide Credits for 2023?
Announcements All Locations
Posted on: November 7, 2023 by Kimberly Tate
Enroll in the University of Idaho (UI) Extension Pesticide Safety Education Program (PSEP) for the 2023 Fall Recertification Webinar Series (held via Zoom; no camera/no account required). Attend for $10 per applicator/per webinar. Completed webinar(s) receive one Idaho State Department of Agriculture pesticide credit(s)*. Note: ALL webinars are held at Mountain Time (MT).
- Nov. 14 from 2–3 p.m. (MT) — Ronda Hirnyck: Changes to pesticide regulations; What the applicator needs to know!
- Nov. 21 from 2–3 p.m. (MT) — Doug Finkelnburg: Avoiding herbicide residual issues in cropping systems
- Nov. 28 from 2–3 p.m. (MT) — Albert Adjesiwor, Ph.D.: Palmer Amaranth and Waterhemp, the Troublesome Pigweeds: Identification, early detection, and rapid response
- Dec. 5 from 2–3 p.m. (MT) — Ariel Agenbroad: Assessing beneficial insect habitat on your farm or property
- Dec. 12 from 2–3 p.m. (MT) — Tom Jacobsen: Minimizing pesticide resistance
- Dec. 19 from 2–3 p.m. (MT) — Brad Stokes: Overview of invasive organisms in Idaho and their treatment options
Registration will close at noon (MT) on the day of the webinar.
*For pesticide credit: Pesticide applicators must answer questions within the webinar session. This requires individual computer and internet access for each user. Answers will be collected to confirm attendance was maintained for the entire webinar. The Zoom platform does not recognize multiple users connected with the same email address. Be sure to utilize different identifying information.
Register Today: https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true
Need more information? Contact Kimberly Tate, UI Extension Pest Management Instructor by phone (208) 364-4581 or email ktate@uidaho.edu.
University of Idaho Potato Storage Open House
Potato All Locations
Posted on: November 6, 2023 by Gustavo Teixeira
Potato Enthusiasts -- Get ready for an extraordinary experience! You are warmly
invited to the inaugural University of Idaho Potato Storage Open House taking
place at the state-of-the-art Potato Storage Facility at the Kimberly Research
and Extension Center on December 5th, from 9:00 am to noon.
What's in Store for You? At this event, we're bridging the gap
between industry and cutting-edge U of I storage research, and we've packed the
morning with exciting activities:
Explore the Future: Witness the latest breakthroughs and
advancements in potato storage through captivating research posters and live
demonstrations.
Behind the Scenes: Step inside the innovative Potato Storage
Facility and see where the magic happens. Discover how this facility supports
our industry-related research and extension projects, contributing to your
economic growth.
Knowledge Exchange: Join our U of I researchers in lively
discussions about the most current potato research practices and industry
trends.
But that's not all! Your participation at the Open House will
not only be highly appreciated but also incredibly insightful and
rewarding.
Event Details:
Date: December 5th
Time: 9:00 am - noon
Location: Potato Storage Facility, Kimberly Research and
Extension Center
Don't miss out on this unique opportunity to connect, learn, and be a
part of the future of potato storage.
2023 Idaho Association of Plant Protection Meeting
All Crops All Locations
Posted on: October 11, 2023 by Jeff Miller
The program is set for the 2023 Idaho Association of Plant Protection on November 1-2 at the Univsersity of Idaho Extension office in Rupert (McGregor Building, 85 East Baseline, Rupert, Idaho, 83350).
Program details are available in the attached announcement. Please share with any interested individuals.
» https://millerresearch.com/event/2023-idaho-assocation-of-plant-protection/
Ag Talk Report Newsletter - Issue 5 Number 1
All Crops All Locations
General announcement - all crops
Posted on: September 28, 2023 by Kasia Duellman
Greetings! The first issue of the Ag Talk Report for 2023 is now available. Ag Talk Report is a newsletter for Idaho crops and a venue to provide more insight from our Ag Talk Tuesday sessions. It contains information far beyond what is heard on the Ag Talk Tuesday sessions. It is now available for your reading pleasure at the following link: http://www.uidaho.edu/ag-talk
In this issue, learn about how hemp might be used in a potato rotation, gain insight into the economic outlook and costs of return for various crops, and find out how the 2023 southeast Idaho aphid monitoring efforts compared to other years.
final report of the 2023 potato psyllid / Lso monitoring season.
Potato All Locations
potato psyllid
Posted on: September 21, 2023 by Tasha Stanzak
This is the final report of the 2023 potato psyllid / Lso monitoring season.
All of the psyllids tested last week were negative for Lso, the bacterium associated with zebra chip disease (ZC).
About 6% of all psyllids tested positive for Lso this year compared to around 1% in most recent years (and 22% last year).
It was another interesting year with somewhat high Lso incidence, but relatively low overall psyllid captures. Captures were only slightly higher than last year, which was among our lowest years ever. Thus, the risk of ZC likely was mitigated somewhat by low psyllid captures despite relatively high Lso.
Thanks again to all of our cooperators who helped to deploy and retrieve so very many yellow sticky traps! And thanks to the growers who let us use their fields for this work!
More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid trapping wrap up
Potato All Locations
potato psyllid
Posted on: September 14, 2023 by Tasha Stanzak
We officially ended the monitoring season last week, but we received a bonus week of sticky traps from two fields in Canyon County this week. We captured a total of 12 psyllids across these 2 fields.
None of the six psyllids captured last week was positive for Lso, the bacterium associated with zebra chip disease (ZC). Next week we will report Lso results for the 12 psyllids submitted this week and provide an end-of-season wrap up.
About 7% of all psyllids tested positive for Lso this year compared to around 1% in most recent years (and 22% last year). It is too soon to tell what this low psyllid / somewhat high Lso season means for ZC in tubers at harvest. Our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tubers from fields at higher risk sooner rather than later.
More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid trapping ends for the season.
Potato All Locations
potato psyllid
Posted on: September 7, 2023 by Tasha Stanzak
This week we received traps from 20 of the 55 fields that we are monitoring. Thirty-three fields have been vine killed or are senescing and are no longer being monitored. We captured a total of 6 psyllids across 3 fields. The three fields were in Canyon, Elmore, and Twin Falls counties.
This is our last week of actively trapping psyllids. We will post the final results next week to finish out the monitoring season.
One psyllid tested from last week’s Canyon County captures was positive for Lso, the bacterium associated with zebra chip disease (ZC); the rest of the psyllids captured last week were negative for Lso. This is the first Lso positive we have detected since early July.
With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid captures dropped this week
Potato All Locations
potato psyllid
Posted on: September 1, 2023 by Erik Wenninger
This week we received traps from 31 of the 55 fields that we are monitoring. Twenty-two fields have been vine killed or are senescing and are no longer being monitored. We captured a total of 15 psyllids across 7 fields. Five of the fields were in Canyon County, and the other two fields were in Elmore and Twin Falls counties.
Total psyllid captures dropped notably from last week. The slightly cooler temperatures and precipitation likely contributed to lower captures.
All psyllids tested from last week’s captures were negative for Lso, the bacterium associated with zebra chip disease (ZC); however, the results from the psyllids that arrived to us late are still pending. Interestingly, we still have not had a positive psyllid since early July.
With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid captures per field similar to last week
Potato All Locations
potato psyllid
Posted on: August 25, 2023 by Tasha Stanzak
This week we received traps from 35 of the 55 fields that we are monitoring. One field was vine killed and we are still waiting on traps from 19 sites. Many of these fields could not be entered earlier in the week so traps were shipped to us late. We captured a total of 30 psyllids across 10 fields. Four of the fields were in Canyon County; the remaining 6 fields were in Elmore, Gooding, and Twin Falls counties.
Total psyllid captures per field were similar to last week, though several of the fields still unaccounted for are sites where we’ve seen relatively high captures this season. Updated results will be posted on the sites (below) early next week, and we’ll send out another alert if anything unexpected is observed.
All psyllids tested from last week’s captures were negative for Lso, the bacterium associated with zebra chip disease (ZC). We have not had a positive psyllid since early July.
Nevertheless, we urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Psyllid captures tick up slightly, but still relatively low
Potato All Locations
potato psyllid
Posted on: August 17, 2023 by Erik Wenninger
This week we received traps from 49 of the 55 fields that we are monitoring. We captured a total of 44 psyllids across 14 fields. Ten of the fields were in Canyon County; the remaining 4 fields were in Payette, Elmore, and Twin Falls counties.
Total psyllid captures ticked up slightly, at least in the Treasure Valley; however, captures were still relatively low compared to previous years. This is the time of year that we typically see captures increase, so this uptick is not surprising.
All psyllids tested from last week’s captures were negative for Lso, the bacterium associated with zebra chip disease (ZC); results are pending for seven psyllids that were shipped late. Although we saw relatively high prevalence of Lso in early samples, we have not had a positive psyllid since early July.
Nevertheless, we urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
Final Ag Talk Tuesday session for 2023 - August 15
All Crops All Locations
General announcement - all crops
Posted on: August 14, 2023 by Kasia Duellman
The final Ag Talk Tuesday session will be held tomorrow, August 15, at 11:00 AM (MT) - via Zoom.
Topics:
- Economics Outlook — Pat Hatzenbuehler
- Crop Insurance 101 — Bryan C. Ayers, Program Analyst, Risk Management Agency Education Division, USDA)
Registration is required. You can register here: https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
More information on Ag Talk Tuesdays can be found on our website: https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
2023 Idaho Association of Plant Protection
All Crops All Locations
Posted on: August 10, 2023 by Jeff Miller
Anybody interested in learning about plant diseases and pests important in Idaho is invited to the 2023 Idaho Association of Plant Protection annual meeting, November 1-2 in Rupert, ID.
Attached is the first announcement and call for participation in the IAPP. See details on the attached page. If you have any questions, please contact the chairs for this year:
Albert Adjesiwor, aadjesiwor@uidaho.edu
John Snelling, jsnelling@rogueseedproduction.com
Please share with any who may be interested.
Psyllid captures remain low; no new positives
Potato All Locations
potato psyllid
Posted on: August 10, 2023 by Erik Wenninger
This week we received traps from 50 of the 55 fields that we are monitoring. We captured a total of 30 psyllids across 12 fields. Seven of the fields were in Canyon County, the remaining 5 fields were in Payette, Owyhee, Elmore, and Twin Falls counties.
Total psyllid captures were similar to last week, and we continue to see quite low numbers this season.
All of the psyllids captured last week were negative for Lso, the bacterium associated with zebra chip disease (ZC). We still urge growers to have their IPM programs in place given the prevalence of Lso earlier in the season. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
IPM Field Days - Aberdeen and Parma
All Crops All Locations
General announcement - all crops
Posted on: August 9, 2023 by Kasia Duellman
Join us at the Aberdeen Research & Extension Center for a Potato IPM Field Day on Wednesday August 16, 2023. Registration begins at 8:30 AM. The tour starts at 9:00 AM and ends at Noon. Attendees are eligible for 1 ISDA pesticide credit and 3 CCA credits. A free lunch will be provided at the tour's conclusion.
Location:
University of Idaho - Aberdeen REC
1693 S 2700 W
Aberdeen, ID 83210
Following the Aberdeen Potato IPM Field Day, head over to Parma and Join University of Idaho Extension Specialists and Researchers on Thursday August 17, 2023 for IPM Field Day at Parma with registration beginning at 7:15 a.m. and Field Tour starting promptly at 8:00 a.m. until 10:30 a.m.
Location:
University of Idaho - Parma REC
29603 U of I Lane
Parma, ID 83660-6699
» https://webpages.uidaho.edu/extension-seed-potato/events.html
Psyllid captures still relatively low
Potato All Locations
potato psyllid
Posted on: August 3, 2023 by Tasha Stanzak
This week we received traps from 46 of the 55 fields that we are monitoring. We captured a total of 29 psyllids across 13 fields. Nine of the fields were in Canyon County, the remaining 4 fields were in Payette, Owyhee, Gooding, and Twin Falls counties.
Total psyllid captures were slightly higher than last week, but we continue to see quite low numbers this season.
All of the psyllids captured last week were negative for Lso, the bacterium associated with zebra chip disease (ZC). This is good news considering the prevalence of positive psyllids during early July, but we still urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
No new positive psyllids this week
Potato All Locations
potato psyllid
Posted on: July 28, 2023 by Erik Wenninger
This week we received traps from 53 of the 55 fields that we are monitoring. We captured a total of 21 psyllids across 9 fields. Six of the fields were in Canyon County, the remaining 3 fields were in Payette, Owyhee, and Twin Falls counties.
Total psyllid captures were slightly higher than last week, but we continue to see quite low numbers this season.
All of the psyllids captured last week were negative for Lso, the bacterium associated with zebra chip disease (ZC). This is good news considering the prevalence of positive psyllids the last two weeks, but we still urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
More Lso-positive psyllids
Potato All Locations
potato psyllid
Posted on: July 20, 2023 by Tasha Stanzak
This week we received traps from 46 of the 55 fields that we are monitoring. We captured a total of 10 psyllids across 4 fields. Three of the fields were in Canyon County and one was in Twin Falls County.
Total psyllid captures were similar to last week, and we continue to see relatively low numbers this season.
However, 12 of the 14 psyllids we captured last week were positive for Lso, the bacterium associated with zebra chip disease (ZC). In addition, one of the three psyllids from the previous week that was shipped late also tested positive. Thus, 15 of the 19 psyllids tested this season have been positive.
It is not unusual to see more Lso-positive psyllids early in the season, but this level of Lso is higher than we typically see. It is fortunate that psyllid numbers are quite low, but the high prevalence of Lso suggests that we should be vigilant. We strongly urge growers to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
Please visit the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures and an archive of blog posts for this season: https://idahopestmonitoring.org/
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
Ag Talk Tuesday July 18 "Rocks and Spuds"
All Crops All Locations
Ag Talk Tuesday July 18, 2023
Posted on: July 17, 2023 by Pamela Hutchinson
Featured Topic:
July 18 — Rocks
and Spuds — Kamren
Koompin, Idaho grower/producer — Pamela J.S. Hutchinson (moderator)
Welcome
to the 2023 season of Ag Talk Tuesday, presented by University of
Idaho Extension every first and third Tuesday May-August, 11:00 AM to Noon (via Zoom).
Tomorrow's session will
feature Idaho grower Kamren Koompin's talk "Rocks and Spuds" following the usual crop updates.
Registration is required. For
more information and the registration link, please check out the Ag Talk Tuesday website:
https://www.uidaho.edu/extension/news/ag-talk-tuesday
You can also register for Ag Talk Tuesday by following this link:
https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
If you miss the live sessions, videos are available on the University of Idaho College of Ag/Life Sciences YouTube channel: https://www.youtube.com/playlist?list=PL6g6ZYcM47s85ASnhBlMHbFMD-x-zAGt6
Remaining
Session Featured Topics and dates:
Aug. 1 — CALS Update
(speaker: Dean Michael Parrella)
Aug. 15 — Economics
Outlook (speaker: Pat Hatzenbuehler)
Hope you can attend
these live, online sessions (via Zoom).
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
First Lso-positive psyllid of the season
Potato All Locations
potato psyllid
Posted on: July 15, 2023 by Erik Wenninger
Apologies! This alert was posted on Friday, but an alert was not sent.
This week we received traps from all 55 fields that we are monitoring. We captured a total of 14 psyllids across 10 fields. Seven of the fields were in Canyon County; the remaining 3 fields were in Owyhee, Twin Falls, and Minidoka counties.
One of the psyllids we collected last week from Canyon County was positive for Lso, the bacterium associated with zebra chip disease (ZC). The other psyllids from last week were shipped to us late, so results are expected by Monday (and will be posted to the Idaho Pest Monitoring Dashboard, below). A positive psyllid this early in the season is somewhat concerning. ZC risk is in part a function of psyllid numbers and Lso incidence, so it is fortunate the psyllid numbers have been low so far. Nevertheless, we urge growers to watch psyllid captures closely and to have their IPM programs in place. More information on management can be found here: https://www.uidaho.edu/cals/potatoes/news/psyllid-management
Please visit our new site, the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures for this season and the previous three seasons: https://idahopestmonitoring.org/
We will be posting and archiving our weekly updates on this site. In addition to the graphical summaries, you will be able to look back on all the weekly “blog” summaries for this year and easily compare captures among counties, regions, and years over 2020 to 2023.
To view the weekly data by site in the old spreadsheet format: https://tinyurl.com/potatopsyllid
» https://idahopestmonitoring.org/
» https://www.uidaho.edu/cals/potatoes/news/psyllid-management
2023 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 11, 2023 by Jeff Miller
» https://millerresearch.com/event/2023-miller-research-potato-pest-management-field-day/
Want Pesticide Credits?
All Crops All Locations
Pesticide Credits
Posted on: July 10, 2023 by Kimberly Tate
Enroll in the University of Idaho (UI) Extension Pesticide Safety Education Program (PSEP) for the 2023 Summer Series Webinars (via Zoom; no camera/no account required). Each webinar is $10 per applicator. Completed webinar(s) receive multi-state pesticide credit(s). ISDA, ODA & WSDA credits available for completed webinar*. Note: ALL webinars are held at Mountain Daylight Time (MDT).
- Aug. 8 at 2 p.m. to 3 p.m. (MDT) — Desireè Wickwar: Turf insect management
- Aug. 15 at 2 p.m. to 3 p.m. (MDT) — Doug Finkelnburg: Seed bank dynamics for grassy weed control in agricultural systems
- Aug. 22 at 2 p.m. to 3 p.m. (MDT) — Dr. Pam Hutchinson & Dr. Albert Adjesiwor: Weather conditions and herbicide performance
*For pesticide credit: Pesticide applicators must answer questions within the webinar session. This requires individual computer and internet access for each user. Answers will be collected to confirm attendance was maintained for the entire webinar. Idaho State Department of Agriculture (ISDA), Oregon Department of Agriculture (ODA) and Washington State Department of Agriculture (WSDA) credits approved. Please register with your state license number(s).
Register Today: https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true
Need more information? Contact Kimberly Tate, University of Idaho Extension PSEP Sr. Instructor by phone (208) 364-4581 or email ktate@uidaho.edu.
» UI Extension Pesticide Safety Education Summer Series Poster
2023 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllid
Posted on: July 7, 2023 by Tasha Stanzak
The University of Idaho and our crop consultant collaborators across the state are once again monitoring for potato psyllids, zebra chip disease (ZC), and liberibacter (Lso), the bacterium associated with ZC. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission and generous in-kind contributions by our cooperators.
Our official monitoring season began with wide deployment of traps last week and will continue for 10 to 12 weeks. We have 55 fields across the state this year, using 4 sticky traps per field at all sites.
This week we received traps from 52 of the 55 fields that we are monitoring. We captured a total of four psyllids across three fields, all in Canyon County. In addition, a limited number of fields was monitored prior to the official start of the monitoring program. We captured one psyllid in a field in Canyon County last week and zero so far over four weeks of monitoring at the Kimberly Research & Extension Center.
It is still early, but thus far we are seeing relatively low numbers of psyllids, similar to the numbers we observed in 2022.
We expect to have results on Lso incidence next week.
Please visit our new site, the Idaho Pest Monitoring Dashboard, for graphical summaries of our psyllid captures for this season and the previous three seasons: https://idahopestmonitoring.org/
We will be posting and archiving our weekly updates on this site. So in addition to the graphical summaries, you will be able to look back on all the weekly “blog” summaries and easily compare this year’s captures to previous years.
Ag Talk Tuesday - June 20, 2023 session
All Crops All Locations
General announcment - all crops
Posted on: June 19, 2023 by Juliet Marshall
The ATT is very pleased to announce that tomorrow’s special guests include commission members of the Idaho Wine Commission! Join us for Mark Pasculli and Jake Cragin’s perspective on grape production in Idaho and the role the Idaho Wine Commission plays in the grape and wine industries!
The Ag Talk Tuesday format starts with crop updates from extension specialists and industry partners at 11 AM Mountain (10 AM Pacific) lasting 20-30 minutes, followed by an introduction to our highlighted speakers. By that time, the irrigation pipes should have been moved, the cows fed, and morning chores complete - perfect timing to jump online prior to lunch!
More information can be found on the Ag Talk Tuesday website: https://www.uidaho.edu/extension/news/ag-talk-tuesday
Registration is required. To register, copy and paste this link in your web browser: https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
See you June 20 - 11:00 AM!
Courtesy of your Ag Talk Tuesday coordinators:
Juliet Marshall
Kasia Duellman
Doug Finkelnburg
Pamela J.S. Hutchinson
Olga Walsh
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
2023 Ag Talk Tuesday - June 6 session
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Posted on: June 5, 2023 by Kasia Duellman
Welcome to the 2023 season of Ag Talk Tuesday, presented by University of Idaho Extension every first and third Tuesday May-August, 11:00 AM to Noon (via Zoom).
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://www.youtube.com/playlist?list=PL6g6ZYcM47s85ASnhBlMHbFMD-x-zAGt6
2023 Parma Field Day Tour
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all
Posted on: May 31, 2023 by Ronda Hirnyck
The Agricultural Field Day Tour will be held at the University of Idaho Parma Research and Extension Center Wednesday June 21, 2023.
Registration: 8:00 AM
Field Tour and Speaker Presentations: 8:30 AM - 11:15 AM
Tour includes: Soilborne diseases of crops, cover crops, cereal nurseries, straw mulch, temperature/irrigation on onion bulb rots and the new experimental hop yard.
Pesticide recertification credits have been applied for with ISDA, ODA and CCA.
For further information please contact:
James Woodhall jwoodhall@uidaho.edu
Olga Walsh owalsh@uidaho.edu
Brad Stokes bstokes@uidaho.edu
REMINDER! 2023 Snake River Weed Control Tour--Malheur Experiment Station
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Weeds
Posted on: May 31, 2023 by Ronda Hirnyck
It is that time of the year when we embark on field tours to learn
about research studies being conducted to advance our knowledge of weed control
in various crops. The 2023 Snake River Weed Research Tour at the Malheur
Experiment Station, Ontario, OR is planned as follows.
Date: June 15, 2023
Event: The 2023 Snake River Weed
Control Research Tour - Malheur Experiment Station
Venue: Malheur Experiment
Station, 595 Onion Ave, Ontario, OR 97914
Registration: 8:00 to 8:30AM
Tour: 8:30 to 12:00 PM MT
Complementary lunch will
follow as soon as tour is completed.
Pesticide Recertification Credits
Idaho
– 3 credits
Oregon
– 3 credits
Featured Weed Studies
First Stop:
1.
Herbicides for weed control in
dry bulb onion
Second Stop:
1.
Herbicides for weed control in
potato
2.
Evaluation of adjuvants used
with Roundup (glyphosate) to manage weeds in sugar beet
3.
Timing of first irrigation to
activate Sequence and Nortron herbicides for effective management of weeds in
sugar beet
4.
Herbicides for wild oats and
kochia control in winter wheat
Please save a date and share this notice with those on your
mailing list. We look forward to seeing you on Thursday, June 15, 2023 at the Malheur Experiment Station.
Joel Felix
Forecast is for cloddy with a chance of weeds
Potato All Locations
Weed control in cloddy fields
Posted on: May 19, 2023 by Pamela Hutchinson
All will agree that weather conditions spring 2023 have been
unusual: wide ranging snow cover, snow melt runoff and water pooling in fields,
and short bursts of intense wind and rain. One of the impacts on soil conditions
after potato growers were finally able to get into the fields for tillage and planting
has been the formation of clods.
What happens: Some preemergence herbicides applied
and sprinkler incorporated, or even chemigated, might not get below the clods,
resulting in patches of weeds emerging though the untreated soil.
What can be done: Questions have arisen about what
can be done proactively and the answer can be keeping herbicide solubility in
mind when designing a tank mixture. A more soluble herbicide might move through
and/or around ending up below clods resulting in better coverage. than a
herbicide with relatively less solubility.
What you need to know: In general, with the medium-
to coarse-textured, moderate organic matter content, neutral to high pH soils
in the PNW, potato herbicide solubility ranging from high to low: Matrix (rimsulfuron)
>> metribuzin, Outlook (dimethenamid-p) > Dual Magnum (s-metolachlor),
Eptam (EPTC) >> Linex (linuron), Reflex (fomesafen), Zidua
(pyroxasulfone) >> Chateau (flumioxazin), Sonalan (ethalfluralin),
Treflan (trifluralin), and Prowl H2O (pendimethalin). NOTE: Sulfentrazone
solubility is similar to that of Outlook unless soil pH is above 7.5, then it
is more soluble than the any of the other herbicides. Use of Trade Names is
not an endorsement for one product over another with the same active ingredient.
Put it together: Design a tank mixture for the weed
species in a field with inclusion of soluble herbicides that can move below the
clods for the best coverage possible.
Example: Control hairy nightshade, common
lambsquarters, and green foxtail in a cloddy field. Tank mix soluble Matrix or
Outlook for h. nightshade + soluble metribuzin for c. lambsquarters + moderately
soluble Linex for both** of the broadleaves. All provide green foxtail control.
Get out the crystal ball and the umbrella: If “unusual”
amounts of rainfall occur within 1 or 2 weeks after application and incorporation,
the “soluble” herbicides could move too far below the weed seed germination
zone.
Bulletin 950 https://www.uidaho.edu/extension/publications/bul/bul950
of Action (SOA) controlling the same weed species (“overlapping” control) is highly
recommended for herbicide resistance management. In the example given, Matrix, Outlook,
metribuzin, and Linex all have different SOAs. Without Linex, there is no
overlapping SOA for hairy nightshade and no overlapping SOA for common
lambsquarters. Linex as the third partner in the mix controls c. lambsquarters and has activity on h. nightshade. As a
result, there is more than one SOA on both weeds. The overlap is necessary for
herbicide resistance management. That one-in-a-million plant in the population naturally
tolerant to one SOA does not survive because the other SOA in the tank mixture will
provide control. If the tolerant plant survives and produces seeds because
overlapping herbicide SOA are not tank mixed and/or not rotated, then resistance
in the population could develop over time if only the one herbicide SOA is used.
Examples of Potato
Herbicide Sites of Action and weeds controlled - herbicides within [ ]
have the same SOA:
Hairy nightshade - Matrix, [Outlook/Dual Magnum/Zidua],
Eptam, [Reflex/Chateau], Linex;
Common lambsquarters – metribuzin, [Prowl H2O/Sonalan/Treflan],
Linex;
Redroot pigweed – all of these herbicides except metribuzin
when the population in a field is resistant to metribuzin;
Green foxtail – all of these herbicides.
then getting satisfactory SOA overlap is challenging. Linex seems to be the
only herbicide in that situation that can provide overlapping SOA for hairy
nightshade AND overlapping SOA for common lambsquarters.
Ag Talk Tuesdays resume in 2023
All Crops All Locations
Posted on: April 17, 2023 by Kasia Duellman
Mark your calendars for every first and third Tuesday in May, June, July and August, 11:00 AM to Noon for Ag Talk Tuesday - live, online sessions (via Zoom).
Presented by University of Idaho Extension, the 2023 sessions of Ag Talk Tuesday continue with the second session of the season, this Tuesday, May 16. Sessions start at 11:00 AM with crop updates (everyone is invited to contribute). Following crop updates, enjoy a Featured Topic presented by a Guest Speaker. For this second session, we have invited Albert Adjesiwor with University of Idaho to discuss the Pacific Northwest Herbicide Resistance
Initiative and Idaho.
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZwoceuqpzgrHtcuo-JwYrywKfEBP_jNgMcE#/registration
Lions and Tigers and Bears? Not quite, but Snow mold, dwarf smut and voles...
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Snow molds, dwarf bunt and voles
Posted on: March 30, 2023 by Juliet Marshall
Spring is…. Here? According to the calendar, yes. But
looking out at additional snow this morning in southeast Idaho and reviewing
the extended forecast, mother nature has stubbornly dug in her heels on winter.
The implications are that winter cereals are likely to be at
risk for damage and spring grain will never get planted. Or maybe it just seems
that way.
The extra moisture we are receiving with these consistent
spring snows and rain events makes so many of us relieved and happy. Our
subsoil moisture has been replenished and the reservoir system is recharging.
What a stroke of fortune!
Some areas in southeast Idaho haven’t seen bare ground since
early November. A mild fall facilitated the establishment and early growth of
winter wheat until cold temperatures rapidly shut down the season. However, what
is the outlook for the crop health of winter grain given how long we’ve had
snow cover?
Like any “good scientist”, I will say – That depends. When
we have long periods of time where snow covers the ground, two diseases can
become a major problem: snow mold and dwarf bunt. Snow can insulate the ground,
keeping the surface moist, preventing the soil from freezing and allowing these
cold-tolerant fungi to infect and grow on winter wheat. While difenoconazole seed
treatments are effective against dwarf bunt on susceptible varieties, there is
very little fungicide protection that is effective for snow mold when the snow
coverage exceeds three months – or in this year, up to five months!
Several years ago, I participated in a study that examined
the genetics of snow mold resistance up at the University of Idaho Tetonia
R&E Center. There were varieties that had a much higher tolerance for
fungal attack based on their genetic traits – the varieties that accumulated
more complex carbohydrates were less susceptible to being killed by snow mold
fungi. That meant that varieties when planted early enough to establish a
strong crown and high carbohydrate reserves survived long periods of time under
snow where there is very little sunlight. That was quite a while ago, and those
tolerant varieties are no longer grown.
Snow mold fungi feed off leaves, slowly depleting the
carbohydrates (or complex sugars) that plants need to survive – kind of like a
slow death by a thousand paper cuts. The longer the time spent under the snow,
the less the likelihood that the plants can survive. One of the stories I used
to hear was that growers would have fly ash flown on the fields to increase
rapid melting of the snow. That would require sunny days without additional
snow accumulation. That hasn’t happened this year. However, wheat can make a
recovery as long as the crown survives. After snow melt, check to see if the
crowns are white and firm. If they are soft and brown, then the plant is dead.
To add insult to injury, a healthy wheat stand under long
periods of snow cover allows voles to proliferate like mad! While worse in alfalfa,
stands can be significantly reduced in winter wheat as well. See the Feb 8
article written for “Catching up with CALS” with strategies and advice by
Danielle Gunn and Joseph Sagers: https://www.uidaho.edu/news/news-articles/colleges/cals/2023/020823-vexed-voles
As I head further south from Idaho Falls, I see large areas
of water ponding in low areas of the fields. The freeze-thawing cycles that
occur with substantial water saturation reduces plant survival as plants suffer
from frost-heaving, which rips and severs roots, and from anoxia – no oxygen
under flooded areas.
My best advice for spring grain, is to plant as soon as you
can (and not to bury the tractor in the low spots!) and to be sure the spring
grain is protected with fungicides that are effective against Pythium. These
fungal-like pathogens love cool and wet conditions and require specialized
“fungicides” that include metalaxyl. With the prevalence of metalaxyl-resistant
Pythium in the area, you may also need to consider the relatively new products
ethaboxam (Intego from Valent) and picarbutrazox (Vayantis from Syngenta).
In the meantime, we sit and wait. Good luck.
» https://www.uidaho.edu/extension/cereals/scseidaho
» https://www.uidaho.edu/news/news-articles/colleges/cals/2023/020823-vexed-voles
Need to study for a pesticide exam?
All Crops All Locations
Posted on: March 23, 2023 by Kimberly Tate
The UI Extension Pesticide Safety Education Program will be offering pre-license trainings ONLINE, via Zoom. This 4-day class is designed to be both with live instructors and work on your own, at your own pace. Students are required to have a computer or smart tablet with internet access. You will learn core pesticide safety practices and prepare for the following Idaho State Department of Agriculture pesticide exams; Private Applicator, Professional Applicator: Core Competency; Agricultural Herbicide; Agricultural Insecticide; Ornamental Herbicide; Ornamental Insecticide; General Pest; Right of Way; Rodent Control; and Chemigation.
Classes meet twice daily Monday through Thursday. Our next training session is scheduled for April 3-7, 2023, from 9-11:30 am (MST) and 1:30-4 pm (MST). Registration closes, April 3, 2023 at 8 am (MST).
Enrollment includes access to 12-eLearning modules and educational materials until May 15, 2023. The class fee $50 per student.
To register, visit our Marketplace website link.
» https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true
The Second Annual Organic Agriculture Workshop Thursday, March 2nd
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Posted on: February 28, 2023 by Ariel Agenbroad
The Second Annual Organic Agriculture Workshop
hosted by the University of Idaho on Thursday, March 2nd from
10:00-1:30 PM MST.
Registration (and lunch) are free! If
you are planning to attend in person, please register by February 28th.
You can register at: https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw
This is an IN-PERSON workshop at the University of Idaho
Caldwell Research and Extension Center (1904 E. Chicago Street, Suite AB
Caldwell, ID 83605).
There is also an option to attend virtually. Those
attending in-person will receive a free lunch. There is also an opportunity to
tour Peaceful Belly Farm, which is located about 15 minutes from the meeting
location, and hear about the ways that they are honoring and fostering a
collaboration with nature to build ecological resilience and community on their
farm.
Workshop
Details:
- Hear
important updates from ISDA and learn about the exciting new national
Transition to Organics Partnership Program (TOPP) - Learn
more about the cryptic and amazing world of soil biology - Learn
more about how your management practices influence earthworms and
nematodes - Share
experiences and knowledge to better understand the challenges and
opportunities with soil fauna assessments
Registration (and lunch) are free! If
you are planning to attend in person, please register by February 28th.
You can register at: https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw
» https://uidaho.co1.qualtrics.com/jfe/form/SV_0ApO2kf6L7Iozbw
Miller Research Winter 2023 Potato Disease Management Seminar
Potato All Locations
Posted on: January 12, 2023 by Jeff Miller
Miller Research will be holding its annual Potato Pest
Management Meeting in person on February 16, 2023, at the Historic Wilson
Theater in Rupert, ID. The meeting will run from 9:00 am to 12:15 pm with a 15-minute
break at 10:30 am. CCA credits and ID, WA, and OR pesticide recertification
credits have been requested for the meeting.
For those not able to attend in person, a virtual option
will be available. If you want to participate by Zoom, contact Cheryn Suarez
(cheryn@millerresearch.com) after registration and she will
send you the link to attend. Virtual attendees will need to answer questions on
Zoom to verify participation. Thus, each person desiring credits needs to be
logged in and stay logged in for the duration of the meeting. Contact us if you
need to make other arrangements.
Registration is $20 to cover the cost of the meeting.
Additional proceeds will be donated to the local 4-H program.
The agenda is in the attached file.
» https://millerresearch.com/event/miller-research-winter-2023-potato-disease-management-seminar/
PNW Pest Alert Network Survey
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PNW Pest Alert Network Survey
Posted on: December 20, 2022 by Ruth Givens
Ruth Givens and Ronda Hirnyck from the University of Idaho Extension are conducting a research study. The purpose of the research is to evaluate the effectiveness of the PNW Pest Alert Network. You are being asked to participate in this study because you are a subscriber to thePNW Pest Alert Network alerts.
Your participation will involve completing a voluntary survey which will provide feedback to the principal investigators. The survey should take about 3 minutes to complete. The survey includes questions such as indicate how you have used the information in the past year? How did you access the PNW Pest Alert Network alerts? How useful were the landscape and garden alerts? Your involvement in the study is voluntary, and you may choose not to participate. You can refuse to answer any of the questions at any time. There are no names or identifying information associated with your responses. There are no known risks in this study, but some individuals may experience discomfort or loss of privacy when answering questions. Data will be housed on a password protected server and deleted upon completion of the study.
The findings from this project will provide information on providing better outreach programming to control landscape and garden pests. If published, results will be presented in summary form only.
Special Incentive: Surveys completed by January 17 will be entered into a drawing for one of three $75 certificates to Texas Roadhouse. Three lucky winners will be announced on the website and the gift cards will be sent out later in January.
If you have any questions about this research project, please feel free to call Ruth Givens at 208-459-6003. By submitting this survey, you certify that you are at least 18 years of age and agree to participate in the above described research study.
Start Survey Here
UI Extension PSEP Recertification Webinar Series
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Posted on: October 26, 2022 by Kimberly Tate
Need Pesticide Credits?
Join the University of Idaho (UI) Extension Pesticide Safety Education Program for the 2022 Fall Recertification Webinar Series via Zoom (no account/camera needed). Each webinar is $10 per applicator. Completed webinars receive 1 Idaho Department of Agriculture pesticide credit.
Mark your calendar for the following webinar topics and their corresponding dates/times:
- Nov. 1 from 10–11 a.m. (MST): Control of Commensal Rodents on Farms and Ranches in Idaho
- Nov. 8 from 10–11 a.m. (MST): Pesticide Labels: What to know for successful pesticide applications
- Nov. 15 from 10–11 a.m. (MST): Russian Olive Management
- Nov. 29 from 10–11 a.m. (MST): Using UI Extension Tools for Pest Management
- Dec. 6 from 10–11 a.m. (MST): Herbicide Resistant Weeds in Idaho
- Dec. 13 from 10–11 a.m. (MST): Recent Invasive Insects in Idaho
For more information contact UI Extension Instructor, Kimberly Tate at (208) 364-4581 or email ktate@uidaho.edu.
» https://marketplace.uidaho.edu/C20272_ustores/web/store_main.jsp?STOREID=53&SINGLESTORE=true
» UI Extension PSEP 2022 Fall Recertification Webinar Series Poster
Ag Talk Report newsletter - October 2022 issue now available
All Crops All Locations
Posted on: October 20, 2022 by Kasia Duellman
The October 2022 issue of the Ag Talk Report newsletter is now available as an attached PDF file.
This issue will soon be available online at our website, where you can also find archived issues: https://www.uidaho.edu/extension/news/ag-talk-tuesday
Idaho Association of Plant Protection 2022 Annual Meeting
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Posted on: October 19, 2022 by Jeff Miller
You are invited to attend the 2022 annual meeting of
the Idaho Association of Plant Protection in Burley, ID, at the Best Western
Inn & Convention Center. The conference will cover all aspects of plant
protection including entomology, nematology, weed science, and plant pathology. The agenda is attached. A total of 6 Certified Crop Advisor (CCA, 5 PM and 1 CM) and 6 Pesticide Recertification credits (ISDA) have been awarded.
Registration begins at 12:30 p.m. on Wednesday and the
program will begin at 1:00 p.m. Registration costs $30.00 and can be made by check or cash at
the door. Credit card payments will be accepted at
the door but will be assessed a 6% processing fee. If you need to pay by credit card ahead of time, please contact Jeff Miller at jeff@millerresearch.com. Online registrations will
close Tuesday, November 1.
Hotel reservations must be made on your own. Special
hotel rates have been negotiated for the participants: $82.00 per night for the Burley Inn (www.burleyinn.com
or 208-678-3501) and $62.00 for the Budget Motel nearby (www.burleybudgetmotel.com
or 208-678-2200).
If you have questions, please contact the co-chairs
for this year: Bill Buhrig (william.buhrig@simplot.com, 208-954-0576) or Albert Adjesiwor (aadjesiwor@uidaho.edu, 208-423-6616).
» https://millerresearch.com/event/2022-idaho-association-of-plant-protection/
final report of 2022 Idaho potato psyllid monitoring
Potato All Locations
potato psyllid
Posted on: September 16, 2022 by Erik Wenninger
This is the final report of the 2022 potato psyllid / Lso monitoring season.
The two psyllids captured last week tested negative for Lso, the bacterium associated with zebra chip disease (ZC).
It was an interesting year with very low psyllid captures overall, but relatively high incidence of Lso. About 22% of all psyllids tested positive for Lso compared to around 1% in most recent years. It is too soon to tell what this low psyllid / high Lso season means for ZC in tubers at harvest. Our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tubers from fields at higher risk sooner rather than later.
Thanks again to all of our cooperators!
With the monitoring season behind us, we urge you to kick the proverbial tires of our new Idaho Pest Monitoring site: https://idahopestmonitoring.org/
Please check it out and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but this is obviously still a work in progress.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
2022 Idaho Association of Plant Protection - Call for Presentations
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Posted on: September 13, 2022 by Jeff Miller
This is an invitation and call for papers for the 2022 annual meeting of the Idaho Association of Plant Protection in Burley, ID, at the Best Western Inn & Convention Center. The conference will cover all aspects of plant protection including entomology, nematology, weed science, and plant pathology.
Please consider contributing research results, observations, unusual pest and disease occurrences and topics which could be discussed as a group, etc. to the meeting. Each presentation will be allotted at least a 20-minute time slot. A final program will be advertised in October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $30.00 and can be made by check or cash. Credit card payments will be available online or will be accepted at the door but will be assessed a 6% processing fee. Online registrations will close Tuesday, November 1. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations must be made on your own. Special hotel rates have been negotiated for the participants: $82.00 per night for the Burley Inn (www.burleyinn.com or 208-678-3501) and $62.00 for the Budget Motel nearby (www.burleybudgetmotel.com or 208-678-2200).
Please reply by email or complete and return the attached sheet. If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information. Responses can be sent to:
Bill Buhrig (william.buhrig@simplot.com)
Albert Adjesiwor (aadjesiwor@uidaho.edu)
psyllid monitoring update - 8 Sep 2022
All Crops All Locations
potato psyllid
Posted on: September 8, 2022 by Erik Wenninger
This week we received traps from 37 of the 72 fields that we had been monitoring this year. Thirteen fields have been vine killed and were not monitored. We found a total of only 2 psyllids in 1 (3%) of the 37 fields. Traps from several fields have yet to be returned to us and these results will be added to the detailed spreadsheet when we receive them.
The two psyllids captured this week were from a field in Canyon County.
None of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC).
Psyllid captures continue to be especially low this week, and thankfully we’ve been seeing less and less Lso in recent weeks.
This week’s collection of traps represents the end of the official monitoring season. Next week we will post Lso results as well as a season wrap up.
In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/
Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
psyllid monitoring update - 1 Sep 2022
Potato All Locations
potato psyllid
Posted on: September 1, 2022 by Erik Wenninger
This week we received traps from 57 of the 72 fields that we are monitoring this year. Four fields have been vine killed and were not monitored. We found a total of only 5 psyllids across 5 (9%) of the 57 fields observed.
Psyllids were captured in the following counties: Canyon (2 fields), Elmore (1 field), and Twin Falls (2 fields).
None of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC).
Psyllid captures were especially low this week, and thankfully we’ve been seeing less and less Lso in recent weeks. With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tubers from fields at higher risk sooner rather than later.
In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/
Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
» https://idahopestmonitoring.org/
psyllid monitoring update, 26th Aug 2022
Potato All Locations
potato psyllid
Posted on: August 26, 2022 by Erik Wenninger
This week we received traps from 61 of the 72 fields that we are monitoring this year. Two fields have been vine killed and were not monitored; we are still waiting to receive traps from 9 fields in the Treasure Valley. We found a total of 16 psyllids across 10 (16%) of the 61 fields observed.
Psyllids were captured in the following counties: Canyon (2 fields), Gooding (1 field), Twin Falls (3 fields), Cassia (2 fields), and Minidoka (2 fields).
Two of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). One was from a field in Canyon County and one from a field in Minidoka County.
We continue to see very low captures of psyllids relative to previous years and numbers are perhaps even lower this week than last week. However, we have also seen relatively high incidence of Lso, especially during previous weeks. With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs. Risk could be mitigated by processing tuber from fields at higher risk sooner rather than later.
In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/
Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
psyllid monitoring update, Aug 18, 2022
Potato All Locations
potato psyllid
Posted on: August 18, 2022 by Erik Wenninger
This week we received traps from 68 of the 72 fields that we are monitoring this year. We found a total of 35 psyllids across 18 (27%) of the 68 fields observed.
Psyllids were captured in the following counties: Canyon (4 fields), Payette (1 field), Gooding (1 field), Twin Falls (4 fields), Cassia (5 fields), and Minidoka (3 fields).
Thankfully, none of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC).
Psyllid captures are increasing as they always seem to do late in the season, though we continue to see very low captures of psyllids relative to previous years. However, we have also seen relatively high incidence of Lso during previous weeks. Most captures this week were from the eastern Magic Valley and western Treasure Valley, with no captures recorded this week from eastern Idaho. We urge growers to watch psyllid captures and Lso incidence closely and to have their IPM programs in place.
In addition to the regular links (below) with details on trap captures over the season, we are developing a new Idaho Pest Monitoring site that includes graphical summaries of our psyllid captures for this season and the previous two seasons: https://idahopestmonitoring.org/
Please click around on the Potato Psyllid / Zebra Chip Monitoring link and send us any feedback that we may use to improve the site. Our eventual goal is to make this a one-stop shop for all Idaho pest monitoring programs, but you can see that this is still a work in progress.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
Farm Input Cost Update from Xiaoli Etienne and Pat Hatzenbuehler - You Missed a Great Ag Talk Tuesday!
All Crops All Locations
Input Costs, Inflation and Interest Rates - Lions and Tigers and Bears - OH MY!
Posted on: August 16, 2022 by Juliet Marshall
Aug. 16 — Farm input cost update: A review of global, national and Idaho data —
U of I Patrick Hatzenbuehler, Assistant Professor & Extension
specialist and Xiaoli Etienne, Associate Professor & Idaho Wheat
Commission Endowed Chair in Commodity Risk Management, presented at
today's Ag Talk Tuesday, the last ATT of the 2022 Season.
To see recordings of this and previous Ag Talk Tuesday sessions, visit our page: https://www.uidaho.edu/extension/news/ag-talk-tuesday
And click on the Ag Talk Tuesday Video Playlist
https://www.youtube.com/playlist?list=PL6g6ZYcM47s85ASnhBlMHbFMD-x-zAGt6
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://www.youtube.com/playlist?list=PL6g6ZYcM47s85ASnhBlMHbFMD-x-zAGt6
Psyllid Captures
Potato All Locations
potato psyllid
Posted on: August 11, 2022 by Tasha Stanzak
This week we received traps from 70 of the 72 fields that we are monitoring this year. We found a total of 29 psyllids across 14 (20%) of the 70 fields observed.
Psyllids were captured in the following counties: Canyon (4 fields), Payette (1 field), Elmore (1 field), Jerome (1 field), Twin Falls (3 fields), Cassia (1 field), and Minidoka (3 fields).
Interestingly, 9 of the 18 psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). Those positive psyllids were found in Canyon, Power, Cassia, and Twin Falls counties.
We continue to see low captures of psyllids this season, but relatively high incidence of Lso. We urge growers to watch psyllid captures and Lso incidence closely and to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
University of Idaho, Parma R and E Center Field Day
All Crops All Locations
Posted on: August 5, 2022 by Jerry Neufeld
The University of Idaho Parma Research and Extension Center
is hosting a Field Day on August 18 in the morning. Click on the pdf below for more information.
more Lso-positive psyllids found
Potato All Locations
potato psyllid
Posted on: August 4, 2022 by Erik Wenninger
This week we received traps from 68 of the 72 fields that we are monitoring this year. We found a total of 18 psyllids across 12 (18%) of the 68 fields observed.
Psyllids were captured in the following counties: Canyon (5 fields), Payette (1 field), Jerome (2 fields), Twin Falls (1 field), Cassia (1 field), Minidoka (1 field), and Power (1 field).
Interestingly, 14 of the 17 psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). Positive psyllids were found in all counties in which we recorded psyllid captures last week.
We continue to see low captures of psyllids this season, but relatively high incidence of Lso. We urge growers to watch psyllid captures and Lso incidence closely and to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
Ag Talk Tuesday - August 2
All Crops All Locations
General announcment - all crops
Posted on: August 1, 2022 by Kasia Duellman
Please join us for the next Ag Talk Tuesday session, August 2, 2022 (tomorrow) at 11:00 AM (MT).
Registration is required (you only need to register once for the whole season). Register here:
https://uidaho.zoom.us/meeting/register/tZElce6uqTwpH9CuQSsCTa_7B01HC8gfuGXn
Share or listen to crop updates, then enjoy our featured topic:
How Maximum Residue Levels (MRL) are set for potato products and Potato variety acceptance for French fries by quick service restaurants (QSR); Presenters: Tom Salaiz and Paul Watson, McCain Foods
This is our second to last session for 2022. The final session will be August 16.
Check out our website for more information: https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZElce6uqTwpH9CuQSsCTa_7B01HC8gfuGXn
Psyllid Update July 28, 2022
Potato All Locations
potato psyllid
Posted on: July 29, 2022 by Tasha Stanzak
This week we received traps from 66 of the 72 fields that we are monitoring this year. We found a total of 17 psyllids across 11 (17%) of the 66 fields observed. Psyllids were captured from three fields in Canyon County on traps that had been deployed for two weeks.
Psyllids were captured in the following counties: Canyon (5 fields), Jerome (1 field), Twin Falls (3 fields), Cassia (1 field), and Minidoka (1 field).
Thankfully, none of the psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC).
Psyllid numbers this week ticked up a bit from last week’s very low count, but overall captures continue to lag far behind the total captures that we observed by this time last year.
Despite the low psyllid captures, given the incidence of Lso observed in previous weeks, we urge growers to watch psyllid captures closely and to have their IPM programs in place.
As promised last week, we can share one of the figure summaries of psyllid captures over the season compared among years. Visit our site, below, to see one such figure illustrating this year’s low captures relative to the last two years. We hope to be able to show you more in the coming weeks as we work out the “bugs” on our new psyllid monitoring page.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Also, to view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
» psyllid_capture_comparison_by_week_2020_2021_to_26_july_2022.pdf
July 21, 2022 psyllid update
All Crops All Locations
Posted on: July 22, 2022 by Erik Wenninger
This week we had traps deployed in 64 of the 72 fields that we are monitoring this year, though traps from two fields were not submitted. We found a total of 12 psyllids across 10 (16%) of the 62 fields observed.
Psyllids were captured in the following counties: Canyon (2 fields), Jerome (1 field), Twin Falls (2 fields), Cassia (2 fields), Minidoka (2 fields), and Power (1 field).
Three of the four psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). Positive psyllids were collected from both of the fields in which we found psyllids last week (in Canyon and Bingham counties).
Psyllid numbers this week ticked up a bit from last week’s very low count, but overall captures remain far behind the 100+ psyllids that we were capturing each week by this time last year.
Despite the low psyllid captures, given the incidence of Lso observed over the last two weeks, we urge growers to watch psyllid captures closely and to have their IPM programs in place.
In other news, we have a new site in development that allows you to explore our psyllid captures by county and region in Idaho over time and to compare this year’s captures with those from recent years. It’s still in the testing phase, but we expect to be able to share at least part of that functionality next week.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Black Bean Aphids in Sugarbeets near Twin Falls
All Crops All Locations
Posted on: July 18, 2022 by Jerry Neufeld
The Amalgamated Sugar Company field consultants are reporting that Black Bean Aphids have been found in sugarbeet fields near Twin Falls, Idaho. Amalgamated Sugar asks that you contact your crop consultant if you have any application questions. Click on the link below for more information about Black Bean Aphid in the Pacific Northwest Insect Management Handbook.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-aphid
First Lso-positive psyllids of the 2022 season
Potato All Locations
potato psyllid
Posted on: July 15, 2022 by Erik Wenninger
This week we had traps deployed in 64 of the 72 fields that we are monitoring this year. We found a total of only 4 psyllids across 2 (3%) of the 64 fields.
Psyllids were captured in the following counties: Canyon (1 field) and Bingham (1 field).
5 of the 12 psyllids collected last week tested positive for Lso, the bacterium associated with zebra chip disease (ZC). Positive psyllids were collected from fields in Canyon, Owyhee, Twin Falls, and Cassia counties.
So far this has been a quiet season for psyllid captures in Idaho; by this time last year we were trapping well over 100 psyllids per week. However, the incidence of Lso observed last week is somewhat concerning. Risk of ZC is a function of both psyllid numbers and Lso incidence, so it is fortunate that psyllid numbers have been low thus far. In all of the fields in which a positive psyllid was found last week, no psyllids at all were found this week.
To view contour maps that illustrate relative psyllid abundance across the landscape, you can set up a free account here: https://potatoes.decisionaid.systems/ Updated maps will be generated every Friday morning.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the link under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Need Pesticide Credits?
All Crops All Locations
Posted on: July 12, 2022 by Jerry Neufeld
The University of Idaho Pesticide Safety Education Program will be offering a three credit webinar recertification series on August 2, 9, and 16. Click on the pdf below for more information.
2022 Miller Research Potato Pest Management Field Day
All Crops All Locations
Posted on: July 8, 2022 by Jeff Miller
Miller Research will be holding its annual potato pest
management field day on Wednesday, August 17. The event is open to the public
and there is no cost to attend but
please RSVP so we can plan appropriately for the event. This can be
done on our website or by responding to cheryn@millerresearch.com or (208)
431-4420.
The field day will begin at the field located at the main
office at Miller Research at 422 E 200 N in Rupert (42.649075 N, -113.585594
E).
A detailed agenda and additional information can be found at the link provided here.
» https://millerresearch.com/event/2022-miller-research-potato-pest-management-field-day/
2022 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllid
Posted on: July 7, 2022 by Erik Wenninger
The University of Idaho and our crop consultant collaborators across the state are once again monitoring for potato psyllids, zebra chip disease (ZC), and liberibacter (Lso), the bacterium associated with ZC. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission and generous in-kind contributions by our cooperators.
Our official monitoring season began with wide deployment of traps last week and will continue for 10 to 12 weeks. We have 72 fields across the state this year, using 4 sticky traps per field at all sites.
This week we had traps deployed in 64 fields, though we are still waiting for traps to come in from three fields. We found a total of 12 psyllids across 7 (11%) of the fields for which we have data. We have been monitoring three fields at the Kimberly Research & Extension Center since mid-May, and, interestingly, this week is the first that we have found potato psyllids. In previous years we nearly always captured psyllids here before the end of May.
Psyllids were captured in the following counties: Canyon (3 fields), Owyhee (1 field), Twin Falls (2 fields), and Minidoka (1 field).
We expect to have results on Lso incidence next week in addition to “heat maps” and additional details.
More information on psyllid monitoring and management can be found here:
https://www.uidaho.edu/cals/potatoes/news/psyllid-management
Details on weekly trap captures can be found here:
https://docs.google.com/spreadsheets/d/1av-jeEKrbDfYis-eS9nB-ZcKzazXyMWmz7NSAiyt3Go/edit?usp=sharing
» https://www.uidaho.edu/cals/potatoes/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1av-jeEKrbDfYis-eS9nB-ZcKzazXyMWmz7NSAiyt3Go/edit?usp=sharing
Powdery Mildew and Cercospora in Sugarbeets
Sugarbeets All Locations
powdery mildew and cercospora
Posted on: June 30, 2022 by Jerry Neufeld
Powdery mildew and Cercospora leaf spot have been found by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the western Treasure Valley. There are several fungicides available for use to treat these diseases. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy due to fungicide resistance in powdery mildew. Always tankmix with at least 5 lbs of sulfur for resistance management purposes when treating against powdery mildew. For the same reason, use a copper product as tank mix partner when treating against Cercospora. DO NOT MIX COPPER AND GLYPHOSATE. Contact your Crop Consultant from The Amalgamated Sugar Company LLC if you have any questions.
Click on the links below for the powdery mildew and cercospora pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
Ag Talk Tuesday - next session July 5
All Crops All Locations
General announcement - all crops
Posted on: June 29, 2022 by Kasia Duellman
The next session of the University of Idaho's Ag Talk Tuesday series features Travis Youngberg (NRCS), who will present on "Sustainable, regenerative and other buzz words." The session starts at 11:00 AM (MT) and registration is required to attend (register once to attend all 2022 sessions).
Current season crop updates precede the featured presentation, and all ag-related (soil, water, nutrient, pest, weed, disease) issues for all crops large or small (throughout Idaho and the region and even the world!) may be represented in these engaging, interactive round-table discussions.
Join us July 5 at 11:00 AM (MT).
Registration information is available by following this link: https://www.uidaho.edu/extension/news/ag-talk-tuesday
Ag Talk Tuesday - June 21, 2022
All Crops All Locations
Posted on: June 17, 2022 by Kasia Duellman
Olga Walsh (owalsh@uidaho.edu)
TOUR DATE CHANGED to JUNE 28TH - Aberdeen Snake River Weed Mg Tour and Field day
All Crops All Locations
Posted on: June 17, 2022 by Pamela Hutchinson
CHANGE THE DATE OF THE Aberdeen Snake
River Weed Mg Tour and Field day
Tuesday JUNE 28TH
instead of June 21st.
Please pass the word
- Registration
8:30 to 9aTour
9a to noon - Followed
by a sponsored lunch. - You
do not need to Pre-register / RSVP
Three
Idaho pesticide recertification credits will be available.
Kimberly does NOT change – will still be held Wednesday June 22nd.
Featured
on the Aberdeen R&E Center Tour Tuesday June 28th
- Herbicide tank mixtures for use in potatoes; Potato variety herbicide tolerance; Simulated Excess
Rainfall Effects on Herbicides and Potato Crop Safety; Herbicide site of action
demonstration. - Weed control in quinoa; Herbicide management in Litchi tomato; Fiber hemp herbicide tolerance.
- In
addition - Updates from: USDA/University of Idaho potato breeding, Potato disease management, Seed potatoes, Barley and Wheat production and varieties.
Stripe (Yellow) rust found in Filer / Buhl area
All Crops All Locations
Stripe rust (yellow rust) in wheat
Posted on: June 17, 2022 by Juliet Marshall
With the spring weather perfect for small grain production, it is no surprise that stripe rust was finally confirmed in southern Idaho. Thanks and a free lunch goes to Trenton Stanger, Westbred, for the first reported sighting in breeding plots near Buhl. The breeding line was significantly infected, but isolated (that is, infections were not widespread in the field). Most of the plots were just past flowering, and there is a long way to go for the winter crop to finish. We are about 10-14 days behind the previous years according to growing degree day estimates. (Be sure to check plant growth stage prior to shutting off irrigation. You don't want to shut off irrigation too soon or too late - remember the general rule of thumb of "Full soil profile of moisture at soft dough before water shut off.")
We are past the window of application for fungicides for winter wheat, and the stripe rust disease pressure is low.
The greatest threat will be for susceptible spring wheat varieties. Scout spring wheat fields for infection, and report infections to University personnel in order for us to track and report new occurrences. Fungicide applications will likely not be required for moderately resistant and resistant varieties. Fungicides on the market are equally effective as stripe rust protectants, but as the flag leaves emerge, do not use strobilurin fungicides as that increases risk for DON contamination in grain from FHB or scab infection.
Remember to read and follow all label directions.
The Ag Talk Report and the next Ag Talk Tuesday session
All Crops All Locations
General announcement - all crops
Posted on: June 1, 2022 by Kasia Duellman
The first issue of 2022 for the Ag Talk Report, a newsletter that supplements the Ag Talk Tuesday series, is now available. Previous issues are available online at the Ag Talk Tuesday website: www.uidaho.edu/ag-talk
The next Ag Talk Tuesday session is Tuesday, June 7. Join us for a panel discussion on herbicide resistant weeds in Idaho. Registration is required (one time registration allows you to attend all sessions in 2022). Find the link to register on the Ag Talk Tuesday website.
Agronomic Soil Testing Class - Online
All Crops All Locations
Posted on: May 31, 2022 by Stuart Reitz
This online course is designed for crop advisors, agronomists, and others testing soil on farms or in laboratories. The course is led by Oregon State University Extension Soil Fertility Specialist, Dr. Amber Moore.
Lecturers: Various OSU Extension Agronomists and Soil Scientists
Time commitment: 1-3 hours per week for 6 weeks. The 19 lecture modules can be accessed at your convenience.
Cost: $495 (+$60 registration fee)
CCA Continuing Education Units: Six Nutrient Management CEUs
Course topics include:
• Choosing a Soil Testing Lab
• Soil pH and Buffer pH
• Extractable Cations
• Nitrate and Mineralizable Nitrogen
• Phosphorus, Potassium, and Sulfate
• Micronutrients
• Salts (Electrical Conductivity)
• Organic Matter & Carbon
• Soil Health Indicators
Registration Link:
https://workspace.oregonstate.edu/course/agronomic-soil-testing
» https://workspace.oregonstate.edu/course/agronomic-soil-testing
Ag Talk Tuesday - May 17th at 11:00 AM Mountain
All Crops All Locations
Ag Talk Tuesdays
Posted on: May 16, 2022 by Juliet Marshall
May 17 — FSA programs and policies — Matt Gellings, Ben Thiel — Doug Finkelnburg (host)
Olga Walsh (owalsh@uidaho.edu)
| KASIA M. DUELLMAN, Ph.D. Assistant Professor of Plant Pathology and Extension Specialist College of Agricultural and Life Sciences Entomology, Plant Pathology and Nematology kduellman@uidaho.edu webpages.uidaho.edu/extension-seed-potato/ 208-757-5476 | 701-793-9456 (Cell) U of I Idaho Falls | 1776 Science Center Drive, Suite 205 | Idaho Falls ID 83402 | United States |
Grain production worldwide in dire straights
Small Grains All Locations
Cereal Production 2022
Posted on: May 4, 2022 by Juliet Marshall
All - I usually do not send pest alerts out like this with scary titles as I do not believe in “saber rattling”. But there are several situations occurring worldwide that are concerning to me in regards to wheat production.
1) The war in Ukraine - beyond the obvious disruption to everyday activities associated with agricultural production, the destruction of port cities and export infrastructure in addition to targeted destruction of grain and shipping facilities in Ukraine, and shipping of grain stores to Russia will reduce worldwide supplies. https://phys.org/news/2022-04-india-wheat-crop-snags-export.html
2) Heat wave in India - https://stories.app.goo.gl/6Gjk Temperatures above 110 degrees F in central India (46.5 degrees Celsius (114.08 Fahrenheit) have reduced grain production in some areas by as much as 50%.
3) Reduced production in China - https://www.reuters.com/business/china-ensure-agricultural-product-supplies-including-grains-2022-03-05/
BEIJING, March 5 (Reuters) - The condition of China's winter wheat crop could be the "worst in history", the agriculture minister said on Saturday, raising concerns about grain supplies in the world's biggest wheat consumer.
4) US production projections are for lower than average. From the Idaho Wheat Commission Newsletter on 4/29/22: Chicago wheat futures rebounded on Tuesday as the worst U.S. winter crop rating since 1989 put attention back on global supply already strained by the war in Ukraine.
Current conditions in Idaho and the PNW are favorable to winter wheat production with the greatest constraint associated with dry conditions. In fact, the extremely cool weather has delayed plant maturity, increasing the potential for heavy stooling of the wheat crop. Looking at data from the UI potato website, growing degree days are far behind previous years:
While data from Aberdeen is not available on Agrimet (https://www.usbr.gov/gp/agrimet/agrimet_station_list.html) comparing data from Kimberly and Parma show a rather surprising lag in GDD throughout southern Idaho.
WHAT DOES THIS MEAN FOR THIS YEAR’S GRAIN PRODUCTION IN IDAHO?
Heavy stooling increases yield potential for winter wheat and winter barley. While the weather is unpredictable, if the conditions stay favorable to grain growth, consider applications of plant growth hormones to reduce lodging. (If it is not too late in your area.)
Take advantage of the extra (and localized) rain events to increase subsoil moisture storage while irrigation is available. Yes, if you have irrigation, use it to increase soil storage capacity for later season moisture shortages, especially beneficial if prediction for hot and dry late spring and summer weather actually occurs.
Control yield-robbing weeds.
Scout for diseases. Stripe rust literally can annihilate wheat and barley production. The Good news is that we usually have low barley stripe rust disease pressure and wheat stripe rust forecasts from Dr. Xianming Chen are for low to moderate disease pressure in the Washington and Palouse areas. "Recommendations for the eastern Pacific Northwest - As stripe rust has not been found and the disease is likely to have a late start, fungicide application is not recommended in the early growth season at the time of herbicide application for winter wheat, unless stripe rust is observed in the fields.” Dr. Chen, 3/7/22 email.
Due to enduring drought conditions throughout the west (including CA and NV, downwind of southern Idaho production), I expect low disease pressure from stripe rust. I also do not recommend fungicide application at herbicide timing for stripe rust control, even in susceptible varieties. Always scout, and if sound, report stripe rust infections to me ASAP so I can get the word out.
Even if planted early, spring grains has gotten a delayed start due to cool conditions and emergence has been slow. If expected hot dry conditions develop in May through July, yield potential can be reduced with heat at flowering. A lot depends on (obviously) the temperatures as the season progresses.
Pay close attention to conditions at flowering for scab (Fusarium head blight) and potential mycotoxin contamination from DON.
When crops are harvest ready, get them out of the field ASAP to reduce the likelihood of sprout damage from August rains.
This year may be one of the most profitable years for grain production so PAY ATTENTION to the details.
Wishing everyone the best for the upcoming season!
Cheers,
Juliet
Plant Sciences Department Head, Endowed Research Professor, Cereals Pathology and Agronomy
Idaho Falls R&E Center
1776 Science Center Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
http://www.uidaho.edu/extension/cereals/scseidaho/
“We shouldn’t be looking for certainty. Instead, we should be saying to ourselves ‘When do we have enough evidence to make good decisions.’” Cailin O’Connor UC Irvine
Growing Degree Days for Potatoes
Potato All Locations
Posted on: April 28, 2022 by Nora Olsen and Mike Thornton
<p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%">Snow, hail,
rain, sunshine, and wind appear to be interchangeable this April. To focus on
the temperatures so far, calculating growing degree days (GDD) or heat units is
one method to look at the effect of temperature on the potato crop. Plant
growth and development is greatly influenced by temperature, and we use GDD to
get an idea of how the plant is developing throughout the season. It also gives
a great snapshot on how the current season compares to previous seasons. Daily
GDD is calculated by adding the maximum temperature and the minimum
temperature, dividing by 2 and subtracting a base temperature. The base
temperature is used to define the temperature at which potato growth is
diminished. <o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%">To quantify this
period of cold temperatures, we collated the cumulative GDDs for Parma,
Kimberly and Aberdeen. The source of the GDD was AgriMet (www.usbr.gov/pn/agrimet/wxdata.html)
weather stations located at the three sites. The AgriMet calculation of GDD
uses 50F as a minimum and 86F as a maximum. There are limitations to the use of
these minimum and maximums since potatoes will grow outside of this range, but
these calculations can still provide a reasonable prediction of the temperatures
impacting potato growth. The GDD these past weeks is quite a contrast to the
GDD from 2021 and the 11-year average.<o:p></o:p></span></p><p>
</p><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%">To help
provide a picture of the relationship between temperature and plant
development, we will continue to update the GDD graphs weekly for the three
locations and post at </span><a href="http://www.uidaho.edu/cals/potatoes/storage"><span style="font-size:12.0pt;
line-height:107%">www.uidaho.edu/cals/potatoes/storage</span></a><span style="font-size:12.0pt;line-height:107%">. Aberdeen GDD was not available at
this time but will be posted on the website when available.<o:p></o:p></span></p>
Ag Talk Tuesdays resume for 2022
All Crops All Locations
General announcment
Posted on: April 19, 2022 by Kasia Duellman
We are excited to announce that the University of Idaho Extension's Ag Talk Tuesday sessions resume May 3 for the 2022 season.
Each session starts at 11:00 AM (MDT) on the first and third Tuesdays, May through August.
These live events begin with crop updates where all participants are invited to contribute, followed by a featured presentation. You can find a schedule of featured topics and speakers (subject to change) and more information on our website:
https://www.uidaho.edu/ag-talk
Registration is required to attend. You only need to register once to attend all sessions. Once you register, information on how to attend via Zoom or by calling in by phone will be sent to you in a separate email.
To register, click this link (or copy and paste the following into your web browser):
https://uidaho.zoom.us/meeting/register/tZElce6uqTwpH9CuQSsCTa_7B01HC8gfuGXn
Please join us starting May 3 at 11:00 AM (MDT) for these live, online sessions that focus on agriculture - current season issues related to pests, diseases, weeds, diagnostics, soil health, irrigation/water, agronomy & more along with featured topics and guest speakers.
For questions, please contact one of the organizers:
Kasia Duellman (kduellman@uidaho.edu)
Doug Finkelnburg (dougf@uidaho.edu)
Pam Hutchinson (phutch@uidaho.edu)
Juliet Marshall (jmarshall@uidaho.edu)
Olga Walsh (owalsh@uidaho.edu)
Seeking help for a research project
Potato All Locations
Posted on: April 7, 2022 by Jeff Miller
A research project funded by the tri-state (ID, WA, and OR) research consortium is looking for some help (see below). If you are able and interested, please contact David Wheeler (contact info below).
Good luck with planting!
Jeff
A team of scientists at Washington State University, Oregon State University and USDA-ARS received a second year of funding from the Northwest Potato Research Consortium to characterize so called “virgin” soils that have never been planted with potato. Growers have long observed yield increases (14-26%) when planting potato in virgin soils compared to nearby non-virgin soils that have been planted in potato. Our short term goal is to document the properties (e.g. biological, physical, and chemical) in the soil associated with these yield increases. Long term we want to use this information to reproduce these yield increases in commercial fields. To do this we need your help!
Can you please reach out to us if you know any pairs of potato fields that will be planted with potato this year and were either (i) planted with potatoes within the past 5 years (non-virgin fields) or (ii) never planted with potato (virgin fields)? With your permission we can then visit each field, sample soil from each field before planting, and sample soil from nearby “native soil” that has never been planted with any crop. Once we have these three types of samples we will characterize the soil pathogen loads, nematode diversity and abundance, and soil biological, physical, and chemical properties. Lastly, we will bring the soils to a common location and plant potatoes in each soil to quantify potato performance in each soil type.
Please contact David Wheeler via email (David.wheeler@wsu.edu) or mobile (215-880-3024). Thank you all in advance for your time and attention. We look forward to working together this year.
David Wheeler, Cynthia Gleason, Ken Frost, Deirdre Griffin LaHue, and Tim Paulitz
Potato soil health survey - your help is requested!
Potato All Locations
Posted on: February 18, 2022 by Jeff Miller
Researchers from the University of Idaho, Montana State University, and the University of Minnesota would like your feedback on potato production and soil health. The results of this survey will influence the important research done by these teams. They'll ask questions about crop rotations, soil health management practices, and fumigation in this brief survey. As a token of their appreciation, you'll be eligible to enter into a drawing for a $100 Cabela's (or equivalent) gift card after you've completed the survey. If you have any questions, please contact Alex Maas at alexmaas@uidaho.edu.
» https://uidaho.co1.qualtrics.com/jfe/form/SV_8bQye9iBZ5UHI0K
UI Extension Pesticide Safety Education Program
All Crops All Locations
Posted on: February 2, 2022 by Jerry Neufeld
The UI Extension Pesticide Safety Education Program will be offering pre-license trainings ONLINE, via Zoom. This 4-day class is designed to be both with live instructors and work on your own, at your own pace. Students are required to have a computer or smart tablet with internet access. You will learn core pesticide safety practices and prepare for the following Idaho State Department of Agriculture pesticide exams; Private Applicator, Professional Applicator: Law and Safety; Agricultural Herbicide; Agricultural Insecticide; Ornamental Herbicide; Ornamental Insecticide; General Pest; Right of Way; and Chemigation.
Classes meet twice daily Monday through Thursday. Choose one of the following weeklong sessions:
1. March 14-17, 2022, from 9-11:30 am (MST) and 1:30-4 pm (MST). Registration closes, March 9, 2022.
2. March 28-31, 2022, from 9-11:30 am (MST) and 1:30-4 pm (MST). Registration closes, March 23, 2022.
Click on the pdf below for more information.
2022 Miller Research Potato Pest Management Meeting Final Notice
Potato All Locations
Posted on: January 31, 2022 by Jeff Miller
Miller Research will be holding its annual Potato Pest Management Meeting in person on February 10, 2022, at the Historic Wilson Theater in Rupert, ID. The meeting will run from 8:30 am to 12:00 pm with a 30-minute break at 10:00 am. Three credits have been awarded for CCA (integrated pest management), Idaho, Oregon, and Washington pesticide recertification.
For those not able to attend in person, a virtual option will be available. If you want to participate by Zoom, contact Cheryn Suarez (cheryn@millerresearch.com) after registration and she will send you the link to attend. Virtual attendees will need to answer questions on Zoom to verify participation. Thus, each person desiring credits needs to be logged in. Contact us if you need to make other arrangements.
Registration is $20 to cover the cost of the meeting. After covering meeting costs, additional proceeds will be donated to the 4-H program.
Meeting agenda:
8:00 am – 8:30 am: Registration
8:30 am – 9:00 am: Seed treatments for Fusarium dry rot management
9:00 am – 9:30 am: The impact of anastomosis group on Rhizoctonia canker management
9:30 am – 10:00 am: Verticillium wilt control
10:00 am – 10:30 am: Break
10:30 am – 11:00 am: Control options for powdery scab and potato mop-top virus
11:00 am – 11:30 am: PVY and Seed Health (Dr. Jonathan Whitworth, USDA)
11:30 am – 12:00 pm: Managing pesticide resistance
» https://millerresearch.com/event/2022-miller-research-potato-pest-management-meeting/
Treasure Valley Virtual IPM Meeting
All Crops All Locations
Posted on: January 25, 2022 by Jerry Neufeld
The Treasure Valley Virtual IPM Meeting is being held on Tuesday February 8th at 9 am. After registering (only requires name and email) you will receive information about joining the meeting. The meeting is free to attend and two ISDA credits, two ODA (core) credits and two CCA IPM Credits are available. Click on the pdf below for the registration link and more program information.
Idaho Potato Conference
Potato All Locations
Posted on: January 13, 2022 by Nora Olsen and Mike Thornton
Early
registration ends tomorrow Friday January 14th. Register Now!
The 54th
annual Idaho Potato Conference and Eastern Idaho Ag Expo presented by the
University of Idaho and Spectra Productions will be live and in-person in 2022.
Set your calendars to attend the 2022 Idaho Potato Conference January 19 and 20
in Pocatello, ID. Attend your choice of educational presentations and workshops
from three concurrent sessions over the one and half-day conference and take
some time to visit the adjoining trade show that features over 70 booths and
displays highlighting agricultural products and services.
2022 highlights of the Idaho Potato
Conference:
· There
will be several seminars and workshops on the impact of the 2021 season
including heat impact on potatoes, soil health, storage losses, and irrigation
efficiency.
· Invited
speaker Dr. Carrie Wohleb from Washington State University will present on the Impacts
of Wildfire Smoke on Potatoes.
· Current
outlooks on water, economics, labor and sustainability from industry leaders
will bring us up to date on major topics for the potato industry.
· Special
guests from the National Potato Council, Potatoes USA, Idaho Potato Commission
will provide industry updates.
· Multiple
pest protection presentations and workshops including tank mixing
considerations, rotational crops and herbicide carryover issues, pollinators
and potatoes, Fusarium dry rot aggressiveness, managing Rhizoctonia, diagnosing
crop injury, pesticide resistance management, alternatives to fumigation,
rotation and potato cyst nematode control, and comprehensive disease and weed
management workshops.
· Economists
will present a workshop on the profitability implications of fertilizer cost
increases in addition to a discussion on the seasonality of retail rejections.
The latter discussion will dovetail with a one-hour workshop on the impact of
bruise on quality.
· A
workshop dedicated to ‘Everything you wanted to know about potato viruses, but
were afraid to ask.’ Come with questions to ask a panel of experts on the topic
of tuber necrotic diseases.
· Seminars
and workshops in Spanish will be held both days and include a wide variety of
topics from beneficial insect identification to farm safety discussions.
· Earn
CCA (CEU) and pesticide recertification credits at seminars and workshops
throughout the in-person conference.
· Select
theater presentations will be recorded and available at the conference website
after the conference. Registration for the conference will be required to gain
access to the recorded presentations.
·
Cost for
pre-registration is $40 per person. Pre-registration will close at 5 pm MT on
January 14. After that time, please plan to register in-person at the
conference (cost increase to $50). We strongly encourage everyone to
pre-register and avoid the lines at the conference. Additional details
regarding the agenda, topics, and registration can be found at https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference.
» https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference.
2022 Idaho Potato Conference
Potato All Locations
Posted on: January 6, 2022 by Nora Olsen and Mike Thornton
Register
Now!
The 54th
annual Idaho Potato Conference and Eastern Idaho Ag Expo presented by the
University of Idaho and Spectra Productions will be live and in-person in 2022.
Set your calendars to attend the 2022 Idaho Potato Conference January 19 and 20
in Pocatello, ID. Attend your choice of educational presentations and workshops
from three concurrent sessions over the one and half-day conference and take
some time to visit the adjoining trade show that features over 70 booths and
displays highlighting agricultural products and services.
2022 highlights of the Idaho Potato
Conference:
· There
will be several seminars and workshops on the impact of the 2021 season
including effect of the weather on soil fertility, heat impact on potatoes,
soil health, storage losses, and irrigation efficiency.
· Invited
speaker Dr. Carrie Wohleb from Washington State University will present on the Impacts
of Wildfire Smoke on Potatoes.
· Current
outlooks on water, economics, labor and sustainability from industry leaders
will bring us up to date on major topics for the potato industry.
· Special
guests from the National Potato Council, Potatoes USA, Idaho Potato Commission
will provide industry updates.
· Multiple
pest protection presentations and workshops including tank mixing
considerations, rotational crops and herbicide carryover issues, pollinators
and potatoes, Fusarium dry rot aggressiveness, managing Rhizoctonia, diagnosing
crop injury, pesticide resistance management, alternatives to fumigation, rotation
and potato cyst nematode control, and comprehensive disease and weed management
workshops.
·
Economists will present a workshop on
the profitability implications of fertilizer cost increases in addition to a
discussion on the seasonality of retail rejections. The latter discussion will
dovetail with a one-hour workshop on the impact of bruise on quality.
·
A workshop dedicated to ‘Everything
you wanted to know about potato viruses, but were afraid to ask.’ Come with
questions to ask a panel of experts on the topic of tuber necrotic diseases.
·
Seminars and workshops in Spanish will
be held both days and include a wide variety of topics from beneficial insect
identification to farm safety discussions.
Earn CCA (CEU) and pesticide
recertification credits at seminars and workshops throughout the in-person
conference.
Select presentations will be recorded
and available at the conference website after the conference. Registration for the
conference will be required to gain access to the recorded presentations.
Cost for pre-registration is $40 per person ($50 at the
door). We strongly encourage everyone to pre-register and avoid the lines at
the conference. Additional details regarding the agenda, topics, and
registration can be found at https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference.
» https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
2022 Pre-License Training for Ornamental Pesticide Applicators
All Crops All Locations
Posted on: December 20, 2021 by Nic Usabel & Kimberly Tate
The UI Extension Pesticide Safety Education Program will be offering pre-license training during the 2022 Idaho Horticulture Expo in Boise. This training will be in-person with a two-day agenda. Focus will be on the following categories: Ornamental Insecticide (OI), Ornamental Herbicide (OH), General Pest (GP), and Core (CO).
Registration includes access to eLearning modules and study materials housed on the National Extension Foundation website. These materials prepare students for the 2-day class and the statewide exams. ALL materials will be available to each registered student with continued access until three weeks after the training. January 20 – 21, 2022, daily at 9am – 4pm MST (limit 45 students) Boise Centre, 850 W Front St., Boise 83702
This educational training is funded through an ISDA grant. There will be no cost to the student. COVID-19 restrictions will be determined by the instructors. Registered students will be notified of the current guidelines. To register, visit our website https://www.uidaho.edu/extension/ipm
For questions contact:
- Ronda Hirnyck | rhirnyck@uidaho.edu | 208-364-4046
- Kimberly Tate | ktate@uidaho.edu | 208-364-4581
2022 Miller Research Potato Pest Management Meeting
Potato All Locations
Posted on: December 17, 2021 by Jeff Miller
After meeting virtually in 2021, Miller Research will be
holding its annual Potato Pest Management Meeting in person on February 10,
2022, at the Historic Wilson Theater in Rupert, ID. The meeting will run from
8:30 am to 12:00 pm with a 30-minute break at 10:00 am. Three CCA (integrated
pest management) credits and three ISDA pesticide recertification credits have
been awarded for the meeting. Oregon and Washington credits have been requested.
We are working on making a virtual option available. If this
works, virtual attendees will still need to pay the registration fee and answer
questions during the presentation as proof of attendance.
Registration is $20 to cover the cost of the meeting.
Additional proceeds will be donated to the 4-H program.
Meeting agenda:
8:00 am – 8:30 am: Registration
8:30 am – 9:00 am: Seed treatments for Fusarium dry rot
management
9:00 am – 9:30 am: The impact of anastomosis group on
Rhizoctonia canker management
9:30 am – 10:00 am: Verticillium wilt control
10:00 am – 10:30 am: Break
10:30 am – 11:00 am: Control options for powdery scab and
potato mop-top virus
11:00 am – 11:30 am: PVY and Seed Health (Dr. Jonathan
Whitworth, USDA)
11:30 am – 12:00 pm: Managing pesticide resistance
» https://millerresearch.com/event/2022-miller-research-potato-pest-management-meeting/
2021 Annual Survey Winners
All Crops All Locations
Posted on: December 10, 2021 by Jerry Neufeld
Thanks to everyone that completed a 2021 annual survey for the PNWPestAlert.net website. The winners of the Texas Roadhouse gift cards are Ron Y, Mike M, and Kevin K.
Register for the in-person 2022 Idaho Potato Conference
Potato All Locations
Posted on: November 29, 2021 by Nora Olsen and Mike Thornton
Registration
is now OPEN!
The 54th
annual Idaho Potato Conference and Eastern Idaho Ag Expo presented by the
University of Idaho and Spectra Productions will be live and in-person in 2022.
Set your calendars to attend the 2022 Idaho Potato Conference January 19 and 20
in Pocatello, ID. Attend your choice of educational presentations and workshops
from three concurrent sessions over the one and half-day conference and take
some time to visit the adjoining trade show that features over 70 booths and
displays highlighting agricultural products and services.
Seminars and workshops in Spanish will
be held both days and include a wide variety of topics from beneficial insect
identification to farm safety discussions.
Earn CCA (CEU) and pesticide
recertification credits at seminars and workshops throughout the in-person
conference.
Select presentations will be recorded
and available at the conference website after the conference. Registration for the
conference will be required to gain access to the recorded presentations.
Cost for pre-registration is $40 per person ($50 at the
door). We strongly encourage everyone to pre-register and avoid the lines at
the conference. Additional details regarding the agenda, topics, and
registration can be found at https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference.
2021 Idaho Association of Plant Protection registration now available online
All Crops All Locations
Posted on: October 25, 2021 by Jeff Miller
The agenda has been set and registration is now available for the 2021 Annual Idaho Association of Plant Protection (IAPP) annual meeting.
For those who want to attend by Zoom, you must register for the Zoom meeting (a separate registration for each day) and then you must also register at the following link:
https://millerresearch.com/event/2021-idaho-association-of-plant-protection/
After registering at the link, you will receive an email allowing you to pay online via PayPal. Registration in person will be available at 12:30 pm on Wednesday and can be paid by check or cash.
Three ISDA pesticide recertification credits and 3.5 CCA Pest Management credits are available each day. The $15 registration fee covers both days and the cost is the same if you attend one or both days.
» https://millerresearch.com/event/2021-idaho-association-of-plant-protection/
2021 Pesticide Fall Recertification Webinar Series
Landscape & Garden All Locations
Posted on: October 22, 2021 by Nic Usabel
The UI Extension Pesticide Safety Education Program (PSEP) will be conducting 6-webinars on Tuesdays from Nov. 2 - Dec. 14. Completed webinars receive one-pesticide credit*. These webinars are synchronous and held from 10 AM - 11:15 AM (MST). The cost is $10 per applicator/webinar. Enroll now on our UI Marketplace HERE. Check out the details in the attached UIPSEP Fall Recertification Webinars poster. For more information, contact Kimberly Tate at ktate@uidaho.edu.
*For pesticide credit: Pesticide applicators must answer questions throughout the webinar session. This requires individual computer and internet access for each user. Answers will be collected to confirm attendance was maintained for the entire webinar.
Pesticide Fall Recertification Webinar Series
All Crops All Locations
Posted on: October 22, 2021 by Kimberly Tate
The UI Extension Pesticide Safety Education Program (PSEP) will be conducting 6-webinars on Tuesdays from Nov. 2 - Dec. 14. Completed webinars receive one-pesticide credit*. These webinars are synchronous and held from 10 AM - 11:15 AM (MST). The cost is $10 per applicator/webinar. Enroll now on our UI Marketplace HERE. Check out the details in the attached UIPSEP Fall Recertification Webinars poster. For more information, contact Kimberly Tate at ktate@uidaho.edu.
*For pesticide credit: Pesticide applicators must answer questions throughout the webinar session. This requires individual computer and internet access for each user. Answers will be collected to confirm attendance was maintained for the entire webinar.
Bird cherry-oat aphids on the move; time to inspect fields
Small Grains All Locations
Bird Cherry Oat Aphids
Posted on: October 8, 2021 by Jerry Neufeld
The winged from of bird cherry-oat aphids has been observed in winter wheat in Twin Falls County, Idaho; the wheat was planted in late-September.
The observed aphid numbers were relatively low (averaging one per young seedling), but it indicates that the aphids are on the move, and that the numbers could increase, if the mild weather continues.
Although bird cherry-oat aphids rarely cause significant damage to small grains by direct feeding, they are efficient vectors of Barley yellow dwarf virus (BYDV).
See below publication for more information on BYDV symptoms and the aphid vectors.
» https://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1210.pdf
Artificial Intelligence for Insect Identification
All Crops All Locations
Posted on: September 30, 2021 by Jerry Neufeld
As a component of a USDA-funded project, Harnessing
artificial intelligence for implementing integrated pest management in
small-grain production systems, the University of Idaho is developing a system
to automatically identify insects in wheat and other crops based on submitted
cellphone images.
To develop this system, we need your help with collecting a
large number of photographs of pests and beneficial insects observed in cereal
cropping systems
(cereals and rotation crops) throughout the region. To date,
we have received more than 1300 insect photos- Thank you for your continuing
support!
We will need thousands of photos to train our computer
algorithm to enable the system to generate the most accurate identifications of
unknown samples.
To help us develop this tool, please upload insect
photographs through this link: https://cerealpestaid.net/
2021 Idaho Association of Plant Protection Agenda - Nov. 3-4, Burley Best Western
All Crops All Locations
Posted on: September 28, 2021 by Jeff Miller
The agenda has now been posted for the 2021 Idaho Association of Plant Protection annual meeting on Nov. 3-4 in Burley, ID. See the attached files for more information. ISDA pesticide recertification credit and CCA Pest Management credits have been requested.
» https://millerresearch.com/event/2021-idaho-association-of-plant-protection/
Psyllid Update September 17, 2021
Potato All Locations
potato psyllid
Posted on: September 17, 2021 by Erik Wenninger
This is the final report of the 2021 Idaho psyllid monitoring program.
From our samples from last week, we found our first Lso-positive psyllid of the season, on a site in Owyhee County. All other psyllids tested from last week were negative for Lso, the bacterium associated with zebra chip disease (ZC). The total percent positive among all sites for the season was 0.08%, which is the lowest incidence of Lso we have observed during the past decade.
During mid- to late July, it appeared that overall psyllid captures would be relatively high this year; however, captures were lower during August, which is the time of year that our psyllid captures are often highest. It is possible that the high temperatures during June to July contributed to higher captures and the more moderate temperatures in August contributed to more modest captures. In the end, overall captures across the season were relatively modest compared to other seasons, and similar to overall captures last year.
Greater abundance of psyllids earlier during the season should generally contribute to greater risk of ZC disease development over the season. However, risk of ZC is a function of both psyllid abundance over the season and Lso incidence. The extremely low incidence of Lso observed in psyllids coupled with relatively modest captures overall, suggests relatively low risk of ZC in the crop this season.
To dive more deeply into the capture data over the season, you can view contour maps that illustrate relative psyllid abundance across the landscape each week here: https://potatoes.decisionaid.systems/
More details can also be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid Update September 9, 2021
Potato All Locations
potato psyllid
Posted on: September 9, 2021 by Erik Wenninger
This week we had traps deployed in 48 fields, though we are still waiting for traps from one Treasure Valley field. We found a total of 66 psyllids across 15 (32%) of the 47 fields for which we have data. With many fields undergoing vine kill, this is our last week of retrieving sticky traps. We will, however, report on Lso results and a season recap next week.
Overall psyllid captures this week were similar to the last two weeks, with considerably lower captures than for most recent weeks. We recorded moderate captures in parts of the Treasure Valley and Owyhee to Elmore counties as well as near Twin Falls. We recorded low captures elsewhere.
Psyllids were captured in the following counties: Canyon (3 fields), Owyhee (3 fields), Elmore (1 field), Twin Falls (5 fields), Minidoka (2 fields), and Cassia (1 field).
All psyllids tested from last week were negative for Lso, the bacterium associated with zebra chip disease (ZC). Testing of late-arriving psyllids from one field in Canyon County is pending. Thus far, all of our psyllid samples have been negative.
With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs.
To view contour maps that illustrate relative psyllid abundance across the landscape, set up a free account here: https://potatoes.decisionaid.systems/
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid Update September 2, 2021
Potato All Locations
potato psyllid
Posted on: September 3, 2021 by Erik Wenninger
This week we had traps deployed in 58 fields, though we are still waiting for traps from one Treasure Valley field. We found a total of 72 psyllids across 13 (23%) of the 57 fields for which we have data. Many fields have undergone vine kill and will no longer be sampled.
Overall psyllid captures this week and last week have been considerably lower than for recent weeks. Contour maps (see links below) graphically reflect relatively high abundance of psyllids collected in Elmore County. We recorded moderate to low captures in other parts of the state and zero captures in eastern Idaho.
Psyllids were captured in the following counties: Canyon (3 fields), Owyhee (3 fields), Elmore (2 fields), Gooding (1 field), and Twin Falls (4 fields).
We expect to get Lso results tomorrow, and we will post them on our sites (below) as soon as they are available. Thus far, all of our previous psyllid samples have been negative for Lso, the bacterium associated with zebra chip disease (ZC).
With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs as late as two weeks before vine kill. Please consider this in your late-season IPM programs.
To view contour maps in more detail, set up a free account here: https://potatoes.decisionaid.systems/
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
2022 Idaho Potato Conference Call for Topics
Potato All Locations
Posted on: August 31, 2021 by Nora Olsen and Mike Thornton
This the first call for
topics for the 2022 Idaho Potato Conference that will take place in Pocatello,
ID on January 19th and 20th. Please provide your ideas for potential
workshops and presentations for this year's conference to Nora Olsen (norao@uidaho.edu) or Mike Thornton (miket@uidaho.edu) by September 30th so that we can put together
a preliminary list for the program planning meeting. Please also suggest
a speaker if you have someone in mind that would do a good job of covering the
topic.
Psyllid Update August 26, 2021
All Crops All Locations
potato psyllid
Posted on: August 26, 2021 by Erik Wenninger
This week we had traps deployed in all 73 fields, though we are still waiting for traps from two fields in eastern Idaho. We found a total of 64 psyllids across 22 (31%) fields.
Overall psyllid captures were considerably lower than for recent weeks. Contour maps (see links below) graphically reflect relatively high abundance of psyllids collected in some fields in the western Treasure Valley and in Elmore County, but this abundance is markedly lower than in previous weeks. Moderate to low captures were recorded in the Magic Valley and very few captures were recorded east of the Magic Valley.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (9 fields), Payette (1 field), Owyhee (2 fields), Elmore (2 fields), Twin Falls (6 fields), Cassia (1 field), and Bingham (1 field).
Once again, all psyllids tested from last week were negative for Lso, though testing of a single psyllid from last week is still pending. We have yet to find any Lso-positive psyllids this season.
With harvest season upon us, it is worth remembering that our studies in Russet Burbank showed that ZC can develop during storage if infection occurs about two weeks before vine kill. Please consider this in your late-season IPM programs
To view contour maps in more detail, set up a free account here: https://potatoes.decisionaid.systems/
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures
-Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» https://potatoes.decisionaid.systems/
2021 Idaho Association of Plant Protection - Nov. 3-4, Burley Best Western
All Crops All Locations
Posted on: August 25, 2021 by Jeff Miller
The 2021 Idaho Association of Plant Protection Annual Meeting will be held Wednesday, November 3 at 1:00 pm to Thursday, November 4 at 1:00 pm at the Best Western Inn & Convention Center, Burley, Idaho. Registration will begin at 12:30 PM on Wednesday. The conference will cover all aspects of plant protection including entomology, nematology, weed science, and plant pathology.
Please consider contributing to the meeting research results, observations, unusual pest and disease occurrences, and topics that could be discussed as a group. Each presentation will be allotted a 20-minute time slot. A final program will be advertised in October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations must be made on your own. Special hotel rates have been negotiated for the participants: $89.00 per night for the Burley Inn (www.burleyinn.com or 208-678-3501) and $65.00 for the Budget Motel nearby (www.burleybudgetmotel.com or 208-678-2200). Please refer to the attached hotel flyer.
Please complete the attached form if you want to participate and reply by email to Alexander Karasev (akarasev@uidaho.edu). If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information. Responses can be sent to:
Alexander Karasev: akarasev@uidaho.edu
University of Idaho, Dept. of EPPN
Moscow, ID 83844-2329
(208) 885-2350
Please respond by September 17th, 2021. Also, please share with any who may have an interest.
» https://millerresearch.com/event/2021-idaho-association-of-plant-protection/
Psyllid Update August 19, 2021
Potato All Locations
potato psyllid
Posted on: August 19, 2021 by Erik Wenninger
This week we had traps deployed in all 73 fields, though we are still waiting for traps from one field. We found a total of 115 psyllids across 25 (35%) fields.
Overall psyllid captures were slightly lower than last week. Contour maps (see links below) still graphically reflect relatively high abundance of psyllids collected in some fields in the western Treasure Valley. The Elmore County “hot spot” is slightly diminished. Moderate to low captures were recorded in the Magic Valley. We captured two psyllids in Cassia County, but recorded no psyllid captures further east.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (7 fields), Payette (1 field), Gem (1 field), Owyhee (2 fields), Elmore (2 fields), Gooding (1 field), Jerome (2 fields), Twin Falls (7 fields), Cassia (2 fields), and Power (1 field).
Once again, all psyllids tested from last week were negative for Lso, though tests of psyllids from six fields in the western Treasure Valley that arrived late to us last week are still pending. We have yet to find any Lso-positive psyllids this season.
Nevertheless, we urge growers to watch psyllid numbers closely during the coming weeks and to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--To view contour maps in more detail, set up a free account here: https://potatoes.decisionaid.systems/
UI Ag Talk Tuesday August 17 11:00 AM- last one for 2021
All Crops All Locations
General announcment
Posted on: August 16, 2021 by Kasia Duellman, Pam Hutchinson, Juliet Marshall
The final University of Idaho Ag Talk Tuesday session is Tuesday, August 17 at 11 AM (MT).
Join and listen to or actively participate in round table crop updates, followed by featured topics.
The Featured topics and presenters for the 8/17 session are:
Seed potato germplasm update — Jenny Durrin, Director, Seed Potato Germplasm Program
Fungicide resistance management and fungicide resistance in Fusarium species — Kasia Duellman, Christy Christian
Registration is required. Please visit our website for more information and to register: www.uidaho.edu/ag-talk
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
2021 Miller Research Potato Pest Management Field Day this Thursday
All Crops All Locations
Posted on: August 16, 2021 by Jeff Miller
The Miller Research Potato Pest Management Field Day will be on Thursday, August 19 from 10:00 am to 12:00 noon. Details can be found at the link below. Two ISDA and two CCA credits are available.
» https://millerresearch.com/event/2021-miller-research-potato-pest-management-field-day/
Psyllid Update August 12, 2021
Potato All Locations
potato psyllid
Posted on: August 12, 2021 by Erik Wenninger
This week we had traps deployed in all 73 fields. However, we are still waiting to receive traps from 8 fields in the Treasure Valley (mostly in Canyon County). Of the 65 fields included in this update, we found a total of 93 psyllids across 19 (29%) fields. Updated data from the 8 missing fields will be added to our sites as soon as possible; almost certainly the overall psyllid tally for the week and especially for Canyon County will tick up a bit.
Overall psyllid captures were similar to last week. Contour maps (see links below) still graphically reflect relatively high abundance of psyllids collected in some fields in Elmore County (though slightly lower than in recent weeks) and the western Treasure Valley, but a small “hot spot” is also developing near Twin Falls. Otherwise, modest captures were recorded elsewhere in the Magic Valley, and we continue to see very few psyllids in the Upper Snake region.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (2 fields), Owyhee (3 fields), Elmore (2 fields), Gooding (1 field), Jerome (2 fields), Twin Falls (7 fields), Cassia (1 field), and Power (1 field).
Once again, all psyllids tested from last week were negative for Lso. We have yet to find any Lso-positive psyllids this season.
Nevertheless, we urge growers to watch psyllid numbers closely during the coming weeks and to have their IPM programs in place.
Contour maps or “heat maps” are included on the UI website (see link below). These maps describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed in collaboration with colleagues at Washington State University from our many years of data on psyllids in Idaho. We include just a screenshot of the contour maps on our site, so we encourage stakeholders to visit the Decision Aid Systems site and create a free account to view each week’s maps and other pest data in more detail: https://potatoes.decisionaid.systems/
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid Update August 5, 2021
Potato All Locations
potato psyllid
Posted on: August 5, 2021 by Erik Wenninger
This week we had traps deployed in all 73 fields monitored this year. We found a total of 94 psyllids across 30 (42%) of the 73 fields.
Overall psyllid captures declined again from last week. Contour maps (see links below) still graphically reflect relatively high abundance of psyllids collected in some fields in Elmore County and the western Treasure Valley, but at least in the Treasure Valley tend to show more moderate incidence of psyllids than last week. Modest captures were recorded in the Magic Valley, and we continue to see very few psyllids in the Upper Snake region.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (9 fields), Owyhee (3 fields), Elmore (2 fields), Gem (1 field), Gooding (2 fields), Jerome (4 fields), Twin Falls (6 fields), Cassia (1 field), Minidoka (1 field), and Bingham (1 field).
All of the psyllids tested from last week and all previous weeks have been negative for Lso.
Nevertheless, we urge growers to watch psyllid numbers closely during the coming weeks and to have their IPM programs in place.
Contour maps or “heat maps” are included on the UI website (see link below). These maps describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed in collaboration with colleagues at Washington State University from our many years of data on psyllids in Idaho. We include just a screenshot of the contour maps on our site, so we encourage stakeholders to visit the Decision Aid Systems site and create a free account to view each week’s maps and other pest data in more detail: https://potatoes.decisionaid.systems/
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
UI Ag Talk Tuesday August 3 11:00 AM (MT)
All Crops All Locations
General announcment
Posted on: August 3, 2021 by Kasia Duellman
The next University of Idaho Ag Talk Tuesday session is Tuesday, August 3 at 11 AM (MT).
Join and listen to or actively participate in round table crop updates, followed by featured topics.
The Featured topics and presenters for the 8/3 session are:
Teff: benefits, production practices, and current market situation — Ms Ritika Lamichhane, MS student (advised by Olga Walsh, Extension Cropping Systems Agronomy)
Potato cropping systems trials at Aberdeen R&E Center - Pam Hutchinson (Extension Specialist — Potato Cropping Systems Weed Scientist
Selected research projects aimed at managing tuber-borne diseases - Kasia Duellman, seed potato specialist
Registration is required. Please visit our website for more information and to register: www.uidaho.edu/ag-talk
Psyllid Update July 29, 2021
Potato All Locations
Potato Psyllid
Posted on: July 29, 2021 by Lucy Standley
This week we
had traps deployed in all 73 fields monitored this year. We found a total of 126
psyllids across 36 (49%) of the 73 fields.
Psyllids were
collected on sticky traps in potato in the following counties: Canyon (11
fields), Owyhee (2 fields), Elmore (2 fields), Payette (1 field), Gem (1
field), Gooding (2 fields), Jerome (4 fields), Twin Falls (6 fields), Cassia (2
fields), Minidoka (3 field), and Power (2 fields).
Psyllid
captures overall declined a bit from last week. Contour maps (see links below)
still graphically reflect relatively high abundance of psyllids collected in
some fields in the western Treasure Valley and Elmore County, but both areas
show more moderate incidence of psyllids than last week. Moderate captures were
recorded in the Magic Valley, and we continue to see very few psyllids in the
Upper Snake region.
All of the
psyllids tested from previous weeks have been negative for Lso. Samples tested
from last week so far show no evidence of Lso; however, we only have results
from one of the two primers used to test for Lso. Results from the first primer
were all negative, which was sufficient to confirm a negative result in almost all
of our tests during that past ten years. We should have results from the second
primer tomorrow to confirm these results, and we will post another update if
any samples are positive.
We urge growers
to watch psyllid numbers closely during the coming weeks and to have their IPM
programs in place.
Contour maps or
“heat maps” are included on the UI website (see link below). These maps
describe predicted psyllid densities across the landscape, based on our trap
counts and on predictive models developed in collaboration with colleagues at
Washington State University from our many years of data on psyllids in Idaho.
We include just a screenshot of the contour maps on our site, so we encourage
stakeholders to visit the Decision Aid Systems site and create a free account
to view each week’s maps and other pest data in more detail: https://potatoes.decisionaid.systems/
More information
can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the
links under “Updated weekly reports” for details on trap captures.
--Click on the
“Psyllid Management” link on the left panel for information on psyllid and
zebra chip biology and management.
Psyllid Update July 22, 2021
Potato All Locations
Potato Psyllid
Posted on: July 22, 2021 by Lucy Standley
This week we
had traps deployed in all 73 fields monitored this year. We found a total of
191 psyllids across 31 (42%) of the 73 fields.
Psyllids were
collected on sticky traps in potato in the following counties: Canyon (11
fields), Owyhee (3 fields), Elmore (2 fields), Payette (1 field), Gem (1
field), Gooding (1 field), Jerome (3 fields), Twin Falls (7 fields), Minidoka
(1 field), and Power (1 field).
All of the
psyllids tested from previous weeks have been negative for Lso, though we are
waiting for results from 32 psyllids from six fields that arrived to us late.
We continue to have issues with shipping times being slower than in previous
years.
Psyllid
captures overall ticked up slightly from last week. Contour maps (see links
below) graphically reflect the relatively high abundance of psyllids collected
in some fields in the western Treasure Valley during the past three weeks, as
well as a “hot spot” that has been growing each week in Elmore County. A small
area west of Twin Falls showed relatively high captures this week as well. Very
few psyllids have been detected in the Upper Snake region thus far.
We urge growers
to watch psyllid numbers closely during the coming weeks and to have their IPM
programs in place.
Contour maps or
“heat maps” are included on the UI website (see link below). These maps
describe predicted psyllid densities across the landscape, based on our trap
counts and on predictive models developed in collaboration with colleagues at
Washington State University from our many years of data on psyllids in Idaho. We
include just a screenshot of the contour maps on our site, so we encourage
stakeholders to visit the Decision Aid Systems site and create a free account
to view each week’s maps and other pest data in more detail: https://potatoes.decisionaid.systems/
More information
can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the
links under “Updated weekly reports” for details on trap captures.
--Click on the
“Psyllid Management” link on the left panel for information on psyllid and
zebra chip biology and management.
2021 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 20, 2021 by Jeff Miller
Miller Research will be holding its annual potato pest
management field day on Thursday, August 19. The event is open to the public
and there is no cost to attend but
please RSVP so we can plan appropriately for the event. This can be
done on our website or by responding to jeff@millerresearch.com or (208)
431-4420. More details can be found by following the attached link.
» https://millerresearch.com/event/2021-miller-research-potato-pest-management-field-day/
UofI Ag Talk Tuesday 2021
All Crops All Locations
General announcment
Posted on: July 19, 2021 by Kasia Duellman
The next Ag Talk Tuesday session is July 20 at 11 AM.
Registration is required (register one time to access all sessions). Click on this link to register: Registration Link
For more information, please visit the Ag Talk Tuesday website:
http://www.uidaho.edu/ag-talk
This week's featured topics and speakers:
- Federal crop insurance 101 — Ben Thiel, Regional Director, USDA-RMA
- Field projects of cropping systems in eastern Idaho — Xi Liang, Associate Professor, Cropping Systems Agronomy
Psyllid Update July 15, 2021
Potato All Locations
potato psyllid
Posted on: July 15, 2021 by Erik Wenninger
This week we
had traps deployed in all 76 fields monitored this year (though we are waiting
to receive traps from 11 sites). We found a total of 76 psyllids across 18 (28%)
of the 65 fields for which we have data. Several of the fields for which we are
waiting for traps are from fields in and near Canyon County in which we found relatively
high numbers of psyllids last week, thus we would expect these figures to tick
up when these data are added.
Psyllids were
collected on sticky traps in potato in the following counties: Canyon (6
fields), Owyhee (2 fields), Elmore (2 fields), Gooding (1 field), Jerome (2
fields), Twin Falls (5 fields), and Bingham (1 field).
All of the
psyllids tested from previous weeks have been negative for Lso, though we are
waiting for results from two individual psyllids from two fields from last week
(the other psyllids tested from those fields were negative).
Psyllid
captures overall are similar to last week. We urge growers to watch psyllid
numbers closely during the coming weeks and to have their IPM programs in place.
Contour maps or
“heat maps” of this week’s and the previous week’s results are included on the
UI website (see link below). These maps describe predicted psyllid densities
across the landscape, based on our trap counts and on predictive models developed
in collaboration with colleagues at Washington State University from our many
years of data on psyllids in Idaho. The maps graphically reflect the relatively
high abundance of psyllids collected in some fields in the western Treasure
Valley during the past two weeks, as well as a “hot spot” in Elmore County.
Abundance of psyllids remains moderate to low in the Magic Valley and very few
psyllids have been detected in the Upper Snake region.
We include just
a screenshot of the contour maps on our site, so we encourage stakeholders to
visit the Decision Aid Systems site and create a free account to view these and
other data in more detail: https://potatoes.decisionaid.systems/
More information
can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the
links under “Updated weekly reports” for details on trap captures.
--Click on the
“Psyllid Management” link on the left panel for information on psyllid and
zebra chip biology and management.
Pesticide Credits for Recertification - August 2021
All Crops All Locations
Posted on: July 13, 2021 by Kimberly Tate
The University of Idaho (UI) Extension Pesticide Safety Education Program is offering online webinars for pesticide recertification credit via Zoom video conferencing.
Tuesday, Aug. 3 at 10 AM MDT – Daniel Sandoval, Idaho State Department of Agriculture (ISDA) Pesticide Training Specialist: New ISDA Pesticide and Chemigation Rules
Tuesday, Aug. 17 at 10 AM MDT – Brad Stokes, UI Extension Educator Elmore County: Toxicity and Non-Target Effects of Pesticides to Idaho Pollinators and Beneficial Insects
Each webinar is $10 per applicator. Completed webinars receive one pesticide credit and great information! Note: Enrollment will close 8 AM (Mountain Time) on the day of the webinar.
How to enroll for the webinar(s):
1. Visit our website: https://www.uidaho.edu/extension/ipm.
2. Be prepared to provide your email and applicator license number.
Note: From cals-ipm@uidaho.edu we will send instructions on how to access Zoom (no camera or account required).
For questions or comments, contact Kimberly Tate, UI Extension at ktate@uidaho.edu or (208) 364-4581.
Upcoming Cereal Field Days - Rupert / Minidoka
Small Grains All Locations
Cereals Field Days
Posted on: July 11, 2021 by Juliet Marshall
Upcoming field day this week - Rupert Minidoka!
9:00 AM
Thursday, July 15th
Starting at Winter trials: intersection of 400 E and 900 N. Spring trials: 2 miles east of winter plots on 600 E, 900 N
Hope to see you there!
Cheers,
Juliet
» https://www.uidaho.edu/extension/cereals/scseidaho
» UI_Extension_2021_Cereals_Field_Days_For_Southern_Eastern_ID2.pdf
Psyllid Update July 8, 2021
Potato All Locations
Potato Psyllid
Posted on: July 8, 2021 by Lucy Standley
This week we
had traps deployed in 73 of the 76 fields (96%) monitored this year and we
found a total of 139 psyllids across 30 (41%) of the 73 fields. We are waiting
to receive cards from 9 more sites.
Psyllids were
collected on sticky traps in potato in the following counties: Payette (1
field), Canyon (12 fields), Gem (1 field), Owyhee (3 fields), Elmore (2
fields), Gooding (1 field), Jerome (2 fields), Twin Falls (5 fields), Minidoka
(2 fields), and Power (1 field).
Lso results are
still pending due to shipping delays, but results will be posted on our site
(below) once results are in.
Thus far,
psyllid captures are tending to be a bit higher than they were at this time the
last two years. We urge growers to watch psyllid numbers closely during the
coming weeks and to have their IPM programs in place.
More information
can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the
links under “Updated weekly reports” for details on trap captures.
--Click on the
“Psyllid Management” link on the left panel for information on psyllid and
zebra chip biology and management.
Powdery Mildew in Sugarbeets - 2021
Sugarbeets All Locations
Powdery Mildew
Posted on: July 2, 2021 by Jerry Neufeld
Powdery mildew has been found by
The Amalgamated Sugar Company LLC Crop Consultants in sugarbeet fields in the Nyssa, OR area near the
Snake River. There are several
fungicides available for use to treat powdery mildew. Depending on the disease
pressure and chemistry used, applications with different chemistries should be
repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy due to fungicide
resistance. Always tankmix with at least 5 lbs of sulfur for resistance
management purposes. Contact your Crop Consultant from The
Amalgamated Sugar Company LLC if you have any
questions.
Click on
the link below for the powdery mildew pages in the PNW Plant Disease Management
Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
2021 Potato psyllid monitoring program in Idaho
Potato All Locations
potato psyllid
Posted on: July 2, 2021 by Erik Wenninger
The University
of Idaho and our crop consultant collaborators across the state are once again monitoring
for potato psyllids, zebra chip disease (ZC), and liberibacter (Lso), the
bacterium associated with ZC. The monitoring program covers commercial potato
fields throughout southern Idaho and is funded in part by the Idaho Potato
Commission and generous in-kind contributions by our cooperators.
Our official monitoring
season began with wide deployment of traps this week and will continue for 10
to 12 weeks. We should have about 76 fields across the state this year, using 4
sticky traps per field at all sites.
In early to mid-June
we began monitoring in three fields at the Kimberly R&E Center (KREC) and in
eight commercial fields in the Treasure Valley (mostly in Canyon County). On
traps retrieved during the weeks of June 14, 21, and 28, we captured a total of
1, 4, and 8 potato psyllids, respectively, among our fields at KREC. Among seven
of the eight fields in the Treasure Valley, we captured an average of about 2
psyllids per field during each of the last two weeks; however, in one Canyon
County field, we captured 19 psyllids this week.
All psyllids
tested so far from the previous weeks have been negative for Lso. We expect to
have more Lso results next week.
More details and
additional information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the
links under “Updated weekly reports” on the right for details on trap captures.
--Click on the
“Psyllid Management” link on the left panel for information on psyllid and
zebra chip biology and management.
INSECT PHOTOS NEEDED
All Crops All Locations
Posted on: July 2, 2021 by Jerry Neufeld
As a
component of a USDA-funded project, Harnessing
artificial intelligence for implementing integrated pest management in
small-grain production systems, the University of Idaho is
developing a system to automatically
identify insects in wheat and other crops based on submitted cellphone images.
To develop this system, we
need your help with collecting a large number of
photographs of pests and beneficial insects observed in cereal cropping systems
(cereals and rotation crops) throughout the region. We will use these photos
(hopefully thousands) to train our computer algorithm to enable the system to
generate the most accurate identifications of unknown samples.
To help
us develop this tool, please upload insect photographs through this link: https://cerealpestaid.net/
CANCELLED! The July 8th Snake River Weed Control Tour
All Crops All Locations
Posted on: June 22, 2021 by Pamela Hutchinson
The 2021 Snake River Weed Control Tour July 8th at the University of Idaho Aberdeen R&E Center has been cancelled. We hope to see you next year!
July 8th UI Snake River Weed Mgt Tour - Aberdeen R&E Center
All Crops All Locations
Posted on: June 15, 2021 by Pamela Hutchinson
2021 UI Snake River Weed Management Tour – Potatoes and Specialty Crops
Aberdeen R&E Center, Thursday July 8th
Registration begins at 8:30 am
Tour 9a to 12:30p
• Herbicide Tank Mixes for Weed Control in Potatoes.
• Chateau – Fierce – Mauler.
• Anthem Flex Tank Mixtures,
• Sonalan Tank Mixtures for Weed Control in Potatoes.
• Potato Variety Tolerance to Sulfentrazone.
• Potato Variety Tolerance Trials.
• Excess Rainfall Effect on Herbicides and Potato injury.
• Quinoa herbicide screening.
• Litchi tomato herbicide management.
• Herbicide Mechanism of Action Demonstration Plots.
Pest Management Updates and Information:
• Albert Adjesiwor, Weed Scientist, Kimberly R&E Center
Three Idaho Pesticide Applicator Credits will be offered.
For more information contact Pamela J.S. Hutchinson phutch@uidaho.edu 208-681-1304
UI Ag Talk Tuesday June 15, 11AM
All Crops All Locations
General announcment
Posted on: June 15, 2021 by Kasia Duellman
The next Ag Talk Tuesday session is tomorrow, June 15 at 11 AM (MDT).
Registration is required. Register by clicking this link: https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
Or, visit our website for more information: https://www.uidaho.edu/extension/news/ag-talk-tuesday
The live session will begin with a roundtable crop update - listen, contribute, discuss current season crop issues. Crop updates are followed by featured presentations by guest speakers.
June 15 featured presentations:
— PVP and Title V and the implications and impacts for producers — Jeremy Tamsen, Director, Office of Technology Transfer
- If you have questions related to what PVP and Title V mean to saving and selling seed, then please join us for Jeremy Tamsen’s presentation and discussion!
— Post-emergence herbicides for broadleaf and grass control in potatoes — Pam Hutchinson, UI Associate Professor & Extension Specialist (Potato Cropping Systems Weed Scientist)
» https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
UI Ag Talk Tuesday June 1 at 11:00 AM
All Crops All Locations
Posted on: May 31, 2021 by Kasia Duellman
Please Join us for the next Ag Talk Tuesday, June 1 at 11 AM.
These online, live sessions are held every first and third Tuesday of May, June, July and August and they begin with a round table of crop updates followed by Guest Speakers presenting Featured Topics. This week's session's Featured Topics are:
Farm stress management — Lance Ellis, Lance Hansen
Post-emergence herbicides for broadleaf and grass control in potatoes — Pam Hutchinson
If you haven't already registered,
Register here: https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
More information is available online at https://www.uidaho.edu/extension/news/ag-talk-tuesday
We hope to see you there!
Sincerely,
Your Ag Talk Tuesday Organizers:
Kasia Duellman (kduellman@uidaho.edu)
Pamela J.S. Hutchinson (phutch@uidaho.edu)
Juliet Marshall (jmarshall@uidaho.edu)
EPA has extended the delay for respirator fit testing until September 30, 2021.
All Crops All Locations
Posted on: May 21, 2021 by Jerry Neufeld
Due to
the COVID19 pandemic, and concerns about obtaining respirators and annual fit
testing as required by the WPS, EPA has provided guidance for delaying the
annual fit testing. This delay will be effective until September 30,
2021. EPA expects employers and handlers to make every effort to
comply with all pesticide label and Agricultural WPS requirements.
If all
options to find new respirators and get handlers fit tested, are exhausted,
EPA's guidance provides the following additional options:
- Reuse and extend use of disposable N95 filter facepiece
respirators, - Use of "expired" respirators,
- Use of respirators certified in certain other countries
or jurisdictions meeting protective conditions outlined, - Delay the annual respirator "fit
test".
Potential
risk to handlers can be minimized if the handlers and the employers comply with
all other requirements of the WPS and pesticide labels if:
- Handlers have received an annual fit test during
calendar year 2019 or 2020 and continue to use that specific respirator
make and model, - Handlers have not had a physiological change that
affects the seal (e.g. 20lb. weight loss or gain, facial surgery, scarring
since last fit test), - Handler employer can demonstrate that the handler
received respirator training in the previous 12 months.
THIS
AMENDMENT TO THE WPS EXPIRES SEPTEMBER 30, 2021.
Click
on the line below for more information from the EPA.
Sugarbeet Root Maggot - 2021
Sugarbeets All Locations
sugarbeet root maggot
Posted on: May 19, 2021 by Jerry Neufeld
The growing degree day calculator (gdd) (hosted by the
Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us)
for the sugarbeet root maggot fly shows that—depending on your location in the
Treasure Valley— the peak flight of root maggot flies began a few days
ago. The gdd model does an excellent job
of predicting peak flight, but monitoring with orange sticky stake traps is the
best way to get local information on fly numbers for a given field to determine
if you have the threshold numbers of flies.
Root maggot flies will lay eggs near sugarbeet plants. After
the larvae hatch they will begin feeding on the young sugarbeets. Look for
these pests to appear in the western end of the Treasure Valley first. The optimal timing for applying granular
insecticides against root maggots is within 10 days of peak flight. Granular insecticides must be watered in well
to get good uptake by the sugarbeets. The
Amalgamated Sugar Company field consultants are reporting that root maggot fly pressure
appears to be light at the moment in the Treasure Valley, but there are some
elevated levels of root maggot flies in eastern Idaho . If you suspect you are having issues with these
pests contact your TASCO field consultant.
Click on the links below for control information from the PNW Insect
Control Handbook and the TASCO “Fly Monitoring Readings”.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
Ag Talk Tuesday - May 18 at 11 AM
All Crops All Locations
Ag Talk Tuesday
Posted on: May 14, 2021 by Juliet Marshall
May 18 — Idaho Insect Identification website overview — Brad Stokes, Jason Thomas & Aquifer recharge program — Keith Esplin — Juliet Marshall (host)
| KASIA M. DUELLMAN, Ph.D. Assistant Professor and Extension Seed Potato Specialist College of Agricultural and Life Sciences Entomology, Plant Pathology and Nematology kduellman@uidaho.edu webpages.uidaho.edu/extension-seed-potato/ 208-757-5476 | 701-793-9456 (Cell) U of I Idaho Falls | 1776 Science Center Drive, Suite 205 | Idaho Falls ID 83402 | United States |
Ag Talk Tuesday Resume TOMORROW May 4
All Crops All Locations
Posted on: May 3, 2021 by Kasia Duellman
Ag Talk Tuesday resumes tomorrow May 4, 11AM to 1PM (MDT).
All sessions will be held on the first and third Tuesdays, May through August.
Registration is required. Register here: https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
For more information and a schedule of topics, please visit our website: https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://www.uidaho.edu/extension/news/ag-talk-tuesday
» https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
Ag Talk Tuesday resumes!
All Crops All Locations
Ag Talk Tuesday
Posted on: April 23, 2021 by Juliet Marshall
Greetings!
We are excited to announce that the University of Idaho Extension's Ag Talk Tuesday sessions will resume May 4 for the 2021 season.
As usual, these sessions will be held on the first and third Tuesdays of May, June, July and August, from 11AM to 1PM (MDT).
You can find a schedule (subject to change) and more information on our website: https://www.uidaho.edu/extension/news/ag-talk-tuesday
Registration is required to attend. You only need to register once to attend all sessions. Once you register, information on how to attend via Zoom or by calling in by phone will be sent to you in a separate email.
To register, click this link (or copy and paste it into your web browser): https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz.
Please join us starting May 4 at 11 AM (MDT) for these online, live, interactive sessions that focus on agriculture - current season issues related to pests, diseases, weeds, diagnostics, soil health, irrigation, agronomy & more along with featured topics and guest speakers.
For questions, please contact one of the organizers: Kasia Duellman (kduellman@uidaho.edu), Pam Hutchinson (phutch@uidaho.edu), or Juliet Marshall (jmarshall@uidaho.edu).
| KASIA M. DUELLMAN, Ph.D. Assistant Professor and Extension Seed Potato Specialist College of Agricultural and Life Sciences Entomology, Plant Pathology and Nematology kduellman@uidaho.edu webpages.uidaho.edu/extension-seed-potato/ 208-757-5476 | 701-793-9456 (Cell) U of I Idaho Falls | 1776 Science Center Drive, Suite 205 | Idaho Falls ID 83402 | United States |
» https://uidaho.zoom.us/meeting/register/tZ0pd-ugrzktHdEEbqB3aHk3rlJLgCeSkCLz
Educational Video-Monitor Flying Insects to Improve Management
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Posted on: March 3, 2021 by Jason Thomas
Do you know what types of insects are entering your field and garden at different times of the year? Would you like more information to help you decide when to implement pest control actions? The University of Idaho Extension just recently released this 5 minute video to demonstrate a way to monitor for flying insects entering your crop or garden. Click the link below to watch.
https://youtu.be/9C-V09gDfY8
Monitoring insects entering your field/garden can help you know when to take specific control actions. For example, in seed potato production it is a critical practice to help us monitor when aphids potentially harboring viruses enter a field. The traps do most of the work for you. You just have to check it every so often and maintain it over the growing season. Utilizing traps can be a helpful way to implement integrated pest management into your operation.
For other insect trapping/monitoring ideas the following demonstrational videos may be helpful:
Pit Fall Traps (For walking/ground insects): https://www.youtube.com/watch?v=4k7I4cdKnMI
Collecting Insects with a Wet Shovel (For Small Crop Pests Like Thrips): https://www.youtube.com/watch?v=jC1g8QJDTYk
Jason Thomas
Extension Educator & Entomologist, U of I Extension
85 E Baseline Rd, Rupert, ID 83350
jasont@uidaho.edu
» https://youtu.be/9C-V09gDfY8
Chlorpyrifos Survey
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Posted on: February 21, 2021 by Stuart Reitz
Please help us gather valuable information about chlorpyrifos (Lorsban and related insecticide products).
Restrictions on the use of chlorpyrifos and the complete revocation of its registration are under way. Our team has initiated a cross-commodity collaborative research project to identify viable options as alternatives to chlorpyrifos. Research will be conducted at several locations in Oregon to determine the efficacy of currently registered chemistries and newer products in onion, corn, cherries, grass seed, and clover seed. This survey will provide critical information on the use of chlorpyrifos across all crops and will help us identify issues to improve our research project.
https://oregonstate.qualtrics.com/jfe/form/SV_28ZDP4ZJ282CcES
Survey participants are eligible for a $25 gift card.
If you have questions or comments about the project, please contact Silvia Rondon, Project Leader, OSU Hermiston Agricultural Research and Extension Center, 541-567-8321, silvia.rondon@oregonstate.edu.
Sent on behalf of project team: Silvia Rondon, Stuart Reitz, Navneet Kaur, Daniel Lightle, and Chris Adams.
Thank you for your assistance,
» https://oregonstate.qualtrics.com/jfe/form/SV_28ZDP4ZJ282CcES
Research and Outreach Programming for Pulse Crops
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Posted on: February 9, 2021 by Jerry Neufeld
Montana State University needs your help to improve our research and outreach programing for pulse crops. We’ve created a survey to help us collect information that will directly impact what we research, how we develop our future programming, and also increase our ability to apply for pulse crop research funding.
The survey should take about 10 minutes to complete. You can use your phone, computer, or tablet.
Your responses are completely anonymous – we have no way of connecting people to answers. Also, the data we collect are always aggregated (all answers summarized together), so that individual responses are never seen by anyone but the researchers.
Here’s a link to the survey: https://bit.ly/Pulses2021; you can copy it into your browser.
If you have any questions about the survey or our research, please don’t hesitate to contact Mary Burrows at mburrows@montana.edu or my research associate at monica.brelsford@montana.edu or by phone at (406) 994-5155.
Thank you for helping out research and Extension!
2021 Miller Research Potato Disease Management Seminars
Potato All Locations
Posted on: January 28, 2021 by Jeff Miller
Due to the COVID-19 pandemic, Miller Research will not be holding its annual Potato Pest Management Meeting. Instead, we will be having four 1-hour virtual seminars where we will discuss four different topics related to potato disease management. One CCA (integrated pest management) credit and one ISDA pesticide recertification credit have been awarded for each session. You will be required to answer some participation questions in order to get the ISDA credit. Each session will run from 12:00 noon to 1:00 pm. Registration is free.
Meetings will be held by Zoom and registration is required separately for each session. To register for each session, click on the link. You will be taken to a page where you need to enter your name and email address. After successfully registering, you will receive a confirmation email that contains the link to log into the session.
Pre-License Online Training
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Posted on: January 27, 2021 by Jerry Neufeld
The University of Idaho will be conducting an online Pre-License Training for those people wanting to receive training prior to taking the examinations for a pesticide applicator license. Click on the pdf below for more information.
2021 Virtual Bean School
Dry Beans All Locations
Posted on: January 12, 2021 by Jerry Neufeld
The 2021 Treasure Valley and Magic Valley Bean Schools will be virtual this year. The Bean School will be held January 27 and 28 in the morning. There will be 2 Idaho pesticide licenses credits available. Click on the pdf below for more information.
Idaho and Eastern Oregon Onion Crop Protection Zoom Meeting
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Posted on: January 6, 2021 by Jerry Neufeld
The Idaho and Eastern Oregon Onion Crop Protection Meeting will be on Zoom this year. It will be held Tuesday, February 2nd from 9 am to 12 pm. Click on the pdf below for the link and more information. There will be one Idaho license credit.
» Idaho_Eastern_Oregon_Onion_Crop_Protection_Meeting_agenda.pdf
Virtual Idaho Potato Conference January 19-21, 2021
Potato All Locations
Idaho Potato Conference
Posted on: January 4, 2021 by Nora Olsen
Registration is open! Plan to attend the 53rd annual Idaho Potato Conference January 19-21, 2021. Given the unusual times of a global pandemic, the Idaho Potato Conference shifted from the annual in-person conference held in Pocatello to three days of virtual presentations. The 20-minute pre-recorded presentations with an additional 5 minutes of live Q and A will be given throughout the morning of each day (8 am to noon MT). In addition, 5-minute updates by leading potato industry companies will be included each day.
Spanish Language Session will also be offered virtually for 2021. This session will be held from 1 to 3 pm on January 19th. Topics in Spanish will include reducing bruise, grading potatoes, common storage disease and much more. There will be short videos and live discussions led by University of Idaho extension educators Joseph Sagers and Jason Thomas.
Highlights for this year’s three-day virtual conference include:
• The virtual format allows us to invite many of our colleagues from outside of Idaho. We are pleased to have
o Dr. Paul Bethke from USDA-ARS in Wisconsin to discuss “Tuber lenticels”— what is their function and why do they become enlarged?
o Dr. Andy Robinson from North Dakota University/University of Minnesota – to elaborate on the seasonal topic of “Managing brown center and hollow heart”
o Dr. Ken Frost from Oregon State University will provide a much-needed summary on the “Blackleg/soft rot disease in potatoes”
o Dr. Mark Pavek from Washington State University will provide “Cultural management updates on Clearwater Russet and Alturas” and his graduate student Francisco Gonzalez will provide new (and old) information on “Measuring soil moisture in potato fields”
• The remainder of the 20-minute presentations will focus on a wide variety of topics:
o Changes in potato quality during packing and shipping
o Factors that impact development of bruises
o Analyzing the annual Idaho potato price change during crop transition
o What makes new varieties better than Burbank?
o Susceptibility of russet cultivars to common potato diseases
o Learning to use growth regulators
o Managing early die in potatoes
o Best management practices for pink rot and Pythium leak
o Soil-borne diseases – what causes them and what you can do about it
o Potato Mop Top virus (PMTV) and other viruses
o Diagnosing and predicting foliar diseases in Idaho
o What happened to Zebra Chip in ID?
o Variety reaction to Zebra Chip and interaction with PVY
o Volunteer potato control
o Using plant-pest interactions to build resistance
o What does healthy soil look like in Southern Idaho?
o Sustainability and the potato industry: working together to meet customer and consumer demands
o Idaho Potato Commission update
Idaho Pesticide License Recertification credits (3) will be available on January 20th. Attendees are required by ISDA to pass a short on-line quiz to receive credits.
Registration is free, but you must register in advance—including the Spanish language session. Additional details regarding the agenda, topics, and registration can be found at the conference website www.uidaho.edu/cals/potatoes/news/idaho-potato-conference.
» https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
PNWPestAlert.net surveys
Announcements All Locations
Posted on: December 21, 2020 by Jerry Neufeld
Thanks to everyone that completed a 2020 PestAlert.net survey. Mia, Cody and Tom were randomly selected for the Amazon gift cards. They will be put in the mail today.
2020 Idaho Association of Plant Protection Annual Meeting update
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Posted on: October 28, 2020 by Jeff Miller
With the current situation regarding COVID-19, the Idaho Association of Plant Protection has decided to not hold an in-person meeting in 2020. Instead, we will meet virtually using Zoom. There will be no cost to participate in the meeting.
The program will run from 1:00 PM to 5:00 PM on Wednesday, November 4, and 8:00 AM to 12:00 PM on Thursday, November 5. A total of 7.5 Certified Crop Advisor (CCA) and 7 ISDA Pesticide Recertification credits (ISDA) are available. Participants wishing to get ISDA credits will need to pass an online test as a way to verify attendance.
Information on the agenda and how to register can be found in the attached flier and link.
» https://millerresearch.com/event/2020-idaho-association-of-plant-protection-annual-meeting/
Lso results delayed
Potato All Locations
Potato Psyllid
Posted on: September 17, 2020 by Lucy Standley
Last week’s Lso results are delayed because of the shutdown of main campus buildings due to wildfire smoke. We expect to post the results to our website by the end of next week. Sorry for any inconvenience.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
University of Idaho Pesticide Recertification Webinar Series, Fall 2020
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Posted on: September 15, 2020 by Jerry Neufeld
The University of Idaho Pesticide Recertification trainings will not be the same this fall as they have been in the past years. In many cases, if not all, in person training will not be offered. However, you will still be able to get the credits needed for your license. Click on the pdf below for information on how to get license credits through the University of Idaho Pesticide Recertification Webinar Series.
Fall 2020 ISDA Pesticide Disposal Program
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Posted on: September 15, 2020 by Jerry Neufeld
The Idaho State Department of Agriculture has released their schedule for the fall 2020, Pesticide Disposal Program. Click on the pdf below for all the details.
Final psyllid trap capture report for the 2020 season
Potato All Locations
potato psyllid
Posted on: September 10, 2020 by Erik Wenninger
This week we had traps deployed in 45 of the 65 fields (69%) monitored this year; 20 fields had been vine killed and were not monitored. We found a total of 105 psyllids across 16 (35%) of the 45 fields.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (5 fields), Owyhee (1 field), Elmore (4 fields), Twin Falls (5 fields), and Power (1 field).
From last week’s samples, no psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC).
We are not including “heat maps” this week given that they tend to show skewed patterns with smaller sample sizes.
This week concludes our 2020 psyllid monitoring program, following recommendations from our ZC Advisory Committee of shortening the duration. However, we will report on the last set of Lso results next week.
Total psyllid captures are still down from two weeks ago and based on previous years’ observations we would expect their numbers to continue to reduce; however, psyllids likely will continue dispersing among the remaining fields as vine kill continues. Overall captures of psyllids this season were higher than the last two seasons, though still nowhere near as high as the “epic” years of 2016 and 2012. Thus far, we have also seen our lowest incidence of Lso-positive psyllids yet (0.4%). Together, we expect that the modest psyllid abundance and very low Lso incidence this year should result in relatively low incidence of ZC in harvested tubers. But remember that, at least in our experiments with Russet Burbank, some risk of ZC remains if infection occurs within 1-2 weeks before vine kill.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
September 3, 2020 Psyllid Monitoring Update
Potato All Locations
Potato Psyllid
Posted on: September 3, 2020 by Lucy Standley
This week we had traps deployed in 48 of the 65 fields (73%) monitored this year; 17 fields have been vine killed and will no longer be monitored. We found a total of 92 psyllids across 18 (37%) of the 48 fields.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (7 fields), Owyhee (1 field), Elmore (4 fields), Twin Falls (4 fields), and Power (2 fields).
From last week’s samples, no psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). However, due to shipping delays from last week, a few Lso results will be delayed until next week.
We are not including “heat maps” this week given that they tend to show skewed patterns with smaller sample sizes.
Total psyllid captures were down considerably this week, which was related to fewer fields being monitored but also fewer captures in most of the remaining fields. It appears that we saw peak seasonal captures last week. However, remember that, at least in our experiments with Russet Burbank, some risk of ZC remains if infection occurs within 1-2 weeks before vine kill.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
August 28, 2020 First Lso-positive psyllid found in Canyon County
Potato All Locations
Potato Psyllid
Posted on: August 28, 2020 by Lucy Standley
This week we had traps deployed in 60 of the 65 fields (92%) monitored this year; five fields have been vine killed and will no longer be monitored. We found a total of 199 psyllids across 35 (58%) of the 60 fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (12 fields), Owyhee (2 fields), Gem (1 field), Elmore (5 fields), Gooding (1 field), Jerome (4 fields), Twin Falls (6 fields), and Power (3 field).
From last week’s samples, one psyllid (collected in Canyon County) tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). However, due to shipping delays from last week, a few Lso results will be delayed until next week.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. The heat maps graphically reflect the relatively high abundance of psyllids collected in some fields in Canyon and Twin Falls counties.
Total psyllid captures were the highest we have observed this year, which is not surprising given that captures typically increase toward the end of the season, likely in part due to increase dispersal in relation to senescence and vine kill. We continue to urge growers to maintain their IPM programs. Tubers may still be at high risk of ZC if infection occurs 3 or more weeks before vine kill; in our experiments with Russet Burbank, risk diminishes within 1-2 weeks before vine kill but does not disappear.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
Idaho Association of Plant Protection 2020 Annual Meeting - November 4-5
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Posted on: August 20, 2020 by Jeff Miller
With the current situation regarding COVID-19, the Idaho Association of Plant Protection has decided to not hold an in-person meeting in 2020. Instead, we will meet virtually using Zoom. This is an invitation and call for virtual presentations covering all aspects of plant protection including entomology, nematology, weed science, and plant pathology.
Please consider contributing research results, observations, unusual pest and disease occurrences and topics that could be discussed as a group, etc. to the meeting. We currently envision allotting each presentation a 20-minute time slot, but this may be adjusted based on the number of submissions.
Traditionally the program has gone from 1:00 PM to 5:00 PM on Wednesday and 8:00 AM to 12:00 PM on Thursday. The length of the program will be dictated by the number of submissions. A final program will be advertised in October. Participation in the meeting will be free. We will attempt to certify the meeting for Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA).
Please reply by email if you would like to attend, or if you would like to present.
August 20, 2020 Psyllid Monitoring Update
Potato All Locations
Potato Psyllid
Posted on: August 20, 2020 by Lucy Standley
This week we had traps deployed in 62 of the 65 fields (95%) monitored this year; three fields have been vine killed and will no longer be monitored. We found a total of 124 psyllids across 26 (41%) of the 62 fields. Of the 124 psyllids captured, 59 (47%) were found across 3 fields at University of Idaho Kimberly Research Center (KREC).
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (10 fields), Owyhee (1 field), Gem (2 fields), Elmore (5 fields), Jerome (2 fields), Twin Falls (4 fields), and Power (1 field).
From last week’s samples, no psyllids so far have tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). However, due to shipping delays from last week, a few Lso results will be delayed until next week.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. The heat maps graphically reflect the relatively high abundance of psyllids collected in some fields in Twin Falls County.
Total psyllid captures dropped notably relative to last week, though high captures were still observed at KREC. We continue to urge growers to have their IPM programs in place, especially where psyllid numbers have been relatively high. Tubers may still be at high risk of ZC if infection occurs 3 or more weeks before vine kill; in our experiments with Russet Burbank, risk diminishes within 1-2 weeks before vine kill but does not disappear.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
Pesticide Math Training, Online
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Posted on: August 19, 2020 by Kimberly Tate
The UI Extension Pesticide Safety Education Program has produced three educational online training courses available for pesticide applicators, Master Gardeners, and homeowners. The Calculate Pesticides series includes real-world pesticide calculations in the following courses:
1) General Math – review basic math concepts needed for calculating pesticides.
2) Using Sprayers – develop math skills for calibrating yourself to application equipment.
3) Application Rates – identify the math formulas necessary to calculate pesticide application rates.
Simply, create your account at the National eXtension website by using this address https://campus.extension.org/course/view.php?id=1588 (also linked below). Each user must have their own identification name and password. Once you confirm your free account, you will have unlimited access to these online educational materials. If you have any questions, please contact Kimberly Tate at ktate@uidaho.edu.
Aug 18 - Ag Talk Tuesday - Last one for 2020!
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Ag Talk Tuesday - ATT - last one of the season!
Posted on: August 17, 2020 by Kasia Duellman, Juliet Marshall, Pam Hutchinson
August 18 - 11:00 AM Mountain, Please join us for the final Ag Talk Tuesday of the 2020 growing season! We will provide crop updates followed by two guest speakers:
Jason Thomas will discuss Starling Management on Dairies. Linda Schott will discuss Soil Health Assessment.
Information in regards to registration are available at:
https://webpages.uidaho.edu/extension-seed-potato/ATT.html
The Zoom meeting ID for those who have already registered is: Meeting ID: 349 427 773
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
University of Idaho Small Grains Extension Variety Trial Results Are Available
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Posted on: August 13, 2020 by Juliet Marshall
https://cropalerts.org/news/
It's harvest time for small grains!
The Preliminary Extension Variety Trial Results will be posted to https://cropalerts.org/news/ as they become available. If you wish to receive announcements via email, please email me at jmarshall@uidaho.edu
Currently, Kimberly Winter Wheat, Rupert Spring wheat and Rupert spring barley results are posted.
Also, if you haven't gotten a chance to view the Southeastern Idaho Cereal Variety VIRTUAL Field Day, the presentations are also available at both Crop Alerts and my cereals homepage.
August 13, 2020 Psyllid Monitoring Update
Potato All Locations
Potato Psyllid
Posted on: August 13, 2020 by Lucy Standley
This week we had traps deployed in 64 of the 65 fields (98%) monitored this year; one field has been vine killed and will no longer be monitored. We found a total of 181 psyllids across 25 (39%) of the 64 fields. Of the 181 psyllids captured, 115 psyllids (63%) were found across 3 fields at University of Idaho Kimberly Research Center (KREC). Because this is an unusually high number of psyllids, we will only be testing a subset for Lso at this time.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (8 fields), Owyhee (1 field), Gem (1 field), Elmore (2 fields), Gooding (1 field), Jerome (1 field), Twin Falls (8 fields), and Power (2 fields).
From last week’s samples, no psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC).
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. The heat maps graphically reflect the relatively high abundance of psyllids collected in some fields in Twin Falls County.
Total psyllid captures were higher this week; however, captures for most fields were lower, and this increase can be attributed to surprisingly high captures at KREC. Captures were relatively high in a few other Magic Valley fields, though not to the extent observed at KREC. The reason for this is not clear. We continue to urge growers to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
On-line resources to help minimize potato bruise at harvest
Potato All Locations
Posted on: August 10, 2020 by Nora Olsen
Potato harvest is upon us in Idaho and new on-line resources are available at the University of Idaho to help in bruise and quality management. Written and video resources can be found at www.uidaho.edu/cals/potatoes/bruise-management.
A new bulletin on ‘Monitoring tools for a potato bruise prevention program’ is now posted. This bulletin highlights tools or methods to quickly identify where in harvest and handling operation potatoes may experience physical impacts that cause blackspot and shatter bruises. The bulletin outlines a relatively simple and quick way to detect shatter bruises with the use of an iodine solution. The coloration of the shatter bruises makes it easy to determine the number and severity of the bruises. Although blackspots bruises take time to develop, recent research on Russet Burbank, Ranger Russet and Russet Norkotah indicates the ability to see a majority of the bruises within 3-5 hours after harvest. Peeling potatoes to identify early blackspot bruise symptoms is a useful monitoring tool that can help pinpoint equipment that needs to be adjusted. Another option is to run an instrumented sphere though your operation to measure the acceleration of an impact. The shape and size of the instrumented sphere mimics a potato, making it very useful tool to help identify handling equipment that may be at higher risk for bruising. Monitoring shatter and blackspot bruise levels during harvest and handling operations with the tools outlined in this bulletin provides opportunities to modify equipment and conditions; and also to identify lots or fields that have a greater degree of bruise. Training videos are also available on the website. These 3-minutes videos highlight how to run and operate equipment associated with harvest and handling of potatoes in order to prevent bruising and maximize crop quality. Available videos include:
- Windrower operation (English and Spanish)
- Harvester operation (English and Spanish)
- Moving potatoes from truck to piler (English)
- Best practices for piling potatoes (English and Spanish)
- Unloading potatoes out of storage (English)
Psyllid Update August 6, 2020
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Potato Psyllid
Posted on: August 6, 2020 by Lucy Standley
This week we had traps deployed in 64 of the 65 fields (98%) monitored this year; one field has been vine killed and will no longer be monitored. We found a total of 132 psyllids across 31 (48%) of the 64 fields, though we are still waiting for traps from one site in Canyon county.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (9 fields), Owyhee (2 field), Gem (2 fields), Elmore (4 fields), Jerome (2 fields), Twin Falls (10 fields), and Oneida (1 field).
From last week’s samples, no psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). We are waiting on results for 2 psyllids (1 each from Gem and Minidoka counties), which we should have next week.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. The heat maps graphically reflect the relatively high abundance of psyllids collected in some fields in the Treasure Valley and around Twin Falls.
Psyllid captures were slightly higher this week, though similar to total captures during early August last year. We continue to urge growers to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
Welcome Albert Adjesiwor, Ph.D. as U of I new Weed Scientist
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Posted on: August 4, 2020 by Nora Olsen
The University of Idaho welcomes Albert Adjesiwor, Ph.D. as our new Weed Scientist located at the Kimberly Research and Extension Center. In his new role, Albert will be studying and disseminating information on best weed management practices in agronomic crops, mainly: sugarbeet, dry beans, corn, and small grains. Currently, Albert’s research and extension program is focused on weed seedhead suppression, identifying weed-suppressive cover crops and optimal seeding and termination timing, and assessing the use of integrated weed management approaches to reduce the selection of herbicide-resistant weeds.
Please reach out to Albert with any weed questions or issues in your crops. In addition, Albert is looking for sugar beet fields where there are weed escapes to estimate seed production and screen for resistance. Please contact Albert if you have weeds in your sugar beet fields. His contact is aadjesiwor@uidaho.edu and 208-423-6616.
UI Ag Talk Tuesday August 4 11:00 AM to 1:00 PM (MT)
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General announcment
Posted on: July 31, 2020 by Kasia Duellman
Join us this Tuesday August 4 at 11:00 AM (MT)) for our next Ag Talk Tuesday session. Current updates on crop pests and diseases are provided by UofI and industry participants, folllowed by one or two featured topics. For the next session, Ben Eborn will present on Markets and Lide Chen will talk about her work regarding manure, compost, and nutrients. See https://webpages.uidaho.edu/extension-seed-potato/ATT.html for more information.
Registration is required.
If you have not yet registered for the 2020 Ag Talk Tuesday sessions, register here: https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
» https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
Another Lso-positive psyllid
Potato All Locations
Potato Psyllid
Posted on: July 30, 2020 by Lucy Standley
This week we had traps deployed in 65 of the 65 fields (100%) monitored this year; we found a total of 114 psyllids across 28 (43%) of the 65 fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (10 fields), Owyhee (1 field), Gem (2 fields), Elmore (2 fields), Gooding (1 field), Jerome (2 fields), Twin Falls (7 fields), Minidoka (1 fields), and Power (1 field).
From last week’s samples, one psyllid (collected in Twin Falls County) tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). This is the second observation of an Lso-positive psyllid in our monitoring program in as many weeks. Overall incidence of Lso still remains relatively low (about 1% through last week).
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. The heat maps graphically reflect the relatively high abundance of psyllids collected in the Western Treasure Valley.
Psyllid captures were higher this week, though similar to total captures during late July to early August last year. Given this increase and the additional observation of an Lso-positive psyllid, we continue to urge growers to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
First Lso-positive psyllids in 2020 Idaho monitoring
Potato All Locations
Potato Psyllid
Posted on: July 23, 2020 by Lucy Standley
This week we had traps deployed in 59 of the 65 fields (91%) monitored this year (though we have not yet received traps from 6 of these fields); we found a total of 83 psyllids across 28 (53%) of the 53 fields with data.
Psyllids were collected on sticky traps in potato in the following counties: Canyon (12 fields), Owyhee (2 fields), Gem (2 fields), Elmore (3 fields), Jerome (1 field), Twin Falls (7 fields), Minidoka (2 fields), and Oneida (1 field).
From last week’s samples, two psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). These hot psyllids were collected from two different fields: one in Twin Falls and one in Jerome County. This is the first observation of Lso-positive psyllids in our monitoring program this year. This is about one week and two weeks later than the first observation of Lso-positive psyllids during 2019 and 2018, respectively.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
Psyllid captures were a bit higher this week, though similar to total captures during late July to early August last year. Given this increase and the first observation this year of Lso-positive psyllids in Idaho, we urge growers to have their IPM programs in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
» http://www.uidaho.edu/cals/potatoes/news
UI Ag Talk Tuesday July 21 at 11:00 AM
All Crops All Locations
General announcment
Posted on: July 20, 2020 by Kasia Duellman
Join us for the next Ag Talk Tuesday, July 21 at 11:00 Am.
Crop updates will be given by willing participants, followed by our featured topic presented by Dean Michael Parrella (University of Idaho - Collage of Agriculture and Life Sciences).
Pre-Registration is required. To register, click the link below:
Register here: https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
(You only need to register one time to attend all 2020 sessions.)
More information can be found here:
https://webpages.uidaho.edu/extension-seed-potato/ATT.html
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
2020 Virtual Potato Association of American Annual Meeting - July 20-22
Potato All Locations
Posted on: July 17, 2020 by Jeff Miller
Due to COVID-19, the Potato Association of America is holding its 2020 annual meeting online. This provides an excellent opportunity for more people to watch the presentations who have not been able to do so in the past.
The Virtual Annual Meeting will take place the afternoons of Monday, July 20th - Wednesday, July 22nd.
You are invited to join us online for educational sessions, poster presentations, and a LIVE Graduate Student Competition, all from the safety and comfort of your own home or office.
Registration is now available online! Limited spots available.
Delegates - $50 registration fee.
Program details and registration can be found at https://amr.swoogo.com/paa2020
As you browse the schedule of events, please note that all times listed are in Eastern Daylight Time (EDT)!
Psyllid Update July 16, 2020
Potato All Locations
Potato Psyllid
Posted on: July 16, 2020 by Lucy Standley
This week we had traps deployed in 56 of the 65 fields (86%) monitored this year and we found a total of 42 psyllids across 22 (39%) of the 56 fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (4 fields), Gem (2 fields), Elmore (1 field), Jerome (2 fields), Twin Falls (9 fields), Cassia (1 field), Power (1 field), and Oneida (1 field).
The remaining 9 fields (across Bingham and Power counties) had traps deployed in them this week, and we will report data from them next week.
Lso testing of last week’s psyllids has been delayed. We plan to report Lso results next week.
There was also an issue with the generation of “heat maps” that we expect to have resolved by next week.
Psyllid captures were similar to last week and similar to this time last year, though we urge growers to watch psyllid numbers closely during the coming weeks.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid Update July 9, 2020
Potato All Locations
Potato Psyllid
Posted on: July 9, 2020 by Lucy Standley
This week we had traps deployed in 56 of the 65 fields (86%) monitored this year and we found a total of 44 psyllids across 22 (39%) of the 56 fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (6 fields), Gem (2 fields), Elmore (3 fields), Jerome (1 field), Twin Falls (8 fields), and Minidoka (1 field).
From the last two week’s samples, so far 0 psyllids have tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). However, we still have one psyllid from last week (collected from Twin Falls county) with pending Lso results.
We apologize for not having “heat maps” yet this week. We expect to have them generated before next week’s update and posted on our website.
Thus far, psyllid captures are similar to this time last year, though we urge growers to watch psyllid numbers closely during the coming weeks.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
UI Ag Talk Tuesday July 7 11:00 AM to 1:00 PM (MT)
All Crops All Locations
General announcment
Posted on: July 6, 2020 by Kasia Duellman
Join us at the next UI Ag Talk Tuesday session - Tuesday July 7 from 11:00 am to 1:00 pm (MT). Each session includes crop updates, current season crop and disease issues, Featured Topics with guest speakers, questions, and discussion. This week's featured topic is "Field projects of cropping systems of alfalfa, quinoa, barley, and wheat," presented by Dr. Xi Liang.
A one-time Registration is Required to be able to attend the 2020 sessions. Instructions on how to join the sessions are provided once you register.
Register here: https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
Only four 2020 Ag Talk Tuesday sessions remain: July 7, July 21, August 4, and August 18. More information is available at https://webpages.uidaho.edu/extension-seed-potato/.
» https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
2020 Potato psyllid monitoring program in Idaho
Potato All Locations
Potato Psyllid
Posted on: July 2, 2020 by Lucy Standley
The University of Idaho and our crop consultant collaborators across the state are continuing the monitoring program for potato psyllids, zebra chip disease (ZC), and liberibacter (Lso), the bacterium associated with ZC. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission and generous in-kind contributions by our collaborators.
Following guidance from our ZC Advisory Committee, we are running a shortened monitoring season beginning at the end of June and continuing for 10 to 12 weeks, using 4 sticky traps per field at all sites. Complications related to COVID-19 have limited the number of sites being monitored by some of our cooperators, but we expect to still have a total of about 65 fields across the state.
The first set of traps in commercial fields was deployed last week, with quite a few more having been deployed this week. We began monitoring at the Kimberly R&E Center (KREC) during mid-June.
During the week of June 22, we captured a total of 4 potato psyllids among our three monitored fields at KREC. During the week of June 29, we captured 11 psyllids across the same fields as well as 7 psyllids across three commercial fields in Canyon county. Psyllid abundance appears to be fairly low as is typical of June, but we will obtain trap data from many more sites next week.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Iris yellow spot virus in onion
All Crops All Locations
Posted on: July 1, 2020 by Stuart Reitz
Iris yellow spot virus had been found this past week in a few plants in commercial onion fields in Malheur County, Canyon County, and Washington County. So far, no widespread outbreaks have occurred.
Maintaining good thrips management will help limit the spread and severity of the disease. Infective adult thrips spread the virus from plant to plant as well as within a plant. Infective immatures also can spread the virus within a plant.
In addition to thrips management, minimize stress on onion plants by making sure fields are maintained at an adequate but not excessive fertility level, and that the soil moisture is kept at about the 20 centibar level. This will help reduce the severity of virus symptoms.
TASCO Field Days
Sugarbeets All Locations
Posted on: July 1, 2020 by Jerry Neufeld
The following announcement is from The Amalgamated Sugar Company.
Due to the raising rate of Covid community transmission, we see ourselves forced to cancel The Amalgamated Sugar Company Field Days in Nampa (July 7th) and Jerome (July 9th).
We apologize for the short notice and ask for your understanding.
Virtual Tour July 7th: UI Snake River Weed Mgt Tour - Aberdeen Research and Extension Center
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Posted on: June 29, 2020 by Pamela Hutchinson
Can not make it to the on-site Tour June 30th?
You are in luck!
You are invited to a virtual tour of the UI Snake River Weed Mgt trials: Aberdeen Research and Extension Center via Zoom meeting.
When: Jul 7, 2020 01:00 to 4 PM Mountain Time (US and Canada)
Even if you saw the trials up close and personal June 30 you can also register for this virtual tour.
NOTE: Three Pesticide Recertification credits will be offered for virtual tour attendees.
Register in advance for this meeting:
https://uidaho.zoom.us/meeting/register/tJYpdumtrjgpEtE7UlRaMInXN--XVoQ50nrN
After registering, you will receive a confirmation email containing information about joining the meeting.
Pam
Pamela J.S. Hutchinson
Potato Cropping Systems Weed Scientist
Aberdeen R&amp;E Center
1693 S 2700 W
Aberdeen, ID 83210
Cell ph 208-681-1304
Office ph 397-4181 fax 397-4311
» https://uidaho.zoom.us/meeting/register/tJYpdumtrjgpEtE7UlRaMInXN--XVoQ50nrN
Additional resources for potato quality improvement are now available on-line
Potato All Locations
Posted on: June 29, 2020 by Nora Olsen and Mike Thornton
As part of the Idaho Potato Commission-funded quality project we have been working with one of the largest retailers of potatoes to monitor the incidence of defects seen at the consumer level in the 2017, 2018 and 2019 potato crops. The good news is that we have seen an improvement in the quality of potatoes delivered over the three years of the project. We believe that this improvement in quality is due in large part to the emphasis on reducing bruise damage being exhibited at both the grower and shipper levels.
One of the best ways to reduce bruise damage is to focus on training the people that operate every piece of potato handling equipment on their role in the effort to improve quality. To that end, we have developed several training resources on our website under the “Bruise Management” tab. In 2019 we focused on videos that show windrower and harvester operators the key factors in operating that equipment in a way that minimizes bruise. But we realize that bruising can take place any time potatoes are handled, so in 2020 we focused on the equipment that moves potatoes from the truck into storage, the piling operation, and the process of removing the potatoes from storage. The result is three new videos entitled Moving Potatoes from Truck to Piler, Best Practices for Piling Potatoes, and Unloading Potatoes Out of Storage. Each video is only 3 to 4 minutes long, but cover the basic operating principles and show several viewpoints so that equipment operators can see what the machinery should look like when operating properly.
Special thanks go to Jason Thomas (Minidoka County Extension Educator) for the narration, and Bill Schaefer for shooting the video and editing it all into the final product.
The initial videos are available in English. However, we anticipate that a Spanish version of the videos will be posted shortly. All these videos are available at the following website:
https://www.uidaho.edu/cals/potatoes/bruise-management/training-videos
Powdery Mildew in Sugarbeets - 2020
Sugarbeets All Locations
Powdery Mildew
Posted on: June 23, 2020 by Jerry Neufeld
Powdery mildew has been found by The Amalgamated Sugar Company LLC Crop Consultants in sugarbeet fields in the Nyssa, OR and Parma, ID area. This is quite a bit earlier than the past few years. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy to due fungicide resistance. Always tankmix with at least 5 lbs of sulfur for resistance management purposes. Contact your Crop Consultant from The Amalgamated Sugar Company LLC if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
2020 UI Snake River Pest Management Tour - Aberdeen
Announcements All Locations
Posted on: June 19, 2020 by Pamela Hutchinson
Hello!
We will definitely have our annual Snake River Pest Management Tour at the Aberdeen R&E Center Tuesday June 30th!
Time:
· Registration 8:30 to 9a
· Tour 9a to noon
Safety precautions:
· Forehead temperatures will be taken at registration..
· Face masks are required – we will provide if you don’t have one on tour day.
· Hand sanitizer will be available at registration and during the tour.
· Attendees must social distance except for within your family or within a group of members from your own company with whom you have been approved to be closer than 6ft.
· Attendees will drive their own vehicles to field tour stops rather than on trailers. The tour is entirely at the Aberdeen R&E Center.
· No lunch after the tour but bottled water will be provided throughout the morning.
Credits: Three Idaho pesticide applicator recertification credits will be offered.
FOR THOSE WHO CANNOT ATTEND IN PERSON:
We will have a virtual tour of some type – stay tuned for further details.
Featured will be several weed control trials in potatoes, including tank mixtures, planned vs. rescue postemergence applications, chemigation vs sprinkler incorporation as well as potato variety herbicide tolerance trials, and herbicide mechanism of action plots.
And…Updates about other pests and other crops from our Research and Extension project leaders.
Please forward this email to your colleagues.
NO RSVP needed unless you are unable to have a vehicle for the tour stops.
We hope to see you there!
Pam
Pamela J.S. Hutchinson
Potato Cropping Systems Weed Scientist
Aberdeen R&E Center
1693 S 2700 W
Aberdeen, ID 83210
Cell ph 208-681-1304
Office ph 397-4181 fax 397-4311
Cercospora leaf spot in Sugarbeets - 2020
Sugarbeets All Locations
Cercospora leaf spot
Posted on: June 15, 2020 by Jerry Neufeld
Amalgamated Sugar Company, LLC is reporting they have the first confirmed sighting of Cercospora leaf spot for 2020 in a sugarbeet field between Caldwell and Notus. A Senior Agriculturist with AMSCO found symptomatic leaves in an overhead irrigated field. We have reached critical temperatures but relative humidity is still low, however overhead irrigation can artificially increase relative humidity and therefore increase infection potential. Fields in close proximity to last year’s infected fields, or back to back sugarbeet fields are especially at risk. Please contact your local AMSCO agriculturist for fungicide recommendations based on last year’s fungicide resistance survey.
Volunteer potato control recommendations for 2020
Potato All Locations
volunteer potatoes
Posted on: June 10, 2020 by Jerry Neufeld
The pdf below contains "Volunteer potato control recommendations for 2020." This information is provided by Dr. Pamela J.S. Hutchinson, Potato Cropping Systems Weed Scientist, University of Idaho Aberdeen R&E Center.
» Volunteer_potato_control_recommendations_for_2020_HUTCHINSON_June_02_2016.pdf
Stripe rust (or Yellow Rust) in Wheat - Western Idaho
All Crops All Locations
Stripe rust on wheat
Posted on: June 5, 2020 by Juliet Marshall
Stripe rust has found its way to western Idaho, reported from at least two locations (with accompanying picture), one location was on UI Magic CL+. (Thanks Oliver Neher!) The growth stage of winter wheat in that area is past the window of fungicide application, and is currently in grain fill. Spring wheat is still vulnerable and susceptible varieties should be scouted for the appearance of stripe rust.
In the Magic Valley and into eastern Idaho, winter wheat is heading and susceptible varieties are still vulnerable to significant yield loss associated with stripe rust infection. Stripe rust reaction of last year’s varieties in the Extension Variety Trials is reported in the 2019 Small Grains Report available online at https://www.uidaho.edu/extension/cereals/scseidaho. (The data is included here as attachments.). Also keep an eye out for stripe rust on barley. No barley stripe rust has been reported so far this year.
Please note that while some wheat varieties were reported as resistant in 2019, race changes were reported in California by Dr. Mark Lundy (UC Davis pathologist) in this year’s crop; therefore scouting of all varieties is recommended this season. Please report observations so we can keep track of the in-season spread.
The weather forecast for this and especially next week is very conducive to stripe rust spread and infection. Fungicide application recommendations developed through NCERA-184 pathologists, coordinated by Dr. Erick De Wolfe Kansas State University, is also attached.
» https://www.uidaho.edu/extension/cereals/scseidaho
New edition of Potato Production Systems
Potato All Locations
Posted on: June 5, 2020 by Jerry Neufeld
Dr. Mike Thornton, Professor of Plant Sciences, University of Idaho Parma Research and Extension Center is reporting that a new edition of Potato Production Systems was published recently by Springer Publishing. The comprehensive book includes contributions by 39 authors, 22 of whom are current or emeritus U of I faculty. The book, originally published by UI Extension in 2003, functions as a textbook for CALS Potato Science course and as a reference for potato industry professionals. You can find more information about the book on the Springer website by clicking on the link below.
EPA Releases Temporary Guidance on Respiratory Protection for Agricultural Pesticide Handlers During COVID-19
All Crops All Locations
Posted on: June 3, 2020 by Christy Tanner
The temporary guidance outlines approaches to address the unavailability of required respiratory protection and respiratory fit testing that should first be exhausted before considering any alternative options. Options include:
• Use alternative NIOSH-approved respirators offering equivalent or greater respiratory protection than those required on the pesticide label;
• Hire commercial applicator services with enough respirators and respiratory protection capabilities;
• Opt to use agricultural pesticide products that do not require respirators; or
• Delay pesticide applications until another compliant option is available.
If the above options are exhausted, EPA’s guidance provides additional options with strict terms, conditions, and exhaustion requirements to minimize potential incremental risks to workers:
• Reuse and extended use of disposable N95 filter facepiece respirator;
• Use of “expired” respirators;
• Use of respirators certified in certain other countries or jurisdictions meeting protective conditions outlined; or
• Delay the annual respirator “fit test.”
This is a temporary policy. EPA will assess the continued need for and scope of this temporary guidance on a regular basis. To read the guidance in full and to learn more about EPA’s Worker Protection Standard, visit this webpage: https://www.epa.gov/enforcement/statement-regarding-respiratory-protection-shortages-and-reduced-availability-respirator
COVID-19 Guidance for Ag Employers and Workers
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Posted on: June 2, 2020 by Stuart Reitz
The CDC and US Department of Labor have released guidance to protect agricultural workers on farms and other work sites. Please take time to review the recommendations to maintain a safe work environment and reduce the spread of COVID-19 in your communities.
https://www.cdc.gov/coronavirus/2019-ncov/community/guidance-agricultural-workers.html
» https://www.cdc.gov/coronavirus/2019-ncov/community/guidance-agricultural-workers.html
Ag Talk Tuesday - June 2
All Crops All Locations
Posted on: June 1, 2020 by Juliet Marshall
Greetings!
This Tuesday (June 2) brings another Ag Talk Tuesday session of the season. These online interactive sessions occur every 1st and 3rd Tuesday of the growing season (May through August) from 11:00 AM to 1:00 PM MT and provide an opportunity for UofI and the ag industry to share and exchange information about current season crop issues. Featured topics are also presented.
After crop updates, the featured topics are "In-season nutrient management with soil and petiole sampling” with Linda Schott and
"Weed and chemical load on compost vs manure” with Mario E. de Haro-Martí.
You must Register in advance for this meeting:
https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
After registering, you will receive a confirmation email containing information about joining the meeting.
If you have already registered, you will not need to register again.
Attached is a flyer for your use to help spread the word.
A schedule with featured topics is available here: https://webpages.uidaho.edu/extension-seed-potato/ATT.html Check back often as items are added regularly.
Sincerely,
Your Ag Talk Tuesday Organizers:
Kasia Duellman
Pamela J.S. Hutchinson
Juliet Marshall
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
Ag Talk Tuesdays - May 19 - Register in Advance to Attend
All Crops All Locations
Posted on: May 16, 2020 by Kasia Duellman, Juliet Marshall, Pam Hutchinson
Hello All:
Please join UI Extension Specialists, Extension Educators and ag professionals for Ag Talk Tuesdays. These sessions occur every first and third Tuesday, May through August. Listen to a featured presentation, hear crop pest and disease updates for the current season, engage with industry professionals, ask questions, provide your crop updates, or sit back and listen on your phone, tablet or laptop with Zoom.
Register in advance for this meeting (required):
https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
Register once to be able to attend all 2020 sessions.
To learn more about Ag Talk Tuesdays and to view a schedule of featured presentations, please check the calendar here (check back often as new topics are added regularly): https://webpages.uidaho.edu/extension-seed-potato/ATT.html
After the sessions, read the Ag Talk Report newsletter - this newsletter provides a summary of Ag Talk Tuesday highlights, plus additional timely information that wasn't covered during the live session. The current issue and past issues can be found here:
https://webpages.uidaho.edu/extension-seed-potato/ATT.html
Please distribute this information far and wide.
Sincerely,
Kasia
--------------------------------------
KASIA M. DUELLMAN, Ph.D.
Assistant Professor and Extension Seed Potato Specialist
College of Agricultural and Life Sciences
Entomology, Plant Pathology and Nematology
kduellman@uidaho.edu
webpages.uidaho.edu/extension-seed-potato/
208-757-5476 | 701-793-9456 (Cell)
U of I Idaho Falls | 1776 Science Center Drive, Suite 205 | Idaho Falls ID 83402 | United States
Ag Talk Tuesday May 5 - Register in Advance
All Crops All Locations
Posted on: May 4, 2020 by Juliet Marshall, Kasia Duellman
To: Producers, fieldmen, agronomists, consultants and others in ag
From: Kasia Duellman, University of Idaho Extension Specialist
Re: 2020 UofI Ag Talk Tuesdays
Greetings!
You are invited to attend the 2020 sessions of Ag Talk Tuesday. Ag Talk Tuesdays for 2020 kick off next Tuesday May 5, from 11:00 AM to 1:00 PM. You can attend by Zoom on your computer or you can call in on your phone. More information on what Ag Talk Tuesdays are and an agenda for each session can be found here: https://webpages.uidaho.edu/extension-seed-potato/ATT.html
Check back often as featured topics are added. Registration is required.
Register in advance to attend: https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
Once your registration is approved, you will receive instructions on how to join the meeting by Zoom or by your phone.
We hope you can fit these sessions in your busy schedule. The more participation we have, the more interesting and relevant these interactive sessions will be. Listen to Featured Topics, ask questions, provide insight from your own experiences as the season progresses and as issues arise, participate in discussion, or just listen in. A follow up newsletter, The Ag Talk Report, will be released after each session to give more info on topics discussed and those not broached.
Wishing you a productive season!
Sincerely,
Kasia
--------------------------------------
KASIA M. DUELLMAN, Ph.D.
Assistant Professor and Extension Seed Potato Specialist
College of Agricultural and Life Sciences
Entomology, Plant Pathology and Nematology
kduellman@uidaho.edu
webpages.uidaho.edu/extension-seed-potato/
208-757-5476 | 701-793-9456 (Cell)
U of I Idaho Falls | 1776 Science Center Drive, Suite 205 | Idaho Falls ID 83402 | United States
Sugarbeet Root Maggot - 2020
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sugarbeet root maggot
Posted on: April 27, 2020 by Jerry Neufeld
The growing degree day calculator (gdd) (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugarbeet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 282 gdd since March 1, 2020 and 177 gdd in the Magic Valley. Peak flight of root maggot flies should occur after 360 accumulated gdd when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be about May 3, in the Magic Valley this will be about May 16. The gdd model does an excellent job of predicting peak flight, but monitoring with orange sticky stake traps is the best way to get local information on fly numbers for a given field to determine if you have the threshold numbers of flies.
Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. The optimal timing for applying granular insecticides against root maggots is within 10 days of peak flight. Granular insecticides must be watered in well to get good uptake by the sugarbeets. The link below from the 2020 PNW Insect Management handbook contains additional information about the sugarbeet root maggot control. I have also attached the links to “ Growing Degree Days (GDD)
Root Maggot Emergence Control” and “Economic Threshold for Sugarbeet Root Maggot Calculator.” These are calculators developed by The Amalgamated Sugar Company.
In addition, I have attached a link to the University of Idaho publication entitled “Sugarbeet Root Maggot; Identification, Biology and Management.” TASCO would like you to visit with your field consultant for treatment options.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
» http://www.srcoop.com/coopEconomicThresholdsCalculator.aspx
» http://www.srcoop.com/coopEconomicThresholdsCalculator.aspx
» https://www.extension.uidaho.edu/publishing/pdf/BUL/BUL942.pdf
Adjusting Cropping Systems Due to Market Impacts from COVID19
All Crops All Locations
Posted on: April 25, 2020 by Juliet Marshall
ADJUSTING CROPPING SYSTEMS AFFECTED BY THE COVID-19
Walsh, O.S., Cropping Systems Agronomist, University of Idaho, Parma R&E Center
Thornton, M., Plant Scientist, University of Idaho, Parma R&E Center
Marshall, J.M., Cereal Cropping Systems Agronomist and Pathologist, Aberdeen R&E Center
Morishita, D., Weed Scientist, University of Idaho, Kimberly R&E Center (retired)
Felix, J., Weed Scientist, Oregon State University, Malheur Experiment Station
and Hatzenbuehler, P.L., Agricultural Economist, University of Idaho, Twin Falls R&E Center
The agricultural sector has begun to struggle with the negative impacts of the COVID-19 pandemic. The economic shocks on Idaho and Oregon agricultural industries have hit dairy, beef onion, and potato producers particularly hard. This is partially driven by the school and restaurant industry closures, where mass quantities of these products are typically utilized. Thus, the impact has been more immediate and direct compared to other commodities.
Following the shelter-in-place orders in Idaho and Oregon, the negative effects of the reduction in food consumption are now coming to light. Most crop producers implement yearly rotations – alternating the annual crops grown on a specific field in a planned pattern in successive crop years. Many Idaho and Oregon growers have been forced to cut their planned potato, barley and onion acreage due to loss of processing contracts for the 2020-21 crop year. With planting under way, many farmers are looking for ways to sustain their productivity.
Adjusting crop rotations may enable producers to stay profitable. Planting different crops such as small grain cereals, beans or corn are some options that may be appropriate for acres initially intended for potatoes and onions. Agricultural practices such as fertilization, herbicide and other pesticide applications already completed last fall and/or this spring are some of the key practices that must be considered. Agricultural inputs that have already been applied could have a significant impact on the alternative crops eventually planted in those fields. Finally, there may be serious implications if the fields are replanted to the same crop as in the previous year. To help growers make more informed planting decisions this spring, the University of Idaho and Oregon State University researchers put the following guidelines in place.
Nutrients/soil fertility
Situation:
• Most onion and potato fields receive relatively low rates of nitrogen fertilizer (less than 100 pounds per acre) prior to planting.
• Both crops traditionally receive high applications of phosphorus and potassium at the time of bedding in the Fall.
Recommendations:
• Take a new soil sample (2 ft depth) now to determine the current levels of nutrients in each field. For soil testing instructions, please refer to Soil Sampling guide.
• If the soil contains more than 150 pounds of nitrogen per acre in 2 ft sample – beans are not recommended (excessive nitrogen in the soil will hinder nodulation in bean roots). If soil nitrogen levels suggest that a bean crop may be successful in a field, levels of phosphorus and potassium must be considered. If the soil contains at least 120 ppm of potassium in the 12 inch-sample – no additional potassium fertilization is required. Furthermore, soils containing more than 30 ppm (12-inch sample, Olson) require no additional phosphorus, even at the highest free lime content. For complete information regarding bean crop nutrient management, please refer to the Southern Idaho Fertilizer Guide: Beans.
• Spring wheat may be a good choice for the fields relatively high in nitrogen. An irrigated soft white spring wheat crop with a yield potential of 120 bushels per acre (typical for southern Idaho) requires a total of 240 pounds of nitrogen per acre. As a rule of thumb, two pounds of available nitrogen per bushel are required for irrigated soft white spring wheat. Hard red and white spring wheat requires additional nitrogen, in the range of 2.5 to 3.0 pounds of nitrogen per bushel with additional nitrogen top-dressed at heading to flowering to meet protein requirements. For detailed information on spring wheat nutrient management, refer to Southern Idaho Fertilizer Guide: Irrigated Spring Wheat. Please note, that high levels of phosphorus (above the 20 ppm in the top 12-inch soil sample) may reduce wheat yields. Although addition of potassium to wheat is not required at more than 75 ppm (12-inch soil sample), higher potassium levels should not cause issues for wheat growth.
• Silage corn may be another good option for fields high in nitrogen. For a silage yield of 40-50 tons per acre, at least 100 pounds of nitrogen in the soil (based on the 2 ft soil sample) are recommended. Higher levels of potassium and phosphorus are not an issue for most corn hybrids. For complete information, please refer to Nutrient Management for Field Corn Silage and Grain. Sileage varieties of wheat, triticale and barley are also available.
Herbicides and other pesticides
Situation:
• Most potato fields should not have received herbicides yet. Many onion fields would have had Dual Magnum applied last Fall and may have gotten an application of a soil residual herbicide (Ex. Prowl or Nortron) this Spring.
• Furthermore, fumigants may have already been applied last Fall or this Spring.
Recommendations:
• Make sure to check the label for all pesticides that have been applied to determine plant back restrictions.
• Fields that have received Dual Magnum are suitable for both beans and corn (forage, grain or sweet) planting. Herbicides such as Dual Magnum and Prowl would eliminate the possibility of planting small grain cereal crops like spring wheat or barley.
• Fumigants should not impact subsequent crops. If fumigants have been applied, there should be no damage to the crops themselves, just the additional expense associated with application.
Additional considerations
• For cereals, expect a reduction in yield associated with soil-borne pathogens. Use certified seed with appropriate seed treatments, and plant to a uniform seed depth of about 1 to 1.5 inches in good moisture to allow rapid emergence. Make sure volunteer grasses (including cereals) are removed two-three weeks prior to planting.
• Regarding farm management, the Farm Bureau has several resources available online to help keep you and your staff stay safe and physically and mentally healthy. Such resources include draft email templates to send to staff to inform them of protocols and procedures that are being and/or will be instituted to ensure the safety and health of all is maintained throughout the growing and harvest seasons (https://www.fb.org/land/impact-covid19-on-ag).
• Ensuring that best practices for crop and commodity storage are maintained may help provide opportunities for sales later in the current crop year or early in the 2020-21 crop year as supply chains are re-established or alternative supply chains emerge.
• For cash flow considerations, USDA ARC/PLC program payments for the 2019-20 crop year are expected to be made in October 2020. PLC payments for producers with base acres in wheat remain likely despite an upward change in the estimated marketing year average (MYA) price 2019-20 in the USDA WASDE report for April 9, 2020 from the March report (from $4.55/bu to $4.60/bu, with a reference price of $5.50/bu). The 2019-20 barley MYA remained unchanged at $4.60, and a PLC payment is still expected due to a reference price of $4.95/bu. The MYA price for corn was revised downward from $3.80/bu to $3.60/bu, so a PLC payment may now also be made for corn (reference price of $3.70/bu).
• Uncertainty remains regarding eligibility, payment rates, and timeline for USDA administered agricultural producer payments under several bills enacted by Congress in response to the COVID-19 pandemic. However, the payments made under the discretion Office of the Secretary of the USDA are likely to be allocated to specialty crops (including potatoes) and other agricultural industries (such as cattle) not covered under Farm Bill Title I (except dairy is expected to be included in both). More details will be provided by the USDA will be forthcoming, but payments may likely occur around October 2020 as is planned with the PLC/ARC programs (https://www.usda.gov/media/press-releases/2020/04/17/usda-announces-coronavirus-food-assistance-program).
» Adjusting_Cropping_Systems_affected_by_the_COVID-_final.pdf
UofI Ag Talk Tuesday Sessions resume May 5
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General announcment
Posted on: April 22, 2020 by Kasia Duellman
The 2020 season of Ag Talk Tuesday sessions will be held the first and third Tuesdays of May, June, July and August during 2020. The first Ag Talk Tuesday session for 2020 kicks off online on May 5 from 11:00 AM to 1:00 PM.
Join University of Idaho personnel and your peers in agriculture to discuss current crop issues and timely topics as the field season progresses. Each session will offer featured topics along with other items determined by YOU and those who attend. Meetings are held 1st and 3rd Tuesdays during May, June, July and August, 11:00 AM to 1:00 PM.
Pre-registration is required for online sessions. To register, click on this link and follow the instructions: https://uidaho.zoom.us/meeting/register/vpAkc-uvqTwpZF4DlEg_ZcN8xYE9ezZSkQ
Once your registration is approved, you will receive an email with instructions on how to attend the 2020 Ag Talk Tuesday sessions.
These sessions are FREE! Click here for more information and check the site frequently for updates: https://www.uidaho.edu/cals/potatoes/news
» https://www.uidaho.edu/cals/potatoes/news
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
Focus on Potato webcasts available at no cost.
Potato All Locations
Posted on: April 21, 2020 by Jeff Miller
Focus on Potato webcasts (as well as all PMN webcasts) are now available for viewing at no cost. These webcasts are a great learning resource.
» https://www.plantmanagementnetwork.org/infocenter/topic/focusonpotato/
University of Idaho diagnostic services during Covid19
All Crops All Locations
Posted on: April 14, 2020 by Juliet Marshall
Parma
Parma is still receiving samples although we are operating with less staff than usual.
Instructions for dropping samples off at Parma:
Please email or phone James Woodhall at (208) 970-9667 (cell) in advance of dropping any samples off.
Please leave in front office at Parma or bench outside lab door.
Do not enter the lab.
Please complete the sample submission form and bring with your sample or email to plantdiagnostics@uidaho.edu (https://www.uidaho.edu/cals/plant-diagnostics/parma)
We will aim to process samples in the usual timely manner.
Idaho Falls
Idaho Falls is still receiving samples although the campus is closed and samples cannot be physically dropped off at the laboratory. Please call to make arrangements.
Instructions for samples at Idaho Falls:
Please call in advance to arrange best way to deliver samples (208) 497-5312. We will either arrange for mailing samples or for an alternative way to receive them.
Some samples may be able to be delivered electronically, either by text (208) 497-5312 or by email plantdiagnostics@uidaho.edu
Please complete the sample submission form and email to plantdiagnostics@uidaho.edu (https://www.uidaho.edu/cals/plant-diagnostics/idaho-falls)
We will aim to process samples in the usual timely manner.
Sample Collection and Shipment For Parma and Idaho Falls:
Plant Samples: Avoid collecting plant tissue that is completely dead or rotten. Collect entire plant by digging plant roots. For foliage, wrap in dry paper towel in sealed plastic bag. For root samples, keep some soil with roots in sealed plastic bag.
Soil Samples: Collect samples in a grid pattern with at least 10 cores per acre is recommended at a depth of 12 inches. Collect cores in a bucket, thoroughly mix by hand or with shovel, and place a 1 lb subsample from the bucket in a labeled ziplock bag. Refrigerate samples if not shipping or delivering immediately.
Shipment: If sending by mail, please send overnight or by 2-day shipping. Make sure samples are labeled and include your name and phone number. Be sure to alert lab personnel, either by phone or email, of samples being mailed.
If you have any questions about sample collection or shipment, please call one of the labs and we can direct you.
Parma Address
29603 U of I Lane
Parma, ID 83660
Phone: 208-970-9667
Idaho Falls Address
1776 Science Center Drive, Suite 205
Idaho Falls, ID 83402
Phone: 208-497-5312
Potato Growers: Be prepared for the updated USDA GAP Audit
All Crops All Locations
Posted on: March 24, 2020 by Nora Olsen
The University of Idaho has updated the previously available Potato GAP Audit Organizational Manual. The UI manual is designed to simplify the collection of information necessary to pass the USDA GAP Audit and is now available for download at https://www.uidaho.edu/cals/potatoes/food-and-farm-safety. Included are helpful hints, adaptable standard operating procedures (SOP), examples of policies, documentation and records to use, employee health and hygiene policies in English and Spanish, description of a mock recall drill, and other resource information.
In September of 2019 the USDA replaced and updated their Good Agricultural Practices (GAP) & Good Handling Practices (GHP) Audit Verification Checklist. The updated UI GAP Audit Organizational Manual incorporated these changes into the newest version and this manual can be used in preparing for the 2020 GAP Audit.
Attached is an article highlighting some of the changes and additional helpful hints to develop a strong food safety plan and to successfully pass the USDA GAP Audit.
Action needed to control onion maggot
All Crops All Locations
Onion Maggot
Posted on: March 23, 2020 by Christy Tanner
Cull and unharvested onions from last fall are sprouting in the field, providing host plants for onion maggot. Malheur County is a control area for onion maggot to protect the onion industry (ORS 603-052-0360). Action is needed to control a potential onion maggot outbreak.
Control onion maggots in last year’s onion fields:
The flies overwinter in the soil as pupae, so treating culls in a wheat field with an insecticide might help knock down that first spring generation (catching emerging adults) and help limit the subsequent generation of maggots. Chlorpyrifos would probably be the most effective option. A liquid formulation at a high gallonage would get it down through the canopy to the soil better than a granular formulation. For spring planted fields, they could probably go with a lower spray volume.
Sprays targeting adults usually are ineffective. They travel in and out of fields and can disperse long distances (1 mile or more). This also means effectiveness of anything targeting culls and volunteers depends on participation.
Protect this year’s onions:
For this season’s onions, the best option is self-protection: that would be to have a spinosad seed treatment on (Farmore FI-500), and *if* your buyers allow it, a chlorpyrifos application as backup, added insurance.
Control volunteer onions:
Reducing hosts for pests can help reduce pest populations so choose spring herbicide programs that will control volunteer onions. Maggots feed on the roots and bulbs, so controlling volunteer onions may complement other practices, but is not a substitute for insecticide treatments.
• Controlling onions in wheat:
o Harmony Extra type product + 0.5 ae/A of 2,4-D LV. If the onion is big add Huskie at 15 oz/A to really burn it back. Use a hot surfactant.
o Growth regulator type herbicide - 2,4-D, dicamba, etc. I’d probably run twin jets and an aggressive surfactant to get good coverage.
o This section in the Pacific Northwest Weed Handbook https://pnwhandbooks.org/weed/problem-weeds/garlic-wild-allium-vineale has recommendations for controlling wild garlic, which I think would work for volunteer onion. They may want to wait for most of the bulbs to sprout before spraying.
• Controlling onions in planted roundup ready sugar beet:
o Tankmixing EPTAM 3.5 pt/a with Roundup 32 floz/a (after 1st true leaves have formed)
o Tankmixing Ro-Neet 0.5 gal/a with Roundup 32 floz/a (apply pre-plant, at planting or immediately post-planting)
o Stinger 0.5 pt/a tankmixed into Roundup 32 floz/a.
o Add AMS and NIS to make the mixture hot for the onions.
For more information:
PNW Pest Management Handbook (https://pnwhandbooks.org/insect/vegetable/vegetable-pests/hosts-pests/onion-onion-maggot-seedcorn-maggot)
Stripe rust upate and forecast for Idaho and PNW
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Stripe rust - Forecast and Update, March 1, 2020, Xianming Chen
Posted on: March 2, 2020 by Juliet Marshall
Quick Summary:
Stripe rust forecast for the PNW is at a severe epidemic level.
Areas in southern and eastern Idaho are not in the same forecast zone; Northern Idaho and the Palouse may not follow the exact same forecast or disease pattern.
It is still important to be aware of varieties that are susceptible - we will post alerts when stripe rust first appears. Please share sitings with us! (jmarshall@uidaho.edu)
Fungicide application with herbicide application is recommended for susceptible varieties.
Please read Dr. Chen’s email below for details.
Stripe Rust Forecast and Update, March 1, 2020
Xianming Chen
Stripe rust is forecasted to be in the severe epidemic level in the eastern Pacific Northwest
Based on the prediction models using the weather data from November 1, 2019 to February 29, 2020, wheat stripe rust is forecasted to be in the severe epidemic level range (40-60% yield loss) in the 2020 growing season. The models predicted highly susceptible varieties to have 44% to 53% with an average of 48% yield loss. This number is higher than the 44% forecasted in January based only on the November-December weather conditions. According to this prediction, susceptible and moderately susceptible commercially grown varieties will likely to have up to 24% yield losses.
Stripe rust was found in eastern Washington and Oregon
On February 26, we were checking wheat fields in Lincoln, Douglas, Grant, Adams, Franklin, Benton, and Walla Walla counties of Washington. Wheat was still dormant in Lincoln and Douglass counties, but has started growing in other counties, especially in Benton and Walla Walla counties. We found one leaf with active stripe rust (Figure 1) in a field in Lincoln County, where we easily found stripe rust in last November. We did not found rust in Douglass County, even in the fields where we were easily found stripe rust in last November. No stripe rust was found in other counties, except in our experiment field near Walla Walla. When we arrived at the field, it was already dark but we managed to found stripe rust on the susceptible check variety with cell phone light. One spot had 3-4 leaves producing active rust spores (Figure 2).
Figure 1. Stripe rust observed in a winter wheat field between Creston and Wilbur (Lincoln County), Washington on February 26, 2020.
Figure 2. Stripe rust found in a disease monitoring nursery near Walla Walla, WA on February 26, 2020.
On February 26, Christina Hagerty found active stripe rust on the same highly susceptible wheat variety in our stripe rust monitoring nursery planted in Pendleton (Umatilla County), Oregon (Figure 3).
Figure 3. Stripe rust in a disease monitoring nursery at Pendleton, Oregon on February 26, 2020. (Courtesy of Christina Hagerty)
Recommendations for the Pacific Northwest
As the stripe rust has started, management of the disease on winter wheat should start at the time of herbicide application based on the stripe rust ratings in the Seed Buying Guides (such as http://washingtoncrop.com/wp-content/uploads/2019/09/2019-portrait.pdf). For fields planted with varieties rated 5-9 (such as Keldin, LCS Jet, WB4311, Curiosity CL+, Eltan, UI Magic CL+, Xerpha, and ORCL 102), fungicide should be used at the time of herbicide application. For fields planted with varieties rated 4, scout the fields and use fungicide at the time of herbicide application only when active rust is found. For fields planted with varieties rated 1-3, fungicide is not needed.
As stripe rust will be likely severe, planting spring varieties with ratings 1 to 4 may void using fungicide.
Stripe rust in the country
In addition to Oregon and Washington, stripe rust has been reported in Louisiana.
2020 Miller Research Potato Pest Management Seminar Handouts
Potato All Locations
Posted on: February 6, 2020 by Jeff Miller
Miller Research held its 2020 Potato Pest Management Seminar on January 28, 2020, in Rupert, ID. Handouts from the meeting are available at the accompanying link.
» https://millerresearch.com/2020/01/handouts-from-the-miller-research-potato-pest-management-seminar/
Worker Protection Standard Training in Spanish and English
All Crops All Locations
Posted on: January 21, 2020 by Christy Tanner
Unlicensed pesticide handlers and agricultural workers must receive annual training under the WPS, which applies in agriculture, forestry, and nurseries. While you can find training materials and guidance online, this session is offered annually for your convenience by OSU Extension. $25.00 per person
Los manipuladores de pesticidas sin licencia deben recibir entrenamiento anual bajo el WPS, que se aplica en agricultura, silvicultura y viveros. Si bien puede encontrar materiales de entrenamiento y orientación en línea, Extensión de OSU ofrece esta sesión anualmente para su conveniencia. $25.00 por persona
Training sessions held on 1/22/2020 at the Malheur County Extension Office
710 SW 5th Ave. Ontario, OR 97914
Agenda:
https://agsci.oregonstate.edu/psep/worker-protection-standard
Register:
https://secure.touchnet.net/C20159_ustores/web/product_detail.jsp?PRODUCTID=2333&SINGLESTORE=true
» https://agsci.oregonstate.edu/psep/worker-protection-standard
» https://secure.touchnet.net/C20159_ustores/web/product_detail.jsp?PRODUCTID=2333&SINGLESTORE=true
Produce safety Alliance - Grower Training
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Posted on: January 14, 2020 by Stuart Reitz
ODA and OSU Extension are offering a Produce Safety Alliance - Grower Training
Location: Malheur County Extension, 710 SW 5th Ave., Ontario, OR 97914
Date: January 30, 2020
Time 7:30 AM - 5PM
Registration: https://www.eventbrite.com/e/produce-safety-alliance-psa-grower-training-tickets-68508090543?utm_medium=email&utm_source=govdelivery
Description
Your ticket purchase includes the following:
Full-day of instruction by certified Produce Safety Alliance trainers
Certificate of course completion ($35 value)
PSA Grower Training manual ($50 value)
Morning snack, coffee, lunch (Please contact Brittany at 971-218-1409 if you have dietary restrictions)
2-3 pesticide credits (pending ODA approval)
Who Should Attend
Produce growers, buyers, and others interested in learning about:
Best food safety practices for growing, harvesting and packing produce
Key requirements of the Food Safety Modernization Act (FSMA) Produce Safety Rule
Even if your farm or operation isn't covered by the rule (check here!) this low-cost, up-to-the-minute training is a great opportunity for anyone growing, harvesting or handling covered produce.
As a reminder, the PSA Grower Training Course is currently the only way to satisfy the FSMA Produce Safety Rule requirement outlined in § 112.22(c) that requires ‘At least one supervisor or responsible party for your farm must have successfully completed food safety training at least equivalent to that received under standardized curriculum recognized as adequate by the Food and Drug Administration.’
What to Expect at the PSA Grower Training Course
The trainers will covercontent contained on:
Introduction to Produce Safety
Worker Health, Hygiene, and Training
Soil Amendments
Wildlife, Domesticated Animals, and Land Use
Agricultural Water (Part I: Production Water; Part II: Postharvest Water)
Postharvest Handling and Sanitation
How to Develop a Farm Food Safety Plan
In addition to learning about produce safety best practices, key parts of the FSMA Produce Safety Rule requirements are outlined within each module. There will be time for questions and discussion, so participants should come prepared to share their experiences and produce safety questions.
Benefits of Attending the Course
The course will provide a foundation of FSMA Produce Safety Rule requirements and details on how to develop a farm food safety plan. Individuals who participate in this course are expected to gain a basic understanding of:
Microorganisms relevant to produce safety and where they may be found on the farm
How to identify microbial risks, practices that reduce risks, and how to begin implementing produce safety practices on the farm
Parts of a farm food safety plan and how to begin writing one
Requirements in the FSMA Produce Safety Rule and how to meet them.
After attending the entire course, participants will be eligible to receive a certificate from the Association of Food and Drug Officials (AFDO) that verifies they have completed the training course. Participants must be at least 14 years of age to receive the AFDO certificate. To receive an AFDO certificate, a participant must be present for the entire training and submit the appropriate paperwork to their trainer at the end of the course.
Questions?
Call Brittany Mills at 971-218-1409 or bmills@oda.state.or.us
Funding for this training was made possible, in part, by the Food and Drug Administration through grant PAR-16-137. The views expressed in written materials or publications and by speakers and moderators do not necessarily reflect the official policies of the Department of Health and Human Services; nor does any mention of trade names, commercial practices, or organization imply endorsement by the United States Government.
Malheur County Pest Management Short Course
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Posted on: January 9, 2020 by Christy Tanner
Pesticide re-certification course
12 Oregon and 9 Idaho Pesticide credits anticipated
will include 2 aerial credits for Oregon aerial applicators
February 18th, 7:30 am - 5:00 pm and February 19th, 7:30 am - 12:00 pm
Four Rivers Cultural Center, 676 SW 5th Ave. Ontario OR
Registration: $80 per person
Call 541-881-1417 or email christy.tanner@oregonstate.edu to register
Idaho Potato Conference Technical Room
Potato All Locations
Potatoes
Posted on: January 7, 2020 by Nora Olsen
2020 Idaho Potato Conference January 22-23, 2020 in Pocatello, ID
New this year: Technical Room
The Clearwater room at the ISU Student Union Building will be transformed into 1-hour opportunities to learn, interact and ask questions with various companies on the technical use of their equipment. This year companies will focus on agronomic software programs, air-separators, and storage panels.
Agrian and Trimble will be available to talk specifics about their agronomic software programs.
Questions about your harvest air-separators/systems? Spudnik and Lockwood will be available to answer your questions.
IVI, Agri-Stor/Gellert and BTU Ventilation will each be available to go over the various options/opportunities with their storage panels and answer any questions you may have.
Schedule for the Technical Room:
Wednesday January 22, 2020
9:15 to 10:15 am – Agrian (agronomic software program)
11:00 am to noon – Spudnik (harvest equipment)
1:30 to 2:30 pm – Trimble (agronomic software program)
3:00 to 4:00 pm – IVI Industrial Ventilation Inc (storage panels)
4:15-5:15 pm – Agri-Stor/Gellert (storage panels)
Thursday January 23, 2020
8:30 to 9:30 am – Lockwood (harvest equipment)
9:45 to 10:45 am – BTU Ventilation (storage panels)
Visit idahopotatoconference.com for more information and to register for the conference.
2020 Miller Research Potato Pest Management Meeting
All Crops All Locations
Posted on: January 7, 2020 by Jeff Miller
Come to the Miller Research Potato Pest Management Meeting Tuesday, Jan. 28 from 9:00 am to 12:30 pm at the Historic Wilson Theater in Rupert. 3 ISDA pesticide re-certification credits and 3 CCA credits available. See the link or attachment for more details.
» https://millerresearch.com/event/2020-miller-research-potato-pest-management-seminar/
Plan on attending the Idaho Potato Conference January 22-23, 2020
All Crops All Locations
Idaho Potato Conference
Posted on: December 18, 2019 by Nora Olsen
Next month will be the 52nd annual Idaho Potato Conference and Trade Show presented by the University of Idaho and Spectra Productions to be held in Pocatello, Idaho January 22-23, 2020. Additional details and registration can be found at https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
Highlights for this year’s conference include:
- Several seminars and workshops on the impact of the 2019 season including effect of spring rain on weed control, late season bulking and maturity, cold harvest weather and quality, and late season irrigation, disease and weed management.
- Invited speaker Dr. Sastry Jayanty from Colorado State University will present a seminar on How to minimize pressure bruise in long-term storages and a workshop on managing shrinkage in storage. Come listen to these presentations on Wednesday January 22.
- Invited speaker Dr. Carl Rosen from the University of Minnesota will address soil health and crop nutrient management. These presentations are part of a special session with dedicated seminars and workshops specifically focused on soil and crop health on Thursday January 23.
- Variety management and performance of new varieties, irrigation system efficiency, virus, minor insect pests, late blight and other diseases, how potatoes are graded, and much more will be discussed on Wednesday. Including a special panel discussion of industry issues by the Idaho Potato Commission, National Potato Council, and Potatoes USA.
- Optimizing fumigation, soilborne and seedborne diseases, pesticide drift and misapplication, and much more will be presented on Thursday January 23.
- Seminars and workshops in Spanish will be held both days and include a wide variety of topics from farm safety to disease and disorder identification.
- CCA (CEU) and pesticide recertification credits will be available. There will be 13.5 IPM, 8.5 Crop Management, 3 Soil and Water Management, 1 Nutrient Management, and 1 Professional Development CEU credits available this year.
- New this year: a technical room dedicated to learning how various pieces of equipment or technology work. This year will include multiple storage panels, agronomic software and air separators.
- New this year: Come enjoy a free baked potato bar at lunch on Wednesday January 22!
» https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
2020 Miller Research Potato Pest Management Seminar
Potato All Locations
Posted on: December 14, 2019 by Jeff Miller
Miller Research will hold its annual potato pest management seminar on Tuesday, January 28, 2020, at the Historic Wilson Theater in Rupert, ID (610 Fremont St). Registration is $10 to cover meeting costs with all excess funds being donated to the Minidoka County 4H program. Detailed information can be found on the attached flier and at the Miller Research website linked here.
» https://millerresearch.com/event/2020-miller-research-potato-pest-management-seminar/
2019 Landscape & Garden Survey Gift Cards
Announcements All Locations
Posted on: December 13, 2019 by Nic Usabel
Thank you to all who completed the 2019 Landscape & Garden Pacific Northwest Pest Alert Network Survey. The winners of the $75 gift cards to Texas Roadhouse are: Ken Patterson, Talisha Taylor, Owen Pipal. These gift certificates are being mailed to you.
Pesticide Re-certification Class
All Crops All Locations
Posted on: December 9, 2019 by Christy Tanner
Malheur County CORE Pesticide Training
Oregon: 4 CORE Credits
Idaho: 3 Credits (anticipated)
Friday December 13th 2019, 7:30 - 11:50 am MST
$10 registration fee per person (cash or check only)
Malheur County Extension Office
710 SW 5th Ave. Ontario OR 97914
Idaho Potato Conference January 22-23, 2020
Potato All Locations
Posted on: November 22, 2019 by Nora Olsen
Please mark your calendars for the 52nd annual Idaho Potato Conference and Trade Show presented by the University of Idaho and Spectra Productions to be held in Pocatello, Idaho January 22-23, 2020. Additional details and registration can be found at https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
Highlights for this year’s conference include:
- Several seminars and workshops on the impact of the 2019 season including effect of spring rain on weed control, late season bulking and maturity, cold harvest weather and quality, and late season irrigation, disease and weed management.
- Invited speaker Dr. Sastry Jayanty from Colorado State University will present a seminar on How to minimize pressure bruise in long-term storages and a workshop on managing shrinkage in storage. Come listen to these presentations on Wednesday January 22.
- Invited speaker Dr. Carl Rosen from the University of Minnesota will address soil health and crop nutrient management. These presentations are part of a special session with dedicated seminars and workshops specifically focused on soil and crop health on Thursday January 23.
- Variety management and performance of new varieties, irrigation system efficiency, virus, minor insect pests, late blight and other diseases, how potatoes are graded, and much more will be discussed on Wednesday. Including a special panel discussion of industry issues by the Idaho Potato Commission, National Potato Council, and Potatoes USA.
- Optimizing fumigation, soilborne and seedborne diseases, pesticide drift and misapplication, and much more will be presented on Thursday January 23.
- Seminars and workshops in Spanish will be held both days and include a wide variety of topics from farm safety to disease and disorder identification.
- CCA and pesticide recertification credits will be available.
- New this year: a technical room dedicated to learning how various pieces of equipment or technology work. This year will include multiple storage panels, agronomic software and harvest equipment.
- New this year: Come enjoy a free baked potato bar at lunch on Wednesday January 22!
» https://www.uidaho.edu/cals/potatoes/news/idaho-potato-conference
Fall and Winter Watering
Landscape and Garden All Locations
Posted on: November 18, 2019 by Maria Held
With no rainfall for a few weeks and none in the forecast make sure to water you landscape at least one more time before winter. It is important for anything planted this year especially trees and shrubs. This will give your plants the best possible start next spring and make them less susceptible to pests and diseases.
» https://extension.colostate.edu/topic-areas/yard-garden/fall-and-winter-watering-7-211/
Idaho Association of Plant Protection Annual Meeting, Nov 6 -7
All Crops All Locations
IAPP
Posted on: November 4, 2019 by Juliet Marshall
Final Agenda included for the 2019 annual IAPP meeting
Idaho Association of Plant Protection Meeting Annual Meeting
Final Reminder
at Canyon Crest Dining and Event Center, Twin Falls
330 Canyon Crest Dr, Twin Falls, ID 83301
$15 REGISTRATION PAY IN CASH OR BRING CHECK
Nov 7 Wednesday registration starting at 12:00 PM (no lunch provided).
Presentations start at 1:00 PM
Nov 8 Thursday. Presentations start at 8 AM
3 CCA credits for Pest Management are available for each day
3 ISDA credits are available for Wednesday and 2 ISDA credits available for Thursday
Updated manual and resources now available to help navigate the 2019 Potato Sustainability Initiative (PSI) survey
Potato All Locations
Potato Sustainability Initiative Survey
Posted on: October 25, 2019 by Nora Olsen
Updated manual and resources now available to help navigate the
2019 Potato Sustainability Initiative (PSI) survey
Potato growers—you will soon be asked to answer the annual Potato Sustainability Initiative (PSI) survey. Most process, and some fresh, growers are requested to participate in the PSI sustainability survey. Please note: there will be no audit for the 2019 survey.
In the past, approximately 20% of the growers who completed the survey were audited each year. The audit involved an interview between the grower and auditor with specific questions and an inspection of documents. A manual was developed to help growers methodically and successfully gather required documents for the audit, with examples of standard operating procedures, and resources to help answer interview questions. Audit information was retained in the manual as a reference and resource for future audits.
The manual is posted at https://www.uidaho.edu/cals/potatoes/food-and-farm-safety
The 2019 survey changed slightly from the 2018 survey.
The manual was developed by University of Idaho, Washington State University and IACI with funding from the NW Potato Research Consortium.
Idaho Association of Plant Protection Annual Meeting, Nov 6 -7 in Twin Falls, Idaho
All Crops All Locations
Posted on: October 21, 2019 by Juliet Marshall
A reminder that the IAPP Meeting is scheduled November 6, Wednesday, at Canyon Crest in Twin Falls starting 1 PM going through 5 PM.
The meeting resumes at Canyon Crest on Thursday the 7th at 8 AM and going through noon.
3 CCA credits for Pest Management are available for each day
ISDA pesticide applicator credits have been requested.
WHAT: Idaho Association of Plant Protection
WHERE: Canyon Crest Dining and Event Center, 330 Canyon Crest Dr, Twin Falls, ID 83301
WHEN: Nov 6 and Nov 7, 2019
Starts at 1 PM Nov 6, resumes at 8 AM on Nov 7
AGENDA: Attached
Thank you.
Malheur County Cover Crops Tour
All Crops All Locations
Posted on: October 3, 2019 by Christy Tanner
9 am - 12 pm Monday, October 7th 2019
Malheur Experiment Station
595 Onion Ave. Ontario, OR 97914
Tour will include cover crop trials at the experiment station, as well as cover crops and no-till on local farms.
Treasure Valley Tomato Taste Off & Information Tables
Landscape and Garden All Locations
Posted on: September 16, 2019 by Maria Held
Third Annual FREE Tomato Taste Off Saturday, September 21, 2019 at the Indian Creek Festival in Caldwell.
Entries can be dropped off at the Canyon County Extension Office,
501 Main St, Caldwell on Friday September 20 from 1:00 PM-4:30 PM
or bring them to our festival booth from 9:00 AM-10:30 AM on Saturday. Enter 4 cups of cherry tomatoes or 3 (larger) to 5 (smaller) slicers or paste tomatoes to compete for prizes. Tasting and voting will be from 11:00 AM-1:00 PM
Minimizing Foreign Material in Potatoes: Download a printable poster and view on-line educational videos at www.uidaho.edu/cals/potatoes/food-and-farm-safety
All Crops All Locations
Foreign material
Posted on: September 10, 2019 by Nora Olsen
Minimizing Foreign Material in Potatoes:
Download a printable poster and view on-line educational videos at www.uidaho.edu/cals/potatoes/food-and-farm-safety
Foreign material is any material that is not the potato tuber. It is "trash" or "garbage" in potatoes. Many foreign materials originate in the field, but others enter the product stream through equipment and during storage and handling. Whether potatoes are destined for the fresh market or processing, foreign material is a great concern to the Idaho potato industry. By minimizing foreign material in the field, in storage, and in the processing plant, growers and processors help maintain a high-quality product, safe standards, and consumer confidence.
The video “Continuing to Manage Foreign Material for Quality Idaho Potatoes” outlines ways you can reduce foreign material in your potatoes. The video (English and Spanish versions) are available on-line at www.uidaho.edu/cals/potatoes/food-and-farm-safety.
New this year: Remove Foreign Materials poster. Download and print a poster (16" x 24”) that provides examples of common foreign material found in potato production. Display the poster in areas to educate employees and as a reminder to remove foreign material.
Call for Pink Rot
Potato All Locations
Pink Rot (Phytophthora erythroseptica)
Posted on: September 6, 2019 by Jeff Miller
Miller Research has received funding to evaluate the pink rot pathogen (Phytophthora erythroseptica) for sensitivity to mefenoxam and phosphorous acid. If you observe pink rot, please send us samples. It is best to send tubers which are only partially decayed and still have some healthy tissue remaining. It is very difficult, if not impossible, to isolate the organism from completely rotted tubers.
Wrap tubers in dry paper towels and send them as quickly as possible to:
Miller Research
426 E 200 N
Rupert, ID 83350
Please contact Cheryn Clayton by phone (208-531-5124) or email (cheryn@millerresearch.com) to notify us that samples are being sent. If you have any questions, please feel free to contact me at 208-431-4420.
Good luck with harvest!
Jeff Miller
Psyllid update September 5 2019
Potato All Locations
Potato Psyllid
Posted on: September 5, 2019 by Lucy Standley
This week we had traps deployed in 62 of the 79 fields (78.4%) monitored this year, and we found a total of 32 psyllids across 13 (16.4%) of the 79 monitored fields. Many of the 79 total fields that we were sampling have been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (6 fields), Owyhee (2 fields), Twin Falls (2 fields), Jerome (1 field), and Power (1 field).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Our research with Russet Burbank in Idaho has shown that plants should be protected from infection with the ZC bacterium at least until one week before vine kill to reduce ZC symptoms. Therefore, we continue to urge growers to maintain their IPM programs.
We are not including “heat maps” this week given that they tend to show skewed patterns with smaller sample sizes.
Following recommendations from our ZC Advisory Committee last year, we shortened the duration of our monitoring program. This week we conclude the official monitoring program, though we will continue monitoring fields at the Kimberly Research & Extension Center as well as grower- and crop consultant-submitted samples. We will post any important updates that develop.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
2019 Vine Kill Recommendations - Late Blight infected and non-infected fields
Potato All Locations
Vine Kill
Posted on: August 30, 2019 by Pamela Hutchinson
Information about vine kill with little or no mechanical operations (beating/flailing, splitting vines). Late blight spores can spread by mechanical vine kill. Use of only vine-kill chemical products can provide enough reduction of plant material for efficient harvest.
Psyllid abundance remains relatively steady
Potato All Locations
potato psyllid
Posted on: August 29, 2019 by Erik Wenninger
This week we had traps deployed in 76 of the 79 fields (96.2%) monitored this year, and we found a total of 58 psyllids across 26 (32.9%) of the 79 monitored fields. Three of the 79 total fields that we were sampling have been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (10 fields), Elmore (4 fields), Twin Falls (4 fields), Jerome (2 fields), and Cassia (3 fields).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Overall psyllid captures have remained relatively steady over the last few weeks. However, we continue to urge growers to maintain their IPM programs.
“Heat maps” of this week’s results can be found on the UI and WSU websites linked below. The moderately “hot spot” observed during recent weeks in the western Treasure Valley remains, with another small area of moderate pressure south of Mountain Home.
This was the last sample week for quite a few of our fields, so we likely will not include heat maps next week given that they tend to be skewed with smaller sample sizes.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
Fruit Field Day at Parma Research & Extension
Landscape and Garden All Locations
Posted on: August 29, 2019 by Maria Held
The University of Idaho Pomology and Viticulture Fruit Field Day is taking place on Friday, September 6th from 8:30 am to 1 pm at the University of Idaho Pomology Research Orchards and Vineyards
31727 Parma Rd, Parma, ID 83660. This is a free event for anyone interested in fruit production.
Please RSVP to maurineb@uidaho.edu or call 208-791-6228 with the number in your party.
See the attached flyer for directions.
Potato Disease Spore Trapping Bulletin August 19th to 23rd specific to the late blight outbreak in Paul
Potato All Locations
Potato Late Blight
Posted on: August 28, 2019 by James Woodhall
Late blight outbreak in Paul – update
Phytophthora infestans has been reported in eight fields in the Paul area. The initial findings were on the 19th of August. There have been no new reports since Friday 23 August.
In the spore trap directly located in the outbreak area, Phytopthrora infestans was detected on three of the four days it was operating. No other spore traps tested positive for Phytophthora infestans this week, including the spore traps at Acequia and east of Rupert. Also, no critical periods of humidity have been observed since the 13th of August. Therefore the risk of late blight outside the affected area near Paul is likely to be less than last week.
It is likely that the outbreak at Paul was associated with periods of high humidity above 90% for several hours observed on 30th and 31st July and on the 8th, 9th and 10th of August. No periods of 90% relative humidity have been observed at the Paul weather station since the 13th of August.
Growers in the immediate area close to the outbreak are asked to remain vigilant and continue to taking measures to protect themselves against late blight through comprehensive scouting and applications of the appropriate fungicides. Growers in the wider Magic Valley, particularly east of Paul, are advised to continue being vigilant for the pathogen, particularly if humidity levels increase. Although weather does not appear to be conducive for disease development, airborne spores have been detected and a risk still remains.
No spores were detected at Rexburg this week. The last detection there was the 31st July. No periods of critical humidity (RH 90% and above) have been observed since the 9th of August. Risk levels can now be considered ‘normal’ for this area.
James Woodhall
Potato Disease Spore Trapping Bulletin August 12th to 18th plus further information on the late blight outbreak in Paul
Potato All Locations
Potato Late Blight
Posted on: August 22, 2019 by Juliet Marshall
At the request of Dr. James Woodhall, I am sending this late blight update. This is additional information to that sent yesterday by Dr. Jeff Miller.
News for the current week
Late blight disease was observed in six fields in the vicinity of Paul on Monday 19th August. This was confirmed by both PCR and LAMP and the genotype was determined to be US23.
Spores of Phytophthora infestans (late blight) were found on two days at Acequia and at one day in Rupert in spore traps (these are the two nearest traps to the outbreak).
Spores of Alternaria solani (early blight) were found at Parma (4 days), Golden Valley (1 day), Tetonia (1 day), Acequia (3 days) and Rupert (3 days).
Spores of Sclerotinia sclerotium (white mold) were found at Acequia (2 days) and Golden Valley (1 day).
Recommendations
Growers in the vicinity of the outbreak should include fungicides with activity to Phytohthora infestans in their spray program. Please consider that spores were found up to 15 miles away from the infected area (see risk maps attached).
Growers in the rest of the Magic Valley should be on high alert for Phytophthora infestans and actively scout for the disease and consider using appropriate fungicides in their spray program.
We also ask that growers in the Rexburg area continue to be vigilant and scout for the pathogen as a spore trap there was positive for P. infestans a few weeks ago.
The risk outside those areas is likely to be relatively low, prior to the detection in Rexburg on the 31st July, no other trap in the network has tested positive since June. Nevertheless please consider late blight has been reported in Idaho and is a potential source of inoculum.
Detailed information on late blight disease, its management, sources of help and diagnosis, are provided in the document attached.
Best wishes,
James, Kasia and Phill
» Late blight outbreak more information
» Map
» Graphic
Psyllid monitoring update 22 Aug 2019
Potato All Locations
Potato Psyllid
Posted on: August 22, 2019 by Lucy Standley
This week we had traps deployed in 78 of the 79 fields (98.7%) monitored this year, and we found a total of 52 psyllids across 26 (32.9%) of the 79 monitored fields. One of the 79 total fields that we were sampling has been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (9 fields), Owyhee (2 fields), Elmore (1 field), Twin Falls (6 fields), Jerome (3 fields), Cassia (1 field), and Minidoka (1 field).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Overall psyllid captures have remained relatively steady over the last few weeks. However, we continue to urge growers to maintain their IPM programs.
“Heat maps” of this week’s results can be found on the UI and WSU websites linked below. The “hot spots” observed during recent weeks in the western Treasure Valley have diminished somewhat.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
August 2019 Idaho outbreak of potato late blight – further information and recommendations
Potato All Locations
Late Blight
Posted on: August 22, 2019 by James Woodhall
Please see the attached sheets for more information on the current late blight outbreak in southern Idaho.
Idaho Association of Plant Pathology Annual Meeting, Nov 6 -7 in Twin Falls, Idaho
All Crops All Locations
IAPP
Posted on: August 21, 2019 by Juliet Marshall
This is an invitation and call for papers for the 2019 annual meeting of the Idaho Association of Plant Protection in Twin Falls, ID at the Canyon Crest Dining and Event Center. The conference will cover all aspects of plant protection including entomology, nematology, weed science and plant pathology.
Please consider contributing research results, observations, unusual pest and disease occurrences and topics which could be discussed as a group, etc. to the meeting. Each presentation will be allotted at least a 20-minute time slot. A final program will be advertised in October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations must be made on your own.
Please reply by email and / or complete and return the bottom half of the attached form. If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information. Responses can be sent to:
James Woodhall
jwoodhall@uidaho.edu
University of Idaho, Parma R&E Center
Late blight found in southwestern Minidoka County
Potato All Locations
Late Blight
Posted on: August 19, 2019 by Jeff Miller
Late blight has been found in southwest Minidoka County near the town of Paul in multiple potato fields. Late blight sporulation was observed on diseased tissue. The University of Idaho will be checking for additional confirmation by PCR.
Weather conditions are not favorable for pathogen spread, but the blight is extensive in some of these fields. Risk of spread would be very high if thunderstorms develop. It is recommended that growers maintain an effective fungicide program to protect against late blight. Additional information on late blight fungicides can be found at the website below. The article was written in 2018, but the information is still applicable for this year.
Miller Research is interested in mapping the extent and severity of the blight. If you find late blight, please let us know. Locations will be kept confidential.
Tomato Fruit Issues
Landscape and Garden All Locations
Posted on: August 19, 2019 by Maria Held
Are you experiencing issues with you tomato fruit like blossom end rot, catfacing, splitting, zippering and such? Below are some links to help you determine what is going on with your tomatoes. Remember that variety selection and consistent watering are important in preventing some of these problems.
» http://vegetablemdonline.ppath.cornell.edu/NewsArticles/Tom_ComDis.htm
» http://blogs.cornell.edu/livegpath/gallery/tomato/zippering-fruit-disorder-on-tomatoes
» http://blogs.cornell.edu/livegpath/gallery/tomato/thrips-and-their-feeding-injury/
» http://blogs.cornell.edu/livegpath/gallery/tomato/feeding-injury-caused-by-stink-bugs/
First call for topics for the 2020 Idaho Potato Conference
Potato All Locations
Posted on: August 19, 2019 by Jerry Neufeld
This the first call for topics for the 2020 Idaho Potato Conference that will take place in Pocatello on January 22nd and 23rd. Please provide your ideas for potential workshops and presentations for this year's conference to Kasia Duellman (kduellman@uidaho.edu), Nora Oslen (norao@uidaho.edu) or Mike Thornton (miket@uidaho.edu) by September 16th so that we can put together a preliminary list for a program planning meeting. Please also take the time to survey your stakeholders for any input and indicate whether you would be interested and willing to present a workshop or seminar.
Thank you, and we look forward to seeing your responses.
Sincerely,
Kasia Duellman, Nora Olsen and Mike Thornton
Co-Chairs 2020 UI Potato Conference
UI Ag Talk Tuesday August 20 at 8:00AM in Rupert
All Crops All Locations
General announcment
Posted on: August 16, 2019 by Kasia Duellman
Join us for the last scheduled UI Ag Talk Tuesday of 2019 on Tuesday, August 20 at 8:00 AM at the University of Idaho Minnidoka County Extension Office (85 E Baseline Rd, Rupert, ID).
Invited Speakers:
Jason Thomas - Utilizing Barn Owl Boxes to Manage Voles
Steve Hines - Cover Crops
Other Topics are determined by YOU. Interaction and input from all attendees are welcomed and encouraged.
You can join in person, or by phone by dialing the following number and meeting ID:
Call-in Number: (669) 900-6833
Meeting ID: 349427773
You can also join the meeting by using Zoom on your computer:
Zoom link: https://uidaho.zoom.us/j/349427773
2019 Organizers: Kasia Duellman (kduellman@uidaho.edu), Pam Hutchinson (phutch@uidaho.edu), and Juliet Marshall (jmarshall@uidaho.edu)
Previous newsletters related to these sessions are available here: https://webpages.uidaho.edu/extension-seed-potato/ATT.html
August 15, 2019 Psyllid Monitoring Update
Potato All Locations
Potato Psyllid
Posted on: August 15, 2019 by Lucy Standley
This week we had traps deployed in 76 of the 79 fields (96.2%) monitored this year, and we found a total of 55 psyllids across 24 (30.4%) of the 79 monitored fields. One of the 79 total fields that we were sampling has been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (2 fields), Canyon (11 fields), Owyhee (1 field), Elmore (1 field), Gooding (1 field), Twin Falls (5 fields), Jerome (1 field), Cassia (1 field) and, Minidoka (1 field).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Overall psyllid captures have remained relatively steady over the last few weeks. However, we continue to urge growers to maintain their IPM programs.
“Heat maps” of this week’s results can be found on the UI and WSU websites linked below. We continue to observe a “hot spot” in the western Treasure Valley.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Malheur Experiment Station Onion Variety Day August 27
All Crops All Locations
Posted on: August 14, 2019 by Janet Jones
You are invited to the Malheur Experiment Station Onion Variety Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
in the field off Onion Avenue under the canopy.
Date: Tuesday, August 27, 2019
Registration starts at 9:00am with donuts and refreshments in the onion field.
A complimentary lunch will be served at noon in the barn.
Click on the PDF below for the Flyer.
Please RSVP for lunch or if you need more information call
Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
August 8, 2019 First psyllid in eastern Idaho this year
Potato All Locations
Potato Psyllid
Posted on: August 8, 2019 by Lucy Standley
This week we had traps deployed in 78 of the 79 fields (98.7%) monitored this year, and we found a total of 73 psyllids across 27 (34.2%) of the 79 monitored fields. However, we are still waiting to receive traps from 3 sites in the Magic Valley. One of the 79 total fields that we were sampling has been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (9 fields), Elmore (2 fields), Gooding (1 field), Twin Falls (6 fields), Jerome (1 field), Cassia (2 fields), Minidoka (2 fields), and Bingham (1 field). This was our first capture of a potato psyllid this year in eastern Idaho, which consistently has shown later first incidence of psyllids and lower abundance overall.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid captures have fluctuated only a bit over the past three weeks, and thankfully we have not observed hot psyllids since mid-July.
“Heat maps” of this week’s results can be found on the UI and WSU websites linked below. “Hot spots” continue to be observed in the western Treasure Valley.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
August 1, 2019 Psyllid captures declined a bit this week
Potato All Locations
Potato Psyllid
Posted on: August 1, 2019 by Lucy Standley
This week we had traps deployed in 81 of the 82 fields (98.7%) monitored this year, and we found a total of 67 psyllids across 27 (32.9%) of the 82 monitored fields. However, we are still waiting to receive traps from 19 sites in eastern Idaho. One of the 82 total fields that we were sampling has been vine-killed.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (12 fields), Owyhee (1 field), Elmore (3 fields), Twin Falls (6 fields), Cassia (1 field), and Minidoka (1 field).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid captures dropped a bit relative to last week; however, we continue to urge growers to maintain their IPM programs, especially given that we have historically seen an increase in captures during August.
“Heat maps” of this week’s results will soon be included on the UI and WSU websites (see links below), pending resolution of technical difficulties we are currently having with them.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
UI Ag Talk Tuesday August 6 at 8:00AM in Pocatello
All Crops All Locations
General announcment
Posted on: July 30, 2019 by Kasia Duellman
Join U of I Extension personnel next Tuesday, August 6, for another UI Ag Talk Tuesday session, held this time at 8:00 AM at the Bannock County Extension office, 10560 Fairgrounds Rd, Pocatello.
The featured topic will be presented by U of I Extension specialist Ben Eborn, UI Extension Ag Economist. He will talk about economics/cost of production/markets forecast. Other topics are determined by YOU and those who attend, either in person or by Zoom.
To attend by Zoom,
Call-in Number: (669) 900-6833
Meeting ID: 349427773
(Optional) Zoom link: https://uidaho.zoom.us/j/349427773
See you there!
The UI Ag Talk Tuesday sessions are held first and third Tuesdays during the growing season (May through August) unless otherwise indicated, at different locations across southeastern Idaho. Following the sessions, a newsletter is made available that summarizes the topics discussed and provides articles on other timely topics.
July 25, 2019 One more Lso-positive psyllid found in Idaho
All Crops All Locations
Potato Psyllid
Posted on: July 25, 2019 by Lucy Standley
This week we had traps deployed in 83 of the 83 fields (100%) monitored this year and we found a total of 107 psyllids across 32 (35.9%) of the 83 monitored fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (11 fields), Owyhee (2 fields), Elmore (4 fields), Twin Falls (9 fields), Jerome (2 fields), and Cassia (1 field).
From last week’s samples, 1 psyllid tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). This hot psyllid was collected from one field in Twin Falls County.
Given the recent incidence of Lso observed in psyllids, we strongly urge growers and crop consultants to maintain their IPM programs.
The uptick in psyllid abundance this week is not surprising given that we historically have seen an increase in captures during late July through August. Abundance of psyllids so far has been higher this year than during the last two, but still not as high as during 2016 when hundreds of psyllids were captured each week during this time.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
Powdery Mildew in Sugarbeets - 2019 - Twin Falls District
Sugarbeets All Locations
Powdery Mildew
Posted on: July 23, 2019 by Jerry Neufeld
Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the Twin Falls District. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
2019 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 22, 2019 by Jeff Miller
Miller Research will be holding their annual potato pest management field day on Thursday, August 15 at the Miller Research facility located near Acequia, ID (426 E 200 N). The event is open to the public and there is no cost to attend.
Topics addressed on the tour will include:
• Susceptibility of varieties to disease with and without fungicide management.
• Fungicides for the control of early blight, brown spot, white mold, and black dot.
• Rhizoctonia management
• Fungicide programs for managing pink rot and Pythium leak
• Spore trapping for managing foliar diseases of potato
The presentations will focus on chemical management of diseases and will highlight research which has been funded by the Pacific Northwest Potato Research Consortium. ISDA pesticide recertification credits (2) and CCA Pest Management credits (2) have been awarded for this meeting.
In order to plan appropriately for lunch, please RSVP to by August 6 to Cheryn Clayton at 208-531-5124 or by email at cheryn@millerresearch.com.
» http://millerresearch.com/event/2019-miller-research-potato-pest-management-field-day/
July 18, 2019 First Lso-positive psyllids found in Idaho
Potato All Locations
Potato Psyllid
Posted on: July 18, 2019 by Lucy Standley
This week we had traps deployed in 83 of the 83 fields (100%) monitored this year and we found a total of 59 psyllids across 29 (34.9%) of the 83 monitored fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (11 fields), Elmore (3 fields), Twin Falls (10 fields), Jerome (3 fields), and Cassia (1 field).
From last week’s samples, 5 psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). These hot psyllids were collected from one field in Payette County and two fields in Twin Falls County. In addition, one psyllid collected from a field in Canyon County in mid-June (before our monitoring program had officially started) tested positive for Lso.
Given the incidence of Lso observed in psyllids, we strongly urge growers and crop consultants to maintain their IPM programs.
We apologize for not having “heat maps” yet this week. We hope to have them generated before next week and posted on our website.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Black Bean Aphid -2019
Sugarbeets All Locations
Black Bean Aphid
Posted on: July 17, 2019 by Jerry Neufeld
The Amalgamated Sugar Company personnel are reporting that Black Bean Aphids have been found in sugarbeet fields in the Magic Valley. Insecticides for Black Bean Aphid and Fungicides for Powdery Mildew can be tank mixed; however, TASCO has some concerns about the amount of water carrier used when these products are applied by air. TASCO asks that you contact your crop consultant if you have any application questions. Click on the link below for more information about Black Bean Aphid in the Pacific Northwest Insect Management Handbook.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-aphid
UI Talk Tuesday session for July 16 cancelled
All Crops All Locations
General announcment
Posted on: July 11, 2019 by Kasia Duellman
The UI Ag Talk Tuesday session scheduled for July 16 at the Bonneville County Fairgrounds (Idaho Falls) has been cancelled.
The remaining sessions are still planned.
August 6 (8:00 AM):
Bannock County Extension Office
10560 Fairgrounds Rd
Pocatello
Topics:
Economics/cost of production/markets forecast (Ben Eborn)
Weeds update (Pam Hutchinson)
Other topics determined by those who attend
August 20 (8:00 am)
Minnidoka County Extension Office (McGregor Center)
85 East Baseline Rd
Rupert
Topics:
Utilizing Barn Owl Boxes to Manage Voles (Jason Thomas)
Cover crops (Steve Hines)
Aphid Monitoring, Storage disease issues (Kasia Duellman)
Weed update (Pam Hutchinson)
Other topics determined by those who attend
Psyllid monitoring program underway
Potato All Locations
Potato Psyllid
Posted on: July 11, 2019 by Lucy Standley
The 2019 University of Idaho monitoring program for potato psyllids and liberibacter (Lso), the bacterium associated with zebra chip disease (ZC), is underway. Following recommendations from our ZC Advisory Committee last year, we shortened the duration of the program. We also plan to post weekly updates by Thursday each week instead of Friday.
This week, we collected 38 psyllids from sticky cards (across 20 sites).
Psyllids were collected on sticky traps in potato in the following counties: Payette (2 fields), Canyon (7 fields), Owyhee (2 fields), Elmore (3 fields), Twin Falls (3 fields), Jerome (2 fields), and Minidoka (1 field).
We had traps deployed in 53 of the 83 fields (63.8%) monitored this year and found psyllids in 19 of the monitored fields (37.7%).
During the previous week (before the monitoring program officially began), we collected 14 psyllids across 7 of 25 fields that were monitored (psyllids were captured in Payette, Canyon, and Owyhee counties).
All psyllids tested so far have been negative for Lso. Nevertheless, we urge growers and crop consultants to maintain their IPM programs.
“Heat maps” of this week’s results will not be made given that a relatively low number of psyllids and sites (traps in several fields were just deployed this week) tends to result in skewed maps.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Onion Thrips update 7/6/2019
All Crops All Locations
Onion thrips
Posted on: July 7, 2019 by Stuart Reitz
Overall thrips pressure continues, as is typical for early July. With the warmer conditions, thrips will develop faster so numbers will rebound sooner after insecticide applications. At this time of year, most thrips are ones developing within onion crops. However, dispersal from other plants still continues. Wheat has dried down so the thrips have left it; do pay attention to when hay fields are cut as significant numbers of onion thrips can disperse out of those fields after cutting.
I found Iris yellow spot in about 20% of the fields this week. Those fields have been in Ontario, Nyssa and Fruitland. So far, it has been at low levels in most of those fields.
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.03 0.04 0.06 0.15 2.47 4.41 5.22 5.51
Vale 0.15 0.55 1.64 2.60 4.79 6.44 5.72 3.99
Ontario 0.07 0.03 0.78 0.71 1.92 4.35 5.98 5.66
Nyssa 0.02 0.07 1.32 1.03 3.67 5.20 7.33 3.98
Adrian 0.02 0.22 1.60 1.67 2.15 2.63 7.60 2.82
Fruitland 0.05 0.03 0.19 0.94 1.29 6.12 6.30 1.82
Parma - 0.09 1.60 0.67 2.75 7.89 3.47 6.54
Overall Average 0.06 0.15 1.03 1.11 2.72 5.29 5.95 4.33
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.00 0.00 0.00 0.26 5.45 12.55 9.90 10.19
Vale 0.00 0.41 6.28 4.20 11.16 5.99 11.64 17.73
Ontario 0.00 0.00 3.60 1.71 8.71 22.81 21.28 9.63
Nyssa 0.00 0.02 3.56 5.52 8.00 10.58 26.98 12.75
Adrian 0.00 0.00 8.42 3.64 5.45 1.10 5.17 8.92
Fruitland 0.00 0.00 0.16 2.20 3.39 7.62 1.55 0.46
Parma - 0.00 1.97 4.37 1.66 2.90 12.78 49.01
Overall Average 0.00 0.06 3.43 3.13 6.26 9.08 12.76 15.53
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.03 0.04 0.06 0.42 7.92 16.96 15.12 15.69
Vale 0.15 0.96 7.92 6.79 15.96 12.43 17.36 21.71
Ontario 0.07 0.03 4.38 2.42 10.63 27.16 27.26 15.29
Nyssa 0.02 0.09 4.88 6.55 11.67 15.78 34.31 16.73
Adrian 0.02 0.22 10.01 5.31 7.61 3.73 12.77 11.74
Fruitland 0.05 0.03 0.35 3.14 4.68 13.74 7.85 2.28
Parma - 0.09 3.58 5.03 4.41 10.79 16.25 55.56
Overall Average 0.06 0.21 4.45 4.24 8.98 14.37 18.70 19.86
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0% 4% 6% 14% 68% 81% 93% 86%
Vale 0% 31% 64% 54% 81% 83% 76% 89%
Ontario 0% 3% 34% 35% 73% 89% 96% 75%
Nyssa 0% 5% 73% 56% 70% 87% 97% 71%
Adrian 0% 19% 57% 53% 70% 86% 98% 87%
Fruitland 0% 3% 17% 50% 54% 94% 100% 65%
Parma 0% 7% 54% 41% 89% 84% 74% 90%
Overall Average 0% 10% 43% 43% 72% 86% 91% 80%
IYSV Incidence (% plants with lesions)
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Vale 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Ontario 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.9% 1.0%
Nyssa 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.2%
Adrian 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Fruitland 0.0% 0.0% 0.0% 0.0% 0.0% 0.2% 9.4% 6.1%
Parma 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Overall Average 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 1.5% 1.0%
* the decrease in Fruitland is a sampling artefact – this week includes fields not sampled last week because of spraying
July 17 Aberdeen Collaborative Field Day
Small Grains All Locations
Cereal Field Days - Update on varieties, diseases (stripe rust, foot rots, frost damage, etc)
Posted on: July 2, 2019 by Juliet Marshall
Wednesday, July 17 | 8:30 a.m.
FREE and open to the public - Please share this invitation!
Aberdeen Research Station | 1693 2700 West Rd, Aberdeen, ID 83210
Google Map
See the latest in advanced grain genetics
Tour of current and new public and private winter wheat and barley varieties for southern Idaho
Q&A with experts from the University of Idaho, The Andersons and Limagrain Cereal Seeds
Eat, drink and be merry
Hot coffee and donuts to greet you
Catered lunch with good company
Wheat and barley food products to sample
Collaborative local craft brew with Mountain Malt and Portneuf Valley Brewing
Reserve your spot by Monday, July 8
University of Idaho | jmarshall@uidaho.edu
Limagrain Cereal Seeds | hannah.kammeyer@limagrain.com
2019 Potato psyllid monitoring program in Idaho
Potato All Locations
potato psyllid
Posted on: June 28, 2019 by Erik Wenninger
The University of Idaho, in collaboration with crop consultants across the state, will continue our monitoring program for potato psyllids, zebra chip disease, and liberibacter (Lso), the bacterium associated with zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission, USDA, and generous in-kind contributions by our collaborators.
Following recommendations from our ZC Advisory Committee last year, we are shortening the duration of the program. We still plan to monitor about 100 fields across the state, but only with 4 sticky traps per field rather than the more intense sampling that was conducted on some fields in the past.
The first official deployment of sticky traps for the program will occur next week. However, following earlier than usual observation of potato psyllids in Oregon, we began deploying traps on a limited basis over the last three weeks. During the week of June 10, we captured 22 potato psyllids across six fields in Canyon County and one psyllid in a field in Payette County. During the week of June 17, we captured one psyllid in each of two fields in Canyon County and three psyllids across two fields in Payette County. We have yet to observe potato psyllids in Twin Falls County after three weeks of monitoring in a few fields. Over the last two weeks, we found psyllids in 8 of 12 fields (67%) and 4 of 23 fields (17%) being monitored, respectively.
It should be noted that observation of potato psyllids in Idaho during June is not at all unexpected. We typically would find our first psyllids during mid-May.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
» http://www.uidaho.edu/cals/potatoes/news/psyllid-management
Cercospora leaf spot in Sugarbeets - 2019
Sugarbeets All Locations
Cercospora leaf spot
Posted on: June 28, 2019 by Jerry Neufeld
Cercospora leaf spot has been found by The Amalgamated Sugar Company in fields near eastern Oregon, Treasure Valley, western Magic Valley. Incidence is low and likely does not warrant treatment yet. However, when inoculum is present, infection will progress with warmer temperatures and increased irrigation and relative humidity. There are several fungicides available for use to treat Cercospora leaf spot, but be aware of multiple fungicide resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days.
Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your area, to report a loss of fungicide efficacy, or if you have any questions.
Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
Powdery Mildew in Sugarbeets - 2019
Sugarbeets All Locations
Powdery Mildew
Posted on: June 27, 2019 by Jerry Neufeld
Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in fields near Adrian, Oregon and western Idaho. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
UI Ag Talk Tuesday July 2 at 8:00 AM at the Idaho AgCredit Rexburg branch
All Crops All Locations
Posted on: June 27, 2019 by Kasia Duellman
Reminder: The next UI Ag Talk Tuesday will be hosted in Rexburg July 2 at the Idaho AgCredit Rexburg branch, 1586 N. 2nd E., at 8:00 AM.
Join UI Researchers, Extension Personnel, and ag professionals to learn about timely topics in ag production. For this next session on July 2, Jon Hogge will update us on the latest thrips investigations and cereal diseases. Other topics may include potato diseases, weed issues, and other crop challenges currently being faced.
These events are offered on the first and third Tuesdays at 8AM throughout the growing season at different locations in eastern Idaho. Breakfast beverages (coffee, juice) and light breakfast fare (e.g., pastries/donuts/fruits) will be provided. Venue and location differs, so look for the announcements via Treasure Valley Pest Alerts and on the UI Extension Calendar.
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
UI Dryland Cereals Field Day - THURSDAY June 27th
Small Grains All Locations
Cereal Field Days - Update on varieties, diseases (stripe rust, foot rots, frost damage, etc)
Posted on: June 25, 2019 by Juliet Marshall
Join us for our first field day of the season! (South Eastern Idaho Extension and Wheat Breeding Trials). Catch up on the latest varieties, see the new releases from the UI Wheat breeding program based in Aberdeen and join the discussion on the latest diseases and issues in cereals. Looking forward to seeing you at one of our field days!
June 27, 2019 - THURSDAY
Rockland / Arbon
9:30 AM Rockland, West of Rock Creek Rd on Deeg Rd, Rockland, ID
2:00 PM Arbon on Mink Creek Road, Arbon, ID
» https://www.uidaho.edu/extension/cereals/scseidaho
» UI_Extension_2019_Cereals_Field_Days_For_Southern_Eastern_ID.pdf
Potato herbicide solubility and effects - Spring 2019
Potato All Locations
Posted on: June 12, 2019 by Pamela Hutchinson
Rainfall across southern Idaho this spring has been unusually high in some areas and potato herbicides may have been or are being affected. Soluble herbicides can move downward in soil profile. Availability of herbicides for uptake can increase. What is happening with your potato herbicides and why? What is happening to your weeds and potatoes and why?
» Potato_herbicide_solubility_and_movement_-_Spring_2019.pdf
Stripe rust in wheat continues to spread
Small Grains All Locations
Stripe rust
Posted on: June 11, 2019 by Juliet Marshall
Stripe rust is at low levels or can’t be found in most winter wheat fields except on the susceptible varieties including soft white winter wheat Brundage. Stripe rust is not yet present in spring wheat fields, but I suspect it will be found shortly. Susceptible and moderately susceptible spring wheat varieties should be treated with fungicides at herbicide timing (which may have already passed for many fields). With the weather very favorable for spread and infection, disease pressure in spring wheat will reduce yields and test weight in susceptible varieties!
Winter grain is heading (finishing in the Magic Valley area, mid-heading in south-Eastern Idaho (Aberdeen area), and starting to head in the Idaho Falls area). Diseases that are prevalent include Pythium, Rhizoctonia and straw breaker foot-rot. Stripe rust has been confirmed east of American Falls near the Arbon Valley exit, near the American Falls airport, Aberdeen area on-station and in production fields. Stripe rust is also present in Notus, ID area and Logan, UT. Also found in the Firth area was powdery mildew. Control recommendations for powdery mildew includes propiconazole as well as many other fungicides labeled as good to very good control. (See the fungicide efficacy chart on my website for fungicide efficacy against many of the common wheat diseases).
Ag Talk Tuesday - the latest UI Ag Talk Report
All Crops All Locations
Regional Crop Diseases
Posted on: June 11, 2019 by Juliet Marshall
Here’s what you missed at the June 4 Ag Talk Tuesday in American Falls… and other Hot Topics (See attached PDF):
NEW CALL-IN NUMBER FOR AG TALK TUESDAY SESSIONS
Have instant access to UI ag faculty and other attendees remotely during the Ag Talk Tuesday sessions. You can simply call a phone number to join the meeting, or you can click on the Zoom link below (the needed software will automatically download when you start or join your first Zoom meeting) to ask any questions you have or to share your observations with how crops are progressing and what current issues appear to be in your region.
The next Ag Talk Tuesday will be held 8:00 AM July 2 in Rexburg at Idaho AgCredit, 1586 North 2nd East.
Call-in Number: (669) 900-6833
Meeting ID: 349427773
(Optional) Zoom link: https://uidaho.zoom.us/j/349427773
Onion Thrips update 6/8/2019
All Crops All Locations
Onion thrips
Posted on: June 10, 2019 by Stuart Reitz
Hello Everyone,
There hasn’t been a tremendous increase in thrips abundance this week as insecticide programs are ramping up. The rain and wind has also helped to slow population build up. (Thrips tend not to fly in windy conditions and rain can drown or wash them off plants). Fields were checked this week in between thunderstorms on Thursday and Friday and couple on Saturday.
Highest numbers again were in larger early season varieties and in reds. The highest numbers I saw on individual plants ranged from 50 – 90 thrips. Still, those numbers have been sporadic. Other plants within the same field had as few as 1 and nearby fields with smaller plants may have few if any thrips. The bottom line is to check as many plants as possible when scouting your fields.
I have not seen any plants infected with Iris yellow spot virus (yet). Pink root symptoms have been showing up in some red onion fields. At this point, reducing stress on plants (e.g. good irrigation practices) is the best way to limit the impact of the disease.
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8
Oregon Slope/Weiser 0.03 0.04 0.06 0.15
Vale 0.15 0.55 1.64 2.60
Ontario 0.07 0.03 0.78 0.71
Nyssa 0.02 0.07 1.32 1.03
Adrian 0.02 0.22 1.60 1.67
Fruitland 0.05 0.03 0.19 0.94
Parma - 0.09 1.60 0.67
Overall Average 0.06 0.15 1.03 1.11
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8
Oregon Slope/Weiser 0.00 0.00 0.00 0.26
Vale 0.00 0.41 6.28 4.20
Ontario 0.00 0.00 3.60 1.71
Nyssa 0.00 0.02 3.56 5.52
Adrian 0.00 0.00 8.42 3.64
Fruitland 0.00 0.00 0.16 2.20
Parma - 0.00 1.97 4.37
Overall Average 0.00 0.06 3.43 3.13
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8
Oregon Slope/Weiser 0.03 0.04 0.06 0.42
Vale 0.15 0.96 7.92 6.79
Ontario 0.07 0.03 4.38 2.42
Nyssa 0.02 0.09 4.88 6.55
Adrian 0.02 0.22 10.01 5.31
Fruitland 0.05 0.03 0.35 3.14
Parma - 0.09 3.58 5.03
Overall Average 0.06 0.21 4.45 4.24
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8
Oregon Slope/Weiser 0% 4% 6% 14%
Vale 0% 31% 64% 54%
Ontario 0% 3% 34% 35%
Nyssa 0% 5% 73% 56%
Adrian 0% 19% 57% 53%
Fruitland 0% 3% 17% 50%
Parma 0% 7% 54% 41%
Overall Average 0% 10% 43% 43%
As always, please let me know if you have any questions.
**********************************************
Stuart Reitz
Malheur Experiment Station
Oregon State University
595 Onion Ave.
Ontario, OR 97914
Office: 541-889-2174
Mobile: 208-740-4381
stuart.reitz@oregonstate.edu
**********************************************
Ag Talk Tuesday - American Falls, 8:00 AM June 4, at Idaho AgCredit
All Crops All Locations
Ag Talk Tuesday
Posted on: June 3, 2019 by Juliet Marshall
Good afternoon! We will be having the next ATT meeting tomorrow morning at 8:00 AM at the Idaho AgCredit Office, 2883 ID-39, American Falls, ID.
New Call-in number for Ag Talk Tuesday sessions:
Have instant access to UI ag faculty and other attendees remotely during the Ag Talk Tuesday sessions. You can simply call a phone number to join the meeting, or you can click on the Zoom link below (the needed software will automatically download when you start or join your first Zoom meeting) to ask any questions you have or to share your observations with how crops are progressing and what current issues appear to be in your region.
Call-in: (669) 900-6833
Zoom link: https://uidaho.zoom.us/j/349427773
Attached is the summary of the last ATT discussion - what we are calling the Ag Talk Report.
Date Location Primary Topics
Hosts
June 4
Idaho AgCredit
2883 ID-39
American Falls
Early season potato issues, stand issues
Weed issues
Grain Issues
Kasia Duellman
Pam Hutchinson
Juliet Marshall
2019 Snake River Weed Research Tour, Ontario, OR
All Crops All Locations
Posted on: June 3, 2019 by Jerry Neufeld
Please mark your calendar for the 2019 Snake River Weed Research Tour
Venue: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
Date: Thursday, June 13, 2019
Registration starts at 8:00am with coffee and donuts.
Recertification credits: 3 credits – Oregon and 3 credits – Idaho for full tour attendees.
The tour will start promptly at 8:30AM and end at 12:15PM.
A complementary lunch will be served at the conclusion of the tour.
The tour will feature research studies for weed management in direct-seeded onion, sugar beet, field corn, potato, and wheat. The first stop will be at our yellow nutsedge “field laboratory” along OR Hwy 201 just after crossing the rail tracks (if headed south to Nyssa from Ontario). The stop along Hwy 201 will feature studies on yellow nutsedge control in onion, sugar beet, and field corn. We will then proceed to the station and tour studies on weed control in direct-seeded onion, field corn, potato, and wheat.
This event is open to the public. Please forward the invitation to anybody who will be interested in weed management in the mentioned crops.
We will follow up with a reminder as we get close to the tour date. We are looking forward to seeing you at the tour.
Please call 541-889-2174 or email janet.jones@oregonstate.edu if you need more information.
Kind regards,
Joel Felix
Annual University of Idaho Snake River Weed Management Tour - June 25th - Aberdeen R&E Center
Potato All Locations
Posted on: May 30, 2019 by Pam Hutchinson
Greetings;
Please mark your calendars and plan to attend the UI Snake River Pest Management Tour at the Aberdeen R&E Center on Tuesday June 25th.
Time: 8:30 to noon followed by a sponsored lunch.
Credits: Three Idaho pesticide applicator recertification credits will be offered.
Featured will be several weed control trials in potatoes, including tank mixtures, planned vs. rescue postemergence applications, chemigation vs sprinkler incorporation as well as potato variety herbicide tolerance trials, herbicide mechanism of action plots, and Litchi tomato herbicide management.
We hope to see you there.
Thanks,
Pam
p.s. This tour was originally scheduled for June 18th but due to cold rainy conditions, our potato and weed emergence has been slowed considerably
There will be no Snake River Tour at the Kimberly R&E Center this year – we plan to fire it up again in 2020!
Stripe rust in winter wheat and Spot form of net blotch in barley (SFNB)
Small Grains All Locations
stripe rust and spot form of net blotch
Posted on: May 29, 2019 by Juliet Marshall
Stripe rust has been found today in winter wheat east of American Falls. Lesions were found on leaf tips in the upper canopy of the soft white winter wheat variety …. Wait for it……
…. Brundage.
This is likely a spring infection (not overwintering) and not widespread. Yet. With current weather conditions (perfect for stripe rust infection) expect to see the disease spread rapidly. If you have susceptible winter wheat varieties (see the UI Extension Small Grains Reports and the USDA Dr. Xianming Chen’s USDA reports for variety ratings) or susceptible spring wheat varieties, timely application of fungicides should protect vulnerable fields. Fungicide mixed with herbicide applications is recommended for susceptible spring wheat varieties as well.
Please see the attached file for the fungicide efficacy of fungicides for many diseases.
PLEASE report stripe rust occurrences ASAP to me.
Also found were symptoms of spot form of net blotch (SFNB) in spring barley. This field was in barley after barley. Fungicide with herbicide should reduce SFNB impact and stop the spread into the upper canopy.
Ag Talk Tuesday Newsletter and schedule
All Crops All Locations
Posted on: May 15, 2019 by Juliet Marshall
The newsletter reports on the first Ag Talk Tuesday held last week in Blackfoot, and provides the schedule for the rest of the ATT events for the summer.
Cull Potato Management
Potato All Locations
cull potato managment
Posted on: May 13, 2019 by Kasia Duellman
The Idaho State Department of Agriculture requires cull potatoes from all potato operations to be rendered non-viable on a daily basis after April 15th in western Idaho and after May 15th in eastern Idaho. Dr. Kasia Duellman, UI CALS Extension Seed Potato Specialist has provided additional information about cull potato management. Click of the pdf below for additional information.
sugarbeet root maggot, 2019
Sugarbeets All Locations
Posted on: April 29, 2019 by Jerry Neufeld
The growing degree day calculator (gdd) (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugarbeet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 295 gdd since January 1, 2019 and 263 gdd in the Magic Valley. Peak flight of root maggot flies should occur after 360 accumulated gdd when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be about May 7, in the Magic Valley this will be about May 12. The gdd model does an excellent job of predicting peak flight, but monitoring with orange sticky stake traps is the best way to get local information on fly numbers for a given field to determine if you have the threshold numbers of flies.
Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. The optimal timing for applying granular insecticides against root maggots is within 10 days of peak flight. Granular insecticides must be watered in well to get good uptake by the sugarbeets. The link below from the 2019 PNW Insect Management handbook contains additional information about the sugarbeet root maggot. Visit with your field consultant from TASCO for treatment options.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
Weekend Weather Favored Fire Blight Development
Landscape and Garden All Locations
Fire Blight
Posted on: April 23, 2019 by Maria Held
Weather conditions over the past weekend (rain and higher temperatures) were favorable for fire blight as pear and apple trees are blooming. This bacterial disease affects the rose plant family (Rosaceae ).
Temperatures over 70 F and moisture (rain, dew) foster fire blight development.
Monitor trees closely starting two weeks after full bloom (which is when infections start to become visible). Prune out new infections immediately (on a dry day).
Refer to the references below for additional information:
» https://pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-fire-blight
» http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
World Potato Congress Webinar: “Best Management Practices for Seed Potato Handling from Storage to Planting”
All Crops All Locations
Posted on: April 10, 2019 by Jeff Miller
World Potato Congress Inc. Offers its Third Webinar with Dr. Gary Secor Presenting: “Best Management Practices for Seed Potato Handling from Storage to Planting”.
The World Potato Congress (WPC) is very pleased to be offering its third webinar in its 2019 series with Dr. Gary Secor. Dr. Secor is a Professor in the Department of Plant Pathology at North Dakota State University in Fargo, North Dakota, USA. He received his Bachelor’s and Master’s Degrees from Montana State University, and his PhD from the University of California-Davis. He has worked with numerous potato diseases, concentrating in recent years on new disease discovery, potato late blight, zebra chip, fungicide resistance management in pathogens of potatoes and sugar beet, seed treatment, variety development, Fusarium diseases, bacterial soft rot, blemish diseases and post-harvest diseases.
Dr. Secor is the recipient of numerous awards, including the Dahl Excellence in Research from NDSU, Inspiring Teacher from NDSU, Meritorious Service Award from the Northern Plains Potato Growers Association, Distinguished Service Award from the Sugar Beet Industry of MN and ND, Meritorious Service Award from the National Potato Council, Honorary Life Membership from the Potato Association of America, Distinguished Service Award from the Potato Association of Chile, Distinguished Service Award from the American Society of Sugar Beet Technologists, and 2018 WPC Industry Award.
Dr. Secor’s presentation “Best Management Practices for Seed Potato Handling from Storage to Planting” will be live on April 25, 2019 at 08:00 a.m. Central Standard Time. The purpose of this webinar is to provide best management practices for selection and handling of seed potatoes from storage to planting to maximize seed potato performance in the field for quality and yield. This presentation will discuss factors affecting seed potato growth, how to select quality seed potatoes, and the importance of proper handling of seed potatoes during loading, transport, unloading and pre-plant storage. It will also discuss preparation of seed for planting, whether to use whole seed or cut seed, seed cutting and considerations for using of dust and liquid seed treatments. Descriptions of important early season diseases will be presented with suggestions for management by cultural and fungicide practices. This webinar will be valuable to seed growers, but it will be particularly valuable to anyone who buys and plants seed potatoes.
The host for the WPC webinar series will be WPC Director, Dr. Nora Olsen (norao@uidaho.edu).
Interested participants can register and will be able to interact with the presenters of the webinar. To register in advance for this webinar:
https://zoom.us/webinar/register/WN_m2OyZ_UIShGmOEdFWZU-aA. Following your registration, you will receive a confirmation email containing information about how to join the webinar.
The webinars will be recorded and therefore, those who are unable to join us live can view these webinars via the WPC website www.potatocongress.org until December 31, 2019.
Please also mark your calendars for WPC’s fourth webinar with Cedric Porter. Mr. Porter is the Editor of Brexit Food & Farming, a unique monthly briefing tracking and analysing the impact of Brexit on the food and farming industries. Mr. Porter also co-edits World Potato Markets, a weekly briefing on global potato production, trade and prices. Mr. Porter webinar’s presentation will be: “World Potato Output and Trade” on May 14, 2019 at 09:00 Eastern Standard Time.
WPC looks forward to interacting with you during this initiative. We welcome all your feedback via info@potarocongress.org.
» https://zoom.us/webinar/register/WN_m2OyZ_UIShGmOEdFWZU-aA
Cull Onion Disposal Deadline for Onion Maggot Control - March 15
Onion All Locations
Onion Maggot
Posted on: March 13, 2019 by Stuart Reitz
The deadline for disposal of cull onions for Malheur County and Ada, Canyon, Gem, Payette, Owyhee and Washington counties in Idaho is March 15.
All cull or waste onions are required to be disposed of properly by March 15.
For cull onions produced after the March 15 deadline until July 1, the Control Orders require cull be disposed of properly within one week for proper disposal.
Please remember to keep trucks covered to avoid onions spilling onto roadways.
Please see the attached letter or the link below for more information from ODA and ISDA.
» https://agri.idaho.gov/main/cull-onion-disposal-deadline-approaching/
2019 Miller Research Potato Pest Management Meeting Handouts
Potato All Locations
Posted on: March 11, 2019 by Jeff Miller
Presentation handouts from the 2019 Miller Research Potato Pest Management Meeting Handouts are now available at MillerResearch.com (see the link below.)
» https://millerresearch.com/2018/11/mr-potato-pest-management-workshop-2-2/
Malheur Pest Management Short Course - Update
Announcements All Locations
Posted on: February 12, 2019 by Christy Tanner
This course has been approved for credits in both OR and ID
OR: 4 core, 2 aerial and 6 other credits
ID: 9 credits
The Malheur Pest Management Short Course is Feb 19 and 20 at the Four Rivers Cultural Center in Ontario. There are pesticide license credits for Oregon and Idaho. Click on the pdf below for more information.
Worker Protection Standard Training in Ontario, OR on March 5th
All Crops All Locations
Posted on: February 12, 2019 by Christy Tanner
If you have questions about the Worker Protection Standard (WPS) or have employees who will handle pesticides, these training sessions are for you!
Tuesday, March 5th at the Malheur County Extension Office
710 SW 5th Ave, Ontario, OR
For agricultural employers:
9 am to 11 am
WPS Training for Ag Employers
If you are an agricultural employer this training will help you understand and meet the requirements under the worker protection standard.
2 ODA credits available
For agricultural employees:
12 pm to 2 pm:
WPS Training for pesticide Handlers in English
Annual WPS Training Cards
2 pm to 4 pm:
WPS Training for pesticide Handlers in Spanish
Annual WPS Training Cards
Cost:
$25 per person per session
Registration:
Visit https://emt.oregonstate.edu/psep/ontario-training
or call 541-737-4197
Malheur Pest Management Short Course
Announcements All Locations
Posted on: February 7, 2019 by Jerry Neufeld
The Malheur Pest Management Short Course is Feb 19 and 20 at the Four Rivers Cultural Center in Ontario. There are pesticide license credits for Oregon and Idaho. Click on the pdf below for more information.
2019 Soil Health Symposium
Announcements All Locations
Posted on: February 6, 2019 by Jerry Neufeld
The 2019 Soil Health Symposium will be held on February 14 at the Four Rivers Cultural Center. Click on the pdf below for more information.
2019 Miller Research Potato Pest Management Meeting
Potato All Locations
Posted on: January 22, 2019 by Jeff Miller
Miller Research LLC will hold its annual potato pest management seminar Thursday, January 31, 2019, at the Historic Wilson Theater in Rupert (610 Fremont St).
Three CCA (Pest Management) credits and three Idaho Pesticide Recertification will be available. Please RSVP to Cheryn Clayton at cheryn@millerresearch.com.
The cost to attend the meeting is $10 and can be paid by check, cash, or credit card. After covering meeting costs, remaining funds will be donated to 4H.
We will provide snacks for the morning, but we are not providing lunch.
More information can be found in the attachment and at MillerResearch.com
» http://millerresearch.com/event/miller-research-potato-pest-management-workshop/
FSMA - Produce Safety Rule Grower Training Course
All Crops All Locations
Posted on: January 8, 2019 by Stuart Reitz
PSA Grower Training Course
February 12, 2019
7:30 am (check-in). Program 8 am – 5 pm
Clarion Inn Ontario
1249 Tapadera Ave
Ontario, OR 97914
The Oregon Department of Agriculture and OSU Extension are offering a Produce Safety Rule Grower Training on February 12 at the Clarion Inn in Ontario, OR.
Register online at: https://www.eventbrite.com/e/produce-safety-alliance-psa-grower-training-tickets-53020538859
The Produce Safety Rule requires that one representative from each covered farm receive training accredited by the FDA. Currently, Produce Safety Alliance (PSA) trainings are the only standardized national training program approved by FDA.
To determine if your farm is covered by the Produce Safety Rule, please use this online tool:
https://www.surveygizmo.com/s3/4175746/FSMA-Produce-Safety-Rule-are-you-covered
The grower training course will provide a foundation of Good Agricultural Practices (GAPs) and co-management information, FSMA Produce Safety Rule requirements, and details on how to develop a farm food safety plan. Individuals who participate in this course are expected to gain a basic understanding of:
• Microorganisms relevant to produce safety and where they may be found on the farm
• How to identify microbial risks, practices that reduce risks, and how to begin implementing produce safety practices on the farm
• Parts of a farm food safety plan and how to begin writing one
• Requirements in the FSMA Produce Safety Rule and how to meet them.
After attending the entire course, participants will be eligible to receive a certificate from the Association of Food and Drug Officials (AFDO) that verifies they have completed the training course. Participants must be at least 14 years of age to receive the AFDO certificate. To receive an AFDO certificate, a participant must be present for the entire training and submit the appropriate paperwork to their trainer at the end of the course.
These are national standards, so growers can take the training outside of their home state.
Questions?
Call Chantal Pettit at 503-986-4630 or email cpettit@oda.state.or.us
» https://www.eventbrite.com/e/produce-safety-alliance-psa-grower-training-tickets-53020538859
» https://www.surveygizmo.com/s3/4175746/FSMA-Produce-Safety-Rule-are-you-covered
Vector Borne Disease Workshop
All Crops All Locations
Posted on: January 4, 2019 by Jerry Neufeld
The Center for Health in the Human Ecosystem at the University of Idaho is organizing a 6-day course (June 23-28, 2019) on Biology of Vector Borne Diseases, with focus on both animal and plant systems. Click on the pdf below for more information.
Idaho Horticulture Expo
Landscape and Garden All Locations
Posted on: December 11, 2018 by Maria Held
INLA Conference:
The Idaho Nursery & Landscape Association conference will be held January 16-18, 2019 at the Boise Centre.
» https://inlagrow.org/resources/Documents/Event%20Documents/Seminars%20and%20descriptions%202019.pdf
Canyon County Master Gardener Program 2019
Announcements All Locations
Posted on: November 27, 2018 by Dian Roberson
The Canyon County Master Gardener Program is now accepting applications for the 2019 Master Gardener Class! For more information contact the Canyon County Extension Office at 501 Main St., Caldwell, ID 83605; 208-459-6003; or ccmg@uidaho.edu
2019 Miller Research Potato Pest Management Seminar
All Crops All Locations
Posted on: November 12, 2018 by Jeff Miller
Miller Research LLC will hold its annual potato pest management seminar on Thursday, January 31, 2019, at the Historic Wilson Theater in Rupert, ID (610 Fremont St.). Registration will begin at 8:30 and the meeting will run from 9:00 am to 12:15 pm. More details will be posted at a later date.
Peach Leaf Curl Spray
Landscape and Garden All Locations
Taphrina deformans
Posted on: October 31, 2018 by Maria Held
If you experienced peach leaf curl on your trees this spring it is time for treatment when most of the leaves are off the tree. Resistant varieties are a good option for home gardeners.
» https://pnwhandbooks.org/plantdisease/host-disease/peach-prunus-persica-leaf-curl
» https://extension.usu.edu/files/publications/factsheet/peach-leafcurl.pdf
2018 Idaho Association of Plant Protection Annual Meeting Final Agenda
All Crops All Locations
Posted on: October 30, 2018 by Jeff Miller
The finalized agenda for the 2018 Idaho Association of Plant Protection is attached here. The meeting is November 7 and 8 at the Canyon Crest Event Center in Twin Falls. Registration begins at 12:30 on Wednesday, Nov. 7 and the meeting begins at 1:00. The cost to attend is $15 whether you attend one or both days and can only be paid via cash or check. The meetings run from 1:00-5:00 pm on Wednesday and from 8:00-12:00 pm on Thursday.
A total of 3.5 CCA credits and 4 ISDA credits are available each day. You must attend the entire day to get the credits for that day. Please contact James Woodhall at jwoodhall@uidaho.edu if you have any questions.
Idaho Ag Outlook Seminar - 2018
All Crops All Locations
Posted on: October 30, 2018 by Jerry Neufeld
Click on the pdf below for information about the Idaho Ag Outlook presented by University of Idaho CALS Extension and Research faculty. The locations are Idaho Falls, Burley and Caldwell from December 11 to 13.
2018 Idaho Association of Plant Protection Annual Meeting
All Crops All Locations
Posted on: October 15, 2018 by Jeff Miller
The 2018 Idaho Association of Plant Protection will hold its annual meeting Wednesday, November 7 (1:00-5:10) and Thursday, November 8 (8:00-12:00) at the Canyon Crest Dining and Event Center in Twin Falls, ID (330 Canyon Crest Drive, Twin Falls, ID). Registration will begin at 12:00 on Wednesday. The agenda is included in the attachment to this post.
The cost for this meeting is $15 payable by check or cash. Hotel reservations if needed must be made on your own.
Certified Crop Advisor (CCA) and Idaho State Pesticide credits have been requested.
IAPP chairs for 2018 are James Woodhall and Kelly Luff.
Final 2018 psyllid monitoring update
Potato All Locations
Potato Psyllid
Posted on: October 5, 2018 by Lucy Standley
This week we collected 2 psyllids from sticky traps in one intense field in Twin Falls County. We only had traps deployed in 2 fields given that all of the other fields in the monitoring program had been vine killed or harvested.
One of the psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. This is only the third psyllid this season to test positive, and this year still has shown the lowest overall incidence in Lso for any season we have been monitoring. Nevertheless, this finding underscores the importance of maintaining an IPM program through the end of the season. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.
This week’s report concludes the University of Idaho psyllid/Lso monitoring program. We will only provide an update next Friday if we detect Lso in the psyllids collected this week.
Thanks to all of the growers, crop consultants, and other industry folks who contributed to this work.
A summary of this year’s results is expected to be presented at the Idaho Association of Plant Protection meeting in Twin Falls in November and at the Idaho Potato Conference.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid update 28 September 2018
Potato All Locations
Potato Psyllid
Posted on: September 28, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields) and Twin Falls (1 field).
This week, we collected 9 psyllids from sticky cards (across 4 intense sites).
Most of the 95 fields that were in the monitoring program have been vine killed or harvested. We had traps deployed in all 6 of the remaining fields and found psyllids in 4 of them (66.7%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence has been considerably lower than in all previous years. Nevertheless, we urge growers and crop consultants to maintain their IPM programs. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.
“Heat maps” of this week’s results will not be made given that the low number of sites remaining tends to result in skewed maps.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid update 21 September 2018
Potato All Locations
potato psyllids
Posted on: September 21, 2018 by Erik Wenninger
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Jerome (1 field), and Twin Falls (1 field).
This week, we collected 40 psyllids from sticky cards (across 6 intense sites and 0 light sites). We also collected a few eggs and nymphs in leaf samples at two sites in Canyon County; when we have found immature psyllids in the past, they have typically occurred very late in the season as is the case here.
Most of the 95 fields that were in the monitoring program have been vine killed or harvested. We had traps deployed in all 14 of the remaining fields and found psyllids in 6 of them (43%). There are now just a handful of fields being monitored for next week’s report.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence has been considerably lower than in all previous years. Nevertheless, we urge growers and crop consultants to maintain their IPM programs. We have found that ZC can develop in tubers that were inoculated with Lso-positive psyllids as late as 2 weeks (and in rare cases 1 week) before vine kill.
“Heat maps” of this week’s results will not be made given that the low number of sites remaining tends to result in skewed maps.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Call for Topics for the 2019 Idaho Potato Conference
Potato All Locations
Posted on: September 17, 2018 by Kasia Duellman
This is the first call for topics for the 2019 Idaho Potato Conference that will take place in Pocatello on January 23 and 24, 2019 (Note: the ICIA Seed Seminar will be held the day before, as usual - January 22, and you are welcome to submit ideas for Seed Seminar as well).
Please provide your ideas for potential workshops and presentations for this year's conference to Kasia Duellman (kduellman@uidaho.edu) or Pam Hutchinson (phutch@uidaho.edu) by September 25th so we can put together a preliminary list for a program planning meeting to be held at a date in early October to be determined.
Psyllid update 14 September 2018
Potato All Locations
Potato Psyllid
Posted on: September 14, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Twin Falls (2 fields), and Cassia (6 fields).
This week, we collected 84 psyllids from sticky cards (across 7 light sites and 5 intense sites).
Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 26 of the remaining fields and found psyllids in 12 of these 26 fields (46.2%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
With so few sites still being monitored this late in the season, it is possible that the heat maps may appear a bit skewed.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Psyllid update 7 September 2018
Potato All Locations
Potato Psyllid
Posted on: September 7, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (2 fields), Twin Falls (1 field), and Cassia (4 fields).
This week, we collected 19 psyllids from sticky cards (across 4 light sites and 3 intense sites).
We had traps deployed in all 32 of the 32 fields (100%) monitored and found psyllids in 7 of the monitored fields (21.8%). 63 of the 95 total fields that we were sampling have been vine-killed.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Idaho Association of Plant Protection 2018 Annual Meeting
All Crops All Locations
Posted on: September 5, 2018 by Jeff Miller
This is an invitation and call for papers for the 2018 annual meeting of the Idaho Association of Plant Protection in Twin Falls, ID at the Canyon Crest Dining and Event Center. The conference will cover all aspects of plant protection including entomology, nematology, weed science and plant pathology.
Please consider contributing research results, observations, unusual pest and disease occurrences, and topics which could be discussed as a group, etc. to the meeting. Each presentation will be allotted at least a 20-minute time slot. A final program will be advertised in October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations must be made on your own.
Please see the attached sheet to submit a topic for presentation.
Psyllid update 31 August 2018
Potato All Locations
Potato Psyllid
Posted on: August 31, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Owyhee (2 fields), Elmore (1 field), Payette (1 field), Jerome (1 field) Twin Falls (2 fields), and Cassia (1 field).
This week, we collected 34 psyllids from sticky cards (across 13 light sites and 4 intense sites).
We had traps deployed in all 89 of the 89 fields (100%) monitored this year and found psyllids in 17 of the monitored fields (19.1%). Six of the 95 total fields that we were sampling have been vine-killed.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Unmanned Aerial Vehicle (UAV) field demonstration
All Crops All Locations
Posted on: August 30, 2018 by Olga Walsh
Date, time: September 13, 2018 9 am – 12 noon
Location: Reggear Tree Farm, 1415 Shortcut Rd, Craigmont, ID 83523
Come learn about how drones can be used in agriculture, crop production, nursery industry and more. University of Idaho specialists will share their latest research and answer questions related to UAVs.
Please forward to those who may be interested.
Thank you to our host: Mr. Bob Reggear!
Organizing committee: Dr. Olga Walsh, Dr. Esmaeil Fallahi, Dr. Sanaz Shafian
This event is funded by: Idaho Department of Agriculture, Idaho Nursery & Landscape Association, University of Idaho Extension, Idaho Agricultural
Experiment Station
Contact information: Olga Walsh, Assistant Professor, Cropping Systems Agronomist, University of Idaho, Parma R&E Center, owalsh@uidaho.edu
Psyllid update 24 August 2018
Potato All Locations
Potato Psyllid
Posted on: August 24, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Elmore (1 field), Twin Falls (2 fields), and Cassia (1 field).
This week, we collected 30 psyllids from sticky cards (across 9 light sites and 5 intense sites).
We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 14 of the monitored fields (14.7%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Malheur Experiment Station Onion Variety Day August 28
All Crops All Locations
Posted on: August 21, 2018 by Janet Jones
You are invited to the Malheur Experiment Station Onion Variety Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
in the field off Onion Avenue under the canopy.
Date: Tuesday, August 28, 2018
Registration starts at 9:00am with donuts and refreshments.
A complimentary lunch will be served at noon.
Click on the PDF below for the Flyer.
Please RSVP for lunch or if you need more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
Psyllid update 17 August 2018
Potato All Locations
Potato Psyllid
Posted on: August 17, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Payette (1 field), Twin Falls (3 fields), Jerome (1 field), Cassia (1 field), and Bannock (1 field).
This week, we collected 36 psyllids from sticky cards (across 12 light sites and 4 intense sites).
We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 16 of the monitored fields (16.8%). However, we are still waiting to receive card data from 4 sites.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years. Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Ag Talk Tuesday! -- Special presentation on Market outlook and break-even prices, by Ben Eborn, UI
All Crops All Locations
Posted on: August 10, 2018 by Juliet Marshall
Greetings:
You are invited to join University of Idaho Extension personnel and fellow growers, fieldmen, agronomists, and industry reps to discuss current issues in crop production.
When: August 21, 7AM to 8:30AM
Where: Perkins, Pocatello (1600 Pocatello Creek Rd) - BANQUET ROOM
Topics include:
-- Special presentation on Market outlook and break-even prices, by Ben Eborn, UI Extension Ag Economist
-- Harvest update
-- UI Spore Trap Update
For convenience, selected breakfast options will be available for purchase (optional).
Questions can be directed to one of the Organizers:
Kasia Duellman, U of I Extension Seed Potato Specialist, kduellman@uidaho.edu
Pam Hutchinson, U of I Extension Weed Specialist, phutch@uidaho.edu
Juliet Marshall, U of I Extension Cereals Specialist, jmarshall@uidaho.edu
Please feel free to forward this invitation to your colleagues, and the attached PDF file is available for your convenience to print and display or distribute.
Sincerely,
Kasia
----------------------------------------------------------------------------
Kasia M. Duellman, PhD
Assistant Professor and Extension Seed Potato Specialist
University of Idaho - Idaho Falls REC
1776 Science Center Drive, Suite 205
Idaho Falls, Idaho 83402
Psyllid update 10 August 2018
Potato All Locations
Potato Psyllid
Posted on: August 10, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Payette (1 field), Twin Falls (1 field), Jerome (1 field), Cassia (3 fields), Minidoka (1 field), Power (1 field), and Oneida (1 field).
This week, we collected 36 psyllids from sticky cards (across 15 light sites and 4 intense sites).
We had traps deployed in all 95 of the 95 fields (100%) monitored this year and found psyllids in 19 of the monitored fields (20%). However, we are still waiting to receive card data from 3 sites.
This week we also collected one psyllid from vacuum sampling in one Canyon county field.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Although psyllid numbers continue to be relatively low thus far this year, we are now starting to see a few more captures in eastern Idaho. With only two Lso-positive psyllids found to date, percent incidence is currently considerably lower than in most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
“Heat maps” of this week’s results will be included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
» http://www.uidaho.edu/cals/potatoes/news
Raspberry Cane Damage
All Crops All Locations
Rose Stem Girdler
Posted on: August 8, 2018 by Maria Held
Rose Stem Girdler damage has been observed in raspberries. The canes wilt from the top or break at the girdling site. Cut the stem at ground level and destroy infested canes
» https://extension.usu.edu/productionhort/files-ou/RoseStemGirdler.pdf
» https://utahpests.usu.edu/ipm/agricultural/fruit/rose-stem-girdler
» http://oregonstate.edu/dept/nurspest/rose_stem_girdler.html
Coddling Moth (3rd Generation!)
All Crops All Locations
Posted on: August 8, 2018 by Dian Roberson
Based on Degree Day Models, we will have a third generation of coddling moths this year! Stay vigilant. Practice good sanitation by removing and disposing of young damaged fruit.
» https://pnwhandbooks.org/insect/tree-fruit/apple/apple-codling-moth
Psyllid update 3 August 2018
Potato All Locations
potato psyllids
Posted on: August 3, 2018 by Erik Wenninger
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (12 fields), Cassia (1 field), Jerome (1 field), Payette (1 field), and Twin Falls (2 fields).
This week, we collected 32 psyllids from sticky cards (across 11 light sites and 6 intense sites).
We had traps deployed in all 96 of the 96 fields (100%) monitored this year and found psyllids in 17 of the monitored fields (17.7%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers continue to be relatively low thus far this year. With only two Lso-positive psyllids found to date, percent incidence is currently lower than what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
Included on the PNW Pest Alert version of this update (http://www.pnwpestalert.net/) is a “heat map” of this week’s results (only for the western half of the state; we captured only one psyllid in the eastern half this week). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid update July 27, 2018
Potato All Locations
Potato Psyllid
Posted on: July 27, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (11 fields), Cassia (1 field), Minidoka (1 field), Payette (1 field), and Twin Falls (1 field).
This week, we collected 30 psyllids from sticky cards (across 13 light sites and 2 intense sites).
We had traps deployed in 96 of the estimated 96 fields (100%) monitored this year and found psyllids in 15 of the monitored fields (19.8%). However, we are still waiting to receive cards from 13 sites.
Testing of last week’s psyllids for Lso has been delayed due to the Potato Association of America meeting this week.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid update July 20, 2018
Potato All Locations
Potato Psyllid
Posted on: July 20, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Cassia (3 fields), Elmore (1 field), Minidoka (2 fields), Payette (1 field), and Twin Falls (2 fields).
This week, we collected 29 psyllids from sticky cards (20 light sites and 9 intense sites).
We had traps deployed in 93 of the estimated 96 fields (96%) that will be monitored this year and found psyllids in 19 of the monitored fields (20.4%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Second Lso-positive potato psyllid this year
Potato All Locations
Potato Psyllid
Posted on: July 13, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (8 fields), Cassia (3 fields), Owyhee (1 field), Jerome (2 fields), and Twin Falls (3 fields).
This week, we collected 31 psyllids from sticky cards (13 light sites and 4 intense sites).
We had traps deployed in 92 of the estimated 96 fields (96%) that will be monitored this year and found psyllids in 17 of the monitored fields (18.5%).
One psyllid collected last week in Canyon County tested positive for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Fusarium Head Blight in winter wheat
Small Grains All Locations
Fusarium head blight
Posted on: July 11, 2018 by Juliet Marshall
Fusarium head blight (FHB or head scab) is being found in winter wheat and spring wheat.
Fields throughout southern and southeast Idaho are being affected by FHB, everywhere from Glenn’s Ferry through Firth. Some winter wheat fields have white heads caused by take all as well as partial to whole heads bleached by FHB. While it is unlikely that there are any fields still in the vulnerable stages (flowering), at risk fields should be protected with appropriate fungicide application. Fields should still be scouted and infected grain fields identified prior to harvest. DON (deoxynivalenol or vomitoxin) contaminated, infected seed and tombstone kernels can be reduced by increasing the fan speeds on the combine. This can significantly reduce dockage and rejection at the elevator.
Malheur Experiment Station Field Day July 11
All Crops All Locations
Posted on: July 9, 2018 by Janet Jones
You are invited to the Malheur Experiment Station Summer Farm Festival and Annual Field Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
Date: Wednesday, July 11, 2018
Registration starts at 8:00am with coffee and donuts
Click on the PDF below for the tour descriptions and schedule.
Also featured:
- Agricultural trade show booths!
- Program for youth starting at 9:30!
- Different events and contests with prizes!
A complimentary lunch will be served at noon.
For more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
2018 Miller Research Potato Pest Management Field Day
All Crops All Locations
Posted on: July 6, 2018 by Jeff Miller
Miller Research will be holding its annual pest management field day on Tuesday, August 14 at the Miller Research facility located near Acequia, ID (426 E 200 N). A short presentation will be given in the office followed by a tour of the research plots. Trials to be highlighted include research on pink rot and Pythium leak, Rhizoctonia canker and Fusarium dry rot, fumigation methods for Verticillium control, foliar disease management, virus symptoms in the field and storage, and potato bruise management.
The presentations will focus on fungicide management of diseases and will highlight research which has been funded by the Pacific Northwest Potato Research Consortium. Three (3) ISDA pesticide recertification credits and three CCA (Pest Management) credits have been requested.
The tour will run from 9:00 to 12:00. Lunch will then be provided.
There is no cost to attend, but please respond to Cheryn Clayton by August 6 at (208) 531-5124 or cheryn@millerresearch.com if you are planning on attending.
» http://www.millerresearch.com/alerts/research-news/item/66-potato-disease-tour
First Lso-positive potato psyllid
Potato All Locations
Potato Psyllid
Posted on: July 6, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Owyhee (2 fields), Gooding (1 field), and Twin Falls (1 field).
This week, we collected 13 psyllids from sticky cards (7 light sites and 1 intense site).
We had traps deployed in 93 of the estimated 97 fields (95%) that will be monitored this year and found psyllids in 8 of the monitored fields (8.6%). However, we are still waiting to receive cards from 8 sites.
One psyllid collected last week in Canyon County tested positive for Lso (liberibacter), the bacterium that causes zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Herbicide Damage to non target plants.
Landscape and Garden All Locations
Herbicide damage
Posted on: July 3, 2018 by Rich Guggenheim
We are seeing considerable damage to plants consistent with broad leaf herbicides being misapplied. Always read and follow all label instructions. It is against the law to use pesticides in a manner inconsistent with label instructions.
Click the links below to learn how to diagnose and prevent herbicide damage.
» https://www.extension.purdue.edu/extmedia/id/id_184_w.pdf
» http://herbicidesymptoms.ipm.ucanr.edu/HerbicideDamage/
» https://hortnews.extension.iastate.edu/2018/06/preventing-herbicide-injury-landscape
Curly Top Virus in Solanacea Plants
Landscape and Garden All Locations
BCTV
Posted on: July 2, 2018 by Rich Guggenheim
BCTV affects Beets, tomatoes, peppers, beans, potatoes, spinach, cucurbits, many ornamentals, and weeds such as Russian thistle (tumbleweed) and mustard. It is spread by the Beet leafhopper (Circulifer tenellus). There are no chemicals available for controlling the virus. Management foci include:
Plant virus-free transplants
Control weeds and insects
Remove infected plants
Cage young plants in home gardens. Good sanitation practices, such as weed and insect control, are also essential in limiting the occurrence of the disease. Home gardeners may also consider planting susceptible hosts, such as tomatoes and peppers, in a slightly shaded part of the garden, as leafhoppers prefer to feed in sunny locations
» http://utahpests.usu.edu/uppdl/files-ou/factsheet/curly-top-tomato08.pdf
» http://ipm.ucanr.edu/PMG/r783102011.html
Squash Bug confirmed in 2018 squash.
Landscape and Garden All Locations
Anasa tristis
Posted on: June 30, 2018 by Rich Guggenheim
Squash bugs have been confirmed in the Treasure Valley.
It attacks all cucurbits and vine crops but is most damaging to squashes and pumpkins. The insect has a disagreeable odor when crushed and is one of many insects known by the nickname "stink bug."
They may be difficult to see because their color matches the soil and because they are usually hiding under the vines, leaves or clods of dirt. The adults feed on sap from the plant leaves as they lay clusters of a dozen of more, large, brick-red to yellow-brown eggs on the lower sides of the leaves.
Handpick and discard egg clusters and nymphs as they appear. Use garden insecticides such as Sevin, permethrin or insecticidal soap according to label directions. Sprays are generally more effective than dusts, but must be reapplied frequently. Avoid spraying plants in bloom. If spraying during bloom is necessary, spray at night after honey bees have quit foraging for the day.
» https://extension.usu.edu/juab/ou-files/ENT-120-08.pdf
» http://extension.colostate.edu/topic-areas/insects/squash-bug-management-in-home-gardens-5-609/
Psyllid abundance remains relatively low
Potato All Locations
Potato Psyllid
Posted on: June 29, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (6 fields), Owyhee (1 field), and Twin Falls (2 fields).
This week, we collected 16 psyllids from sticky cards (8 light sites and 1 intense site).
We had traps deployed in 85 of the estimated 97 fields (87%) that will be monitored this year and found psyllids in 9 of the monitored fields (10.5%). However, we are still waiting to receive cards from 4 sites.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Thus far, psyllid abundance has been relatively low this year; however, potato psyllid abundance typically increases during July through August.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Peach Tree Borer 2018
Landscape and Garden All Locations
Peach Tree Borer
Posted on: June 29, 2018 by Dian Roberson
We have been finding Peach Tree Borers in our traps! They will attack peach, cherry, plum, and other stone fruits. It is the larva that does the most damage, feeding on the tree roots. Check out the information below!
» https://pnwhandbooks.org/insect/tree-fruit/peach-nectarine/peach-nectarine-peachtree-borer
» http://extension.colostate.edu/topic-areas/insects/peach-tree-borer-5-566/
Cercospora Leaf Spot - 2018
Sugarbeets All Locations
cercospora leaf spot
Posted on: June 25, 2018 by Jerry Neufeld
According to Dr. Oliver Neher, from AMSCO, it is time to scout sugarbeet fields for Cercospora Leaf Spot. Temperatures are increasing, rows are closing and irrigation is intense right now. In the next couple of days we could see the average night time temperatures reaching 60 F and with ongoing irrigation we are creating favorable conditions for CLS. Favorable conditions for CLS are when the average night time temperature is above 60 degrees Fahrenheit with 90 percent relative humidity or above for 5 hours or more. Start treating when there are 5 spots average on 50-100 leaves.
Initially focus your scouting on areas with persistent leaf wetness (overlapping handlines and pivots, or areas with increased soil moisture) and known CLS problem areas or close to previous CLS fields. With the increase of fungicide resistance it is very important to use proper chemistry rotation and the addition of a copper product. However, remember copper and glyphosate don’t mix. It is best to consult your Field Consultant from AMSCO before making any treatments.
powdery mildew in sugarbeets - 2018
Sugarbeets All Locations
powdery mildew
Posted on: June 24, 2018 by Jerry Neufeld
Powdery mildew has been found by a Simplot Crop Consultant and confirmed by The Amalgamated Sugar Company Staff in fields near Adrian, Oregon and Parma, Idaho. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
A few more psyllids found in Treasure and Magic Valleys
Potato All Locations
Potato Psyllid
Posted on: June 22, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields), Jerome (1 field), and Twin Falls (1 field).
This week, we collected 10 psyllid from sticky cards (3 light sites and 2 intense sites).
We had traps deployed in 85 of the estimated 97 fields (87%) that will be monitored this year and found psyllids in 5 of the monitored fields (5.8%). However, we are still waiting to receive cards from 19 sites.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Spider Mite Warning
Landscape and Garden All Locations
Spider Mite
Posted on: June 22, 2018 by Dian Roberson
As temperatures rise in June be on the lookout for spider mites. They can attack a wide variety of crops and ornamentals. Look for bronzing of leaves or mite webbing. Dry, hot conditions favor all spider mites, this is why they are so important in more arid regions like the Treasure Valley. They feed more under dry conditions, as the lower humidity allows them to evaporate excess water they excrete. At the same time, most of their natural enemies require more humid conditions and are stressed by arid conditions. Plants stressed by drought can make them more nutritious to spider mites so check your irrigation systems to make sure they are functioning properly.
» https://pnwhandbooks.org/insect/hort/landscape/common/landscape-spider-mite
» http://extension.colostate.edu/topic-areas/insects/spider-mites-5-507/
UI SNAKE RIVER PEST MANAGEMENT TOURS
All Crops All Locations
Posted on: June 19, 2018 by Jerry Neufeld
The following information is provided by Dr. Pamela Hutchinson, University of Idaho Extension Specialist.
Please mark your calendars and plan to attend the UI Snake River Pest Management Tours. The first one is at Aberdeen on June 26th and the second one is at Kimberly on June 27th. Both field days start at 8:30 am with registration beginning at 8:00.
Aberdeen will feature several weed control trials in potatoes, including targeted herbicide programs in potatoes, Sonalan tank mixtures, and sulfentrazone formulation comparisons. Also, featured are herbicide mechanism of action plots, quinoa herbicide screening and Litchi tomato herbicide management.
At Kimberly, we will look at broadleaf and wild oat control in spring wheat, clover cover crop in wheat, safflower tolerance to sulfentrazone, weed control comparison between direct seeded and conventional tillage sugar beet, potato psyllid, Colorado potato beetle, aphid and wireworm management in potato, an update on the spore trapping network for early plant disease detection in potato, dry bean, sugar beet, and small grains, response of sugar beet to herbicide safener, beet leafminer control in sugar beet, weed control in dry bean, weed control in corn, and herbicide mechanism of action plots.
Both field days conclude with a sponsored lunch and pesticide recertification credits.
We hope to see you there!
Pam and Don
Don W. Morishita, Ph.D.
Superintendent, Professor of Weed Science and Extension Specialist University of Idaho | Kimberly R&E Center | 3806 N. 3600 E. | Kimberly, ID
83341 USA
Email: don@uidaho.edu | Phone: 208.423.6616 | Fax: 208.423.6631
Pamela J.S. Hutchinson
Potato Cropping Systems Weed Scientist
Aberdeen R&E Center
1693 S 2700 W
Aberdeen, ID 83210
Cell ph 208-681-1304
Office ph 397-4181 fax 397-4311
phutch@uidaho.edu
POTATO ASSOCIATION OF AMERICA MEETING
102nd Annual Meeting
July 22-26, 2018
Boise, ID
visit www.uidaho.edu/PAA2018
Ag Talk Tuesday
All Crops All Locations
Posted on: June 18, 2018 by Jerry Neufeld
The following information was provided by Dr. Pamela Hutchinson, Ag Extension Specialist with the University of Idaho.
WHAT: AG TALK TUESDAY
WHEN: JUNE 19,2018
11:30a to 1p
WHERE: THE BAY CAFE, AMERICAN FALLS
2830 Marina Rd
American Falls, ID 83211
(208) 226-2688
Potato, weed, and cereal pathology specialists have initiated "Ag Talk Tuesday" with multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status. We learn from you, too!
Please come to our third UofI Extension Ag Talk Tuesday, on June 19, from
11:30 AM to 1:00 PM.
This event is a non-host lunch where you can join UofI Ag Extension Specialists to talk about current ag production issues. We'd love to hear about what you are seeing in your fields. To help foster conversation, Drs Pamela J.S. Hutchinson, Kasia Duellman will give an update on potato diseases, insects, and weeds. Other specialists and county extension educators may also be present to help field any questions you may have or to hear about your own wisdom and experiences on what works and doesn't work on your farm.
Please join us Tuesday June 19th.
Contact Pamela J.S. Hutchinson for more information.
phutch@uidsho.edu
Future ATTs
June 26 - no ATT (Hutchinson Snake River Research Pest Management Tour - Aberdeen R and E Center 8a registration 8:30-noon tour followed by sponsored lunch.
July 3 - no ATT
July 10 - Burley (venue to be determined)
July 17 - Idaho Falls
First potato psyllid found in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 15, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields), Owyhee (1 field), and Twin Falls (1 field).
This week, we collected 6 psyllid from sticky cards (5 light sites).
We had traps deployed in 75 of the estimated 85 fields (88%) that will be monitored this year and found psyllids in 5 of the monitored fields (5.8%).
The psyllid collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Another psyllid found in Treasure Valley; none in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 8, 2018 by Lucy Standley
One potato psyllid was collected on a sticky trap in potato in the following county: Canyon (1 field).
This week, we collected one psyllid from sticky cards (1 light site).
We had traps deployed in 50 of the estimated 89 fields (56%) that will be monitored this year and found one psyllid in one of the monitored fields (2%).
The psyllid collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
First potato psyllid found in Idaho potato fields this season
Potato All Locations
Potato Psyllid
Posted on: June 1, 2018 by Lucy Standley
One potato psyllid was collected on a sticky trap in potato in the following county: Canyon (1 field).
This week, we collected one psyllid from sticky cards (1 light site).
We had traps deployed in 50 of the estimated 88 fields (57%) that will be monitored this year and found one psyllid in one of the monitored fields (1.13%).
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Scale on Honeylocust (Nampa)
Landscape and Garden All Locations
Pulvinaria innumerabilis
Posted on: May 30, 2018 by Rich Guggenheim
Cottony maple scale occasionally builds up in large numbers on branches and leaves of honeylocust, becoming quite conspicuous as egg sacs swell in June and July. The overwintering stage of this scale (mated female) can be controlled with dormant oil applications made before new growth in spring. These treatments also can help suppress spider mites, eriophyid mites and plant bugs that overwinter on trees.
Newly hatched crawlers generally appear in late June through July and can be controlled at that time with Sevin, Orthene or various pyrethroids. Imidacloprid (Merit) applied as a soil systemic treatment should also be effective, provided sites are irrigated. Natural controls generally maintain cottony maple scale at nondamaging levels and sustained infestations lasting more than one season are very rare.
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7408.html
» http://extension.colostate.edu/topic-areas/insects/insect-and-mite-pests-of-honeylocust-5-571/
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7410.html
» https://utahpests.usu.edu/uppdl/files-ou/factsheet/Soft%20Scales%20in%20Utah.pdf
2018 Potato psyllid monitoring program underway in Idaho
Potato All Locations
Potato Psyllid
Posted on: May 25, 2018 by Lucy Standley
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and currently is funded in part by USDA and generous in-kind contributions by our collaborators.
The first deployment of sticky cards occurred last week in 17 Treasure Valley sites and 21 Magic Valley sites. Next week we expect to initiate sampling in 8 and 17 additional fields in the Treasure and Magic valleys, respectively.
This week we collected our first sticky cards of the season from potato fields. No potato psyllids were found in potato fields this week.
More details on the program will be forthcoming as we continue to ramp up sampling efforts. We hope to maintain a monitoring program at a level similar to recent years, but the breadth of the program this year will depend on funding that is still pending.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
Ag Talk Tuesdays
All Crops All Locations
Cereals, Potatoes, Weeds - in the future, additional crops will be included coincident with location of ATT
Posted on: May 23, 2018 by Juliet Marshall
Potato, weed, and cereal pathology specialists are initiating "Ag Talk Tuesday" with multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status.
Details:
WHAT: Ag Talk Tuesday - no host lunch
WHEN: June 5 at 11:30 AM - 1:00 PM
WHERE: first one at Homestead Family Restaurant in Blackfoot, ID
We'd like to invite you to our first ever UofI Extension Ag Talk Tuesday, on June 5, from 11:30 AM to 1:00 PM.
The plan is to have multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status.
What: The FIRST EVER UofI Extension "Ag Talk Tuesday"
When: June 5, 11:30AM to 1:00PM
Where: Homestead Family Restaurant, 1355 Parkway Dr, Blackfoot, ID 83221 https://goo.gl/maps/GqfR7oghVNt
This event is a non-host lunch where you can join UofI Ag Extension Specialists to talk about current ag production issues. We'd love to hear about what you are seeing in your fields. To help foster conversation, Dr. Juliet Marshall will present some information on Fusarium head blight on small grains and the 2018 outlook; Dr. Pam Hutchinson will provide some tips on post-emergence herbicides; and Dr. Kasia Duellman will give an update on early season potato diseases. Juliet and Kasia will also mention the UofI Spore Trapping Network that will be fully operational by then. Other specialists and county extension educators may also be present to help field any questions you may have or to hear about your own wisdom and experiences on what works and doesn't work on your farm.
Please join us, and if you plan to attend, please RSVP to me by replying to this email or calling and leaving a message at 208-529-8376.
Future locations for Ag Talk Tuesday will be determined, to accommodate growers in different regions (we’re open to suggestions for venues and would like to rotate around eastern Idaho).
Sincerely,
Juliet
Juliet Marshall, Ph.D.
Endowed Research Professor, Cereals Pathology and Agronomy
Department of Entomology, Plant Pathology and Nematology
Idaho Falls R&E Center
1776 Science Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
208-390-4859 cell
http://www.uidaho.edu/extension/cereals/scseidaho
Fire Blight Confirmed
Apple All Locations
Erwinia Amylavora
Posted on: May 18, 2018 by Rich Guggenheim
Fire Blight has been confirmed in Canyon County. This bacterial infection can attack anything in the rose family (Rosaceae). It is especially destructive to apples (Malus spp.), pears (Pyrus spp.), and crabapples (Malus spp.). There is no cure for fire blight. Prevention is the best solution. Purchase resistant varieties, minimize rapid growth and succulent tissue, prune out blighted twigs and cankered branches. Check out the publications and websites below for more information.
http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
https://masters.agron.iastate.edu/redirect/514/lesson04/FireBlight.html
http://extension.colostate.edu/docs/pubs/garden/02907.pdf
» https://pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-fire-blight
» http://pnwpestalert.net/uploads/fire_blight.pdf
Pear Blister Mite
Tree Fruits All Locations
Eriophyes pyri
Posted on: May 9, 2018 by Rich Guggenheim
Pear leaf blister mite, Eriophyes (=Phytoptus) pyri , is an eriophyid mite found on pear, and apple. Young trees can be damaged by severe infestations.
CONTROL:
Treat large infestations in early fall, before leaf drop, when mites are migrating from leaves to buds. Options include carbaryl, horticultural oil, or lime sulfur. Dormant oil applications in spring are also effective. Blister mites cannot be treated in summer.
» http://ipm.ucanr.edu/PMG/r603400511.html
» http://oregonstate.edu/dept/nurspest/pear_leaf_blister_mite.htm
» https://utahpests.usu.edu/ipm/agricultural/fruit/blister-mites
Peach Leaf Curl
Tree Fruits All Locations
Peach Leaf Curl
Posted on: May 8, 2018 by Rich Guggenheim
Taphrina deformans
Peach leaf curl is affecting peach leaves now. Proper timing of fungicides, in the fall, can prevent this disease aLime sulfur or Ziram work great for commercial growers. Home grown trees will need something but avoid Monterey Liqui-Cop as it did not work. Ortho MAX Garden Disease Control was a little better than nothing. Bottom line for home growing - replace with a resistant tree after the current ones dies.
» https://pnwhandbooks.org/plantdisease/host-disease/peach-prunus-persica-leaf-curl
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7426.html
» https://extension.usu.edu/files/publications/factsheet/peach-leafcurl.pdf
» http://extension.oregonstate.edu/gardening/node/924
lygus bug in alfalfa seed, 2018
All Crops All Locations
lygus bug
Posted on: May 7, 2018 by Jerry Neufeld
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition shows that, depending on your location in the Treasure Valley, we have accumulated 280 to 290 degree days between January 1, 2018 and May 7, 2018. As you move west in the Treasure Valley the growing degree days increase. This is a few days ahead of 2017 and a few days ahead of the 30-year average; once again, this varies depending on your location. Peak emergence of lygus bug 1st and 2nd instar nymphs occurs right around 272 accumulated degree days; this should be about right now, and is the time monitoring for lygus bugs in alfalfa seed fields should begin.
When using most insecticides, fields should be treated when numbers of lygus bugs reach 4-5 lygus bug nymphs per 180 degree sweep. Growers using Assail, or Beleaf, as stand-alone sprays probably should treat before or just as 4th instar nymphs are detected.
Peach Tree Borer
Tree Fruits All Locations
Synanthedon exitiosa
Posted on: May 4, 2018 by Rich Guggenheim
Peach tree borer are in the clear wing moth category. They usually attack prunus trees near the ground. Signs of infestation include gumosis oozing from the trunk near the soil.
Peachtree borer eggs are laid during the summer on the bark at the base of trees. Larvae overwinter in the tree trunk near the soil line. They feed in the crown area and burrow up into the tree
» https://pestadvisories.usu.edu/2017/04/18/gummosis/
» http://extension.colostate.edu/topic-areas/agriculture/cytospora-canker-in-tree-fruit-crops-2-953/
Free Pesticide Disposal
All Crops All Locations
Posted on: April 30, 2018 by Jerry Neufeld
The Idaho State Department of Agriculture is conducting free pesticide disposals in four locations during May. Click on the pdf below for more information.
Onion thrips in Volunteer Onions
All Crops All Locations
Posted on: April 27, 2018 by Stuart Reitz
Onion thrips are starting to show up in greater numbers (both adults and immatures) on volunteer onions and other weeds. Volunteer onions serve as a host for both onion thrips and Iris Yellow Spot Virus. After a slight cool down, temperatures will be back in the 80s by the middle of next week - ideal conditions for development of thrips populations and their movement into current season onion fields.
If you have onion fields you would like included in our onion monitoring project, please contact stuart.reitz@oregonstate.edu / 541-881-1417.
Survey on Alfalfa Thrips
All Crops All Locations
Posted on: April 26, 2018 by Jason Thomas
Insect pests come and go in crops as conditions change. To learn more about the current state of thrips, a small insect that can occur in alfalfa the University of Idaho Extension service is conducting a survey about these insects. We encourage all those who work with alfalfa, including consultants to take this 3-minute survey. To thank you for your time, you will be entered into a raffle to win one of four $25 Amazon Gift Cards. Please share this with as many other farmers and consultants who work with alfalfa as possible so we can learn more about these pests.
» https://uidaho.co1.qualtrics.com/jfe/form/SV_bK1iz26kvhsmfE9
2018 Spring Garden Festival.
Announcements All Locations
2018 Spring Garden Festival. Credits available!
Posted on: April 16, 2018 by Rich Guggenheim
The University of Idaho Extension Master Gardener Volunteers are hosting their 2018 Spring Garden Festival. Happening on April 21st from 9-4 at the UI Extension Office located at 501 Main St in Caldwell, this all day event will feature 4 tracks of concurrent courses.
Cost $30.
The pesticide track will offer ISDA recertification credits.
The arboriculture track will offer ISA credits for certified arborists.
The JMG track offers professional development for teachers.
And there is a gardening 10 track for those who simply want to explore the basics.
Whether you are a beginner or an expert, this event has something to help everyone grow! There is also a free plant sale featuring plants grown by Master Gardener volunteers!
For more information, and to register, call 208-459-6003.
Potato Virus Detection Training Workshops
Potato All Locations
Posted on: April 16, 2018 by Nora Olsen
Due to the success of our Potato Virus Detection Training Workshop at Othello WA in 2016, we are hosting another set of workshops in 2018 at three locations: Othello WA, Antigo WI and Presque Isle ME. These workshops will cover field identification of PVY (strains O, N-Wi and NTN), including visual identification of foliar symptoms on 20 cultivars commonly grown in each region. Recent standardization of seed certification programs across the U.S. includes the requirement for documentation of inspector training. However, this training will also be beneficial to growers, people who rogue, and those in the potato industry in general. We expect a high attendance rate so please sign up early! Locations, dates and times are listed below. Additional details can be found on our registration page Potato Virus Detection Training Workshop Registration.
Othello, WA
Date/Time: Thursday June 21, 2018. This workshop will be integrated into the Washington State University Potato Field Day, 8:30 a.m. to 1 p.m.
Location: Washington State University Research Farm, 1471 West Cox Road, Othello, WA
You are also invited to these events held nearby:
• Tuesday June 19, Final WA Commercial Potato Seed Lot Reading for 2018, 1471 West Cox Road, Othello, WA, 8:30 a.m. to 2:30 p.m.
• Wednesday June 20, Oregon State University Potato Field Day, OSU Research and Extension Center, 2121 South 1st Street, Hermiston, OR
Antigo, WI
Date/Time: Thursday July 26, 2018, 9:30 to 11:30 a.m. in advance of the Langlade Ag Research Station County Field Day, 1 to 3:30 p.m.
Location: University of Wisconsin Langlade Agricultural Research Station, Langlade County Airport, N3689 Langlade Road, Antigo, WI
Presque Isle, ME
Date/Time: Tuesday July 10, 2018, 10 a.m. to 12 p.m. for inspectors and 2 to 4 p.m. for growers and field staff, with a rain date on Thursday July 12.
Location: University of Maine Aroostook Farm, 59 Houlton Road, US Route 1, Presque Isle, Maine
University and USDA experts will be available at each location to give you a tour and answer your questions. These workshops are part of a USDA NIFA Specialty Crops Initiative award #2014-51181-22373 titled “Biological and economic impacts of emerging potato tuber necrotic viruses and the development of comprehensive and sustainable management practices”.
To register for the event please visit Potato Virus Detection Training Workshop Registration.
For more information about the workshop please email pbg-potatovirus@cornell.edu.
Growing a great lawn! Free workshop!!!
Landscape and Garden All Locations
Green lawns!
Posted on: April 11, 2018 by Rich Guggenheim
Growing a GREAT Lawn is a free workshop being held from 9-12 at Nampa's Lakeview Park on April 14th from 10-12. Register online at the Nampa Parks and Rec website. This workshop will be taught by University of Idaho Extension horticulture professor and state Master Gardener Coordinator, Rich Guggenheim. You will learn how to grow a healthy, green lawn while cutting the need for fertilizer, pesticides, and reducing your water consumption.
Call 468-5890 for more info.
Billbugs/Lawn grub proper treatment protocols.
Landscape and Garden All Locations
Lawn Grubs
Posted on: April 10, 2018 by Rich Guggenheim
Billbugs (Sphenophorus spp) can be a problem in lawns planted with Kentucky Bluegrass (KGB). Proper timing of pesticide applications is *critical* for controlling this pest! The most common type of lawn grub found in the Treasure Valley is the Denver Billbug, although in some areas of Boise there is the Japanese Beetle, which is of special concern. Proper identification of grubs is important so that proper treatment may be applied. Management using chemical pesticides need to coincide with certain life cycles of the insect in order to be effective. You may bring a sample of the grub or adult to your local University of Extension office where they may be identified and you may obtain information on proper management of this pest. Properly fertilizing, watering, and mowing of your turf can eliminate the need to apply chemicals to your lawn to control grubs.
» http://extension.uidaho.edu/clearwater/files/2014/10/Controlling-Billbug-Grubs-in-Lawns.pdf
» https://utahpests.usu.edu/uppdl/files-ou/factsheet/Billbugs.pdf
» http://extension.colostate.edu/topic-areas/insects/billbugs-and-white-grubs-5-516/
Pear psylla
Tree Fruits All Locations
Cacopsylla pyricola
Posted on: April 7, 2018 by Rich Guggenheim
Pear psylla is one of the most serious insect pest of pears because of its ability to develop resistance to insecticides and to vector the pathogen that causes pear decline.
Adults hold their transparent wings rooflike over their dark to reddish brown bodies when at rest; they resemble tiny cicadas. A dark spot on the top middle edge of both wings helps to distinguish pear psylla from other psylla. Tiny, elongated yellowish eggs, which are barely visible without a hand lens, are laid on or near fruit spurs starting in late January or early February.
Pesticides applied to pears greatly reduce the effectiveness of natural enemies. Soft pesticide programs that spare natural enemies would reduce the need for chemical control of pear psylla and other pear pests.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=120
» http://ipm.ucanr.edu/PMG/r603301111.html
» https://extension.usu.edu/juab/ou-files/PearPsyllaCacopsyllaPyricola.pdf
» https://blogs.cornell.edu/jentsch/2015/08/06/pear-psylla-late-season-management-options/
White apple leafhopper
Tree Fruits All Locations
Homoptera: Cicadellidae
Posted on: April 7, 2018 by Rich Guggenheim
The overwintering eggs begin hatching at about the tight cluster stage of apple development, with peak hatch during or after bloom. There are five nymphal instars. It takes about 27 days for nymphs of the first generation to develop and 23 days for second generation nymphs.
» http://jenny.tfrec.wsu.edu/opm/displayspecies.php?pn=360
» https://utahpests.usu.edu/uppdl/files-ou/factsheet/white-apple-leafhoppers97.pdf
» http://ipm.ucanr.edu/PMG/r4301811.html
» https://pnwhandbooks.org/insect/tree-fruit/apple/apple-leafhopper
Fruit Orchard Leaf Rollers.
Tree Fruits All Locations
Fruit Tree Leaf Rollers
Posted on: April 7, 2018 by Rich Guggenheim
Various types of leaf rollers may cause damage to fruit trees. Begin using traps to monitor and establish bio-fix and management timing.
» https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2794&context=extension_curall
Peach Twig Borer -Anarsia lineatella
Tree Fruits All Locations
Peach Twig Borer
Posted on: April 6, 2018 by Rich Guggenheim
Peach twig borer can damage stone fruits by feeding in shoots and causing shoot strikes, or by feeding directly on the fruit. Shoot damage is most severe on the vigorous growth of young, developing trees because feeding kills the terminal growth and can result in undesirable lateral branching. As fruit matures, it becomes highly susceptible to attack; damage is most likely to occur from color break to harvest. Twig borer larvae generally enter fruit at the stem end or along the suture and usually feed just under the skin.
Adults from the overwintered generation usually begin emerging in April or early May. First generation larvae usually develop in twigs during May and June and give rise to the next flight of moths in late June or early July. Larvae from this and subsequent generations may attack either twigs or fruit depending on fruit maturity and population density.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=90
» http://ipm.ucanr.edu/PMG/r602300611.html
» https://utahpests.usu.edu/slideshows/ppt/05sh-insects-ptbcontrol.pdf
Coryneum Blight
Tree Fruits All Locations
Coryneum blight/shothole disease
Posted on: April 6, 2018 by Rich Guggenheim
Environmental conditions are favorable for the development of Coyneum blight on prunus spp. the fungal pathogen, Wilsonmyces carpophhilus attacks peach, apricot, plum, and cherry. Early season infections are characterized by the presence of a reddish-purple halo surrounding a light tan, scab-like center spot, which is the dead fruit skin killed by the fungus. These are similar to damage caused by San Jose Scale, and great care is required to avoid confusion. Depending on weather factors, the spots may remain tiny or enlarge to 1/4 inch in diameter. In severe cases, lesions coalesce and cause skin cracking. Severe, early season infections also can have gummy ooze on the fruit surface.
Management includes cleaning and removal of infected plant material. Fungicides can be used, but are preventalitive and not curative and may be applied at schuck fall. Commercial growers may need to apply at regular intervals during wet weather.
» https://utahpests.usu.edu/ipm/agricultural/fruit/coryneum-blight
» http://extension.colostate.edu/topic-areas/agriculture/coryneum-blight-2-914/
» http://ipm.ucanr.edu/PMG/GARDEN/FRUIT/DISEASE/shothole.html
Environmental Conditions Favor Fire Blight Development
Apple All Locations
Erwinia amylovora.
Posted on: April 6, 2018 by Rich Guggenheim
Current environmental conditions favor the development of Fire Blight in apple and related family of trees such as pyracantha, hawthorn, and cotoneaster. This disease does not affect stone fruit such as cherries, plum, apricot, or peach.
Management is best controlled by puning out diseased plant parts. Bordeaux mixture, Streptomycin, and copper sprays are also used to manage this bacterial disease.
» http://extension.usu.edu/files/factsheets/Disease%20027%20UPDC%20Fire%20blight.PDF
» http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
» http://extension.colostate.edu/topic-areas/yard-garden/fire-blight-2-907/
Boxelder bugs
Landscape and Garden All Locations
Box Elder Bugs
Posted on: March 30, 2018 by Rich Guggenheim
Boxelder bugs are active. Management is extremely difficult. Management techniques include:
Exclusion- sealing cracks and around windows, doors, and other entry points.
Eradication of female box elder trees.
Vacuuming- cleaning up the bugs with a shop vac.
Diatomaceous earth can create an effective barrier along with certain contact insecticides. However, repeated insecticide applications have been shown to quickly create resistance and will dramatically reduce natural enemies. Therefore, insecticides should not be used unless necessary to prevent substantial fruit damage. Always read and follow all label instructions.
» https://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1208.pdf
» http://oregonstate.edu/dept/kbrec/boxelder-bug
» http://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1208-S.pdf
Clover mites
Landscape and Garden All Locations
Mites
Posted on: March 20, 2018 by Rich Guggenheim
Spider and clover mites have been confirmed in landscapes throughout Canyon County. They are especially problematic on the south and west facing yards where temperatures are warmer and drier. They can invade homes, where they become a nuisance. Control can be obtained with diatomaceous earth as a barrier. Do not use insecticides to control mites. Always read and follow label instructions.
» http://extension.colostate.edu/docs/pubs/insect/05505.pdf
» https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1877&context=extension_curall
» https://www.extension.umn.edu/garden/insects/find/clover-mites/
» https://www.unce.unr.edu/publications/files/ho/other/fs9605.pdf
Cull Onion Disposal in Idaho- 2018
All Crops All Locations
cull onions
Posted on: March 13, 2018 by Jerry Neufeld
The deadline to dispose of cull onions in Idaho is March 15. The pdf file below from Idaho State Department of Agriculture contains more information about cull onion disposal.
2018 Spring Garden Festival
Announcements All Locations
Posted on: March 5, 2018 by Rich Guggenheim
Join us for the 2018 Spring Garden Festival and Plant Sale on April 21st from 9:30 am to 4 PM!
Four tracks of classes are available:
- ISA credits are available for the arborist track
- ISDA credits are available for pesticide track
- PD credits for teachers on JMG track.
- Gardening 101!
Come learn about youth gardening, and general introduction to gardening in Idaho with these all day classes. The cost is $30 for the full day!
To register call 208-459-6003.
Extension programs are available to all. For those requesting special accommodation, please call Rich Guggenheim at 208-459-6003 by APril 15.
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Potato All Locations
Posted on: February 23, 2018 by Nora Olsen
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Announcements recently went out on whether you will be audited in person for your 2017 responses to the Potato Sustainability Initiative (PSI) survey. Most process growers are requested to participate in the PSI sustainability survey and approximately 20% of the growers who completed the survey will be audited each year. The audit involves an interview between the grower and auditor with specific questions and an inspection of documents. A manual has been developed to help growers methodically and successfully gather required documents for the audit, with examples of standard operating procedures, and resources to help answer interview questions. The manual is posted at http://www.uidaho.edu/cals/potatoes. Changes to this manual will be done periodically to adjust for changes to the PSI survey. Note that the survey and audit changed from the previous year. The manual was developed by University of Idaho, Washington State University and IACI with funding from the NW Potato Research Consortium.
Idaho Veterans Garden
Landscape and Garden All Locations
Free Gardening Classes
Posted on: February 21, 2018 by Rich Guggenheim
Join us each Thursday for a series of free classes for the whole family. These classes will be offered at the Idaho Veterans Garden, weather permitting. Otherwise, they will be at the Caldwell Library at 6PM
February 22: Raised bed design and layout- space utilization for maximum yield (At Caldwell Library)
March 1: Gardening for cool/ warm season (succession planting)
March 8: Seed starting
March 15: Spring weed management
March 22: Irrigation system design (focusing on drip)
For more info, call 208-459-6003 and register
Spring Garden Festival. ISA, ISDA, Teacher PD available.
All Crops All Locations
Garden Classes!
Posted on: February 20, 2018 by Rich Guggenheim
Join us on April 21st for an all day gardening festival with four tracks to choose from. A plant sale to benefit the Master Gardener Volunteer program will also be available. See the attached flyer for details.
The cost is $30 for the entire day. To register for a track, contact the University of Idaho Extension Office in Canyon County at 208-459-6003
» https://www.uidaho.edu/extension/county/canyon/horticulture/festival
Weeds and insects
Landscape and Garden All Locations
Early emergence of weeds and insects.
Posted on: February 14, 2018 by Rich Guggenheim
With unseasonably warm temperatures this winter, weeds and insects have already begun to emerge. It is predicted that weeds and insects will be severe this year. In addition to trapping and monitoring, application of dormant oils, pre emergent herbicides, and other preventative pest management measures should have already begun.
One of the most effective ways to manage weeds in the landscape is to apply a 4-6 inch layer of arborist chips.
For more information on controlling pests, including weeds and insects in your landscape, contact your local University of Idaho Extension office.
» http://extension.colostate.edu/topic-areas/insects/insect-control-horticultural-oils-5-569/
» http://ucanr.edu/datastoreFiles/268-754.pdf
» https://oregonstate.edu/dept/nursery-weeds/feature_articles/top_10/Top_10_reasons.html
Fruit Tree Pruning Workshop
Announcements All Locations
2018 Fruit Tree Pruning Workshop
Posted on: February 14, 2018 by Rich Guggenheim
The University of Idaho Pomology and Viticulture Program’s Annual Fruit Tree class will be held on Saturday, February 17th at 9:00 am until about 1:00 pm. It will be held in the large meeting room at Western Laboratory, 211 Hwy 95, Parma, ID 83660. After the classroom session (9:00-10:30), you will go to the UI orchards/vineyards for hands on demonstrations. You may bring your pruning tools if you would like. They will be cleaned before you start pruning. Please let us know if you are coming by Friday.
If you have any questions, please don’t hesitate to contact us.
University of Idaho
Parma Research & Extension Center
29603 U of I Lane
Parma, ID 83660
Phone: (208) 722-6701 ext. 228
Fax: (208) 722-6708
» https://www.uidaho.edu/cals/parma-research-and-extension-center
Grape School location Change
All Crops All Locations
2018 Grape School
Posted on: February 8, 2018 by Rich Guggenheim
Due to the large number of participants for the UI Grape School on Saturday, 9:00 am, Feb. 10th, we have had to change the location. It will now be held at the Western Laboratory’s large meeting room. The address is: 211 Hwy 95, Parma, ID 83660, just north of Parma on the west side of the highway. Their phone number is 208 722-6564 if you should have any questions.
Thank you and sorry for such short notice.
Maurine for Dr. Essie Fallahi
Cereal Schools for Southern Idaho
All Crops All Locations
Cereal Schools
Posted on: January 31, 2018 by Juliet Marshall
UI Extension will be hosting the 2018 Cereal Schools next week, February 6 - February 9. There will be a Cropping School in Caldwell Feb 9. CCA and ISDA Pesticide Credits will be available. See attached URL for details on locations and agendas.
Feb 6 - Burley
Feb 7 - Pocatello
Feb 8 - Idaho Falls and Ashton
Feb 9 - Preston and Caldwell
Preventing and Managing Pesticide Resistance Risk Workshop
All Crops All Locations
Posted on: January 27, 2018 by Stuart Reitz
Preventing and Managing Pesticide Resistance Risk Workshop
February 7, 2018
9 am to 12 pm
Malheur County Extension Office, 710 SW 5th Ave., Ontario
No registration charge!
CEUs:
CCA Credits; Idaho and Oregon Pesticide Applicator Credits
Instructors:
Paul Jepson, Integrated Plant Protection Center, OSU
Mary Halbleib, Integrated Plant Protection Center, OSU
Stuart Reitz, Malheur County Extension, OSU
This will be an interactive workshop for growers and crop consultants to increase knowledge regarding the importance of pesticide resistance, and methods to minimize the development of pesticide resistance, and methods to reverse resistance should it occur. The focus of the workshop will be on pests of onions, especially weeds, like yellow nutsedge, and insects, like onion thrips. However, the concepts are applicable to all crops.
The workshop will be a combination of presentations, hands-on exercises for the participants, and discussion among the participants and instructors. Participants will work in groups to facilitate information exchange on exercises related to pesticide resistance and its management. There will be a general discussion session following each exercise.
Western Idaho Ag Show ISDA+IWC event
All Crops All Locations
Posted on: January 15, 2018 by Olga Walsh
Southern Idaho Cereal School at the The Western Idaho Ag Expo, Caldwell ID,
*** 10:30 AM to 12:00 PM ***
*** Variety trials results
*** Wheat Diseases & Pests
*** Varieties in Integrated Disease Management
*** Seed Developers Panel
*** 1 ID Recert Credit ***
The exhibitors of Western Idaho Ag Expo will exhibit the latest and advanced products and services including agri and irrigation services, machines, Ag products, trailers, equipment, grain systems, insurance services, water systems, spraying systems, electric motor, Ag technologies, pesticides, farm equipment, products and services.
2018 Miller Research Potato Pest Management Seminar
All Crops All Locations
Posted on: January 3, 2018 by Jeff Miller
Miller Research LLC will hold its annual potato pest management seminar Tuesday, January 30, 2018, at the Minidoka County Extension Office (drill hall) at the Minidoka County Fairgrounds (85 E Baseline in Rupert). A detailed agenda is attached.
The cost to attend the meeting is $5 per person. Please RSVP to Cheryn Clayton at 208-531-5124 or by email at cheryn@millerresearch.com. A printed copy of the slides for taking notes can be purchased for $5 if ordered prior to the meeting. Orders need to be placed by Friday, January 26.
If you have specific questions you would like addressed which relate to the above topics, those can also be sent in advance.
Three CCA (Pest Management) credits have been awarded and Idaho Pesticide Recertification credits have been requested.
2017 Pesticide Stewardship Conference presentations
All Crops All Locations
Posted on: December 19, 2017 by Kimberly Tate
Check out the Pesticide Stewardship Conference presentations! Click on PPTs From Winter Meetings in the left banner, then open 2017 Pesticide Stewardship Conference.
Master Gardener Class Deadline is quickly approaching!
Announcements All Locations
Posted on: December 19, 2017 by Dian Roberson
There is still room in the 2018 Canyon County Master Gardener Class! The deadline to register is December 29th! Download the application at https://drive.google.com/file/d/0B88K2B0J0jApZWdnamVQY05DcFU/view?usp=sharing
2017 Treasure Valley Irrigation Conference, December 14th in Ontario
All Crops All Locations
Posted on: December 6, 2017 by Jerry Neufeld
Just want to remind everyone about the Treasure Valley Irrigation Conference on December 14th at the Four Rivers Cultural Center in Ontario. Attached is a brochure and another file containing addtional information about the topics.
2017 Annual Survey
Announcements All Locations
Posted on: December 1, 2017 by Jerry Neufeld
Thanks to everyone that completed an annual Survey. The winners of the Texas Roadhouse gift cards are Jennifer Riebe, Charlie Robinson and Curtis Jones. You should receive them in the mail in a few days.
Pesticide Applicator Recertification Training, 2017
All Crops All Locations
Posted on: November 15, 2017 by Jerry Neufeld
A pesticide applicator recertification training will be held on December 13, at the public meeting room at the Caldwell Police Department. Six credits will be available. Click on the pdf below for more information.
Pesticide Stewardship Conference: Managing Drift
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Posted on: November 13, 2017 by Kimberly Tate
Dear Extension Colleagues,
The UI Extension and ISDA Pesticide Stewardship Conference will be held on Thursday, Nov. 30th & Friday, Dec. 1st, 2017 (see agenda). There are 10 recertification credits available for professional applicators and crop advisors. Topics include: Management of Pesticide Drift, Insect Pest Management, Adjuvants & Pesticide Performance, Herbicides & Resistant Weeds, Protecting Pollinators, Pesticides and Water Resources, Plant Disease Management, a Discussion Panel and much more!
Join us for this special event at The Riverside Hotel in Boise. Register now and before Nov. 19, for $110 per person, on Nov. 20th and thereafter it is $200 per person. Enroll online at: http://www.uidaho.edu/extension/ipm. If you have any questions contact Kimberly by phone (208) 364-4581 or email ktate@uidaho.edu.
FSMA Grower Training - Upcoming Classes
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Posted on: November 10, 2017 by Stuart Reitz
Food Safety Modernization Act (FSMA) Update
The first compliance dates for the Produce Safety Rule requirements begin in January 2018 for farms that produce Raw Agricultural Commodities (e.g., onions, carrots, melons, tree fruit, grapes, berries) and have more than $500,000 in annual produce sales. Compliance dates are staggered by farm size, so smaller farms (based on produce sales) have later compliance dates.
To determine if your farm is covered by the Produce Safety Rule and your target compliance dates, complete this self-guided decision tool provided by the University of Idaho https://uidaho.co1.qualtrics.com/jfe/form/SV_8D1ucSlEeq749AF.
FSMA Training:
The Produce Safety Rule requires that one representative from each covered farm receive training accredited by the FDA. Currently, Produce Safety Alliance (PSA) trainings are the only standardized national training program approved by FDA.
The first grower training classes in the PNW are coming up in November:
Nov 14 - Hermiston, OR Registration for this class is still open at:
https://apps.ideal-logic.com/osuextension?key=F3T9-25VWY_K9KH-5PTF_e69240be
Nov 14 - Caldwell, ID
Nov 15 - Caldwell, ID
Nov 15 - Hood River, OR
Nov 16 - Payette, ID
Produce Safety Alliance information, including comprehensive list of training classes and how to register:
https://producesafetyalliance.cornell.edu/food-safety-modernization-act or visit the individual state websites listed below.
These are national standards, so trainings can be done in either Oregon, Idaho, Washington, or anywhere else.
Oregon information: http://www.oregon.gov/ODA/agriculture/Pages/FSMA.aspx.
Idaho information: http://www.uidaho.edu/extension/food-safety-for-produce-growers.
Washington FSMA information: https://agr.wa.gov/FoodAnimal/ProduceSafety/
Please check the full schedule of classes in Idaho at:
https://www.eventbrite.com/o/university-of-idaho-extension-produce-safety-14547809781
Produce Safety Alliance information, including comprehensive list of training classes:
https://producesafetyalliance.cornell.edu/food-safety-modernization-act
2017 Survey
Landscape and Garden All Locations
Surveys
Posted on: October 23, 2017 by Rich Guggenheim
We are looking for your feedback on the 2017 Pest Alert Network. Please take a few moments of your time to help us improve. Thank you for your time.
2017 Idaho Association of Plant Protection Annual Meeting
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Posted on: October 17, 2017 by Jeff Miller
The 2017 annual meeting of the Idaho Association of Plant Protection will be held in Twin Falls, ID at the College of Southern Idaho, Taylor Building room 277. The program has been finalized and can be downloaded here. Registration begins at 12:00 p.m. on Wednesday and the program will begin at 12:40 p.m. The program will continue Thursday beginning at 8:00 a.m. and continue until noon. Registration costs $15.00 and can only be made by check or cash. (Sorry! No credit cards.) Certified Crop Advisor (CCA) credits and Idaho Pesticide Recertification credits (ISDA) have been requested. Lunch will be provided Wednesday during registration.
Please contact either Juliet Marshall (jmarshall@uidaho.edu) or Zewdie Abate (zaabate2011@gmail.com) if you have any questions.
» http://www.millerresearch.com/alerts/research-news/item/55-2017-iapp-annual-meeting
FSMA Grower Training Classes
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Posted on: October 17, 2017 by Stuart Reitz
Food Safety Modernization Act (FSMA) Update
Although the FSMA water testing rules are on hold, the other provisions in the Produce Safety Rule are going into effect as previously scheduled.
The first compliance dates for the Produce Safety Rule requirements begin in January 2018 for farms that produce Raw Agricultural Commodities (e.g., onions, carrots, melons, tree fruit, grapes, berries) and have more than $500,000 in annual produce sales. Compliance dates are staggered by farm size, so smaller farms (based on produce sales) have later compliance dates.
To determine if your farm is covered by the Produce Safety Rule and your target compliance dates, complete this self-guided decision tool provided by the University of Idaho https://uidaho.co1.qualtrics.com/jfe/form/SV_8D1ucSlEeq749AF.
FSMA Training:
The Produce Safety Rule requires that one representative from each covered farm receive training accredited by the FDA. Currently, Produce Safety Alliance (PSA) trainings are the only standardized national training program approved by FDA.
The first grower training classes in the PNW are coming up in November:
Nov 7 - Medford, OR
Nov 7 - Idaho Falls, ID
Nov 9 - Twin Falls, ID
Nov 13 - Aurora, OR
Nov 14 - Hermiston, OR
Nov 14 - Caldwell, ID
Nov 15 - Caldwell, ID
Nov 15 - Hood River, OR
Nov 16 - Payette, ID
Produce Safety Alliance information, including comprehensive list of training classes and how to register:
https://producesafetyalliance.cornell.edu/food-safety-modernization-act or visit the individual states' websites listed below.
These are national standards, so trainings can be done in either Oregon, Idaho, Washington, or anywhere else.
Oregon information: http://www.oregon.gov/ODA/agriculture/Pages/FSMA.aspx.
Idaho information: http://www.uidaho.edu/extension/food-safety-for-produce-growers.
Washington FSMA information: https://agr.wa.gov/FoodAnimal/ProduceSafety/
Please check the full schedule of classes in Idaho at:
https://www.eventbrite.com/o/university-of-idaho-extension-produce-safety-14547809781
Produce Safety Alliance information, including comprehensive list of training classes:
https://producesafetyalliance.cornell.edu/food-safety-modernization-act
» http://www.oregon.gov/ODA/agriculture/Pages/FSMA.aspx
» http://www.uidaho.edu/extension/food-safety-for-produce-growers
» https://agr.wa.gov/FoodAnimal/ProduceSafety/
» https://uidaho.co1.qualtrics.com/jfe/form/SV_8D1ucSlEeq749AF
End of psyllid monitoring in Idaho for the 2017 season
Potato All Locations
Potato Psyllid
Posted on: October 5, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Gooding (1 field), Twin Falls (1 field), Jerome (1 field), and Bannock (1 field).
This week, we collected 22 psyllids from sticky cards (all from Intense sites).
Nearly all of the 95 fields that were in the monitoring program have been harvested. We had traps deployed in the 7 remaining fields and found psyllids in 4 of them.
Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium associated with zebra chip disease.
This is the last week of psyllid monitoring in potato fields for this season. Thankfully psyllid numbers were far lower than last year, and Lso incidence thus far has been lower than we’ve ever recorded for a season.
We are extremely grateful to all of the growers, crop consultants, and other cooperators who helped with this project.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Now accepting applications for 2018 Master Gardener Volunteer Training.
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Master Gardener Volunteers Needed!!!!
Posted on: October 4, 2017 by Rich Guggenheim
If you are interested in sharing research based information to help Idaho gardeners successfully and sustainably grow, The Idaho Master Gardener Volunteer program is for you!
Our volunteers share research based gardening information in a variety of ways. From speakers bureau's to school gardens, we are in need of volunteers who have a passion for helping people grow!
Training begins January 17th and runs for 16 weeks and is the equivalent to a three credit college course.
You will be learn about:
Agronomy and soil science
Botany
Phytopathology
Entomology
Weed science
Disease diagnostics
Integrated Pest Management
Turf management
Arboriculture
Fruit and vegetable production
Sustainable Landscape design and management.
Cost includes a background check, all books and supplies for the class, a soil test, t-shirt.
Upon completion of the 40 hour classroom training, volunteers are required to complete 40 hours of approved education in the community.
Space is limited, so please apply early.
Those working in the green industries are invited to apply without the volunteer requirement. Call 208-459-6003 for more information.
» https://drive.google.com/open?id=0B88K2B0J0jApZC1tRFdxeEFUdjQ
Now taking orders for the Seedlings for Conservation program!
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Conservation
Posted on: October 4, 2017 by Rich Guggenheim
We are now taking orders for the #SeedlingsForConservation program. We *strongly* recommend you order early as popular varieties sell out quickly. See the attached order form for pricing and lot information. For more information, contact the University of Idaho Extension office in Canyon County at 208-459-6003.
» https://drive.google.com/file/d/0B88K2B0J0jApa2RlNkhRQlpBb2M/view
Psyllid monitoring update, 29 September 2017
Potato All Locations
Potato Psyllid
Posted on: September 29, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (1 field), Gooding (1 field), Jerome (1 field), and Bannock (1 field).
This week, we collected 7 psyllids from sticky cards (1 from Light site and 6 from Intense sites).
Nearly all of the 95 fields that were in the monitoring program have been harvested. We had traps deployed in the 7 remaining fields and found psyllids in 4 of them.
Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. However, with the increased trap captures during recent weeks, some psyllids remain to be tested.
We expect to close out this year’s monitoring program within the next 2-3 weeks.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Temperatures and psyllid abundance decrease
Potato All Locations
Potato Psyllid
Posted on: September 22, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields) Gooding (1 field), and Power (1 field).
This week, we collected 50 psyllids from sticky cards (all from Intense sites).
Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in 19 of the remaining fields and found psyllids in 5 of these 19 fields (26.3%). However, we are waiting to receive cards from an additional 21 Light sites.
Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. However, with the increased trap captures during the last two weeks, some psyllids remain to be tested.
The dip in psyllid captures is almost certainly related to the cooler, rainy weather (in addition to the fact that fewer fields are still being monitored). Despite the rise in psyllid abundance during the previous 2-3 weeks, Lso incidence remains far lower than we’ve ever recorded for a season. Risk of ZC continues to appear relatively low as the season winds down.
We expect all of the remaining fields being monitored to undergo vine kill within the next two weeks.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid captures continue to rise, but season Lso incidence still remains low
Potato All Locations
Potato Psyllid
Posted on: September 15, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Payette (1 field), Canyon (9 fields), Elmore (1 field), Gem (1 field), Gooding (1 field), Twin Falls (5 fields), Jerome (2 fields), Minidoka (1 field), Cassia (7 fields), and Power (2 fields).
This week, we collected 243 psyllids from sticky cards (94 from Light sites and 149 from Intense sites).
Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 70 of the remaining fields and found psyllids in 30 of these 70 fields (42.8%).
This week we found 39 nymphs in leaf samples from one site in Canyon county.
Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Although psyllid abundance is rising, Lso incidence remains far lower than we’ve ever recorded for a season.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid captures continue to rise, but season Lso incidence remains low
Potato All Locations
Potato Psyllid
Posted on: September 8, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Payette (1 field), Canyon (10 fields), Elmore (2 fields), Gem (1 field), Gooding (1 field), Twin Falls (5 fields), Jerome (3 fields), Cassia (3 fields), Power (1 fields), and Bingham (1 field).
This week, we collected 126 psyllids from sticky cards (70 from Light sites and 56 from Intense sites).
Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 67 of the remaining fields and found psyllids in 28 of these 67 fields (41.8%). However, we are still waiting to receive cards from 10 light sites.
This week we found 3 nymphs in leaf samples from Canyon county and 4 adults in vacuum samples from Gooding and Twin Falls counties. This is the first incidence of immature psyllids in our samples this year, which is not surprising at this point in the season.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
The late-season rise in psyllid captures is consistent with the general pattern we’ve observed for the last five years. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time, and Lso incidence so far is lower than we’ve ever recorded for a season (1.33%).
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Fall 2017 Dig In Newsletter
Announcements All Locations
Posted on: September 5, 2017 by Rich Guggenheim
Dig into some great tips on fall gardening in this year's fall edition of Dig In.
2017 Treasure Valley Tomato Taste off
Announcements All Locations
Posted on: September 5, 2017 by Rich Guggenheim
Join us on September 16th from 10 am to 2 pm for the Treasure Valley Tomato Taste off.
Uptick in psyllid abundance as season winds down
Potato All Locations
Potato Psyllid
Posted on: September 1, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Gem (1 field), Gooding (1 field), Twin Falls (7 fields), Jerome (2 fields), Cassia (1 field), Power (2 fields), and Bingham (1 field).
This week, we collected 59 psyllids from sticky cards (39 from Light sites and 20 from Intense sites).
As the season winds down, some of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 88 of the remaining fields and found psyllids in 24 of these 88 fields (27.2%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Typically we see a spike in psyllid abundance during late August to September, which may explain the uptick in psyllid numbers this week. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Unusable pesticide disposal
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Posted on: September 1, 2017 by Jerry Neufeld
Idaho State Department of Agriculture is announcing their fall schedule for collecting unusable pesticides. Click on the pdf below for more information.
Psyllid monitoring update, 25 August 2017
Potato All Locations
Potato Psyllid
Posted on: August 25, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Payette (1 field), Canyon (6 fields), Gem (1 field), Gooding (1 field), Twin Falls (5 fields), Jerome (2 fields), Minidoka (1 field), and Power (1 field).
This week, we collected 32 psyllids from sticky cards (22 from Light sites and 10 from Intense sites).
As the season winds down, some of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in 91 of the 92 remaining fields and found psyllids in 18 of these 91 fields (19.8%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Typically we see a spike in psyllid abundance during late August to September, but this continues to be a relatively “quiet” year for potato psyllids. We will have to wait and see what the coming weeks bring.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
No Late Blight in Potatoes yet in 2017
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Late Blight
Posted on: August 20, 2017 by Kasia Duellman Kinzer
No confirmed reports of late blight in Idaho as of August 17, 2017 – But
Don’t let your guard down
We have received no confirmed reports of late blight on potatoes in Idaho as
of August 18, 2017. However, it’s important that we don’t let our guard
down. Over the years, when outbreaks do occur in Idaho they tend to come at
this time of the year when the nights are getting longer and dew and
humidity lingers in the canopy later into the morning. The appearance of
late blight this time of year puts tubers at greater risk of infection, and
as long as plants have green tissue, diligent monitoring for this disease
should continue.
Late blight has been reported in the Columbia Basin in Washington, but there
have been no reports of late blight in Oregon.
The strain of the late blight pathogen (Phytophthora infestans) that is
prevalent in Idaho, US-23, can infect tomatoes as easily as it infects
potatoes. With the recent cool wet weather we have experienced in south
eastern Idaho, growers who have potato fields near housing subdivisions
should consider scouting for symptoms of late blight in low lying areas or
areas which stay wet longer next to the subdivisions, since late blight may
spread from garden tomatoes to surrounding potato fields. Timely diagnosis
of late bight is vital for successful management of this disease.
If you happen to grow tomatoes, it’s critically important to monitor your
garden tomatoes, too. We encourage samples of potato or tomato suspected to
be infected with late blight to be sent to University personnel for
confirmation.
If you think that you have late blight in your potato field or garden
tomatoes, please submit a sample to the University of Idaho for
confirmation. For southwestern Idaho (and Malheur Co. Oregon), contact
University of Idaho personnel at the Parma Research and Extension Center at
208-722-6701; for south central Idaho, contact the Kimberly Research and
Extension Center at (208) 423-4691; and for southeastern Idaho, contact the
Idaho Falls Research and Extension Center at (208) 529-8376 or the Aberdeen
Research and Extension Center at (208) 397-4181.
This information provided by Drs. Kasia Duellman and Phillip Wharton, University of Idaho
Psyllid monitoring update, 18 August 2017
Potato All Locations
Potato Psyllid
Posted on: August 18, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Owyhee (1 field), Canyon (5 fields), Gooding (1 field), Twin Falls (5 fields), Jerome (2 fields), Minidoka (1field), Cassia (1 field), and Power (2 fields).
This week, we collected 33 psyllids from sticky cards (23 from Light sites and 10 from Intense sites).
We had traps deployed in 93 of the 95 fields that are being monitored this year and found psyllids in 18 of these 93 fields (19.3%).
Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
This continues to be a relatively “quiet” year for potato psyllids. For perspective, during August last year we were collecting hundreds of psyllids per week with similar sampling effort.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Contaminated Azadirachtin Organic Insecticides - Recall Notice
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Posted on: August 18, 2017 by Ronda Hirnyck
University of Arizona Extension Faculty put together the attached IPM Short on the topic of contaminated organic insecticide products with the active ingredient azadirachtin, some of which are subject to a national voluntary recall. Please share this information with growers, PCAs, distributors, Master Gardeners, or others who may use or have an interest in these products. Please share with you Master Gardeners also.
Click on the pdf below for more information.
Potato psyllid monitoring update, 11 August 2017
Potato All Locations
potato psyllids
Posted on: August 11, 2017 by Erik Wenninger
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (9 fields), Elmore (1 field), Twin Falls (2 fields), Jerome (1 field), Minidoka (1field), and Power (1 field).
This week, we collected 26 psyllids from sticky cards (22 from Light sites and 4 from Intense sites).
We had traps deployed in 91 of the 95 fields that are being monitored this year and found psyllids in 15 of these 91 fields (16.5%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
This continues to be a relatively “quiet” year for potato psyllids. For perspective, during August last year we were collecting hundreds of psyllids per week with similar sampling effort.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Malheur Experiment Station Onion Variety Day August 22
All Crops All Locations
Posted on: August 9, 2017 by Janet Jones
Malheur Experiment Station Onion Variety Day August 22
You are invited to the Malheur Experiment Station Onion Variety Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
in the field off Onion Avenue under the canopy.
Date: Tuesday, August 22, 2017
Registration starts at 9:00am with donuts and refreshments.
A complimentary lunch will be served at noon.
Click on the PDF below for the Flyer.
Please RSVP for lunch or if you need more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
First Lso-positive psyllid collected in Treasure Valley this year
Potato All Locations
Potato Psyllid
Posted on: August 4, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (5 fields), Gem (1 field), Elmore (1 field), Twin Falls (4 fields), Jerome (2 fields), Minidoka (2 fields), Cassia (4 fields), and Bannock (1 field).
This week, we collected 35 psyllids from sticky cards (23 from Light sites and 12 from Intense sites).
We had traps deployed in 92 of the 95 fields that are being monitored this year and found psyllids in 20 of these 92 fields (21.7%).
One psyllid collected last week in Canyon County tested positive for Lso (liberibacter), the bacterium that causes zebra chip. This is our first hot psyllid in the Treasure Valley this year and our fifth hot psyllid collected this year on sticky traps in commercial potato fields. Thus far this year, 2.3% of the psyllids we have collected on sticky traps have tested positive for Lso. This percentage is higher than last year, though the total number of psyllids collected this year has been far lower than last.
We continue to urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid monitoring update, 28 July 2017
Potato All Locations
Potato Psyllid
Posted on: July 28, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (5 fields), Gem (1 field), Elmore (1 field), Twin Falls (5 fields), Gooding (1 field), Jerome (1 field), Cassia (2 fields), Power (1 field), and Bannock (1 field).
This week, we collected 24 psyllids from sticky cards (19 from Light sites and 5 from Intense sites).
We had traps deployed in 94 of the 95 fields that are being monitored this year and found psyllids in 24 of these 94 fields (25.5%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
We continue to urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Psyllid monitoring update, 21 July 2017
Potato All Locations
Potato Psyllid
Posted on: July 21, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Gooding (1 field), Jerome (2 fields), Twin Falls (3 fields), Minidoka (1 field), Cassia (4 fields), Bingham (1 field), and Power (6 fields).
This week, we collected 33 psyllids from sticky cards (22 from Light sites and 11 from Intense sites).
We had traps deployed in 94 of the 95 fields that are being monitored this year and found psyllids in 22 of these 94 fields (23.4%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Overall psyllid numbers have been increasing during the past few weeks, which is not surprising given that psyllids tend to become more abundant later during the season. We continue to urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Lso-positive psyllids in Jerome and Twin Falls counties
Potato All Locations
Potato Psyllid
Posted on: July 14, 2017 by Lucy Standley
Three psyllid collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Two of these psyllids were found in Jerome County, the other was found in Twin Falls County.
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (1 field) Elmore (1 field), Gooding (2 fields), Jerome (3 fields), Twin Falls (6 fields), Minidoka (2 fields), Cassia (4 fields), Bingham (1 field), and Power (7 fields).
This week, we collected 58 psyllids from sticky cards (31 from Light sites and 27 from Intense sites).
We had traps deployed in 93 of the 96 fields that are being monitored this year and found psyllids in 27 of these 93 fields (29%).
Overall psyllid numbers have been increasing during the past few weeks, which is not surprising given that psyllids tend to become more abundant later during the season. It is a little unusual that we are finding more psyllids in the Magic Valley than the Treasure Valley, which is opposite of the pattern we have observed over the last four years. Given the slight uptick in psyllid numbers and Lso incidence, we continue to urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
2017 Summer Farm Festival and Malheur Experiment Station Field Day
All Crops All Locations
Posted on: July 10, 2017 by Janet Jones
Wednesday July 12, 2017
8:00 AM - 9:00 AM
Registration - All events and tours are open to the public
8:30 AM—9:30 AM
Tour A. Drone demonstration
9:30 AM - 10:20 AM
Tour B. Onion and potato drip irrigation tour. We will show case a study evaluating the response of multiple onion cultivars to the recently registered method of applying Outlook (dimethenamid-p) through drip irrigation. Evaluation of drip irrigation and comparison to sprinkler irrigation for potato in an attempt to lower the comparative cost of drip irrigation. Latest work on internal rot in onion.
10:30 AM - 11:50 AM
Tour C. Onions, Spuds, and More. Control of onion thrips. Control of potato psyllids. Weed control for onions, potatoes, corn, and sweet potatoes.
Tour D. Alternative Crops
This tour will highlight quinoa and wildflower seed production.
Tour E. Tour for youth. Wildlife, Solar Eclipse, Water, Soils, and Drones! A fun tour designed to educate young people about sage grouse, animal tracking and capture, the solar eclipse, the importance of water and soils, and modern drones.
12:00 Free Lunch
12:20 PM Update on GMO Creeping Bentgrass, Danielle Posch
12:30 PM Honoring our community members
UI Extension Cereals Field Days are this week in Rupert, Idaho Falls, and Aberdeen
Small Grains All Locations
Posted on: July 10, 2017 by Juliet Marshall
The southern / eastern Idaho Cereals Extension Field days will be
Tuesday (Rupert/Minidoka) July 11th
Wednesday (Idaho Falls) July 12th
Thursday (Aberdeen) July 13th
We will be speaking about varieties, diseases, insects and management issues. Hope to see you there!!
For times and locations, please see the attached PDF files.
First Lso-positive psyllid found in Power County this year
Potato All Locations
potato psyllids
Posted on: July 7, 2017 by Erik Wenninger
One psyllid collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. This psyllid was found in a field in Power County.
Psyllids were collected this week on sticky traps in potato in the following counties: Gooding (1 field), Jerome (5 fields), Twin Falls (2 fields), Minidoka (3 fields), Cassia (5 fields), and Power (4 fields).
This week, we collected 31 psyllids from sticky cards (21 from Light sites and 10 from Intense sites).
We had traps deployed in 95 of the 96 fields that are being monitored this year and found psyllids in 20 of these 95 fields (21.1%).
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Three Cereal Extension Field Days next week - Rupert / Minidoka, Idaho Falls and Aberdeen
Small Grains All Locations
Cereals Extension Field Days
Posted on: July 6, 2017 by Juliet Marshall
The southern / eastern Idaho Cereals Extension Field days will be
Tuesday (Rupert/Minidoka) July 11th
Wednesday (Idaho Falls) July 12th
Thursday (Aberdeen) July 13th
We will be speaking about varieties, diseases, insects and management issues. Hope to see you there!!
For times and locations, please see the attached PDF file.
Powdery Mildew and Spider MItes in Sugarbeets
Sugarbeets All Locations
powdery mildew and spider mites
Posted on: July 6, 2017 by Jerry Neufeld
Powdery mildew and spider mites have been found by Amalgamated Sugar Company Crop Consultants in the Roswell, Weiser and Adrian, Oregon areas. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options for these pests.
Click on the links below for the powdery mildew and spider mite pages in the PNW Plant Disease and Insect Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-spider-mite
June 30, 2017 – More psyllids found in Treasure and Magic Valleys
Potato All Locations
Potato Psyllid
Posted on: June 30, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Jerome (1 field), Cassia (1 field), Canyon (2 fields), and Minidoka (1 field).
This week, we collected 9 psyllids from sticky cards (3 from Light sites and 6 from Intense sites).
We had traps deployed in 93 of the estimated 96 fields (96.8%) that will be monitored this year and found psyllids in 5 of these 93 fields (5.3%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Malheur Experiment Station Field Day July 12
All Crops All Locations
Posted on: June 29, 2017 by Janet Jones
You are invited to the Malheur Experiment Station Summer Farm Festival and Annual Field Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
Date: Wednesday July 12, 2017
Registration starts at 8:00am with coffee and donuts
Click on the PDF below for the tour descriptions and schedule.
Also featured:
- Agricultural trade show booths!
- Events and contests with prizes!
A complimentary lunch will be served at noon.
Please RSVP for lunch or if you need more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
First potato psyllid found in Eastern Idaho during 2017 monitoring
Potato All Locations
Potato Psyllid
Posted on: June 23, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Twin Falls (2 fields), Cassia (1 field), Power (1 field), and Minidoka (1 field).
This week, we collected 7 psyllids from sticky cards (6 from Light sites and 1 from Intense sites).
We had traps deployed in 93 of the estimated 96 fields (96.8%) that will be monitored this year and found psyllids in 5 of these 93 fields (5.3%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
June 16, 2017 – More potato psyllids found in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 16, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Twin Falls (1 field) and Jerome (1 field).
This week, we collected 2 psyllids from sticky cards (1 from Light sites and 1 from Intense sites).
We had traps deployed in 78 of the estimated 96 fields (81.2%) that will be monitored this year and found psyllids in 2 of these 78 fields (2.5%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
U of Idaho Parma Field Day - 2017
All Crops All Locations
Posted on: June 16, 2017 by Jerry Neufeld
This is a reminder that the University of Idaho Parma R and E Center will be hosting a Field Day on the morning of June 21, 2017. Stop by and visit with our faculty and staff about our 2017 research projects, see our facility and have lunch and refreshments with us. Please RSVP by calling 722-6701 or emailing laphillips@uidaho.edu to let them know you plan to attend. Idaho Pesticide Applicator Recertification and CCA credits will be issued. For additional information visit our web site, http://www.uidaho.edu/cals/parma-research-and-extension-center , or click on the pdf below.
Cereal Field Days - Schedule for Southern / Eastern Idaho
All Crops All Locations
Pests and Varieties of Wheat and Barley
Posted on: June 12, 2017 by Juliet Marshall
Attached is the schedule for the Southern / Eastern Idaho Cereal-related Field Days hosted by the UI Extension and Agricultural Experiment Stations.
First potato psyllids found in Treasure Valley
Potato All Locations
Potato Psyllid
Posted on: June 9, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Cassia (1 field) and Canyon (2 fields).
This week, we collected 3 psyllids from sticky cards (1 from Light sites and 2 from Intense sites).
We had traps deployed in 67 of the estimated 96 fields (69.7%) that will be monitored this year and found psyllids in 3 of these 67 fields (4.4%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
More potato psyllids found in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 2, 2017 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Gooding (1 field), Jerome (1 field), and Minidoka (1 field).
This week, we collected 6 psyllids from sticky cards (2 from Light sites and 4 from Intense sites).
We had traps deployed in 57 of the estimated 83 fields (68.6%) that will be monitored this year and found psyllids in 3 of these 57 fields (5.2%).
As always, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
First Lso-positive potato psyllid found in Idaho this season
Potato All Locations
potato psyllids
Posted on: June 1, 2017 by Erik Wenninger
One psyllid collected last week from a yellow sticky card deployed at the Kimberly Research & Extension Center tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease. No psyllids collected from commercial fields tested positive.
On Friday we will post details on our monitoring results from this week.
We continue to urge growers and crop consultants to implement IPM programs for zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
May 26, 2017 First potato psyllids found in Idaho potato fields this season
Potato All Locations
Potato Psyllid
Posted on: May 26, 2017 by Lucy Standley
We retrieved our first set of sticky traps from potato fields this season and found on these cards our first potato psyllids for the 2017 potato season.
Potato psyllids were collected on sticky traps in potato in the following counties: Twin Falls (1 field), Minidoka (2 fields).
This week, we collected 3 psyllids from sticky cards (2 from Light sites and 1 from Intense sites).
We had traps deployed in 17 of the estimated 73 fields (23%) that will be monitored this year and found psyllids in 3 of the monitored fields (17.6%).
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Lygus Bug emergence in Alfalfa Seed
All Crops All Locations
Lygus bug
Posted on: May 25, 2017 by Jerry Neufeld
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition shows that, depending on your location in the Treasure Valley, we have accumulated 257 degree days between January 1, 2017 and May 23, 2017. This is 18 days behind compared to this date in 2016 and 12 days behind the 30-year average. Peak emergence of lygus bug 1st and 2nd instar nymphs should occur right around 272 accumulated degree days: this usually occurs around mid-May, and is the time monitoring for lygus bugs in alfalfa seed fields should begin. Right now that is predicted to occur about May 26.
When using most insecticides, fields should be treated when numbers of lygus bugs reach 4-5 lygus bug nymphs per 180 degree sweep. Growers using Assail, or Beleaf, as stand-alone sprays probably should treat before or just as 4th instar nymphs are detected. We will plan to put out another alert as we approach 272 degree days in Parma. You can follow the degree accumulation yourself by using the web link at the bottom of this announcement. If all works correctly the location will be set to Parma and the correct model already will be listed. You can adjust the location and other information using the instructions below:
1) Select the location nearest you by selecting the appropriate pin in the map at the top of the page. The above data are for the Parma location. Results likely will vary depending on the location selected.
2) Select “insects” in the category drop down box under the map, then select the “Lygus bug [alfalfa seed] Ben Simko 2000” model from the “Select model” link to the right of the Model box. It should be model 61 in the list.
3) The predicted date for the 275 degree day accumulation for peak 1st and 2nd instar lygus nymphs will be listed in the “DDs Event” text box. You also can view the full model output by selecting the button labeled “Click here to CALC/ RUN model w/daily output”
Thanks for Dr. JIm Barbour for providing this information.
Potato Sustainability Audit Manual
All Crops All Locations
None
Posted on: May 24, 2017 by Nora Olsen
Manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Announcements recently went out on whether you will be audited in person for your 2016 responses to the Potato Sustainability Initiative (PSI) survey. Most process growers are requested to participate in the PSI sustainability survey and approximately 20% of the growers who completed the survey will be audited each year. The audit involves an interview between the grower and auditor with specific questions and an inspection of documents. A manual has been developed to help growers to methodically and successfully gather required documents for the audit, with examples of standard operating procedures, and resources to help answer interview questions. The manual is posted at www.uidaho.edu/cals/potatoes. Changes to this manual will be done periodically to adjust for changes to the PSI survey. The manual was developed by IACI, University of Idaho, and Washington State University with funding from the NW Potato Research Consortium.
Turf Buster Plant Sale
Announcements All Locations
Posted on: May 19, 2017 by Rich Guggenheim
The Canyon County Master Gardeners has plants for sale for your garden. Many 4 inch pots and 4 packs with tomatoes, peppers, onions, and more are only $1 beginning Monday. Seedling trees in 1 gal pots are $2.50 each. Stop by the office for more information or to purchase. Sale runs through Friday or until we run out of plants.
2017 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllids
Posted on: May 18, 2017 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by IPC, USDA, and generous in-kind contributions by our collaborators.
The first deployment of sticky cards occurred this week in 12 Treasure Valley sites and 21 Magic Valley sites. Next week we expect to initiate sampling in 15 and 20 additional fields in the Treasure and Magic valleys, respectively.
More details on the program will be forthcoming as we continue to ramp up sampling efforts. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
» http://www.uidaho.edu/cals/potatoes/news/psyllid-management
sugarbeet root maggot 2017
All Crops All Locations
https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
Posted on: May 16, 2017 by Jerry Neufeld
The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated nearly 360 growing degree days since January 1, 2017. Peak flight of root maggot flies should occur after 360 accumulated growing degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be very soon.
Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. The link below from the 2017 PNW Insect Management handbook contains additional information. Visit with your field consultant from AMSCO for treatment options.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
Lygus Bug in Alfalfa Seed, 2017
All Crops All Locations
Lygus Bug
Posted on: May 16, 2017 by Jerry Neufeld
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition shows that, depending on your location in the Treasure Valley, we have accumulated 201 degree days between January 1, 2017 and May 15, 2017. This is 17 days behind compared to this date in 2016 and 10 days ahead of the 30-year average. Peak emergence of lygus bug 1st and 2nd instar nymphs should occur right around 272 accumulated degree days: this usually occurs around mid-May, and is the time monitoring for lygus bugs in alfalfa seed fields should begin. Right now that is predicted to occur about May 25.
When using most insecticides, fields should be treated when numbers of lygus bugs reach 4-5 lygus bug nymphs per 180 degree sweep. Growers using Assail, or Beleaf, as stand-alone sprays probably should treat before 4th instar nymphs are detected. We will plan to put out another alert as we approach 272 degree days in Parma.
Below are the instructions for using the degree day calculator.
1) Select the location nearest you by selecting the appropriate pin in the map at the top of the page. The above data are for the Parma location. Results likely will vary depending on the location selected.
2) Select “insects” in the category drop down box under the map, then select the “Lygus bug [alfalfa seed] Ben Simko 2000” model from the “Select model” link to the right of the Model box. It should be model 61 in the list.
3) The predicted date for the 275 degree day accumulation for peak 1st and 2nd instar lygus nymphs will be listed in the “DDs Event” text box. You also can view the full model output by selecting the button labeled “Click here to CALC/ RUN model w/daily output”
Fire Blight (Erwinia sp.)
All Crops All Locations
Posted on: May 8, 2017 by Dian Roberson
Conditions have been in the extreme category over the last week for fire blight. This bacterial infection can attack anything in the rose family (Rosaceae). It is especially destructive to apples (Malus spp.), pears (Pyrus spp.), and crabapples (Malus spp.). There is no cure for fire blight. Prevention is the best solution. Purchase resistant varieties, minimize rapid growth and succulent tissue, prune out blighted twigs and cankered branches. Check out the publications and websites below for more information.
» https://pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-fire-blight
Codling Moth (Cydia pomonella)
Apple All Locations
Lepidoptera: Tortricidae
Posted on: May 3, 2017 by Rich Guggenheim
Codling moth has been trapped in Sunny slope orchards.
To successfully control codling moth in fruit trees, larvae must
be prevented from entering fruit. Controls must be applied
at a specific time. Once the eggs hatch and larvae enter the fruit, control
measures are ineffective.
Management includes a rigorous and routine schedule of spray insecticides, both organic and traditional, every 10 to 14 days depending on label instructions.
» http://jenny.tfrec.wsu.edu/opm/displayspecies.php?pn=5
» http://ipm.ucanr.edu/PMG/r4300111.html
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7412.html
» http://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1664&context=extension_curall
Spring 2017 edition of Dig In Newsletter
Announcements All Locations
Posted on: May 2, 2017 by Rich Guggenheim
The Spring 2017 edition of the Dig In Newsletter is now available. To pick up a print copy, stop by the University of Idaho Extension Office at 501 Main St. in Caldwell.
Yes, It is Robigalia, April 25th. The rust god is not appeased
Small Grains All Locations
Stripe rust in wheat
Posted on: April 26, 2017 by Juliet Marshall
BYD is being found on winter wheat and winter barley planted early in the fall 2016, and was worse in field planted without insecticidal seed treatments.
Stripe rust is starting in Idaho and the weather is very conducive to spread. Reports so far came Friday from Parma (on volunteer), yesterday from Twin Falls county on Everest hard red winter, and today - Power County on SY Ovation.
Parma (western Idaho) SR was found on lower and middle leaves. In Twin Falls county and Power county, SR was on middle to younger leaves. Crop is early jointing to late tillering.
The following is the report on stripe rust sent to my cereal pathology pest alert email group:
Did the the subject line catch your attention? Good.
Today is April 25th.
Robigalia!
from Anne Delgehausen, St. Paul, MN:
Screen Shot 2016-04-25 at 7.48.18 AM.png (SEE picture)
https://en.wikipedia.org/wiki/Robigalia An ancient Roman festival held to appease the God of rust (Robigus or Robigo). The Roman’s celebrated Robigalia, an annual festival that, through sacrifices and feasting, and hoped to prevent rust from destroying the upcoming crop.
May the evidence of your victory over the
Puccinia
be abundant in your fields!
AS I did last year on this date, I am sending this reminder of the devastating diseases caused by the rust fungi (Puccinia) - specifically in this case, as usual, stripe rust, also called yellow rust
While we no longer sacrifice red dogs (or sheep or goats) to stop stem rust, we battle another Puccinia (Puccinia striiformis), stripe rust almost every year now. While I am not suggesting you switch to sacrificing YELLOW dogs, however, I am suggesting that you remain vigilant in your battles against the yield-robbing fungi that affect so many wheat varieties.
So Yes, this email is a reminder that stripe rust is continuing to spread in irrigated and dryland crops.
This weather is very conducive to the spread of stripe rust. With susceptible varieties of winter wheat, it is highly recommended that you add fungicides in with the herbicides. But there are legitimate concerns about phytotoxicity associated with tank mixing.
Some general recommendations:
1) Application of tank mixes of herbicides and fungicides may result in phytotoxicity when cold (frosty) temperatures follow application. The same applies, more for spring wheat, when hot temperatures follow applications.
2) High pressure applications (40 psi) may result in increased phytotoxicity over lower pressure applications (30 psi).
3) No additional surfactant should be used when wild oat herbicides (Axial XL, Axial Star, Discover) are mixed with fungicides.
4) Bromoxynil herbicides (such as Bronate Advanced, Starane NXT, Maestro Advanced) should not be mixed with strobilurin fungicides.
5) READ and follow all label directions.
Last year I called some of our reps from various companies, who offered the following information:
From Kelly Luff of Bayer Crop Science:
Stratego (4-5 oz rate) can be tank mixed with herbicides, but leave out NIS. (Absolute is not recommended in this market due to potential phytotoxicity. Stratego YLD is not recommended.)
Do not spray prior to high risk of frost or freezing temperatures. Optimum performance comes when applications are made when frost isn’t occurring for a few days after application. Herbicides mixed with MSO increases burn especially with frost after application.
From Allan Landon of Syngenta:
Quilt, Headline and Twinline can be mixed with herbicides, but do not add surfactants with the mix. Wild oat herbicides (Axial XL, Axial Star or Discover) are higher in risk for phytotoxicity when mixed with these fungicides. (On the label: Twinline demonstrates phytotoxicity when mixed with EC formulated herbicides or insecticides and/or fertilizers.)
Actively growing, non-stressed crops fare better than stressed crops. Yellowing may occur, but crop should grow out of the symptoms.
From Joe Yennish of Dow:
Avoid mixing strobilurin fungicides with bromoxynil herbicides. PropiMax fungicide is a propiconizole and can be tank mixed with herbicides.
For Winter Wheat:
Stripe rust has been found where Brundage soft white winter wheat is grown. Reports so far came Friday from Parma (on volunteer), yesterday from Twin Falls county on Everest hard red winter, and today - Power County on SY Ovation.
For Spring wheat:
Choose resistant spring wheat varieties. Susceptible varieties should be protected with fungicides, including at herbicide timing.
Scout wheat for stripe rust, even resistant varieties. Changes in stripe rust races will mean that resistance may no longer be effective. PLEASE send reports and photos to me so we can keep track!
Cheers! I’ll be drinking red wine tonight, not white (yellow). Here’s to controlling rust!
Juliet
Diseases in Cereals - Stripe Rust confirmed in western Idaho
All Crops All Locations
Stripe rust in wheat
Posted on: April 24, 2017 by Juliet Marshall
Stripe rust on volunteer wheat was found by an observant colleague in western Idaho near Parma. Lower leaves are seen with stripe rust indicating it is likely that it overwintered. I will be receiving the sample and checking to be sure that it is wheat. Please scout fields of susceptible varieties in all areas of southern Idaho. So far, we have not seen stripe rust in our variety trial plots in Brundage, known to be very susceptible to stripe rust. Our plots were not planted early, and could have possibly missed an early fall infection. The current weather is very conducive for spread and infection.
Please report stripe rust to your local Extension county educator, specialist or to Juliet Marshall so we can track the progress and warn producers to promote timely fungicide application.
Bur Buttercup
All Crops All Locations
Bur Buttercup
Posted on: April 20, 2017 by Rich Guggenheim
Chemical control of Bur Buttercup (Ceratocephala testiculata) can be effective when weeds are extremely young. Mowing and burning is an effective cultural control as is hand pulling. The weed is now beginning to reach flowering and has entered the reproductive state. Bur Buttercup is also toxic to livestock. Always follow label instructions. Rotating pesticide mode of action can reduce the occurrence of pesticide resistance.
» http://extension.usu.edu/rangeplants/htm/bur-buttercup
» http://oregonstate.edu/dept/coarc/sites/default/files/june_2013_article-_weeds.pdf
Apple Aphid
Landscape and Garden All Locations
Aphis Pomei
Posted on: April 17, 2017 by Rich Guggenheim
Nymphs of the Apple aphid, which overwinters as an egg has been detected on ornamental landscape varieties of apple and crabapple. Although they rarely cause economic loss to trees, control may be desired in the home landscape for cosmetic purposes.
The best timing for woolly apple aphid control is petal-fall with a systemic insecticide, or during the summer with an effective contact insecticide. Application of dormant oil plus an insecticide at delayed dormant stage (half-inch-green) may
provide season-long control of green and rosy apple aphids.
» http://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1663&context=extension_curall
Red band needle blight
Landscape and Garden All Locations
Dothistroma Mycosphaerella pini
Posted on: April 6, 2017 by Rich Guggenheim
Red Band Needle Blight of pines is caused by Mycosphaerella pini. Austrian pines are most susceptible, followed by ponderosa and mugo pines.
Symptoms include brown needles (often the base of needles remain green), premature needle drop, loss of vigor, and a slow decline. Needle injury may resembling winter injury or scorch, however, diseased needles will also show gumming and sometimes broken tips that are an ashy-gray color. In addition, dothistroma infections usually occur on the lower and/or inner branches, where moisture is greatest.
Infections occur anywhere on a needle, leaving a “red band” (another name for this disease). The disease often works its way from the bottom of the tree up. In spring and early summer, an infected tree will have brown interior needles, and infections on the current season’s needles will not show browning until fall.
For severely infested trees, fungicide treatments should be applied soon, before budbreak. In Utah’s dry climate, infection rarely gets to the point of necessitating chemical treatment, however.
Treatment: Although infections can occur throughout the season, only spring treatments of fungicide (when necessary) are necessary. Three applications of either copper hydroxide (Kocide), copper hydroxide+mancozeb (Junction, Mankocide), or other copper (Bonide, Camelot) may be necessary, starting at budbreak and twice again at 10- to 14-day intervals.
» http://utahpests.usu.edu/IPM/htm/advisories/landscape/articleID=13019
» http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/dothistroma-needle-blight/
Diseases in Cereals - Look Out for Stripe Rust
Small Grains All Locations
Stripe rust and other diseases in cereals
Posted on: April 6, 2017 by Juliet Marshall
Current Situation with Cereals in Southern Idaho
First the good news!
There is a lot less damage in the area from snow mold and barley yellow dwarf than I expected. Good for our growers! Bad for me! Even my snow mold testing plots in Tetonia did not get as much snow mold as I was hoping. So far, the damage we see in our winter grain is related to excessive water, ponding, and successive freeze/thaw cycles. Not unexpectedly, winter wheat survived this stress much better than the winter barley. I know many people are already reseeding or have already seeded a spring crop into the dead areas of the winter (especially in wheat - a soft white wheat into a soft white winter, for example). This should be done as soon as possible to minimize the differing crop growth stages between the two crops. This is harder to do if you have a winter malt barley as mixing barley varieties will not work under contracted malt barley.
Now the bad news. HEADS UP, Western Idaho! You will be the first to see incoming stripe rust, if you don’t already have it. I am afraid we need to be prepared for a bad stripe rust year. Both Dr. Mike Flowers, OSU, and Dr. Xianming Chen have confirmed stripe rust throughout Oregon and Washington production areas. Mike said today the early planted winter wheat in Eastern Oregon has widespread stripe rust occurring in susceptible varieties. Xianming Chen also reported potentially heavy pressure and widespread occurrence throughout Washington, with stripe rust showing up a month earlier than average, foreboding a stripe rust year similar to 2011.
I have AS YET to find stripe rust overwintering in our winter wheat. It does not mean that it is not present! Please be sure to scout the susceptible varieties for stripe rust. If you have a field of Brundage soft white winter wheat for example, scout it soon and please let me know if you have stripe rust! The sooner we scout, confirm, and treat an infected field, will can reduce yield loss, and the sooner our neighbors can be forewarned about protecting their crop - yes this is a community disease!
WHAT IF I FIND STRIPE RUST? When should I apply fungicides?
The general recommendations this year will include applications of preventative fungicide at herbicide timing for susceptible varieties - PRIOR to even seeing stripe rust. Applications may need to continue as needed. Resistant varieties should not need fungicide applications - however, keep an eye on all varieties. Stripe rust races change. Even moderately resistant varieties may need an application of fungicides to reduce yield loss in severe years - if 5% of the plants in the field show stripe rust, applications of triazole-containing fungicides is recommended. Strobilurins and triazoles are protective, and triazoles are better at reducing spread in already infected plants.
Please note that BARLEY is not immune. We saw higher than normal levels of barley stripe rust in the plots near Aberdeen last year. I even saw stripe rust in triticale! (It did not cause yield loss - it was just interesting - to me.) Usually, barley stripe rust does not cause enough damage to warrant fungicide applications.
What else should I be watching for in cereals?
Winter wheat - take-all and straw breaker - especially with high soil moisture conditions. Definitely stripe rust - higher moisture always increases the chances of stripe rust spreading rapidly. Maybe powdery mildew, especially in heavily seeded fields..
Spring wheat - Stripe rust. Select a resistant variety to plant or be prepared to apply fungicides. Pythium can be a problem in cold, wet soils, especially with heavy crop residue (see the notes on Pythium in spring barley). Cereal cyst nematodes could be a problem too, especially in wetter soils.
Winter barley - winter kill has occurred in low areas of the field. In wetter weather, watch for the development of scald and / or spot form of net blotch. Barley stripe rust may also be present, but usually does not occur at damaging levels.
Spring barley - last year I saw powdery mildew in seedling barley. I was very surprised. It can easily be controlled with fungicides at herbicide timing. (Be aware of potential “hot” mixes by combining herbicides and fungicides - the damage risk increases with use of crop oils.) Stripe rust may be more of a problem in six-rowed varieties. Spot form of net blotch (SFNB) and scald will be problematic in wetter years, especially if you have crop residue of barley in no-till situations. Pythium will be a problem when planting into cold, wet spring soils. Last year we found mefanoxam resistant Pythium in a barley field. If your seed treatment (metalaxyl or mefanoxam) does not seem to be effective, let us know! Cereal cyst nematodes could be a problem too, especially in wetter soils.
TWO EARLY TO PREDICT:
Bacterial streak in barley, black chaff in spring wheat, and FHB in spring cereals. Stay tuned.
Degree Days for 2017
Landscape and Garden All Locations
Degree Days
Posted on: March 28, 2017 by Rich Guggenheim
Degree days for 2017:
Caldwell has reached 101 degree days. Estimates and forecasts are calling for estimated biofix 175 DD to be April 20. Easter week would be a good time to put traps out and begin monitoring for insects.
Apple Scab on Crabapples.
Small Fruits All Locations
Venturia inaequalis
Posted on: March 19, 2017 by Rich Guggenheim
The wet weather and cooler temperatures this spring has led to favorable conditions for apple scab to develop. Apple scab can lead to the defoliation of ornamental crabapples planted in the landscape.
The first visible symptoms of apple scab in the spring are pale, water-soaked spots the size of a pinhead on the new leaves.
Sanitation practices are the best cultural way to manage the spread of this fungal disease. Avoid water on the leaves to prevent spread of fungal spores.
» https://pnwhandbooks.org/plantdisease/host-disease/crabapple-malus-spp-scab
» http://extension.oregonstate.edu/gardening/how-control-apple-scab
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7413.html
» http://utahpests.usu.edu/ipm/htm/fruits/fruit-insect-disease&apple-scab
Biting flies
Landscape and Garden All Locations
Diptera spp.
Posted on: March 18, 2017 by Rich Guggenheim
Biting flies are expected to hatch and emerge soon.
» http://extension.colostate.edu/topic-areas/insects/biting-flies-5-582/
Yellow Jackets
Landscape and Garden All Locations
Vespula spp., Dolichovespula arenaria
Posted on: March 16, 2017 by Rich Guggenheim
Female Yellowjackets, the queens, who overwintered will be flying about looking for areas to establish new colonies. Now is the time to treat and prevent.
Dormant oils
Landscape and Garden All Locations
Posted on: March 15, 2017 by Rich Guggenheim
Dormant oils should be applied when temperatures are cool and plants are still dormant, before bud break. Dormant oils can be used to control insects on multiple varieties of landscape plant material as well as fruit.
University of Idaho Extension Needs Assessment
Announcements All Locations
Posted on: February 22, 2017 by Jerry Neufeld
University of Idaho Extension is in the process of conducting a state-wide needs assessment. We want to learn from the residents of Idaho issues we should be addressing, barriers to participating in our programs and the best ways to distribute our research based information. Please assist us by completing the survey at the following link below. It should only take about 5 minutes. Please complete the survey by March 10. Thanks for your participation.
» https://uidaho.co1.qualtrics.com/jfe/form/SV_1NcsyChWGaqXHbD
Vole Damage to Landscapes
Landscape and Garden All Locations
Voles - Microtus
Posted on: February 20, 2017 by Rich Guggenheim
Vole Damage is currently being seen throughout the area. As snow melts, the damage and tunneling caused by voles is evident.
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7439.html
» http://extension.usu.edu/files/publications/publication/NR_WD_009.pdf
Springtails emerging
Landscape and Garden All Locations
Springtails -order Collembola
Posted on: February 20, 2017 by Rich Guggenheim
Springtails are a small insect which you may notice on warm, dry sides of buildings. As temperatures rise and the ground begins to dry down, you may notice them congregating in said areas and invade human dwellings.
The key to managing springtails is to reduce moisture and excess organic matter in gardens, plant pots, and around building foundations. Also screen or caulk cracks that provide entryways for springtails into homes. Pesticides should not be necessary and won’t provide long-term control by themselves.
Insecticide sprays are generally not recommended for springtail management.
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn74136.html
» http://extension.colostate.edu/topic-areas/insects/springtails-5-602/
» http://extension.usu.edu/files/publications/factsheet/springtail01.pdf
Cull Onion Disposal 2017
All Crops All Locations
Onion root maggot
Posted on: February 16, 2017 by Jerry Neufeld
Idaho has extended the deadline to dispose of cull onions from March 15 to April 15. The link below from KTVB has more information.
» http://www.ktvb.com/news/local/idaho-extends-deadline-for-farmers-to-dispose-of-bad-onions/408942971
Apply pre-emergent herbicide
Landscape and Garden All Locations
Weeds
Posted on: February 11, 2017 by Rich Guggenheim
As the snow melts, some fall germinating weeds will be visible. Spring germinating weeds will begin to germinate as soil temperatures rise. Pre-emergence herbicides and corn gluten can be effect in preventing the seeds from germinating. To control already germinated seeds, it is best to pull, hoe, or use herbicides formulated to control the type of weed you are targeting. Always read and follow all label directions!
For more information, contact your local Extension Office.
» http://extension.psu.edu/plants/green-industry/news/2013/preemergence-herbicides-for-landscape-use
» http://extension.psu.edu/plants/green-industry/news/2013/preemergence-herbicides-for-landscape-use
Snow Mold in lawns
Landscape and Garden All Locations
Typhula incarnata
Posted on: February 11, 2017 by Rich Guggenheim
Now that the snow is melting off the grass, you may be noticing snow mold. Here is what you need to know to manage it:
Rapid drying and warming will lessen the outbreak of disease.
Remove snow to allow better drainage and remove the mycelial crust on infected turf by raking. This will help recovery of the grass.
Lightly applying a low dose of nitrogen fertilizer in the spring will promote new growth.
When applied in the fall, fungicides can be useful in controlling disease, but are not effective when applied in late winter or early spring!
Additionally, for pink snow mold it’s important to maintain low soil pH and balanced soil fertility.
Aeration of your lawn will help remove thatch and allow for oxygen to penetrate the soil and reach the roots. This will help your lawn recover more quickly. This is also a good time to reseed any areas which may need to be reseeded.
For more information, contact your local county extension office!
» http://extension.usu.edu/files/publications/publication/snow-mold08.pdf
» http://extension.usu.edu/files/publications/publication/snow-mold08.pdf
8th Annual Soil Health Symposium
Announcements All Locations
Posted on: February 6, 2017 by Bill Buhrig
Soil health enthusiasts are invited to attend the 8th annual Soil Health Symposium February 16 at the Four Rivers Cultural Center in Ontario, OR. The registration form is attached as well as a link to the Payette SWCD website for more info. There is also a workshop the morning of February 17 that attendees can register for as well.
Early registration closes February 10th so do not delay!
» 2017_Soil_Health_Symposium_Registration_Form_with_Schedule.pdf
Zinc Phosphide Training for Belding Ground Squirrel Control - Feb 22
All Crops All Locations
Posted on: February 2, 2017 by Stuart Reitz
For producers raising hay, such as alfalfa, grass, mixed alfalfa/grass and permanent or seasonal pasture, in MALHEUR, HARNEY, LLAKE, BAKER, CROOK, DESCHUTES and KLAMATH Counties with Belding Ground Squirrel issues, Zinc Phosphide is a treatment option. A training session will be held in Ontario on February 22 to discuss the Restricted Use 24(c) pesticide label for Zinc Phosphide. This will be held from 12:30-2:30 pm at the Four Rivers Cultural Center 676 SW 5th AVE Ontario, OR 97914. This is at the conclusion of our Malheur County Pest Management Short Course.
An applicators license and this training are mandatory for producers who wish to purchase and use product. Laurie Gordon from the Oregon Department of Agriculture will be providing this instruction.
There is no cost to attend but give us a call 541-881-1417 to RSVP and we will have enough copies of the materials to be handed out. This annually-required training will be effective for the 2017 growing season. Two pesticide credits will be available for applicators who have not taken this class already in 2017.
Next Week - Cereal Schools in Southern / Southeastern Idaho
Small Grains All Locations
Economics
Posted on: January 31, 2017 by Juliet Marshall
Stepping Over Dollars to Pick Up Pennies - We are focusing on economics for this years' cereal schools. Hope to see you there!
Locations -
Feb 7 Burley, Morey’s Steak House, 219 E. 3rd Street
Feb 8 Pocatello, Red Lion Hotel, 1555 Pocatello Creek Road
Feb 9 - Idaho Falls, Residence Inn, 635 West Broadway
Feb 9 - Ashton, Trails Inn Restaurant, 213 2nd St
Feb 10 - Preston, Robinson Building, 186 West 2nd North
ALL schools start at 8:30 AM and have a similar agenda (only three were posted here)
» http://www.uidaho.edu/extension/cereals/scseidaho/events
» Burley
Farm Storage Facility Loans
All Crops All Locations
Posted on: January 25, 2017 by Stuart Reitz
Farm Storage Facility Loans
• Producers may obtain low-interest loans to replace storage facilities damaged by this winter's weather. This could apply to roof collapses of storage facilities but the facility must be producer owned. This means the farmer who grew the crop must also be storing the crop. Loan does not apply if a farmer is storing crops of someone else. A producer may borrow up to $500,000 per loan, with a minimum down payment of 15 percent. Loan terms are up to 12 years, depending on the amount of the loan. Producers must demonstrate storage needs based on three years of production history.
• FSA also provides a microloan option that, while available to all eligible farmers and ranchers, also should be of particular interest to new or small producers where there is a need for financing options for loans up to $50,000 at a lower down payment with reduced documentation. The interest rate changes every month but averages at 2 to 3 percent.
• See fact sheet for more details: https://www.fsa.usda.gov/Assets/USDA-FSA-Public/usdafiles/FactSheets/2016/2016_farm_storage_facility_loans.pdf
• Please contact your local FSA office for additional information.
Storm Damage to Trees and Landscapes Possible
Landscape and Garden All Locations
Storm Damaged Trees
Posted on: January 7, 2017 by Rich Guggenheim
There is a high likelihood that the forecasted ice and snow will cause storm damage to trees which will need proper pruning. Storm damage to trees can be prevented through proper structural pruning while the tree is young. For more information on pruning storm damage trees, contact your local Extension Office or a certified arborist.
If your trees are damaged as a result of snow, wind, or ice, here is what you need to know:
First, Check for hazards. Before approaching a tree, examine your surroundings to avoid making contact with downed utility lines or standing under broken, hanging branches.
Contact city officials if necessary. Trees between the street and a city sidewalk may be the responsibility of city crews.
Assess the damage. If a tree is healthy overall and still possesses its leader (the main upward branch), most of its major limbs and 50 percent or more of its crown, the chance is good for a complete recovery.
Be careful knocking snow off branches. This may cause the branches to break. If you must remove snow, gently push up on branches from below to prevent adding additional stress.
Remove broken branches. This minimizes the risk of decay and insects or diseases entering the wound. Prune at the branch collar - the point where a branch joins a larger one - and be mindful of
potential pent-up energy if the branch is twisted or bent.
Don't over-prune. With the loss of some branches, a tree may look unbalanced, but most trees quickly grow new foliage that hides bare areas.
Don't try to do it all yourself. If the job requires running a chainsaw overhead, sawing from a ladder or removing large branches or entire trees, contact an insured, certified arborist.
Professionals often are listed in the phone book under "tree service"
If you decide to prune your own tree you need to know how storm-damaged trees should be pruned.
First, focus on cleaning (removing broken and damaged limbs) keeping in mind
the structural integrity of the tree. Realize that you may have to accept less than
ideal pruning techniques by “Mother Nature”.
Second, focus on thinning and/or reducing to restore the tree’s structural integrity
and shape to the extent possible. This may take place over a period of years.
The maximum amount of tree canopy that can be removed without putting the tree
and its root system under stress includes the live wood/foliage removed by the
storm. When Mother Nature removes too much live wood/foliage, limit pruning to
cleaning. On storm damaged trees where excessive live wood and foliage was removed by storm damage, wait until the roots and crown stabilize (as measured in canopy
growth) before doing thinning, reducing, or other structural pruning. This may be
a multi-year period.
Keep the tree if it can be pruned back to structurally sound wood and will be
aesthetically pleasing. Often when one side of the tree is gone, the best option is to
remove the entire tree
» http://extension.illinois.edu/icedamage/
» http://www.extension.umn.edu/environment/trees-woodlands/storm-damage-to-landscape-trees/
» http://static.colostate.edu/client-files/csfs/pdfs/FINAL_Storm_Damage_Quick_Guide.pdf
Pesticide Stewardship Conference
All Crops All Locations
Posted on: December 20, 2016 by Jeff Miller
UI Extension and ISDA are hosting a Pesticide Stewardship Conference on February 1-2, 2017 at the Riverside Hotel in Boise. The conference begins at 11:30 am on February 1. Check-in begins at 10:30.
Registration is online through the University of Idaho (see attached link).
Please see the attached flyer for details. The plan is to offer 10 pesticide recertification credits. Dr. Bob Wolf, the national expert on pesticide drift and technology, will be presenting several times during the conference.
» https://www.regonline.com/builder/site/Default.aspx?EventID=1898325
2016 Annual Survey Gift Cards
All Crops All Locations
Posted on: December 19, 2016 by Jerry Neufeld
Thanks to everyone that completed the 2016 Pest Alert Evaluation Survey. The winners of the $75 gift cards to the Texas Roadhouse are: Nate McBride, Kyle Carpenter and Paul Rasgorshek. Gift cards will be emailed to you.
Salt Damage to Plants from Deicers.
Landscape and Garden All Locations
Plant and Animal friendly de-icers.
Posted on: December 16, 2016 by Rich Guggenheim
Many deicers contain various formulations of salts which can be damaging or toxic to plants, animals, and structures. Consider plant and pet friendly alternatives for de-icing agents in and around your homes if this is a concern.
» http://idahomastergardener.blogspot.com/2016/12/plant-and-animal-friendly-deicers.html
Prevention of Snow Mold in Lawns Starts Now
Landscape and Garden All Locations
Snow Mold
Posted on: December 15, 2016 by Rich Guggenheim
Snow Mold, which can impact lawns in the spring, may be avoided by not piling snow on lawns now, or by applying fungicides before snow accumulation.
Proper fertilization and aeration of turf in the fall and winter can aid in creating stronger lawns that are more resilient to snow mold.
For more information on Turf Management, contact your local University of Idaho Extension Office.
» http://ucanr.edu/datastoreFiles/268-607.pdf
» http://extension.usu.edu/files/publications/publication/snow-mold08.pdf
2017 Idaho Potato Conference
Potato All Locations
Posted on: November 28, 2016 by Jeff Miller
The 49th Idaho Potato Conference and 38th Ag Expo will be held January 17, 18, and 19, 2017 at Idaho State University. An announcement and registration form are attached. Also, the link to the conference web page is included below.
» https://www.uidaho.edu/cals/potatoes/conferences/idaho-potato-conference
Pesticide Applicator Seminar
All Crops All Locations
Posted on: November 23, 2016 by Lance Ellis
A Pesticide Applicator Seminar will be held December 9, 2016 from 8:00 am to 12: 15 pm at the Fremont County Extension Office. No fee will be charged for this seminar. Four ISDA Pesticide Recertification credits are available. The topics to be covered are outlined in the attached flier. Contact Lance Ellis at at (208) 624-3102 or at ellis@uidaho.edu for more information.
Seedlings for Conservation
Landscape and Garden All Locations
Seedlings for Conservation
Posted on: November 23, 2016 by Rich Guggenheim
We are announcing our &quot;Seedlings for Conservation&quot; program! We have trees, shrubs, perennials, and grasses for sale. You will find a wide assortment of plant material to help you conserve energy, water, soil, and attract wildlife and pollinators! These plants make great windbreaks, snow fences, and sound barriers. Order soon though, popular varieties of trees sell out very quickly. Trees will be available to pick up from the UI Extension Office in Caldwell in late March/early April!
Download our order form now.
Call 208-459-6003 for more information.
» https://drive.google.com/drive/my-drive
» http://cru.cahe.wsu.edu/CEPublications/pnw0005/pnw0005.pdf
» file:///Users/richg/Downloads/Plant%20Your%20Seedlings%20Right.pdf
» http://static.colostate.edu/client-files/csfs/pdfs/08byrgd-www.pdf
Become an Idaho Master Gardener Volunteer.
Announcements All Locations
Posted on: November 22, 2016 by Rich Guggenheim
Become an Idaho Master Gardener Volunteer. Applications are due December 16th. Classes will be available beginning January 17th and volunteers may choose from either a Tuesday evening class from 6-9 PM or on Wednesday morning class from 9am to 12 Noon. The cost is $165 which includes the 40 hours of course training and 40 hours of practicum. For more information contact the University of Idaho Extension Office in Canyon County at 459-6003.
» https://drive.google.com/open?id=0B88K2B0J0jApSi1YTm8xYTJFSFU
» https://drive.google.com/open?id=0B88K2B0J0jApTjhzV2FhRldiUEU
Miller Research Potato Pest Management Seminar
Potato All Locations
Posted on: November 15, 2016 by Jeff Miller
Miller Research LLC will be holding its annual potato pest management seminar on January 10, 11, and 12. The same program will be held each day. Seating in each session is limited to 50. The meetings will be held at the Miller Research facility located near Rupert, ID (426 E 200 N). Lunch will be provided at no cost. See the attached flier for the agenda. Please RSVP as to which session you would like to attend to Jeff Miller at 208-531-5124 or by email at: jeff@millerresearch.com. ISDA pesticide recertification credits and CCA credits (Integrated Pest Management) have been requested. Please share this notice with any interested parties.
Late blight in potatoes in 2016
Potato All Locations
Late Blight
Posted on: November 2, 2016 by Jeff Miller
Late blight has been confirmed from one field in the Mini-Cassia area. The tubers came from a commercial potato field which was not located near any seed production. Late blight was not observed in the field during the growing season. Symptom expression during the season was likely minimal due to unfavorable weather conditions. From a management point of view, it is likely that this find at this point of the season is not important. However, it shows that the disease was present in 2016.
2016 Idaho Association of Plant Protection
All Crops All Locations
Posted on: October 24, 2016 by Jeff Miller
The finalized program for the 2016 Idaho Association of Plant Protection meeting is now available. The meeting will be Wednesday and Thursday November 2-3 at the Sawtooth Best Western in Jerome. Lunch will be provided before the meeting on Wednesday. CCA and ISDA credits will be available both days. Cost of attending in $15 regardless of whether you attend both days or only one.
ISDA ANNOUNCES WORKER PROTECTION STANDARD TRAINING FOR AG OPERATORS
All Crops All Locations
Posted on: October 12, 2016 by Jerry Neufeld
ISDA is conducting a series of workshops where you can learn about the upcoming changes to the Worker Protection Standard. Click on the pdf below for more information about the dates and locations.
Peach Leaf Curl Treatment
Landscape and Garden All Locations
Taphrina deformans
Posted on: October 12, 2016 by Rich Guggenheim
Peaches are really close to leaf fall and the need for an application to prevent peach leaf curl. Lime sulfur or Ziram work great for commercial growers. Home grown trees will need something but avoid Monterey Liqui-Cop as it did not work. Ortho MAX Garden Disease Control was a little better than nothing. Bottom line for home growing - replace with a resistant tree after the current ones dies.
» https://pnwhandbooks.org/plantdisease/host-disease/peach-prunus-persica-leaf-curl
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7426.html
» https://extension.usu.edu/files/publications/factsheet/peach-leafcurl.pdf
Frost Alert
Landscape and Garden All Locations
Frost
Posted on: October 11, 2016 by Rich Guggenheim
Frost is forecasted for much of the Treasure and parts of the Magic Valley Tuesday night and Wednesday morning. Protect tender plants. Be sure to cover tender plants. Information on season extension and frost protection is found in the links below.
» http://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1002.pdf
» https://www.uky.edu/Ag/CCD/introsheets/extension.pdf
» https://www.youtube.com/watch?v=BVpO-3s9aZA&index=93&list=PL1964BF0FA26DF728
» https://www.youtube.com/watch?v=_7fSZrYLeWk&index=9&list=PLDB718A3689D44722
Potato psyllid monitoring winds down
Potato All Locations
potato psyllids
Posted on: September 23, 2016 by Erik Wenninger
September 23, 2016 – Potato psyllid monitoring winds down
As many fields have been vine killed and/or harvested, the psyllid sampling season is winding down. Sampling continued in only a handful of fields this week and will all but cease next week.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Gooding (1 field), Twin Falls (1 field), Jerome (2 fields), Minidoka (1 field), and Cassia (4 fields).
This week, we collected 44 psyllids from sticky cards (37 from Light sites and 7 from Intense sites). We found psyllids in 8 of the 10 fields (80%) that were sampled this week. Total captures declined in part because sampling has ceased in most fields and likely also because of cooler weather.
We ran Lso testing on a subset of psyllids collected last week (up to ten psyllids per site). So far, none of the psyllids tested last week was positive for Lso. As always, the online spreadsheets (see below) may be updated at any time during the week as more data are gathered.
As fields are harvested, we urge everyone to familiarize themselves with ZC tuber symptoms. See link below for description and photos of ZC symptoms, and please take suspicious samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
ISDA ANNOUNCES FALL SCHEDULE FOR UNUSABLE PESTICIDE DISPOSAL
All Crops All Locations
Posted on: September 22, 2016 by Jerry Neufeld
Click on the file below for information about the ISDA Unusable Pesticide Disposal Program that will be taking place next week in the Twin Falls, Gooding and Nampa areas.
Psyllid captures continue to decline
Potato All Locations
potato psyllids
Posted on: September 16, 2016 by Erik Wenninger
Potato psyllids were collected this week on sticky traps in potato in the following counties: Payette (1 field), Owyhee (1 field), Canyon (9 fields), Ada (2 fields), Elmore (1 field), Gooding (2 fields), Twin Falls (8 fields), Jerome (5 fields), Minidoka (2 fields), and Cassia (7 fields). Additionally, from one field in Gooding County, we captured 4 adults in a vacuum sample and 2 nymphs in a leaf sample.
This week, we collected 548 psyllids from sticky cards (254 from Light sites and 294 from Intense sites). Of the total 552 psyllids captured this week, 198 came from the Treasure Valley. We found psyllids in 38 of the 51 fields (75%) that were sampled this week. Total captures are declining in part because sampling has ceased in many fields (due to vine kill or harvest) and likely also because of cooler weather.
We ran Lso testing on a subset of psyllids collected last week (up to ten psyllids per site). So far, none of the psyllids tested last week was positive for Lso. About 50% of samples remain to be tested, and we expect to have those Lso results early next week. As always, the online spreadsheets (see below) may be updated at any time during the week as more data are gathered.
We continue to urge growers to maintain their IPM programs, especially in late-maturing fields, and to be on the lookout for plants exhibiting ZC symptoms. Foliar symptoms need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Psyllid numbers tick down slightly
Potato All Locations
potato psyllids
Posted on: September 9, 2016 by Erik Wenninger
Potato psyllids were collected this week on sticky traps in potato in the following counties: Payette (1 field), Owyhee (5 fields), Canyon (9 fields), Ada (2 fields), Elmore (1 field), Gooding (2 fields), Twin Falls (9 fields), Jerome (7 fields), Blaine (1 field), Minidoka (6 fields), Cassia (5 fields), and Bingham (1 field). Additionally, potato psyllid nymphs (37 total) were captured on leaf samples from Canyon County (2 fields) and Ada County (2 fields), and 30 potato psyllid adults were captured in vacuum samples taken from two Intense fields in Canyon counties.
This week, we collected 1,116 psyllids from sticky cards (824 from Light sites and 292 from Intense sites). Of the total 1,116 psyllids captured this week, 674 came from the Treasure Valley. We found psyllids in 40 of the 49 fields (82%) that were sampled this week. To put these numbers into perspective, we captured a total of approximately 1,100 psyllids for the entire year during each of the 2013 and 2015 seasons.
With the recent increase in psyllid numbers and attrition of our summer help, we ran Lso testing on a subset of psyllids collected last week (up to ten psyllids per site). So far, none of the psyllids tested last week was positive for Lso. About 50% of samples remain to be test, and we expect to have those Lso results early next week. As always, the online spreadsheets (see below) may be updated at any time during the week as more data are gathered.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following infection, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
September 2, 2016 – Psyllid numbers continue to rise
Potato All Locations
potato psyllids
Posted on: September 2, 2016 by Amy Carroll
The two fields in western Idaho that were reported two weeks ago to exhibit high incidence of ZC symptoms were found to be negative for ZC after molecular testing. Stem-end discoloration appears to be prevalent this year, and that might explain the misdiagnosis by field personnel. The symptomatic plants observed by Kimberly R&E Center staff did test positive for ZC, so we do have confirmed ZC at least in the Magic Valley.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (1 field), Gooding (2 fields), Twin Falls (8 fields), Jerome (9 fields), Blaine (1 field), Minidoka (3 fields), Cassia (5 fields), and Power (1 field).. Additionally, potato psyllid nymphs (9 total) were captured on leaf samples from Ada County (2 fields) and Jerome County (1 field), and 24 potato psyllid adults were captured in vacuum samples taken from three Intense fields in Canyon and Gooding counties.
This week, we collected 1,539 psyllids from sticky cards (1,138 from Light sites and 401 from Intense sites). Of the total 1,563 psyllids captured this week, 1,382 came from the Treasure Valley. We found psyllids in 54 of the 82 fields (66%) that were sampled this week. To put these numbers into perspective, we captured a total of approximately 1,100 psyllids for the entire year during each of the 2013 and 2015 seasons.
With the recent increase in psyllid numbers and attrition of our summer help, we ran Lso testing on a subset of psyllids collected last week (up to ten psyllids per site). So far, none of the psyllids tested last week was positive for Lso. About 50% of samples remain to be test, and we expect to have those Lso results early next week.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following infection, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Harvest and Minimizing Foreign Material in Potatoes: On-line educational videos now available.
Potato All Locations
Posted on: August 30, 2016 by Nora Olsen
Harvest and Minimizing Foreign Material: On-line educational videos now available.
Foreign material is any material that is not the potato tuber. It is "trash" or "garbage" in potatoes. Many foreign materials originate in the field, but others enter the product stream through equipment and during storage and handling. Whether potatoes are destined for the fresh market or processing, foreign material is a great concern to the Idaho potato industry. By minimizing foreign material in the field, in storage, and in the processing plant, growers and processors help maintain a high-quality product, safe standards, and consumer confidence.
The video “Continuing to Manage Foreign Material for Quality Idaho Potatoes” outlines ways you can reduce unwanted or foreign material in your potatoes. The video (English and Spanish version) are available on-line at:
Spanish edition:
https://vimeo.com/144655993
English edition:
https://vimeo.com/144567198
Additional information “Managing Foreign Material for Quality Idaho Potatoes” is available at http://www.uidaho.edu/cals/potatoes/research/storage/potato-storage-management.
» http://www.uidaho.edu/cals/potatoes/research/storage/potato-storage-management.
Powdery Mildew Control for Grapes
Grapes All Locations
Powdery Mildew in grapes.
Posted on: August 30, 2016 by Rich Guggenheim
Powdery Mildew is being seen on grapes. The time to control this fungus is early in spring. See attached links or contact your local University of Idaho Extension Office for more information.
» http://ipm.ucanr.edu/PMG/r302100311.html
» http://articles.extension.org/pages/31529/powdery-mildew-of-grapes
» http://pnwhandbooks.org/plantdisease/grape-vitis-spp-powdery-mildew
» https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em9067.pdf
Apply First Application of Fall Lawn Fertilizer Now.
Landscape and Garden All Locations
Turfgrass lawns
Posted on: August 29, 2016 by Rich Guggenheim
It is time to aerate and apply fertilizer to your lawn. Application should be
at 1 lb N per 1,000 sq ft. Unless lawns are very weak, avoid early-spring
applications since grass normally grows vigorously by itself at that time.
» http://web.cals.uidaho.edu/idahogardens/2012/08/when-to-apply-fertilizer-to-turfgrass/
» http://extension.colostate.edu/topic-areas/yard-garden/lawn-care-7-202/
» https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/ec1278.pdf
Psyllid numbers remain high
Potato All Locations
potato psyllids
Posted on: August 26, 2016 by Erik Wenninger
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (1 field), Gooding (2 fields), Twin Falls (7 fields), Jerome (6 fields), Minidoka (2 fields), and Cassia (4 fields). Additionally, potato psyllid nymphs (8 total) were captured on leaf samples from Ada County (2 fields) and Canyon County (1 field), and 42 potato psyllid adults were captured in vacuum samples taken from four Intense fields in Canyon and Ada counties.
This week, we collected 957 psyllids from sticky cards (727 from Light sites and 230 from Intense sites). Of the total 999 psyllids captured this week, 950 came from the Treasure Valley. We found psyllids in 46 of the 99 fields (46%) that were sampled this week. To put these numbers into perspective, we captured a total of approximately 1,100 psyllids for the entire year during each of the 2013 and 2015 seasons.
With the recent increase in psyllid numbers and attrition of our summer help, we ran Lso testing on a subset of psyllids collected last week (up to ten psyllids per site). So far, none of the psyllids tested last week was positive for Lso. About 25% of samples remain to be test, and we expect to have those Lso results early next week.
We scouted a few fields in the Magic Valley that have had Lso-positive psyllids this year and found no evidence of zebra chip in the plants that we sampled. This is encouraging. However, because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following infection, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
ZC found in Magic Valley
Potato All Locations
Posted on: August 24, 2016 by Erik Wenninger
A potato field in the Magic Valley was found to have potato plants exhibiting classic ZC symptoms in both the tubers and foliage. Tubers are being sent for confirmation by moleculr testing. Given that we have now found ZC in both the Treasure and Magic Valleys and have been capturing relatively high numbers of potato psyllids this season, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms
Photos of typical ZC symptoms exhibited by foliage and tubers may be found in this alert as well as at the link below. Be aware that symptoms in tubers may not be show through the entire tuber or in all tubers under a single plant.
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
August 19, 2016 – First incidence of ZC in Idaho during 2016; psyllid numbers still high
Potato All Locations
potato psyllids
Posted on: August 19, 2016 by Amy Carroll
At least two fields in western Idaho were found to exhibit a high incidence of severe ZC symptoms in tubers. The incidence is estimated to be upwards of 60%. Samples are on their way to campus for confirmation of ZC by molecular testing. Unfortunately, these fields were not part of our psyllid monitoring network; however, this development supports the need to maintain an IPM program targeting psyllids through the end of the season.
Only one potato psyllid collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Lso-positive psyllids were found in the following counties: Payette (1 field).
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (2 fields), Gooding (2 fields), Twin Falls (5 fields), Jerome (3 fields), Minidoka (2 fields), and Cassia (4 fields). Additionally, potato psyllid nymphs (22 total) were captured on leaf samples from Ada County (2 fields) and Canyon County (2 fields), with 38 potato psyllid adults being captured from vacuum samples taken from four Intense fields in the following counties: Canyon, Ada, and Gooding.
We collected 690 psyllids this week from sticky cards (556 from Light sites and 134 from Intense sites). Of the total 728 psyllids captured this week, 643 came from the Treasure Valley. We found psyllids in 43 of the 83 fields (52%) that were sampled this week. We had several cards from sites that did not come in this week, but will be processed when they hopefully arrive next week.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following inoculation, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
August 12, 2016 – Psyllid numbers fall compared to recent weeks
Potato All Locations
potato psyllids
Posted on: August 12, 2016 by Amy Carroll
Only three potato psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Lso-positive psyllids were found in the following counties: Canyon (1 field) and Gooding (1 field). One nymph collected from a leaf sample on an Intense field in Canyon County tested positive.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (1 field), Elmore (2 fields), Gooding (3 fields), Twin Falls (6 fields), Jerome (2 fields), Minidoka (2 fields), and Cassia (1 field). Additionally, potato psyllid nymphs (3 total) were captured on leaf samples from Ada County (1 field) and Jerome County (1 field), with two potato psyllids being captured from a vacuum sample taken from one Intense field in Canyon County.
We collected 260 psyllids this week from sticky cards (190 from Light sites and 70 from Intense sites). Of the total 262 psyllids captured this week, 233 came from the Treasure Valley. We found psyllids in 39 of the 97 fields (40%) that were sampled this week.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following inoculation, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Cercospora Leaf Spot and Black Bean Aphid in Sugarbeets
Sugarbeets All Locations
Cercospora Leaf Spot and Black Bean Aphid
Posted on: August 8, 2016 by Jerry Neufeld
AMSCO Pathologist Dr. Oliver Neher is reporting that Cercospora leaf spot has been confirmed in sugarbeet fields in the Wendell and Rupert areas. The recent weather conditions have been favorable for disease development. According to the 2016 PNW Plant Disease Handbook, “High humidity or free moisture and high temperatures (77°F to 95°F days, nights above 60°F) favor infection”. Many of the currently grown high-yielding sugarbeet varieties are susceptible or moderately susceptible to Cercospora. The 2016 PNW Plant Disease Handbook lists several fungicides that can be applied to treat this disease. Click on the link below for this information. The other link below directs to an extension bulletin published by the North Dakota State University and contains additional information for disease management. Dr. Neher is also reporting that black bean aphid is being found in these areas. You may be able to tank mix insecticides for black bean aphid with fungicides used for Cercospora. Contact your crop consultant from Amalgamated Sugar Company for more information.
» http://pnwhandbooks.org/plantdisease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
August 5, 2016 – Positive psyllids in Payette, Canyon, and Ada counties
Potato All Locations
potato psyllids
Posted on: August 5, 2016 by Amy Carroll
Several potato psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Lso-positive psyllids were found in the following counties: Payette (1 field), Canyon (7 fields), and Ada (1 field). This is fewer than the previous two weeks.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (2 fields), Gooding (1 field), Twin Falls (4 fields), Jerome (6 fields), Minidoka (3 fields), Cassia (4 fields), Power (3 fields), and Bingham (1 field). Additionally, potato psyllid nymphs (26 total) were captured on leaf samples from Ada County (2 fields) and Canyon County (2 fields), with three potato psyllids being captured from a vacuum sample taken from one Intense field in Canyon County.
We collected 379 psyllids this week from sticky cards (263 from Light sites and 116 from Intense sites). Of the total 379 psyllids captured this week, 308 came from the Treasure Valley. We found psyllids in 48 of the 101 fields (48%) that were sampled this week.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following inoculation, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Corn Smut
Landscape and Garden All Locations
Corn Smut (Ustilago maydis)
Posted on: August 5, 2016 by Rich Guggenheim
Corn Smut has been spotted on sweet corn in gardens.
Corn Smut is edible.
There are no chemical controls for infected plants. Control is limited to a few cultural practices. Remove and dispose of smut galls before they rupture and release the black sooty spores. Remove and destroy all plant debris in the fall and practice crop rotation the following year. Avoid plant injury during cultivation, as this promotes disease development.
» http://sweetcorn.illinois.edu/Common-smut/Recipes.htm
» http://www.extension.umn.edu/garden/yard-garden/vegetables/corn-smut/
» http://www.apsnet.org/edcenter/intropp/lessons/fungi/Basidiomycetes/Pages/CornSmut.aspx
Powdery Mildew on Cucurbit crops
Landscape and Garden All Locations
Powdery Mildew
Posted on: August 5, 2016 by Rich Guggenheim
Powdery Mildew has been spotted on cucurbit crops. Applications of fungicides are preventative, not curative. Best management practices include:
Plant in a sunny location wherever possible
Make sure there’s good air circulation (through plant spacing and pruning)
Promote steady growth with moderate application of nitrogen fertilizer (or use a time release fertilizer)
In a sunny dry location, an occasional spray of water can be used to wash the PM from the plant
Remove and discard infected material, take special care in the fall to reduce the amount material available for over wintering
» https://www.mastergardeners.org/publications/powderyMildew.html
» http://ipm.ucanr.edu/PMG/r116100711.html
» http://vegetablemdonline.ppath.cornell.edu/factsheets/Cucurbits_PM.htm
» http://articles.extension.org/pages/30604/managing-cucurbit-powdery-mildew-organically
Grassy Weed Control in Turf
Landscape and Garden All Locations
Grassy weeds in lawn
Posted on: August 4, 2016 by Rich Guggenheim
Weeds of various types in turf and laws are being brought in for identification and control. Proper control will require identification of the weed, a service provided for free by your local University of Idaho Extension Office.
Non chemical control methods including mowing your lawn as high as practical for your turf variety- usually 3-4 inches, deep watering of your lawn, proper fertilization usually in the fall, and core aeration can be very effective at aiding in control of weeds in your lawn.
» http://ipm.ucanr.edu/PMG/WEEDS/goosegrass.html
» https://njaes.rutgers.edu/pubs/e233/
» http://extension.colostate.edu/topic-areas/yard-garden/lawn-care-7-202/
July 29, 2016 – More Lso-positive psyllids found in Treasure and Magic Valleys
Potato All Locations
potato psyllids
Posted on: July 29, 2016 by Amy Carroll
Last week we reported on a sharp increase in the prevalence of Lso-positive psyllids relative to the previous weeks this season. Out of an abundance of caution to avoid reporting any false positives, we re-tested a subset of those positive psyllids and we stand by our original results. The sites during Week 9 with putative positive psyllids that we had labelled as “pending” are now labelled as “positive.”
In addition, several potato psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Lso-positive psyllids were found in the following counties: Payette (1 field), Owyhee (1 field), Canyon (6 fields), Twin Falls (2 fields), Minidoka (2 fields), and Cassia (1 field). Furthermore, two potato psyllid nymphs collected from leaf samples from a field in Ada County tested positive for Lso.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (2 fields), Twin Falls (8 fields), Jerome (2 fields), Cassia (2 fields), and Power (1). Additionally, potato psyllid nymphs were captured on leaf samples from 2 fields in Ada County, and two potato psyllids were captured from vacuum samples taken from Intense fields in Canyon and Ada County.
We collected 361 psyllids this week from sticky cards (246 from Light sites and 115 from Intense sites). Of the total 363 psyllids captured this week, 335 came from the Treasure Valley. We found psyllids in 40 of the 101 fields (40%) that were sampled this week.
Because of the recent prevalence of Lso and the relatively high numbers of potato psyllids that we have been collecting each week, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following inoculation, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Cicada Killer (Sphecius grandis)
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Cicada Killer (Sphecius grandis)
Posted on: July 29, 2016 by Rich Guggenheim
Cicada Killers are being brought into local Extension Offices. Cicada killers are very large wasps, ranging 3-5 cm in length and resemble a very large yellowjacket wasp. Control of cicada killers is rarely recommended and can be difficult to achieve. The insects are not aggressive and have a beneficial role in managing cicada populations.
» https://bspm.agsci.colostate.edu/files/2013/03/Cicada-Killers.pdf
» https://utahpests.usu.edu/schoolIPM/htm/pest-id-guide/stinging-insects/sand-wasps-cicada-killer
Wasps, Hornets, and YellowJackets
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Wasps, hornets, and yellowjackets
Posted on: July 29, 2016 by Rich Guggenheim
Wasps, hornets, and Yellowjackets are being seen in numerous yards and gardens this year.
Different methods, including non-chemical are available. Click the links below for more information.
» https://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1218.pdf
» http://extension.uidaho.edu/clearwater/files/2014/11/Homeowner-Guide-to-Minor-Stinging-Insects2.pdf
» http://extension.colostate.edu/topic-areas/insects/nuisance-wasps-and-bees-5-525/
Increase in Lso-positive psyllids in Treasure and Magic Valleys
Potato All Locations
potato psyllids
Posted on: July 22, 2016 by Erik Wenninger
Numerous potato psyllids collected last week tested positive for Lso (liberibacter), the bacterium that causes zebra chip. Lso-positive psyllids were found in the following counties: Payette (1 field), Owyhee (1 field), Canyon (4 fields), Twin Falls (3 fields), and Jerome (1 field).
This represents a sharp increase in the prevalence of Lso-positive psyllids relative to the previous weeks this season. We are quite certain that these results are accurate; however, out of an abundance of caution to avoid reporting any false positives, we are in the process of retesting several samples that did not show as strong a positive result as others. Those sites collected during Week 9 that we believe to be positive but are being retested are marked on the spreadsheet (links provided below) as “pending” in the “% Lso+ psyllids” column. We expect to update these data next week when results from the additional tests come in. We collected psyllids that we believe to be positive but that currently have a status of Lso “pending” in the following counties: Payette (2 fields), Owyhee (2 fields), Canyon (2 fields), Ada (1 field), and Jerome (1 field).
Regardless, there clearly has been an increase in the prevalence of Lso-positive psyllids as well as relatively high numbers of psyllids overall. Therefore, we urge growers to maintain their IPM programs targeting psyllids and to be on the lookout for plants exhibiting ZC symptoms over the coming weeks. Foliar symptoms should be manifested about three weeks following inoculation, but will need to be confirmed by examining and testing tubers. See link below for description and photos of ZC symptoms, and please take suspicious plant samples to the Kimberly R&E Center or to your local UI Extension Center.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (5 fields), Canyon (13 fields), Ada (2 fields), Elmore (1 field), Twin Falls (2 fields), Jerome (3 fields), Gooding (1 field), Minidoka (2 fields), and Cassia (6 fields).
We collected 245 psyllids this week from sticky cards (179 from Light sites and 66 from Intense sites). Two potato psyllids were collected in a vacuum sample on an Intense site in Canyon County, and four nymphs were found on leaf samples from an Intense site in Ada County. Of the total 247 psyllids captured this week, 152 came from the Treasure Valley. We found psyllids in 38 of the 103 fields (37%) that were sampled this week.
More information and resources on potato psyllids and ZC, including management, scouting recommendations, and ZC symptomology can be found at the links below.
http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://oregonstate.edu/dept/hermiston/sites/default/files/pnw633_0.pdf
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Tobacco Budworm in Roses, Petunias, Geraniums.
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Tobacco/ Geranium budworm (Helicoverpa virescens)
Posted on: July 21, 2016 by Rich Guggenheim
The Tobacco budworm (Heliothis virescens) causes damage to roses, petunias, geraniums, and the flower buds of other ornamental garden plants. Control methods include scouting and hand picking at dusk, roto-tilling, and planting less susceptible plant material.
On geraniums, insecticidal control is difficult because caterpillars are protected from applications inside the flowerbuds and stems. Consider planting ivy geraniums instead of standard geraniums.
On petunias pyrethrin insecticides can provide good control. Look for products containing the active ingredients permethrin, cyfluthrin, or bifenthrin. Always read and follow all label direction.
» http://extension.colostate.edu/topic-areas/insects/tobacco-geranium-budworm-5-581/
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/budworm.htm
Annual Fruit Field Day in Parma! Mark your calendars!
Landscape and Garden All Locations
Posted on: July 18, 2016 by Dian Roberson
The University of Idaho Annual Fruit Field Day will be held on Friday September 16; 2016, 8:30 am to 1:00 pm at the U of I Parma Research and Extension Center Pomology Orchard and Vineyard site, about 4 miles north of Parma, Idaho. The registration will start at 8:30 am and program will start at 9:00 am (sharp). Several cultivars of new table grapes, peaches, nectarines, apples, plums, quince, Asian pears, and other alternative fruits will be presented during the tour. See the attached document below!
July 15, 2016 – First Lso-positive psyllid found in Magic Valley this year
Potato All Locations
potato psyllids
Posted on: July 15, 2016 by Amy Carroll
One potato psyllid collected last week on a sticky card from a potato field in Jerome County tested positive for Lso (liberibacter), the bacterium that causes zebra chip. All other psyllids collected last week tested negative for Lso.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (3 fields), Canyon (11 fields), Ada (2 fields), Elmore (1 field), Twin Falls (4 fields), Jerome (1 field), and Gooding (1 field). This is the first potato psyllid captured in Gooding County this year.
We collected 100 psyllids this week from sticky cards (69 from Light sites and 30 from Intense sites). One potato psyllid was collected in a vacuum sample on an Intense site in Twin Falls County. Of the total 100 psyllids captured this week, 92 came from the Treasure Valley.
We had traps deployed in 105 of the 107 fields (98%) that will be monitored this year. We found psyllids in 27 of the 105 fields (26%) that were looked at this week.
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Curly Top Virus in Tomatoes
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Curly top Virus
Posted on: July 15, 2016 by Rich Guggenheim
Curly top virus has been spotted in tomatoes.
Visual symptoms of tomatoes infected with Curly top virus are leafs curl up and turn yellow wth purple along the veins.
Curly top virus is transmitted by the beet leafhopper. There are no effective chemical controls. Use row covers to protect tomato plants from leafhoppers.
» http://extension.colostate.edu/docs/pubs/garden/02949.pdf
» http://extension.usu.edu/files/publications/factsheet/curly-top-tomato08.pdf
» http://entoweb.okstate.edu/ddd/diseases/curlytop.htm
» http://cals.arizona.edu/yavapai/anr/hort/byg/archive/curlytopvirus2013.html
July 8, 2016 – Increasing psyllid numbers in Treasure Valley
Potato All Locations
potato psyllids
Posted on: July 8, 2016 by Amy Carroll
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Canyon (12 fields), Ada (2 fields), Elmore (1 field), Twin Falls (1 field), Jerome (1 field), and Power (1 field). We collected 99 psyllids this week from sticky cards (67 from Light sites and 32 from Intense sites).
Of the total 99 psyllids captured this week, 96 came from the Treasure Valley. Two of these psyllids were from vacuum samples taken from an Intense site in Canyon County.
We had traps deployed in 100 of the estimated 107 fields (93%) that will be monitored this year, although we are still waiting for cards from 10 sites to be delivered and processed. We found psyllids in 22 of the 90 fields (24%) that were looked at this week.
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
UI Cereals Field Days and Extension Variety Trials
Small Grains All Locations
Cereal Insects and Pathology, Cereals Breeding, Cereal Agronomy
Posted on: July 7, 2016 by Juliet Marshall
Come join our Cereals Field Days to learn about new cereal varieties and pests!
July 12th at Idaho Falls starting at 4 PM.
UI and Bonneville County Grain Growers
Meet at Marc Thiels
West side of road just north of W 17th South
2550 S 45th W
Idaho Falls, ID
July 13th at Aberdeen R&E Center, starting at 8:30 AM
1693 S 2700 W
Aberdeen, ID 83210
Powdery Mildew in Sugarbeets 2016
Sugarbeets All Locations
powdery mildew
Posted on: July 7, 2016 by Jerry Neufeld
Powdery mildew has been found by Amalgamated Sugar Company Crop Consultants in the Adrian, Oregon area. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure, applications with different chemistries should be repeated every 14 to 21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.
Click on the links below for the powdery mildew page in the PNW Plant Disease handbook.
» http://pnwhandbooks.org/plantdisease/sugar-beet-beta-vulgaris-powdery-mildew
Black Bean Aphid in Sugarbeets 2016
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Black Bean Aphid
Posted on: July 7, 2016 by Jerry Neufeld
Amalgamated Sugar Company Field Staff are reporting the Black bean aphids have been found in the Dry Lake Area of Canyon County. In 2015, UI Extension Entomologist Dr. Erik Wenninger posted this information about black bean aphids. The black bean aphid is a dark-bodied aphid, about 1/16 inch long; individuals may be winged or wingless. Aphids may be found on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field. Colonies can produce massive amounts of honeydew, which causes a black, sooty mold to cover the leaves.
There are no formal economic thresholds for insecticide treatment decisions for bean aphids, but treatment should be considered if fields are under heavy pressure. When scouting a field, it is important to sample plants in several representative areas across a field, because infestations may be patchy. Also, several predators (notably, lady beetles) and parasites attack bean aphids and may effectively suppress aphid populations. Therefore, it is advisable to assess natural enemy populations when making a decision on whether to apply insecticides. In addition to sugar beets, black bean aphids may be found in other crops, including beans and corn.
You may be able to tank mix insecticides for black bean aphid with fungicides used for powdery mildew. Make sure to read and follow the label and contact your Field Consultant from AMSCO for more treatment options.
For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook by clicking on the link below.
» http://insect.pnwhandbooks.org/agronomic/sugar-beet/sugar-beet-aphid
White Grub control methods need to be applied now.
Landscape and Garden All Locations
Lawn Grubs
Posted on: July 5, 2016 by Rich Guggenheim
July and August is the time to apply control methods for white grubs and June beetles.
One way to control them is to simply grow a vigorous lawn. Healthier plants have fewer pests and are more tolerant of infestations. Aerate lawns in the spring and fall, and apply fertilizer in the fall. Proper irrigation and mowing at a height of 3.5 to 4 inches will help establish and maintain a vigorous lawn.
Other options include insecticides such as imidacloprid.
Organic methods include Heterorhabditis spp. nematodes and or Steinernema carpocapsae nematodes.
Proper timing of insecticides is critical for effective control of lawn grubs.
» http://extension.colostate.edu/topic-areas/insects/billbugs-and-white-grubs-5-516/
» http://ipm.ucanr.edu/TOOLS/TURF/PESTS/inbill.html
» http://utahpests.usu.edu/htm/utah-pests-news/utah-pests-news-fall-2014/billbug-management/
2016 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 5, 2016 by Jeff Miller
The 2016 Miller Research Potato Pest Management Field Day will be held Wednesday, August 17 from 9:00-10:30 am. Please see the attached page for details.
New article on late blight and potato psyllid management
Potato All Locations
Late blight
Posted on: July 5, 2016 by Jeff Miller
Early season weather and the presence of late blight in 2015 has made the risk of late blight high for 2016. The attached article discusses some considerations for late blight management and also discusses some cautions when simultaneously treating for potato psyllids.
Summer Farm Festival at the Malheur Experiment Station
All Crops All Locations
Posted on: July 5, 2016 by Bill Buhrig
Everybody is invited to come an check out the annual Farm Festival and Field Day on July 13 at the Malheur Experiment Station just outside Ontario. There is a wide variety of tours and speakers that will provide something of interest for all. There will even be activities for youth and lunch at noon. Check out the attachment for more information. It will be a good time!
First psyllids found in Power and Bingham counties
Potato All Locations
potato psyllids
Posted on: July 1, 2016 by Erik Wenninger
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (2 fields), Canyon (12 fields), Ada (1 field), Elmore (1 field), Twin Falls (2 fields), Bingham (1 field), and Power (1 field). These are the first psyllid captures this year in Power and Bingham counties. We collected 48 psyllids this week from sticky cards (34 from Light sites and 14 from Intense sites).
We had traps deployed in 97 of the estimated 107 fields (91%) that will be monitored this year and found psyllids in 24 of the 97 fields (25%).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
VACANT POSITION - Agricultural Technician at University of Idaho, PARMA
All Crops All Locations
Posted on: June 30, 2016 by Olga Walsh
VACANT POSITION - Agricultural Technician at University of Idaho, PARMA RESEARCH & EXTENSION CENTER - QUALIFIED CANDIDATES ENCOURAGED TO APPLY HERE:
https://uidaho.peopleadmin.com/postings/14563
The Agricultural Technician will provide technical support to the PI and to the Research Technician as part of the cropping systems agronomy research and extension program by assisting in field and greenhouse experiments focused on plant nutrition, fertilizer and water use efficiency.
VACANT POSITION - Research Technician at University of Idaho, Parma ID
All Crops All Locations
Posted on: June 28, 2016 by Olga Walsh
VACANT POSITION - Research Technician at University of Idaho, PARMA RESEARCH & EXTENSION CENTER - QUALIFIED CANDIDATES ENCOURAGED TO APPLY HERE:
http://uidaho.peopleadmin.com/postings/14422.
The Research Technician will provide assistance to the PI as part of the cropping systems agronomy research and extension program, and will conduct field, greenhouse, and laboratory experiments focused on plant nutrition, fertilizer and water use efficiency.
Spider Mites!
Landscape and Garden All Locations
spider mite
Posted on: June 27, 2016 by Dian Roberson
With the hot dry weather in the forcast, be on the look out for spider mite damage. They attack evergreens, deciduous trees, and many other ornamental plants. They even like your veggies occasionally. You will probably not see the insect as they are as small as tiny specs of dust. They damage plants by rasping the cell surface so look for stippling or browning of needles. If you shake the plant over a white piece of paper and look closely you may see them moving around.
» http://insect.pnwhandbooks.org/hort/landscape/common/landscape-pests-spider-mite
» http://insect.pnwhandbooks.org/hort/landscape/common/landscape-pests-spider-mite
» http://extension.colostate.edu/topic-areas/insects/spider-mites-5-507/
June 24, 2016 – First potato psyllid found in Minidoka County
Potato All Locations
potato psyllid
Posted on: June 24, 2016 by Amy Carroll
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (2 fields), Owyhee (1 field), Canyon (10 fields), Ada (1 field), Jerome (1 field), Twin Falls (1 field), and Minidoka (1 field). This is the first psyllid captures this year in Minidoka County. We collected 35 psyllids this week from sticky cards (23 from Light sites and 12 from Intense sites).
We had traps deployed in 94 of the estimated 107 fields (88%) that will be monitored this year and found psyllids in 18 of the 94 fields (19%).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Aphids on Cole crops
Landscape and Garden All Locations
Aphid on Garden Crops
Posted on: June 24, 2016 by Rich Guggenheim
Aphids have been observed on numerous cole and other garden and ornamental crops in the Treasure Valley. Look for sticky residue and curled, distorted leaves. As fields of alfalfa and wheat are cut in the next few weeks, aphids and other insects can move from fresh cut fields into home gardens. Options for control include streams of water to dislodge the insect. See the attached for further information on aphid control.
» https://www.youtube.com/watch?v=jTZurTQzMus&feature=youtu.be
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7404.html
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/aphids.htm
Squash Bug Alert
Landscape and Garden All Locations
Squash Bug
Posted on: June 24, 2016 by Rich Guggenheim
Squash Bugs have been observed in home garden locations throughout the Treasure Valley. Control method options are attached.
» https://www.youtube.com/watch?v=SFMDcGDQOTY
» http://extension.usu.edu/files/publications/factsheet/ENT-120-08.pdf
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/sqshbug.htm
More psyllids found in Treasure and Magic Valleys
Potato All Locations
potato psyllids
Posted on: June 17, 2016 by Erik Wenninger
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Canyon (10 fields), Ada (1 field), Gooding (1 field), and Jerome (1 field). These are the first psyllid captures this year in Gooding and Jerome counties. We collected 42 psyllids this week from sticky cards (33 from Light sites and 9 from Intense sites).
We had traps deployed in 88 of the estimated 107 fields (82%) that will be monitored this year and found psyllids in 17 of the 80 fields for which we have had cards returned thus far (21%; we are still waiting to receive cards from 8 fields).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
UI Parma + OSU Malheur Co FIELD DAY
All Crops All Locations
Posted on: June 17, 2016 by Olga Walsh and Bill Buhrig
2016 Cropping Systems
Field Day
Oregon State University University of Idaho
Location: Parma Research & Extension Center
29603 U of I Lane Parma, ID 83660
Date/time: June 20, 2016 8:30 am noon to 1 pm
8:30 – 8:55 Registration, Modular Building
Travel to D3
9:00 – 9:15 Drip irrigation in potatoes Galen Mooso, J.R. Simplot Company
Travel to C1
9:25 – 9:35 Corn nitrogen fertilizer guidelines Olga Walsh, UI
C1
9:35: 10:05 UAV (drone) demo Craig Thompson, Kristin Swoboda, Take Flight UAS, LLC
Travel to M7
10:10 – 10:25 Spring wheat: nitrogen and water, micronutrients Olga Walsh, UI
Travel to M2
10:35 – 10:50 Winter wheat seed treatments Olga Walsh, UI
M2
10:50 – 11:10 Winter cereals nursery Mike Flowers, OSU
Travel to E1
11:20 – 11:35 Winter wheat nitrogen and phosphorus Olga Walsh, UI
E1
11:35 – 11:55 Spring cereals nursery Jianli Chen, Olga Walsh, UI
E1
11:50 - 12:00 Crop disease update James Woodhall, UI
Travel to Modular Building
12:00 – 1:00 Lunch, indoor presentation, prize draw
Contact information:
IDAHO: Olga Walsh, Cropping Systems Agronomist, Southwest Idaho Research & Extension Center, 29603 U of I Lane, Parma, ID 83660, (208)722-6701, ext. 218.; owalsh@uidaho.edu; Twitter: @IDCrops, Web: ID Crops & Soils
OREGON: William Buhrig, Crop Agent, OSU Malheur County Extension, 710 SW 5th Ave, Ontario, OR 97914, william.buhrig@oregonstate.edu; O: 541-881-1417 x 106
» http://idcrops.blogspot.com/2016/06/cropping-systems-agronomy-field-day-ui.html
New University of Idaho Extension Publication - Planting Dates for Wheat
All Crops All Locations
Posted on: June 17, 2016 by Olga Walsh and Bradford Brown
Appropriate planting dates help to maximize grain yields and quality. Planting date can influence susceptibility to insect pests, diseases, drought, lodging, and inclement harvest conditions. It can affect variety performance and selection, water management, and other aspects of wheat management.
The focus of this publication will be on planting dates for southwestern (SW) Idaho although much of the information will be pertinent to other areas. Planting dates have been a research focus in SW Idaho for three decades, in part because the cropping system is diverse and the planting date window is so long. Research has dealt primarily with the effects of late plantings.
http://www.cals.uidaho.edu/edComm/pdf/BUL/BUL906.pdf
Cereal Field Days in southern Idaho from the University of Idaho
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Posted on: June 16, 2016 by Juliet Marshall
There will be several field days hosted by the University of Idaho in the upcoming weeks. Information on varieties, diseases, insects and cropping systems will be available with several of our Cereals faculty available for discussion. We hope to see you there!
Stripe rust in wheat and barley q
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stripe rust
Posted on: June 16, 2016 by Juliet Marshall
Susceptible varieties of spring wheat are showing high levels of infection from stripe rust if they are not protected by fungicides. High levels are showing in Klasic, for example, from the Aberdeen area through Idaho Falls.
Some formerly resistant varieties are showing low levels of stripe rust as well. There is heavy disease pressure in southeast Idaho. As spring wheat is starting to head, please be aware that strobilurin fungicides should not be used to control stripe rust due to the potential for increased DON levels from Fusarium head blight. Choose a fungicide that will be effective for both stripe rust control and FHB suppression and if possible, target application window for FHB suppression especially for hard white spring wheat.
Read and follow all label directions.
Stripe rust is also being found in winter and spring barley. We are not recommending fungicide applications for stripe rust in barley at this time, but similar to wheat, fungicide applications to suppress FHB will also protect against stripe rust infection. In general, six row barleys are more susceptible than two row barleys.
Pacific Northwest 2016 IPM Workshop
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Posted on: June 11, 2016 by Pam Hutchinson
Pacific Northwest 2016 IPM Workshop
*IPM Train-the-Trainer Working Group*
WHAT: A 2 1/2 day short course designed to train ag professionals, crop consultants, and university extension and research faculty at all experience levels on identification, management and control of insects, diseases, and weeds as well as need-to-know pest management tactics.
This hands-on learning experience will include field sampling and identification of major pests in the area plus creation of a mounted insect collection and weeds preserved in plant presses for your very own, take-home, information transfer/educational display.
WHEN: June 27-29, 2016.
WHERE: University of Idaho Aberdeen Research and Extension Center
1693 S. 200 W.
Aberdeen, ID 83210
DON’T MISS THIS OPPORTUNITY TO ENHANCE YOUR LEVEL OF EXPERTISE IN MULTIPLE DISCIPLINES!
· Enrollment is limited to 20 individuals at each site.
· There is a charge of $125 for the course. All handouts, most materials, equipment and supplies will be furnished.
· Webinars will be available before the class. USA experts will be presenting relevant material online.
INSTRUCTORS: Pamela Hutchinson, U of I Weed Specialist
Stuart Reitz, OSU Extension
Silvia Rondon, OSU Extension Entomologist Specialist
Steve Van Vleet, WSU Extension Specialist
If interested, please contact Pamela Hutchinson
Email: phutch@uidaho.edu
Phone 208-681-1304 or 397-4181
Funding for this course was provided in part by WSARE
More psyllids found in Treasure Valley; none in Magic Valley - June 10, 2016
Potato All Locations
potato psyllid
Posted on: June 11, 2016 by Amy Carroll
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Psyllids were collected this week on sticky traps in potato in the following counties: Payette (3 fields), Owyhee (1 field), Canyon (13 fields), Ada (2 fields), and Elmore (1 field).
We had traps deployed in 82 of the estimated 107 fields (76.6%) that will be monitored this year and found psyllids in 20 of these 82 fields (24.3%).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Squash Bug
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Squash Bugs
Posted on: June 8, 2016 by Rich Guggenheim
Squash Bugs have been spotted in area home gardens on squash plants. To control, hand picking can be effective if done early. There are chemical control options as well. What works best for nymphs are products that contain spinosad. Adults can be controlled with pyrethrins. When using any pesticide, always read and follow all label instructions.
» https://www.youtube.com/watch?v=3aje4g4S_sY
» http://extension.usu.edu/files/publications/factsheet/ENT-120-08.pdf
Iris Yellow Spot Virus detected in Onions
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Iris yellow spot virus / onion thrips
Posted on: June 5, 2016 by Stuart Reitz
Iris yellow spot virus was detected this week in Malheur County and Payette County.
The early appearance of virus points out the need for onion growers to be vigilant in their thrips control programs.
In addition to thrips management, minimize stress on onion plants by making sure fields are maintained at an adequate but not excessive fertility level, and that the soil moisture is kept at about the 20 centibar level. This will help reduce the severity of virus symptoms.
Please contact Stuart Reitz at Malheur County Extension (541-881-1417 / stuart.reitz@oregonstate.edu) if you have questions about your onion fields or would like assistance with virus diagnosis.
First potato psyllid found in Magic Valley potato field this season
Potato All Locations
potato psyllids
Posted on: June 3, 2016 by Erik Wenninger
We collected our first potato psyllid from the Magic Valley this year, on a sticky card deployed in potato. In addition, we collected psyllids from several fields in the Treasure Valley. Psyllids were collected this week on sticky traps in potato in the following counties: Malheur (Oregon), Canyon (4 fields), Ada (2 fields), and Twin Falls.
We know from previous years that psyllids tend to occur earlier and in greater numbers in the Treasure Valley, and patterns observed thus far this year are consistent with this.
We had traps deployed in 68 of the estimated 107 fields (63.6%) that will be monitored this year and found psyllids in 4 of these 68 fields (11.8%).
On another note, of five potato psyllids collected in vacuum samples from bittersweet nightshade on May 17 from Shoshone Falls Park, three were positive for liberibacter (Lso), the bacterium that causes zebra chip.
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites (from which the two psyllids were found) can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Volunteer Potato Management
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Volunteer potatoes
Posted on: June 3, 2016 by Pam Hutchinson
Here’s an update to the recent article by Pamela Hutchinson, Potato Cropping Systems Weed Scientist at the University of Idaho Aberdeen R&E Center in SE Idaho, on methods for controlling volunteer potatoes. As previously mentioned, due to the mild winter experienced in the Pacific Northwest, tubers left after the 2015 harvest can and did survive. At this point in time (first week of June), volunteer plants may be past the tuber initiation, which has been shown to be the best stage for application of many herbicides for effective control, and to prevent re-sprouting and tuber production. However, that is not the case for all fields.
In addition, there are reports of newly emerging sprouts/plants after fields appear to have been sprayed. Fields should be monitored closely after an application in order to determine if further actions are needed!
Thanks,
Pam
First Lso-positive potato psyllids found in Idaho potato fields this season
Potato All Locations
potato psyllids
Posted on: June 2, 2016 by Erik Wenninger
Both of the potato psyllids found last week (one in each of two potato fields in Canyon County) tested positive for liberibacter (Lso; the bacterium that causes zebra chip).
A more detailed update of trapping results from the past week will be posted on Friday.
We continue to urge growers and crop consultants to implement IPM programs for zebra chip. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Idaho Wheat Commission and UI-CALS wireworm survey
Small Grains All Locations
wireworm
Posted on: June 1, 2016 by Jerry Neufeld
Dr. Cathy Wilson (Director of Research Collaboration) from the Idaho Wheat Commission and Dr. Arash Rashad from the UI-CALS Department of Plant, Soil, and Entomological Sciences are conducting a survey about the impact of wireworm in cereals production. Wireworm has been a serious pest in cereals due to limited management options. The only registered chemistry in cereals, i.e. neonicotinoid seed treatment, has provided limited protection and wireworms continue to be a major challenge to Idaho producers. The pest is wide spread and is present across southern and northern Idaho. Previous research conducted in Canada has shown that fipronil causes considerable mortality in wireworms and the IWC and UI-CALS need this survey information to initiate a section 18 application for growers that are greatly suffering from this pest. Results from this survey will also be used to highlight producers/industry concerns about this pest, and will assist in approaching various sources of funding to support research on wireworm management in the PNW and intermountain regions. Please take a few minutes to complete this survey about an important pest in cereals. Start by clicking on the link below.
» http://www.surveygizmo.com/s3/2742917/Economic-impact-of-wireworm
Malheur Experiment Station Weed Research Tour on June 9th
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Posted on: May 31, 2016 by Bill Buhrig
The Malheur stop of the Snake River Weed Research Tour will be in Ontario, OR on June 9th starting @ 8AM at the Experiment Station. Please see the attachment for more information. This is free to the public and pesticide recertification credits are going to be available. There will even be lunch!
Potato Psyllids in Malheur County
Potato All Locations
Potato Psyllid
Posted on: May 29, 2016 by Stuart Reitz
We collected our first potato psyllids of the season from sticky cards in Malheur County potato fields. Two psyllids were found – one in each of two potato fields.
For information and resources on potato psyllids and zebra chip, including management and scouting recommendations, please see the following article: http://www.nwpotatoresearch.com/IPMStuff/PDFs/PotatoPsyllid.pdf.
Additional information on pest management in potatoes in the PNW is available at:
http://www.nwpotatoresearch.com/IPMStuff/PDFs/NorthwestInsectGuidelines.pdf
» http://www.nwpotatoresearch.com/IPMStuff/PDFs/PotatoPsyllid.pdf
» http://www.nwpotatoresearch.com/IPMStuff/PDFs/NorthwestInsectGuidelines.pdf
Iris yellow spot virus in Volunteer Onions
Onion All Locations
Iris yellow spot virus / onion thrips
Posted on: May 28, 2016 by Stuart Reitz
Iris yellow spot virus (IYSV) was detected in volunteer onions in the Ontario, OR area. Characteristic necrotic, diamond-shaped lesions were found on flower scapes. Volunteer onions can serve as a source of virus-infected thrips to move into this season's onion crop.
Although the virus has not yet been found in this season's bulb fields, please continue to monitor fields carefully for thrips. Thrips populations have grown substantially over the past week, and the high temperatures forecast for later next week will further increase thrips development and population growth.
Reducing overall stress on onions will help reduce the severity of damage from thrips and virus
If you see potentially symptomatic plants that you would like tested for virus or have questions about thrips and the virus, please contact Stuart Reitz, Malheur County Extension, 541-881-1417.
First potato psyllids found in Idaho potato fields this season
Potato All Locations
potato psyllids
Posted on: May 27, 2016 by Erik Wenninger
May 27, 2016 – First potato psyllids found in Idaho potato fields this year
We collected our first potato psyllids of the season from sticky cards in Idaho potato fields. Two psyllids were found – one in each of two potato fields in Canyon County. We found our first potato psyllids at a similar time last year.
Sticky cards have now been deployed in 66 of the estimated 97 fields that will be included in the monitoring program this year.
We urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the "Light" sites (from which the two psyllids were found) can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the "Intense" sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
“Heads up” for Volunteer Potato Control in other crops.
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Posted on: May 26, 2016 by Phillip Wharton
With the very mild winter weather conditions this year a lot of volunteer potatoes survived over winter. Growers are now seeing a lot of problems with volunteer potatoes in other crops such as corn, sugar beet, wheat and onions. Volunteer potatoes can be very hard to eliminate if the correct control measures are not taken at the most appropriate time. The potato tuber initiation stage has been shown to be the best time for herbicide application in order to kill the volunteer potato plant, prevent re-sprouting, and prevent tuber production. Attached, Dr. Pamela Hutchinson, Potato Cropping Systems Weed Scientist, has put together a great article on methods for controlling volunteer potatoes in other crops.
Clarification on “New strain of Tomato Late Blight detected in Idaho”
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late blight
Posted on: May 26, 2016 by Phillip Wharton
A point of clarification on the announcement that a “New strain of Tomato Late Blight detected in Idaho”: Late blight has NOT been found in Idaho this year yet in either tomatoes or potatoes. The strain of late blight referred to in the announcement is not new as it has been found in tomatoes and potatoes in 2013, 2014 and 2015, with a widespread outbreak in potatoes throughout SE Idaho last year. The purpose of the leaflet linked to in the previous announcement is to make home owner’s and growers aware of the potential threat of tomato late blight in home owners tomatoes to commercial potato fields. This is because the risk of an outbreak of late blight in potatoes this year is high due to the current cool wet weather and the potential that the late blight pathogen was able to over winter in volunteer potatoes due to the very mild winter conditions. For more information see http://bit.ly/1XSWHsS
New strain of Tomato Late Blight detected in Idaho.
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Late Blight in Tomatoes.
Posted on: May 25, 2016 by Rich Guggenheim
Late blight in tomatoes will likely be seen again this year in Idaho. There is a new highly infectious strain in Idaho this year, US23 which is pathogenic both to tomatoes and potatoes, and some research suggests even petunias.
Application of fungicides in the home garden are preventative only and not curative. Best management practices include avoiding water on leaves of plants and removing infected plants which may spread the disease.
Some varieties are resistant to late blight.
For more information, contact your local County Extension Office!
» http://www.ipm.ucdavis.edu/PMG/r783100211.html
» http://extension.oregonstate.edu/gardening/be-lookout-symptoms-tomato-late-blight
» https://extension.umaine.edu/publications/2427e/
» http://www.plantpath.wisc.edu/wivegdis/pdf/2015/Organic%20late%20blight%20control%202015.pdf
Update of potato psyllid monitoring in Idaho - 20 May 2016
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potato psyllids
Posted on: May 20, 2016 by Erik Wenninger
This week we collected our first sticky cards of the season from potato fields. No potato psyllids were found in potato fields this week. Sticky cards had been deployed in only 27 of the estimated 96 fields that will be included in the program this year, but quite a few more sites were established this past week.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Paul Castrovillo "First 2016 Western Cherry Fruit Flies Captured in ISDA Monitor Trap"
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Western Cherry Fruit Fly
Posted on: May 20, 2016 by Rich Guggenheim
Now is the time to begin treatment for WCFF.
Four specimens of Western Cherry Fruit Fly (Rhagoletis indifferens) were found in an Idaho State Department of Agriculture WCFF survey trap in Canyon County that was checked on May 16. These were the first specimens captured in 2016. Our traps in Gem County, checked the same day, contained no WCFF, however, historically we expect to find them there about a week after the initial catch in Canyon County.
Please check with your local county extension educator or crop consultant for the situation in your area and for proper chemical recommendations and application methods if necessary.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=150
» http://wci.colostate.edu/Assets/pdf/western.cherry.fruit.fly.pdf
» https://extension.usu.edu/files/publications/factsheet/western-cherry-fruit-flies06.pdf
First 2016 Western Cherry Fruit Flies Captured in ISDA Monitor Trap
Cherry All Locations
Western Cherry Fruit Fly
Posted on: May 20, 2016 by Paul Castrovillo
Four specimens of Western Cherry Fruit Fly (Rhagoletis indifferens) were found in an Idaho State Department of Agriculture WCFF survey trap in Canyon County that was checked on May 16. These were the first specimens captured in 2016. Our traps in Gem County, checked the same day, contained no WCFF, however, historically we expect to find them there about a week after the initial catch in Canyon County.
Now is the time to begin treatment for WCFF.
Please check with your local county extension educator or crop consultant for the situation in your area and for proper chemical recommendations and application methods if necessary.
Fire Blight on Apple and Pear Trees
Tree Fruits All Locations
Fire Blight
Posted on: May 18, 2016 by Dian Roberson
We are seeing a lot of fire blight on pears come into the Canyon County Extension Office! Fire blight is a bacterial disease that affects certain species in the rose family (Rosaceae). It is especially destructive to apples (Malus spp.), pears (Pyrus spp.), and crabapples (Malus spp.). It likes warm wet springs like the one we had this year. There is no cure for fire blight. Prevention is the best solution. Purchase resistant varieties, minimize rapid growth and succulent tissue, prune out blighted twigs and cankered branches. Check out the publications and websites below for more information.
» http://pnwhandbooks.org/plantdisease/pear-pyrus-spp-fire-blight
2016 Potato psyllid monitoring program underway in Idaho
Potato All Locations
potato psyllids
Posted on: May 13, 2016 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by IPC, USDA, and generous in-kind contributions by our collaborators.
The first deployment of sticky cards on several of our sites occurred during the past week. More details on the program will be forthcoming, but it will be similar to what we’ve done over the last three years.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Stripe rust in wheat and barley
Small Grains All Locations
stripe rust of wheat
Posted on: May 13, 2016 by Juliet Marshall
Stripe rust continues to spread and is now affecting susceptible spring wheat (UI Pettit) as well as winter wheat. From Oregon to Eastern Idaho, be prepared to apply fungicides to susceptible and moderately susceptible varieties. The fungi infect, take a week or two to develop, and suddenly stripe rust pustules appear seemingly overnight. The application of triazole fungicides are critical in reducing the impact on crops that are already infected, so triazoles and mixed mode of action fungicides are needed to stop the fungi in fields that already have infections. Click on the Cereals Project link to access a Fungicide Efficacy Table and more information about this disease.
Stripe rust in barley has been reported - but at low levels and in one field. This is a different strain, and stripe rust of wheat does not cause stripe rust in barley. Scout fields of wheat and barley, and report occurrence, location and variety to me at jmarshall@uidaho.edu. Thank you to all who have sent me pictures and outbreaks!
May 9th Tree Fruit Pest Advisory
Tree Fruits All Locations
Codling Moth, Aphids, Fire Blight, Thinning
Posted on: May 9, 2016 by Tony McCammon
Codling moth is in early hatch for most of Southwestern Idaho. Southern and Eastern Idaho are not far behind. open the attached pest advisory for more information on Codling moth management.
Wildflower Day is May 12th at the Malheur Experiment Station!
All Crops All Locations
Posted on: May 2, 2016 by Bill Buhrig
Everyone is invited to attend the Native Wildflower Seed Production Field Day at the Malheur Experiment Station on May 12. Registration starts at 8am and lunch will be served. The flier is attached with more details. It is requested that attendees RSVP so we can get a head count for lunch. Call 541-889-2174 to RSVP or ask any questions you may have. It will be a good time!
Aphids
Landscape and Garden All Locations
Aphid
Posted on: April 28, 2016 by Dian Roberson
Aphids are being reported on succulent new spring growth of a variety of landscape plants from Apple trees to Lupine. Remember, a stiff spray of water could be all it takes to reduce or eliminate populations. Check plants closely for Ladybug Larvae and other predators before taking action with chemicals. Nature may already be on the job!
» http://insect.pnwhandbooks.org/hort/nursery/common/nursery-crop-pests-aphids
» http://insect.pnwhandbooks.org/tree-fruit/apple/apple-woolly-apple-aphid
» http://extension.oregonstate.edu/gardening/how-control-aphids-less-toxic-methods
» https://www.facebook.com/journal.environmental.agricultural.sciences/videos/939087619502267/?fref=nf
Beet Leafminer in Spinach, Swiss Chard and Garden Beets
Landscape and Garden All Locations
Posted on: April 27, 2016 by Ariel Agenbroad
Notice small white clusters of eggs on the backsides of your spinach, beet and Swiss Chard plants? Or are the leaves showing damage that looks papery or like winding trails? Then you're probably hosting the tiny fly Beet Leafminer.
You have several options, prevention, cultural management, and both organic and synthetic chemical treatments.
See http://insect.pnwhandbooks.org/vegetable/vegetable-pests/hosts-and-pests/beet-table-leafminer for more information on how to identify the damage and manage this pest.
» http://insect.pnwhandbooks.org/vegetable/vegetable-pests/hosts-and-pests/beet-table-leafminer
Alfalfa and Cabbage Looper
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Alfalfa Looper
Posted on: April 23, 2016 by Rich Guggenheim
Alfalfa Looper is being seen throughout the area. They are similar in appearance to Cabbage looper. The major damage caused by larvae and pupae is contamination of the heads of cole crops and processed foods, and defoliation of peas, alfalfa, beans, mint, and spinach.
» http://horticulture.oregonstate.edu/content/cabbage-looper-alfalfa-looper
» http://www.ipm.ucdavis.edu/PMG/r114300711.html
Dig In Newsletter
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Posted on: April 19, 2016 by Rich Guggenheim
Check out the Spring edition of the Dig In Newsletter:
May ISDA Pesticide Disposal Program
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Posted on: April 19, 2016 by Rich Guggenheim
The Idaho State Department of Agriculture is conducting a pesticide disposal program May 9 at Pickles Butte Landfill. 15500 Missouri Ave, Nampa. May 10 at the ITD Maintenance Yard. 550 Indian Head Rd, Weiser. Collection times are 9 am to 1 PM both days.
FSMA (Food Safety Modernization Act) Outreach Meeting - April 26
All Crops All Locations
Posted on: April 18, 2016 by Stuart Reitz
FSMA outreach/informational meeting
Tuesday, April 26, 6-8 p.m.
Clarion Inn, 1249 Tapadera Avenue, Ontario, Oregon
The Idaho State Dept Agriculture (ISDA) will host an informational meeting for growers on the status of the FSMA (Food Safety Modernization Act) rules.
This session will focus on the Produce Safety Rule, which relates to on-farm activities for raw agricultural commodities, and the Preventative Controls for Human Food Rule, which covers food manufacturing.
Onions and tree fruits are examples of commodities that are subject to the FSMA Produce Safety Rule.
Please plan to attend if you have questions regarding FSMA in relation to your farm or processing facility operation.
RSVP by April 22 to: Candi Fitch, Idaho Fruit and Vegetable Association, Executive Director, at (208) 722-5111, or candif@cableone.net.
ISDA Pesticide Disposal Program 2016
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Posted on: April 18, 2016 by Jerry Neufeld
Idaho State Department of Agriculture is conducting a pesticide disposal program May 9 and 10, at Nampa and Weiser. The pdf below has detailed information.
Exclusion Methods BMP for Elm Seed Bug
Landscape and Garden All Locations
Elm Seed Bug
Posted on: April 15, 2016 by Rich Guggenheim
Elm seed Bug (ESB) is a nuisance pest that may invade residences. The best management practice is to pest proof your home. Elm seed bugs may begin migrating from overwintering sites to their host plants now. Elm Seed bugs emit a foul odor when crushed.
» http://extension.oregonstate.edu/malheur/sites/default/files/spring_2013_esb_fact_sheet.pdf
Stripe Rust confirmed to have overwintered in susceptble winter wheat
Wheat All Locations
stripe rust of wheat
Posted on: April 5, 2016 by Juliet Marshall
I found stripe rust in two fields in south east Idaho on April 4, 2016. The first location was south of Aberdeen in a field of commercial wheat (Brundage).
The second location between American Falls and Pocatello was in a field of volunteer wheat (also Brundage) where stripe rust was found in November, 2015.
A report came in from CPS that a field of Brundage east of Wendell, ID, also has stripe rust (thank you Chris!!!)
From the symptoms, location on the lower leaves, and as one of the locations had confirmed stripe rust prior to the onset of winter, the existing stripe rust has overwintered from fall infections.
I highly recommend that anyone with a field of Brundage examine it closely for stripe rust, looking especially at lower leaves that could have been infected last fall. Snow cover protects wheat as well as the stripe rust from freezing temperatures. Fields that have been under snow will serve as good reservoirs for stripe rust to carry into our spring wheat.
All susceptible varieties should be scouted weekly from now on. Please report infected fields (the approximate location) and send pictures so I can keep alerts updated as the season progresses (jmarshall@uidaho.edu). This helps everyone!
Strobilurin fungicides are excellent preventative fungicides, as are triazoles. Triazoles (or triazole and strobilurin mixes) are more effective if there is a field with established infections. The attached table is (not a complete) list of fungicides put together by a group of pathologists belonging to the NCERA-184, with ratings for degree of control of several wheat diseases.
At this point:
1) Spray fungicides at herbicide timing on susceptible varieties of winter wheat.
2) Select resistant spring varieties, if possible.
3) Be prepared to spray susceptible winter and spring varieties as needed to protect from yield loss - this may be two or more applications of fungicides during the growing season.
4) Scout ALL varieties as there are sometimes changes in the fungal strains, and those varieties that are currently resistant may become susceptible if there are race changes in the fungi.
The use of resistant varieties is the most sustainable and economically viable method of stripe rust control. Breeders work hard to develop resistant varieties in order to help growers save input costs. It is not necessary to spray resistant varieties – in fact, not spraying resistant varieties will contribute to longer-term effectiveness of available fungicides.
The symptoms may not look like the typical long yellow-orange stripes that you see later in the season, but will look more like this:
(see attached picture)
Clarification on seed treatment for late blight
Potato All Locations
Late Blight
Posted on: April 1, 2016 by Jeff Miller
A point of clarification on the announcement for using seed piece treatments to manage late blight: State registrations have not yet been granted in ID, OR or WA for the use of Revus at this time. However, it is expected soon. Do not use Revus until the state registrations are in place. If you are going to use a seed treatment for late blight and the state registration is not in place, please choose another fungicide.
Seed treatment for late blight management in potato
Potato All Locations
Late Blight
Posted on: March 31, 2016 by Jeff Miller
The widespread presence of late blight in 2015 has created the possibility of late blight coming into commercial potato production through infected seed. If growers suspect their seed may have late blight, they should treat with a seed treatment effective against late blight. Mancozeb dust (6%) is an effective treatment. Some liquid seed treatments are also available and research has shown them to be more effective than just using 6% MZ dust alone. Curzate (cymoxanil), Reason (fenamidone), and now Revus (mandipropamid) are labeled for treatment of seed for the control of late blight.
Frost Advisory
All Crops All Locations
Frost
Posted on: March 25, 2016 by Rich Guggenheim
Temperatures are expected to drop into the mid to upper 20s tonight. Protect tender plants.
Freeze can damage fruit buds and young fruit. The level of damage is directly related to cold intensity and duration as well as bud developmental stage. Information on that can be found at
http://extension.usu.edu/files/publications/factsheet/pub__5191779.pdf
and
http://extension.colostate.edu/docs/pubs/garden/07426.pdf
More information on frost protection and season extension can be found below
http://www.ext.colostate.edu/mg/gardennotes/722.html
For more information, contact your local University of Idaho Extension office or visit
http://www.extension.uidaho.edu/
» http://extension.usu.edu/files/publications/factsheet/pub__5191779.pdf
» http://www.ext.colostate.edu/mg/gardennotes/722.html
Time to apply pre-emergent for crabgrass control
Announcements All Locations
Posted on: March 7, 2016 by Dian Roberson
Crabgrass can be difficult to control in lawns after it has germinated. Now is the time to apply a pre-emergent herbicide to control crabgrass and some other broad leaf weeds. A pre-emergent herbicide is one that kills seedlings as they emerge. To be effective they need to be applied before the weed pest appears. Here is some information about identifying crabgrass and how to control it.
» http://pnwhandbooks.org/weed/crabgrass-smooth
» http://www.ext.colostate.edu/ptlk/1541.html
» http://extension.colostate.edu/docs/pubs/garden/03101.pdf
» http://lawncare.about.com/od/organiclawncare/a/corn_gluten.htm
Glyphosate Tolerant Creeping Bentgrass: Meeting with USDA - March 1
All Crops All Locations
Glyphosate tolerant creeping bentgrass
Posted on: February 23, 2016 by Stuart Reitz
On March 1 from 5-7 pm Sid Abel Assistant Deputy Administrator of USDA APHIS’ Biotechnology Regulatory Services will provide an overview of APHIS’ role in the regulation of glyphosate tolerant creeping bentgrass, information on the recent agreement with the The Scotts Company, and the new petition for deregulation.
The overview will be followed by a Q&A session.
If you have concerns regarding glyphosate tolerant bentgrass, please plan to attend.
The meeting will be at the Malheur County Extension, 710 SW 5th Ave., Ontario, OR 97914. 541-881-1417
Mark your calendar for a Virus Detection Training Workshop June 20, Othello, WA
All Crops All Locations
Posted on: February 8, 2016 by Nora Olsen
There will be an important Virus Detection Training Workshop on Monday, June 20th, 2016 at the WSU Research Farm, 1471 West Cox Road in Othello, WA. The workshop will cover field identification of PVY (strains O, N-Wi and NTN), including visual identification of foliar symptoms on 40 major cultivars. We will also have samples of different tuber symptoms from PVY, PMTV and TRV. In addition, we will be discussing and demonstrating new diagnostic assays for viruses and soil-borne vectors of some of the viruses. Additional workshops planned for the week include the WSU Commercial Seed Lot Evaluation (Tuesday June 21st) in Othello, the OSU Potato Field Day at the OSU Research and Extension Center, 2121 S. 1st Street, Hermiston, OR (Wednesday June 22nd) and the WSU Potato Field Day in Othello (Thursday June 23rd). Come and make a week of it!
University and USDA experts at the Virus Detection Training Workshop will include Stewart Gray (USDA-ARS/Cornell), Mark Pavek (WSU), Jonathan Whitworth (USDA-ARS/ID), Amy Charkowski (UWI), Alex Karasev (UID) and Nina Zidack (MtSU). The workshop is part of a USDA NIFA Specialty Crops Initiative award titled “Biological and economic impacts of emerging potato tuber necrotic viruses and the development of comprehensive and sustainable management practices”.
The recent standardization of seed certification programs across the U.S. includes the requirement for documentation of inspector training, but this training will also be beneficial to growers, people who rogue, and industry in general, so please sign up early. To register for the event please visit http://bit.ly/wsu-potatovirusworkshop. For more information about the workshop please email pbg-potatovirus@cornell.edu.
Cereal Schools in February - that's next week!
All Crops All Locations
Posted on: January 26, 2016 by Juliet Marshall
CCA and ISDA Pesticide credits will be available at the University of Idaho's Annual Cereal Schools, Feb 2 - Feb 5th.
Feb 2 in Burley
Feb 3 in Pocatello
Feb 4 in Idaho Falls and Ashton
Feb 6 in Preston
For full details, go to the URL http://www.uidaho.edu/extension/cereals/scseidaho/upcoming-events
to download details of agendas and locations.
Thank you to our lunch sponsors, the Idaho Wheat Commission and the Idaho Barley Commission.
» http://www.uidaho.edu/extension/cereals/scseidaho/upcoming-events
Organic Farming Conference in Caldwell
All Crops All Locations
Posted on: January 20, 2016 by Bill Buhrig
You are all invited to the upcoming Organic Farming Conference in Caldwell!
The “Holy Grail” of Organics – Reduced Tillage Organic Systems
Thursday, January 28, 2016 5 – 9 pm
Friday, January 29, 2016 8:30 am – 5 pm
Register by Monday, January 25.
Registration and conference details at: http://www.pesticide.org/organic_farming_conference_2016. Just click the attached link!
$60 for full conference
$30 for Thursday evening only
$45 for Friday only
Check out all the attached information and we hope to see you there!
» http://www.pesticide.org/organic_farming_conference_2016
2016 Treasure Valley Bean School
All Crops All Locations
Posted on: January 14, 2016 by Jerry Neufeld
The Treasure Valley Bean School is January 28 at the Hampton Inn in Nampa. Click on the pdf below for more information.
Texas Road House, Pest Alert Annual Survey
Announcements All Locations
Posted on: December 11, 2015 by Jerry Neufeld
Thanks to everyone that completed a PNWPestAlert.net annual survey. Your participation is appreciated very much.
The people that were randomly selected to receive the three gift cards to Texas Roadhouse are: Steve Lejardi, Jim Klauzer and Jeff Harper. You should get the gift cards by email within 24 hours.
Treasure Valley Irrigation Conference on December 17th
All Crops All Locations
Posted on: December 3, 2015 by Bill Buhrig
The Treasure Valley Irrigation Conference is rapidly approaching and attendees can save $10 on the registration by RSVP'ing by December 11th. The conference is on December 17th at the Four Rivers Cultural Center in Ontario. Please check out the attachment for more details. The day is packed with great presenters and should be a good time! Hope to see you there!
Idaho Ag Outlook Seminars
All Crops All Locations
Posted on: December 3, 2015 by Jerry Neufeld
The University of Idaho Extension System is sponsoring Idaho Ag Outlook Seminars across Idaho on December 8,9, and 10. Click on the pdf below for more information. The seminar in Caldwell is December 10 at the Best Western.
EPA cancels registration for Transform (Sulfoxaflor)
All Crops All Locations
Posted on: November 30, 2015 by Stuart Reitz
On November 12, 2015, the U.S. Environmental Protection Agency (EPA) issued a
cancellation order for all previously registered pesticide products containing the active ingredient sulfoxaflor.
Products include:
EPA Reg. No. 62719-623, Closer SC;
EPA Reg. No. 62719-625, Transform WG; and
EPA Reg. No. 62719-676, Xxpire WG.
Sale and Distribution Prohibited: Under the EPA cancellation order, sale of these
products is prohibited beginning November 12, 2015. Dealers/distributors with
remaining inventory of these products after this date should contact the
manufacturer/registrant, Dow AgroSciences LLC, for guidance on handling the unsold products. These products may not legally be given away or sold; they may be
distributed only to facilitate return to the manufacturer or for proper disposal or lawful export.
Use of Cancelled Products Purchased Before November 12, 2015: Growers/End
users who already possess any of these cancelled products may continue to use the
product(s) according to directions on the container labels until those supplies are
exhausted. The exception is use under FIFRA Section 24(c) Special Local Need labels (SLNs). According to EPA, because SLNs are tied to the parent product, all SLNs have also been cancelled.
For the Treasure Valley, Section 24(c) cancellations include:
SLN OR 150010 - for Lygus in Alfalfa Seed
SLN ID-150007 - for Lygus in Alfalfa Seed
BYD occurring in early planted winter wheat
Small Grains All Locations
Barley Yellow Dwarf
Posted on: November 20, 2015 by Juliet Marshall
Barley Yellow Dwarf Virus is being found in early-planted fall wheat in areas southern and eastern Idaho. Symptoms include various degrees of yellowing, reddening, and purpling of the leaves.
Alate aphids were found in the fields prior to cold temperatures. See the picture of the aphids provided by Dr. David Hole in Logan Utah.
For more information, see the BYD CIS 1210 at: http://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1210.pdf
or visit the website: http://www.uidaho.edu/extension/cereals/scseidaho
and Click on “Cereal Disease Projects and Information”
and / or “Updates”
2015 Miller Research Potato Pest Management Workshop
Potato All Locations
Posted on: November 18, 2015 by Jeff Miller
Miller Research LLC will be holding its annual potato pest management seminar on December 8, 14, and 15. The same program will be held on all three days. Please RSVP as seating in each session is limited to 45. The meetings will be held at the Miller Research facility located near Rupert, ID (426 E 200 N). Lunch will be provided. There is no cost to attend the meeting. CCA and ISDA credits have been requested.
More information can be found at the accompanying link and in the attached flier.
» http://www.millerresearch.com/alerts/research-news/item/53-mr-potato-pest-management-workshop
2015 Idaho Association of Plant Protection Program
All Crops All Locations
Posted on: October 26, 2015 by Trent Taysom
The Idaho Association of Plant Protection will hold the 2015 annual meeting November 4-5 at the Best Western Sawtooth Inn. Please see the attached program for specifics on the presentations. The cost to attend is $15 (cash or check only). Three CCA (PM) and three ISDA credits are available each day. Lunch will be provided both days.
Please contact Erik Wenninger (erikw@uidaho.edu) or Trent Taysom (trent@millerresearch.com) if you have any questions.
Updates on Pesticide Regulations
All Crops All Locations
Posted on: October 19, 2015 by Stuart Reitz
EPA has released information on new WPS standards and proposed changes to certification standards for pesticide applicators.
*******************************************************************************************************
The EPA recently announced new rules aimed at strengthening the Worker Protection Standard designed to protect farmworkers from toxic pesticides. The revisions have not gone in effect yet! The majority of the rule revisions will be effective approximately 14 months after the rule publishes in the Federal Register. This means the changes will probably be in effect in early 2017. This is to allow farmers and states time to adjust to the new requirements.
A table comparing the existing rules with the new versions can be viewed in the accompanying pdf or at: extension.oregonstate.edu/malheur/worker-protection-standard-revisions
*******************************************************************************************************
EPA is also proposing revisions to Certification standards for Private and Commercial Pesticide Applicators. A summary of the proposed changes can be viewed in the accompanying pdf or at: http://extension.oregonstate.edu/malheur/proposed-changes-pesticide-applicator-certification-rules.
EPA requests input on these proposed changes. You can submit comments to EPA until November 23, 2015. To comment, please see docket number EPA-HQ-OPP-2011-0183 at regulations.gov.
» http://extension.oregonstate.edu/malheur/worker-protection-standard-revisions
» http://extension.oregonstate.edu/malheur/proposed-changes-pesticide-applicator-certification-rules
» http://www.regulations.gov/#!docketDetail;D=EPA-HQ-OPP-2011-0183
Cereals Alert - Aphids are flying, and stripe rust may be lurking - the down side of a beautiful fall
All Crops All Locations
Barley Yellow Dwarf and Stripe rust
Posted on: October 9, 2015 by Juliet Marshall
Yes, I know most of the acres of winter wheat and winter barley are already planted. If the grain is up and wasn’t treated with an insecticidal seed treatment, it will be vulnerable to aphid infestation and Barley Yellow Dwarf Virus infection. The disease Barley Yellow Dwarf (BYD) can cause significant yield loss depending upon the weather.
If planted grain WAS treated with an insecticidal seed treatment, you may still be at risk depending on date of planting. Early planted grain may run out of protection, as seed treatment protection is limited. Please see the attached file for more information!
Be aware! Aphids ARE being found in the newly planted winter wheat! While that may be good news for us in our BYDV insecticide trial and for screening for resistance in new winter wheat varieties, it will not be good news for cereal producers.
And for more information, see the CIS 1210 available online: http://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1210.pdf
Stripe rust infection in fall planted winter wheat was confirmed in Montana by Dr. Mary Burrows (visit http://www.mtagalert.org/ ). That doesn’t mean we have fall infection as well, but it definitely indicates that we have increased risk! The beautiful fall weather allows green bridge material (volunteer grain) to become well established, providing a reservoir for disease (stripe rust especially) and insects (aphids and mites) that transmit BYDV and WSMV.
» http://www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1210.pdf
Prepare to treat your Peach and Nectarine Trees this fall
Tree Fruits All Locations
Various Peach/Nectarine Tree Fungal Diseases
Posted on: October 5, 2015 by Ariel Agenbroad
If you had confirmed cases of Shothole Disease, Peach Leaf Curl or other fungal diseases in your Peaches, Apricots and Nectarines, fall spraying can be an effective part of your protection and prevention strategy.
At about 50% leaf fall, spray an approved Copper Based Fungicide, Bordeaux Mixture or Lime Sulfur at the rate listed on the product.
For more information and specific products to use, visit the links below.
» http://pnwhandbooks.org/plantdisease/peach-prunus-persica-shothole-coryneum-blight
» http://pnwhandbooks.org/plantdisease/peach-prunus-persica-leaf-curl
ZC-positive plants found in potato fields in Minidoka and Twin Falls counties
Potato All Locations
Potato Psyllid
Posted on: October 2, 2015 by Amy Carroll
Tubers sampled from a potato field in Minidoka County and a field in Twin Falls County tested positive for liberibacter (Lso), the bacterium that causes zebra chip (ZC). So far this season we are aware of four fields in Idaho with confirmed ZC. Earlier this season we reported finding Lso-positive tubers from Ada and Power counties.
As the season winds down, we encourage growers and crop consultants to be on the lookout for symptomatic tubers.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Late blight found in Payette County
Potato All Locations
Late blight
Posted on: October 1, 2015 by Nora Olsen
Late blight infected tubers were identified from Payette County. Foliar late blight was not previously reported in this area. The strain was identified as US-23. Continue to submit diseased tubers for sampling in all Idaho regions and counties.
Monitoring of psyllids in Idaho concludes for 2015 growing season
Potato All Locations
Potato Psyllid
Posted on: September 25, 2015 by Amy Carroll
Nearly all of our fields have been vine killed and are no longer being monitored. However, we are maintaining sticky cards around the outside of some of our “Intense” sites in order to characterize any off-season psyllid activity. Only two psyllids were found this week from these traps (both from a field in Gooding County).
Trapping ended on all of our “Light” fields as of last week; however, some cards that arrived late last week were read this week. The relevant link below shows this update.
No new psyllids have tested positive for Lso (liberibacter, the bacterium that causes zebra chip). Some psyllids from last week remain to be tested.
Potato psyllid captures from our bittersweet nightshade sites remain relatively low as well, with 10 psyllids collected from among the four Treasure Valley sites and 11 psyllids collected from among the four Magic Valley sites.
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Update of potato psyllid monitoring in Idaho
Potato All Locations
potato psyllids
Posted on: September 19, 2015 by Erik Wenninger
Abundance of potato psyllids in potato fields in Idaho appears to be lower than last week, with 85 total psyllids captured on sticky cards and vacuum samples thus far (versus 139 captured last week). Several of our “Intense” cards from the Treasure Valley will be processed Monday next week and updated results will be posted at the links below. Captures came from the following counties: Canyon, Ada, Owyhee, Gooding, Twin Falls, Jerome, Minidoka, and Cassia.
Many of our sites, including nearly all of the “Light” sites have been vine killed or harvested and will no longer be sampled.
None of the psyllids that were captured last week was positive for liberibacter (Lso), the bacterium that causes zebra chip, though a few psyllids remain to be tested.
Potato psyllid captures from our bittersweet nightshade sites in the Treasure Valley that arrived late last week were markedly lower than the previous fortnightly sample, with only 4 psyllids found (this is in contrast with the 54 psyllids that we reported on capturing in the Magic Valley sites).
As always, we encourage growers and crop consultants to scout for symptomatic plants and to consider the risk level this year when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Fall Garden Pests Remain Active
All Crops All Locations
Aphids and Beet Leafminer
Posted on: September 17, 2015 by Ariel Agenbroad
The weather is cooling off, but some insect pests are enjoying a resurgence in the garden.
Watch your fall brassica crops like cabbage, kale and broccoli for new generations of aphids, they are flourishing in the cooler temperatures. Spray any insects off with a stream of water or use an insecticidal soap.
Also watch for leafminer damage in your late season spinach, beets and Swiss Chard. Removing and disposing of any affected leaves is the best strategy at this point in the season. For next year, use a protective row cover to keep the flies off their favorite crops!
For more information on both of these pests, visit the links below.
» http://hortsense.cahnrs.wsu.edu/Public/FactsheetWeb.aspx?ProblemId=189
» http://hortsense.cahnrs.wsu.edu/Public/FactsheetWeb.aspx?ProblemId=188
Idaho State Department of Agriculture Pesticide Disposal Program
All Crops All Locations
Posted on: September 17, 2015 by Jerry Neufeld
Idaho State Department of Agriculture just released their fall 2015 pesticide disposal program schedule for Twin Falls, Gooding and Nampa. Click on the pdf below for more information.
ZC-positive plants found in potato field in Power County, Idaho
Potato All Locations
zebra chip
Posted on: September 16, 2015 by Erik Wenninger
Tubers sampled from a field in Power County tested positive for liberibacter (Lso), the bacterium that causes zebra chip.
We have found some potato psyllids in our monitoring fields a few miles away from this site, although no psyllids collected from this area have tested positive for Lso so far this year.
As always, we encourage growers and crop consultants to scout for symptomatic plants and to consider the risk level this year when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato psyllid abundance similar to last week.
Potato All Locations
Potato Psyllid
Posted on: September 11, 2015 by Amy Carroll
Abundance of potato psyllids captured on sticky cards in potato fields in Idaho was similar to last week, with 139 total psyllids captured. Captures came from the following counties: Canyon, Ada, Owyhee, Gooding, Twin Falls, Jerome, and Minidoka counties . In addition, we found 8 nymphs and 4 eggs across three fields in Gooding, Jerome, and Twin Falls counties.
Several more fields have undergone vine kill and are no longer being sampled.
None of the psyllids that were captured last week was positive for liberibacter (Lso), the bacterium that causes zebra chip. A few psyllids remain to be tested. None of the psyllids that remained to be tested at this time last week was positive for Lso.
Some sticky cards have yet to come in this week. As these samples are processed, we will post updated results at the links below.
Psyllid abundance from our fortnightly bittersweet nightshade sampling appears to be up this week. We found a total of 54 potato psyllids (48 from vacuum samples and 6 from sticky cards) across three of our four Magic Valley sites (the Twin Falls Park site is temporarily inaccessible due to construction). Samples from our Treasure Valley sites just arrived and are still in process.
We continue to encourage growers and crop consultants to scout for symptomatic plants and to consider the typical late-season surge in psyllid abundance when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato psyllid abundance increased; a few more Lso-positive psyllids
Potato All Locations
potato psyllids
Posted on: September 4, 2015 by Erik Wenninger
Abundance of potato psyllids captured on sticky cards in potato fields in Idaho was about 50% higher this week than last with 149 total psyllids. Captures came from Canyon, Ada, Owyhee, Elmore, Gooding, Twin Falls, Jerome, Blaine, and Cassia counties. Several fields have undergone vine kill and are no longer being sampled.
Four of the psyllids that were captured last week were positive for liberibacter (Lso), the bacterium that causes zebra chip. These were from Canyon (one psyllid from each of three different fields) and Owyhee counties.
With the summer winding down and much of our crew having dispersed back to school, we are running a bit behind on leaf and vacuum samples (last week’s results are posted below; only one psyllid was found in a vacuum sample). We expect to complete these next week at which time we will post at the links below.
From our bittersweet nightshade sampling last week, we found a total of 22 psyllids among Treasure Valley and Magic Valley sites; this is about 50% lower than our previous fortnightly sample.
We continue to encourage growers and crop consultants to scout for symptomatic plants and to consider the late-season increase in psyllid abundance when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Creating Habitat for Pollinators and Beneficial Insects Farm Tour
Announcements All Locations
Posted on: September 1, 2015 by Jennifer Miller
Contact:
Jennifer Miller, 208-850-6504, Northwest Center for Alternatives to Pesticides
Creating Habitat for Pollinators and Beneficial Insects Farm Tour
Farmers interested in increasing pollinator and beneficial insect habitat on their farms are invited to attend a farm tour at Purple Sage Farms in Middleton, Idaho on Wednesday, September 16.
Purple Sage Farms, the Northwest Center for Alternatives to Pesticides (NCAP) and The Xerces Society will host the tour from 2 to 5 pm.
Tim and Mike Sommer of Purple Sage Farms grow certified organic herbs, greens and specialty produce in their greenhouses, low tunnels and in-field production. The Sommers also raise grass-fed sheep and cattle, an important part of the nutrient cycling on the farm and from which they make their own compost.
Jessa Kay Cruz, senior pollinator conservation specialist with the Xerces Society, will discuss her work with farmers establishing habitat for pollinators and beneficial insects. She will give an overview of pollinators and beneficial insects, their habitat requirements, steps to assessing existing habitat, and organic methods of site preparation for establishing habitat.
The Sommers are working with NCAP and The Xerces Society to incorporate additional pollinator and beneficial insect habitat on their 50-acre farm. They are currently conducting different methods of organic site prep, prior to planting starts into hedgerows this fall. The farm also supports pollinators and beneficial insects through annual plantings, cover crops and allowing production areas to reach flowering.
The tour will conclude with refreshments and a presentation on a new crop insurance program, Whole-Farm Revenue Protection, which provides an opportunity for specialty crop and organic producers to secure risk coverage.
The cost is $20 and pre-registration is required. Register online at www.pesticide.org or contact Jen Miller (jmiller@pesticide.org or 208-850-6504) by September 10.
This tour is made possible by support from USDA Natural Resources Conservation Service Conservation Innovation Grant and USDA Risk Management Agency Education partnership funding. This is an equal opportunity event.
The Northwest Center for Alternatives to Pesticides (NCAP) works to protect community and environmental health and inspire the use of ecologically sound solutions to reduce the use of pesticides.
Potato psyllid abundance similar to last week
Potato All Locations
potato psyllids
Posted on: August 29, 2015 by Erik Wenninger
Total abundance of potato psyllids captured in potato fields in Idaho was similar to last week, with the highest overall numerical count we’ve recorded this year from sticky traps: 102 total potato psyllids. Captures came from Canyon, Ada, Owyhee, Elmore, Gooding, Twin Falls, Jerome, Cassia, and Power counties.
Two of the psyllids that were captured last week were positive for liberibacter (Lso), the bacterium that causes zebra chip. These were from Gooding and Minidoka counties.
With the summer winding down and much of our crew having dispersed back to school, we are running a bit behind on leaf and vacuum samples and on samples from bittersweet nightshade. We hope to have these completed early next week. Leaf and vacuum sample results will be posted at the links below when completed.
We regret to report that there was a problem with some of the liberibacter samples that we sent to campus to be tested a few weeks ago. These were rerun, and it turns out that incidence was lower than previously reported. Corrected liberibacter incidence can be found on the spreadsheets linked below. In spite of this, risk of ZC appears to be higher this year than during the previous two, given the higher abundance of potato psyllids and the presence of liberibacter in psyllids earlier in the season. Therefore, we continue to encourage growers and crop consultants to scout for symptomatic plants and to consider this risk level when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Liberibacter-positive tuber found in Idaho potato field
Potato All Locations
zebra chip
Posted on: August 25, 2015 by Erik Wenninger
One of the tubers that was sampled recently from a field in Ada County tested positive for liberibacter (Lso), the bacterium that causes zebra chip (ZC). The sample was taken from one of our “Intense” sites that has seen a relatively large number of liberibacter-positive psyllids. Both foliar and tuber symptoms have been difficult to find in this and other fields that we’ve inspected, so at least in these fields, overall ZC incidence appears to be low.
Nevertheless, risk of ZC appears to be higher this year than during the last two, especially in the Treasure Valley, so we continue to encourage growers and crop consultants to scout for symptomatic plants and to consider this risk level when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato psyllid abundance increased again this week; a few more Lso-positive psyllids
Potato All Locations
potato psyllids
Posted on: August 21, 2015 by Erik Wenninger
Total abundance of potato psyllids captured in potato fields in Idaho increased about 50% relative to last week; most of this increased abundance occurred in the Treasure Valley. We captured 97 psyllids on sticky cards in fields across the Treasure and Magic Valleys, including fields in Canyon, Ada, Owyhee, Elmore, Gooding, Twin Falls, Jerome, and Minidoka counties. We also found a psyllid on a card submitted to our lab from Power County. In addition, we found a total of seven potato psyllid nymphs from leaf samples collected two different fields in Gooding and Jerome counties.
Two of the psyllids collected last week from potato fields tested positive for liberibacter (Lso), the bacterium that causes zebra chip. Also, two psyllids that we collected in vacuum samples from bittersweet nightshade in Shoshone Falls Park in Twin Falls tested positive for liberibacter.
Risk of zebra chip appears to be higher this year than the last two, especially in the Treasure Valley, so we continue to encourage growers and crop consultants to scout for symptomatic plants and to consider this risk level when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Handouts from the Late Blight Management Meetings
Potato All Locations
Late blight
Posted on: August 20, 2015 by Jeff Miller
Meetings were held in American Falls and Idaho Falls on August 18 focused on providing information on late blight management in potato. PowerPoint handouts from those meetings are attached here. The first reviews management in the field up until harvest. The second discusses storage management. The third discusses vine kill as it relates to late blight management.
» Managing Late Blight Late Season
2015 Idaho Association of Plant Protection Annual Meeting
All Crops All Locations
Posted on: August 20, 2015 by Jeff Miller
This is a call for presentations for the 2015 annual meeting of the Idaho Association of Plant Protection in Jerome, ID at the Best Western Sawtooth Inn and Suites. The meeting will be held Wednesday, November 4 from 1:00 pm to 5:00 pm (registration starts at 12:30) and Thursday, November 5 from 8:00 am to 12:00 pm. Please consider contributing research results, observations, unusual disease occurrences, topics which could be discussed as a group, etc. to the meeting. Each presentation will be allotted a 20 minute time slot. Please let us know if you feel you would need more or less time. A final program will be advertised in early October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations at the Best Western Sawtooth Inn can be made by calling 208-324-9200. Indicate you will be attending the IAPP meetings. Regular rooms are available at the corporate rate of $69.99 + tax, but reservations must be made prior to October 12.
Please reply by email or complete and return the bottom half of the attached sheet. If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information. Responses can be sent to either Erik Wenninger at erikw@uidaho.edu or Trent Taysom at trent@millerresearch.com.
Clarification on late blight meeting
Potato All Locations
Late blight
Posted on: August 14, 2015 by Jeff Miller
The previous alert did not specify the locations for the late blight management meetings:
American Falls at the American Falls High School Auditorium - Tuesday, August 18 from 10:00 am -12:00 pm
Idaho Falls at the University of Idaho (Tingey Administration Building auditorium) – Tuesday, August 18 from 1:30 pm – 3:30 pm
Managing Late Blight Going into Storage
Potato All Locations
Late blight
Posted on: August 14, 2015 by Jeff Miller
Please note that the American Falls meeting outlined below replaces the meeting planned for Aberdeen!
The University of Idaho and Miller Research are sponsoring a meeting on managing late blight going into storage. The meeting agendas are as follows:
American Falls - Tuesday, August 18 from 10:00 am -12:00 pm.
Idaho Falls – Tuesday, August 18 from 1:30 pm – 3:30 pm
Dr. Jeff Miller will speak first and discuss proper disease identification, pathogen life cycle and biology, disease management considerations in the field, and appropriate use of fungicides late season through vine kill.
Dr. Nora OIsen will discuss post –harvest fungicide use and selection and proper storage management considerations.
Two ISDA recertification credits are available.
potato psyllid update
Potato All Locations
potato psyllids
Posted on: August 14, 2015 by Erik Wenninger
Abundance of potato psyllids captured in potato fields in Idaho is up slightly from last week. We captured 63 psyllids on sticky cards in fields across the Treasure and Magic Valleys, including fields in Payette, Canyon, Ada, Owyhee, Elmore, Gooding, Twin Falls, Jerome, and Cassia counties. In addition, we found one potato psyllid nymph on a leaf sample from a field in Gooding County.
All of the psyllids collected last week (cards deployed during the week of July 26 and collected during the week of August 2) tested negative for liberibacter (Lso), the bacterium that causes zebra chip.
We captured 43 psyllids from our fortnightly bittersweet nightshade sampling around the Treasure and Magic Valleys. This also is up slightly from the previous samples.
We collected tubers this week and last from several fields that have had the highest incidence of liberibacter-positive psyllids. Foliar symptoms were mostly lacking and, although most tubers examined were clean, a few were found with apparent zebra chip (ZC) symptoms. These samples are being tested for liberibacter, which is the only way to determine with certainty whether or not the plants actually have ZC.
Although all psyllids collected last week were negative for liberibacter and tuber samples that we have examined have been mostly clean, the level of liberibacter found in psyllid samples from Canyon and Ada counties during recent weeks suggests that risk of ZC may be higher in this area. Therefore, we encourage growers and crop consultants to scout for symptomatic plants and to consider this risk level when making insecticide decisions through the remainder of the season.
Photos of typical ZC symptoms exhibited by foliage and tubers may be found here:
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Consult our website for more information, including management recommendations and online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as liberibacter testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
new layout for PNWPestAlert.net
Announcements All Locations
Posted on: August 14, 2015 by Jerry Neufeld
We are excited to announce a new look and added functionality for the PNWPestAlert.net website. We have been busy this summer, working with our programmer to change the look of the website, as well as adding some additional functions. In a few days we will change over to the new webiste and begin using it. We are also adding content area for “Landscapes and Gardens”. This area of the website will be administered by Ariel Agenbroad, Area Extension Educator for Food Systems & Small Farms with University of Idaho Extension. On the new homepage, you will now see three categories for Alerts: Current Alerts will show all Alerts posted to the website; Crop Alerts will show only Alerts related to agricultural crops; and Landscape and Garden Alerts will show only Alerts related to urban landscapes and garden environments. Current subscribers do not need to do anything different to continue to receive your chosen alerts. However, if you would like to make changes to your user profile or sign up to receive “Landscape and Garden” alerts, you can do that by clicking on “Edit User Profile” (lower left hand side on the new home page) and then make any desired changes to your profile.
We hope you enjoy the new look and functionality of the website and bear with us while we get the bugs out of the new system (no pun intended). If you encounter any issues with the new site, please contact us at jerryn@uidaho.edu or ariel@uidaho.edu and we will address your concerns as soon as possible.
Jerry Neufeld
Ariel Agenbroad
Late blight management meeting
Potato All Locations
Late blight
Posted on: August 14, 2015 by Jeff Miller
A meeting on managing late blight going into storage will be held at the Aberdeen High School on Tuesday, August 18 at 10:00 AM. Speakers will be Dr. Nora Olsen (University of Idaho) and Dr. Jeff Miller (Miller Research). Call Jeff at 208-431-4420 for more information.
More late blight samples
Potato All Locations
Late blight
Posted on: August 14, 2015 by Jeff Miller
Late blight had been confirmed in additional counties. Positive samples were confirmed in Madison, Fremont, and Jefferson counties yesterday and this morning. Two samples have also been confirmed in Cassia County - one on the east side an another on the west.
Late blight in Cassia, Madison, Fremont, and Jefferson Count
Potato All Locations
Late blight
Posted on: August 13, 2015 by Jeff Miller
Late blight had been confirmed in additional counties. Positive samples were confirmed in Madison, Fremont, and Jefferson counties yesterday and this morning. Two samples have also been confirmed in Cassia County - one on the east side an another on the west.
Late blight update
Potato All Locations
Late blight
Posted on: August 8, 2015 by Jeff Miller
Late blight is spreading in several locations in southern Idaho. Please see the attached "Late blight update" for a summary of the epidemic and an overview of control measure. We have also attached a review of fungicides available for late blight control along with a checklist for managing late blight going into storage.
Links to web pages from the University of Idaho and Miller Research with additional information are listed below.
» http://www.millerresearch.com/alerts/pest-alerts/item/49-late-blight-management-2015
» http://www.idahopotatodiseases.org/lateblight.html
Potato psyllid abundance similar to recent weeks; more Lso-p
Potato All Locations
potato psyllids
Posted on: August 7, 2015 by Erik Wenninger
Abundance of potato psyllids in potato fields in Idaho this week was similar to the past two weeks, if not slightly lower. We captured 37 psyllids on sticky cards in fields across the Treasure and Magic Valleys, including fields in Payette, Canyon, Ada, Owyhee, Elmore, Gooding, Twin Falls, Jerome, and Cassia. In addition, we found a potato psyllid on a card from a field in Power County that was collected last week and submitted to our lab this week.
From week 10 of sampling (cards deployed the week of July 12th and collected the week of the 19th), we collected 14 psyllids that tested positive for liberibacter (Lso), the bacterium that causes zebra chip. All were from fields in Canyon or Ada counties.
From week 11 we had several psyllids, mostly in the Treasure Valley, that tested positive for liberibacter (Lso), the bacterium that causes zebra chip. Positive psyllids were found in Payette County, Canyon County (four different fields), Ada County (15 positive psyllids in one field), Owyhee County, and Twin Falls County. In addition, we found positive psyllids at our bittersweet nightshade site in Murtaugh and at Dierkes Lake in Twin Falls (one from each site).
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
More positive psyllids in Ada County; first Payette and Powe
Potato All Locations
Potato Psyllid
Posted on: July 31, 2015 by Erik Wenninger
Abundance of potato psyllids in potato fields in Idaho this week slightly increased, with 57 psyllids captured (compared to 43 last week) across the Treasure Valley, Magic Valley, and Upper Snake. Psyllids were captured this week from several fields in Ada and Canyon counties, as well as from sites in Owyhee, Payette, Twin Falls, Jerome, Cassia and Power counties. This represents the first psyllid captured in Payette as well as in Power County.
Last week we were waiting for results from psyllids captured on cards deployed in potato fields July 6th to 13th. Five psyllids from two different fields in Ada County tested positive for liberibacter (Lso), the bacterium that causes zebra chip. We continue to run a little behind receiving results, but they will be posted on the website below as soon as they come in. Please continue checking throughout the week. We are still waiting on results from psyllids captured last week.
We captured 27 psyllids at our bittersweet nightshade sites around the Treasure and Magic Valleys.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Late blight
Potato All Locations
Posted on: July 28, 2015 by Jeff Miller
The late blight in Minidoka County has been determined to be the US-23 strain. This strain is sensitive to mefenoxam. As a result, growers can use Ridomil Gold pre-packs (e.g. Ridomil Gold Bravo, Ridomil Gold MZ) to manage late blight. Fields which have been treated with mefenoxam appear to be free of late blight even though they are close to fields with confirmed late blight.
Additional fields in Minidoka County have been confirmed, with the latest finds close to Rupert.
More information on fungicides for managing late blight can be found at the link below.
Zero positive potato psyllids from last week
Potato All Locations
Potato Psyllid
Posted on: July 24, 2015 by Amy Carroll
Overall abundance of potato psyllids in potato fields in Idaho this week continued to decline, with 43 psyllids captured (compared to 71 last week) across the Treasure and Magic Valleys. Psyllids were captured this week from several fields in Ada and Canyon counties, as well as from a few different sites in Elmore and Twin Falls counties. We are still waiting on a shipment of sticky cards from our “Light” sites (approximately 20 fields) in Cassia and Minidoka counties.
Zero psyllids from last week tested positive for liberibacter (Lso), the bacterium that causes zebra chip—one each from Canyon, Ada, and Minidoka counties.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
More late blight in Minidoka County
Potato All Locations
Late blight
Posted on: July 22, 2015 by Jeff Miller
Late blight had been confirmed in two additional fields in Minidoka County. It is likely in several others. Pathogen spread is likely with current weather conditions. Growers are encouraged to report additional finds so that the extent of infection and rate of spread can be documented.
Potato Pest Management Field Day
Potato All Locations
Posted on: July 21, 2015 by Jeff Miller
Miller Research will be holding a pest management field day on Thursday, August 13 at the Miller Research facility located near Acequia, ID (426 E 200 N). A short presentation will be given in the office followed by a tour of the research plots.
The presentations will focus on and chemical management of diseases and will highlight research which has been funded by the Pacific Northwest Potato Research Consortium. We have requested 3 ISDA pesticide recertification credits and 3 CCA (Pest Management) credits for this meeting.
Lunch will be provided. Please RSVP to Jeff Miller by August 10 at 208-531-5124 or by email at: jeff@millerresearch.com so that we can get an accurate count for room preparation purposes.
See the attachment for additional details.
Late blight in Minidoka County
Potato All Locations
Late blight
Posted on: July 21, 2015 by Jeff Miller
Late blight has been positively identified in Minidoka County. It appears the infections resulted from a spore shower and it is likely that other fields are also affected. It is critical for growers to scout fields. Affected fields should be sprayed on a 7-day schedule. If thundershowers persist, a 7-day schedule is advised for all in the area. Management guidelines are available at the link below.
» http://www.millerresearch.com/alerts/pest-alerts/item/49-late-blight-management-2015
Potato psyllid numbers dip; more positive psyllids from last
Potato All Locations
potato psyllids
Posted on: July 17, 2015 by Erik Wenninger
Overall abundance of potato psyllids in potato fields in Idaho this week generally were considerably lower than the previous week, which may have been due to the cooler temperatures. Psyllids were captured this week in Canyon, Owyhee, and Elmore counties, as well as from several different sites in both Jerome and Twin Falls counties. We are still waiting on a shipment of sticky cards from our “Intense” sites in Canyon and Ada counties.
Three psyllids from last week tested positive for liberibacter (Lso), the bacterium that causes zebra chip—one each from Canyon, Ada, and Minidoka counties.
Psyllid captures also were lower at our bittersweet nightshade sites around the Treasure and Magic valleys.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Late blight in Bingham County
Potato All Locations
Late Blight
Posted on: July 10, 2015 by Jeff Miller
Late blight has been positively diagnosed in south central Bingham County. The weather has been very favorable for disease development the past few days and it is likely that the pathogen will spread. Protectant fungicides should be applied now if they are not already in place. A discussion of fungicides for the management of late blight and other information on late blight can be found at the link below.
It is critical to scout fields in all areas of the state, particularly in areas where leaves remain wet longer (i.e. at the pivot point, along mainlines, irrigation overlaps) or in areas where fungicide deposition may be compromised. Please bring in suspect samples to University of Idaho or Miller Research. It is critical for us to understand the distribution and strain of the pathogen.
» http://www.millerresearch.com/alerts/pest-alerts/item/49-late-blight-management-2015
Potato psyllid numbers rising, another positive psyllid, and
Potato All Locations
Potato Psyllid
Posted on: July 10, 2015 by Amy Carroll
Overall abundance of psyllids in potato fields in Idaho has increased in both the Treasure Valley and Magic Valley. Last week we reported 28 adult potato psyllids captured in potato fields. This week the numbers have jumped considerably to 111 total adults captured. Psyllids were collected this week from the following counties: Canyon, Ada, Owyhee, Elmore, Jerome, Twin Falls, Minidoka, Cassia, and Bingham. This represents the first psyllid capture this year from Elmore and Bingham Counties. In addition, we collected eight psyllids at the Kimberly Research & Extension Center.
One of the psyllids we collected last week from a field in Twin Falls County tested positive for Lso, the bacterium that causes zebra chip. We are still waiting on some results from pyllids captured last week. We also collected our first potato psyllid eggs (two total) this year from an “intense” (10 sticky cards) monitoring field in Twin Falls County. This particular field yielded 17 total adult psyllids from sticky cards.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
First potato psyllid nymphs found in a potato field in Idaho
Potato All Locations
potato psyllids
Posted on: July 2, 2015 by Erik Wenninger
Overall abundance of potato psyllids in potato fields was similar this week (28 adults total) compared to last (26 adults total), though numbers were higher this week relative to last in the Treasure Valley. Psyllids were collected this week from the following counties: Canyon, Ada, Owyhee, Gooding, Jerome, Twin Falls, Minidoka, Cassia, and Blaine. We collected one psyllid at the Kimberly Research & Extension Center.
We also collected our first potato psyllid nymphs (three total) this year from a field in Cassia County.
In addition, we collected many potato psyllids from bittersweet nightshade sites in the Magic Valley, including 37 from vacuum samples at Shoshone Falls Park.
None of the potato psyllids that we collected last week tested positive for Lso, the bacterium that causes zebra chip (though three psyllids that arrived at our lab late last week have yet to be tested).
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
First potato psyllid nymphs found in a potato field in Idaho
Potato All Locations
potato psyllids
Posted on: July 2, 2015 by Erik Wenninger
Overall abundance of potato psyllids in potato fields was similar this week (28 adults total) compared to last (26 adults total), though numbers were higher this week relative to last in the Treasure Valley. Psyllids were collected this week from the following counties: Canyon, Ada, Owyhee, Gooding, Jerome, Twin Falls, Minidoka, Cassia, and Blaine. We collected one psyllid at the Kimberly Research & Extension Center.
We also collected our first potato psyllid nymphs (three total) this year from a field in Cassia County.
In addition, we collected many potato psyllids from bittersweet nightshade sites in the Magic Valley, including 37 from vacuum samples at Shoshone Falls Park.
None of the potato psyllids that we collected last week tested positive for Lso, the bacterium that causes zebra chip (though three psyllids that arrived at our lab late last week have yet to be tested).
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
BYD SYmposium - July 1 in Burley
Small Grains All Locations
Barley Yellow Dwarf Virus
Posted on: June 26, 2015 by Juliet Marshall
Come join us next WEDNESDAY!!! July 1 at the Best Western Burley Inn. Learn about BYDV, the disease, insect vector and control methods. Provide input on future research needs! AND get a free lunch for your time - just RSVP to Mike Erickson at mike.erickson@mcgregor.com or at (208)305-7458.
SPONSORS: McGregor, University of Idaho, Idaho Wheat Commission, Idaho Barley Commission
July 1 WEDNESDAY
Burley Inn
8:30 AM Registration
9:00 AM Start
Lunch provided - please RSVP by calling Mike Erickson at
(208)305-7458 or mike.erickson@mcgregor.com
BYD SYmposium - July 1 in Burley
Small Grains All Locations
Barley Yellow Dwarf Virus
Posted on: June 26, 2015 by Juliet Marshall
Come join us next WEDNESDAY!!! July 1 at the Best Western Burley Inn. Learn about BYDV, the disease, insect vector and control methods. Provide input on future research needs! AND get a free lunch for your time - just RSVP to Mike Erickson at mike.erickson@mcgregor.com or at (208)305-7458.
SPONSORS: McGregor, University of Idaho, Idaho Wheat Commission, Idaho Barley Commission
July 1 WEDNESDAY
Burley Inn
8:30 AM Registration
9:00 AM Start
Lunch provided - please RSVP by calling Mike Erickson at
(208)305-7458 or mike.erickson@mcgregor.com
Potato psyllid numbers increasing in Magic Valley potato fie
Potato All Locations
Potato Psyllid
Posted on: June 26, 2015 by Amy Carroll
June 26, 2015 – Potato psyllid numbers increasing in Magic Valley potato fields
Abundance of potato psyllids appears to be increasing in the Magic Valley. We collected eight psyllids from one site in Jerome County. This week, we also collected potato psyllids from three different Canyon County fields (one psyllid per site), six different fields in Twin Falls County (one psyllid per site), one psyllid from another site in Jerome County, and seven psyllids from five sites (two on one field) in Cassia County. This represents our first psyllid captures this season in Cassia County. In addition, we collected our first psyllid since April at the Kimberly Research & Extension Center.
Aside from the one positive psyllid we reported on last week, none of the other potato psyllids that we collected last week tested positive for Lso, the bacterium that causes zebra chip.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Potato psyllid numbers increasing in Magic Valley potato fie
Potato All Locations
Potato Psyllid
Posted on: June 26, 2015 by Amy Carroll
June 26, 2015 – Potato psyllid numbers increasing in Magic Valley potato fields
Abundance of potato psyllids appears to be increasing in the Magic Valley. We collected eight psyllids from one site in Jerome County. This week, we also collected potato psyllids from three different Canyon County fields (one psyllid per site), six different fields in Twin Falls County (one psyllid per site), one psyllid from another site in Jerome County, and seven psyllids from five sites (two on one field) in Cassia County. This represents our first psyllid captures this season in Cassia County. In addition, we collected our first psyllid since April at the Kimberly Research & Extension Center.
Aside from the one positive psyllid we reported on last week, none of the other potato psyllids that we collected last week tested positive for Lso, the bacterium that causes zebra chip.
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Potato Pest Alert for the week ending 6-26-2015
Potato All Locations
Posted on: June 26, 2015 by Phill Wharton
Dr. Mike Thornton reports that there are not a lot of disease issues coming through the door right now. In the Treasure Valley area, we are seeing a little bit of early blight on lower leaves, especially on plants that are stressed due to virus infection or other issues. Speaking of stress, the hot days and warm nights forecast for the next week or so can be very hard on potato plants. To reduce the incidence of physiological disorders like sugar ends, it is important to adjust irrigation schedules to account for the increase in water demand by the crop. Growers cannot afford to get behind on irrigation under these conditions, as even a single stress event at this critical time of tuber development can cause high levels of malformed tubers and reduce processing quality.
In the Magic Valley area Dr. Nora Olsen reports that the only significant disease issues they are seeing are related to PVY infection of potatoes. The high temperatures in the area also appear to be putting some crops under stress as many which were almost at row closure last week still have not closed rows yet this week.
In east and north eastern part of the state Pocatello up through Tetonia), there have been no disease problems reported apart from some PVY issues. Many crops are at flowering now and should be at row closure in the next week or so. As with other parts of the state hot days and warm nights are forecast for the next couple of days so it is imperative to adjust irrigation schedules to account for the increase in water demand by the crop. Increased stress on the plants can make them more susceptible to disease and insect problems.
For up to date information on potato diseases in Idaho and across the country follow us on twitter. http://www.twitter.com/potatodiseases
Potato Pest Alert for the week ending 6-26-2015
Potato All Locations
Posted on: June 26, 2015 by Phill Wharton
Dr. Mike Thornton reports that there are not a lot of disease issues coming through the door right now. In the Treasure Valley area, we are seeing a little bit of early blight on lower leaves, especially on plants that are stressed due to virus infection or other issues. Speaking of stress, the hot days and warm nights forecast for the next week or so can be very hard on potato plants. To reduce the incidence of physiological disorders like sugar ends, it is important to adjust irrigation schedules to account for the increase in water demand by the crop. Growers cannot afford to get behind on irrigation under these conditions, as even a single stress event at this critical time of tuber development can cause high levels of malformed tubers and reduce processing quality.
In the Magic Valley area Dr. Nora Olsen reports that the only significant disease issues they are seeing are related to PVY infection of potatoes. The high temperatures in the area also appear to be putting some crops under stress as many which were almost at row closure last week still have not closed rows yet this week.
In east and north eastern part of the state Pocatello up through Tetonia), there have been no disease problems reported apart from some PVY issues. Many crops are at flowering now and should be at row closure in the next week or so. As with other parts of the state hot days and warm nights are forecast for the next couple of days so it is imperative to adjust irrigation schedules to account for the increase in water demand by the crop. Increased stress on the plants can make them more susceptible to disease and insect problems.
For up to date information on potato diseases in Idaho and across the country follow us on twitter. http://www.twitter.com/potatodiseases
Potato Pest Alert for the week ending 6-19-2015
Potato All Locations
Posted on: June 19, 2015 by Phill Wharton
The weather has finally turned and the sun has come out. In most growing areas this week temperatures have been in the 80’s or higher. With the dry warm weather across the snake river valley the risk of a late blight outbreak is low. However, micro-climates may exist in fields where conditions are conducive for late blight. Areas such as low spots where soil moisture is highest and parts of the field shaded by windbreaks are examples of areas where scouting should be intensified. For information on what fungicides to use for managing late blight see the article recently published by Dr. Jeff Miller of Miller Research and Dr. Phill Wharton from UI (http://bit.ly/1Q4tmty).
In the Treasure Valley area and western Idaho most potato crops are now past row closure and the first reports of early blight are starting to come in. For information on early blight control see (http://bit.ly/1CinqBN). Whatever product you use to control early blight it is always recommended that you tank mix it with a protectant fungicide such as Chlorothalonil or Dithane, unless the product already contains it (e.g. Gavel or Zing!). This reduces the chances of fungicide resistance development.
In the Magic Valley area most crops are just at row closure and it is around this time that growers should be making their first application for early blight/ white mold control. Dr. Jeff Miller reports that in fields that didn't receive an insecticide treatment at planting, Colorado beetles are beginning to appear.
In east and north eastern part of the state (Pocatello up through Tetonia) crops are between the 6-8” stage and touching in the rows. There have not been any reports of disease problems this week. If you are growing a variety which is susceptible to black dot, or have had problems with black dot in the past, the 6-8” plant stage is the optimal timing to apply a black dot control product such as a strobilurin (Quadris Top, Gem, Reason, Headline etc).
For up to date information on potato diseases in Idaho and across the country follow us on
twitter. http://www.twitter.com/potatodiseases
Potato Pest Alert for the week ending 6-19-2015
Potato All Locations
Posted on: June 19, 2015 by Phill Wharton
The weather has finally turned and the sun has come out. In most growing areas this week temperatures have been in the 80’s or higher. With the dry warm weather across the snake river valley the risk of a late blight outbreak is low. However, micro-climates may exist in fields where conditions are conducive for late blight. Areas such as low spots where soil moisture is highest and parts of the field shaded by windbreaks are examples of areas where scouting should be intensified. For information on what fungicides to use for managing late blight see the article recently published by Dr. Jeff Miller of Miller Research and Dr. Phill Wharton from UI (http://bit.ly/1Q4tmty).
In the Treasure Valley area and western Idaho most potato crops are now past row closure and the first reports of early blight are starting to come in. For information on early blight control see (http://bit.ly/1CinqBN). Whatever product you use to control early blight it is always recommended that you tank mix it with a protectant fungicide such as Chlorothalonil or Dithane, unless the product already contains it (e.g. Gavel or Zing!). This reduces the chances of fungicide resistance development.
In the Magic Valley area most crops are just at row closure and it is around this time that growers should be making their first application for early blight/ white mold control. Dr. Jeff Miller reports that in fields that didn't receive an insecticide treatment at planting, Colorado beetles are beginning to appear.
In east and north eastern part of the state (Pocatello up through Tetonia) crops are between the 6-8” stage and touching in the rows. There have not been any reports of disease problems this week. If you are growing a variety which is susceptible to black dot, or have had problems with black dot in the past, the 6-8” plant stage is the optimal timing to apply a black dot control product such as a strobilurin (Quadris Top, Gem, Reason, Headline etc).
For up to date information on potato diseases in Idaho and across the country follow us on
twitter. http://www.twitter.com/potatodiseases
Another Lso-positive psyllid found in an Idaho potato field
Potato All Locations
potato psyllids
Posted on: June 19, 2015 by Erik Wenninger
June 19, 2015 – Another Lso-positive psyllid found in a potato field
No psyllids collected last week were positive; however, one of the psyllids collected this week from a Twin Falls County potato field tested positive for Lso, the bacterium that causes zebra chip. A few psyllids collected this week remain to be tested.
Psyllid abundance this week was similar to last week. Potato psyllids were found this week in the following counties: Payette, Canyon, Gooding, Jerome (two fields), and Twin Falls (two fields).
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Another Lso-positive psyllid found in an Idaho potato field
Potato All Locations
potato psyllids
Posted on: June 19, 2015 by Erik Wenninger
June 19, 2015 – Another Lso-positive psyllid found in a potato field
No psyllids collected last week were positive; however, one of the psyllids collected this week from a Twin Falls County potato field tested positive for Lso, the bacterium that causes zebra chip. A few psyllids collected this week remain to be tested.
Psyllid abundance this week was similar to last week. Potato psyllids were found this week in the following counties: Payette, Canyon, Gooding, Jerome (two fields), and Twin Falls (two fields).
We continue to urge growers and crop consultants to have an IPM program in place and to supplement our monitoring program with their own local monitoring.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Small Grains Field Days this week - Arbon, Rockland and Rupe
Small Grains All Locations
various pests discussed
Posted on: June 14, 2015 by Juliet Marshall
Please feel free to attend the Cereal Field Tours hosted by the University of Idaho on Wednesday and Thursday!
Rockland and Arbon Valley:
The Cereal Field Day in Power County this year will feature variety plots at both Rockland Valley and Arbon Valley locations on Wednesday, June 17th. The Rockland Valley Field Day will begin at 9:30 a.m. at the plot site on Deeg Road. Head South on Rock Creek Road, and take a right on Deeg road. The plots are about ½ mile on the north side. The Arbon Valley Field Day will begin at 2:00 p.m. at the Hayden Farm. The plots are located on Mid Crystal Road near the Hayden home. Please see the attached map for directions.
Dr. Jianli Chen, University of Idaho Wheat Breeder stationed at Aberdeen, will present potential new spring and winter wheat releases. Dr. Juliet Marshall, Extension Crop Management Specialist, will lead a discussion on cereal disease issues that have come up this year.
Growers in attendance will be encouraged to tour the variety plots at each location. Refreshments will be provided by the Power County Wheat Growers Association.
Rupert Minidoka:
We will be touring both Winter and Spring extension variety Trials, starting at 9:30. Meet at the spring variety trial site - 925 E 700 N. Rupert.
Lunch provided - sponsored by Helena Chemical
Contact Joel Packham at:
Joel Packham;(208) 878-9461 or jpackham@uidaho.edu
Small Grains Field Days this week - Arbon, Rockland and Rupe
Small Grains All Locations
various pests discussed
Posted on: June 14, 2015 by Juliet Marshall
Please feel free to attend the Cereal Field Tours hosted by the University of Idaho on Wednesday and Thursday!
Rockland and Arbon Valley:
The Cereal Field Day in Power County this year will feature variety plots at both Rockland Valley and Arbon Valley locations on Wednesday, June 17th. The Rockland Valley Field Day will begin at 9:30 a.m. at the plot site on Deeg Road. Head South on Rock Creek Road, and take a right on Deeg road. The plots are about ½ mile on the north side. The Arbon Valley Field Day will begin at 2:00 p.m. at the Hayden Farm. The plots are located on Mid Crystal Road near the Hayden home. Please see the attached map for directions.
Dr. Jianli Chen, University of Idaho Wheat Breeder stationed at Aberdeen, will present potential new spring and winter wheat releases. Dr. Juliet Marshall, Extension Crop Management Specialist, will lead a discussion on cereal disease issues that have come up this year.
Growers in attendance will be encouraged to tour the variety plots at each location. Refreshments will be provided by the Power County Wheat Growers Association.
Rupert Minidoka:
We will be touring both Winter and Spring extension variety Trials, starting at 9:30. Meet at the spring variety trial site - 925 E 700 N. Rupert.
Lunch provided - sponsored by Helena Chemical
Contact Joel Packham at:
Joel Packham;(208) 878-9461 or jpackham@uidaho.edu
Potato Pest Alert for the week ending 6-12-2015
Potato All Locations
Posted on: June 12, 2015 by Phill Wharton
Pest Alert for the week ending 6-12-2015
Welcome to the new weekly potato disease update for southern Idaho. For the rest of the growing season we will be posting weekly disease updates from around the potato growing regions in southern Idaho.
Dr. Mike Thornton reports that rows are closed/closing in most fields in the Treasure Valley region so growers are focused on late blight/ early blight/ white mold fungicide applications. There have been reports from across the state of some seed lots with relatively high incidences of PVY. With all the excess rain that we had in May, some growers are reporting problems with Fusarium seed piece decay after planting (see http://bit.ly/1FdrZNw for more information).
With the wet May weeds have been more of a problem this spring and are expected to be a problem as the season progresses. Dr. Pam Hutchinson produced a handy article on how to deal with weeds in your potatoes this year (http://bit.ly/1MPv3pq).
The very mild winter we had has also led to a big problem this year with volunteer potatoes showing up across the state (http://bit.ly/1Thgv6p). Volunteer potatoes can harbor diseases such as late blight and increase the risk of a late blight epidemic. For information on what fungicides to use for managing late blight see the article recently published by Dr. Jeff Miller of Miller Research and Dr. Phill Wharton from UI (http://bit.ly/1Q4tmty).
For up to date information on potato diseases in Idaho and across the country follow us on twitter. http://www.twitter.com/potatodiseases
Potato Pest Alert for the week ending 6-12-2015
Potato All Locations
Posted on: June 12, 2015 by Phill Wharton
Pest Alert for the week ending 6-12-2015
Welcome to the new weekly potato disease update for southern Idaho. For the rest of the growing season we will be posting weekly disease updates from around the potato growing regions in southern Idaho.
Dr. Mike Thornton reports that rows are closed/closing in most fields in the Treasure Valley region so growers are focused on late blight/ early blight/ white mold fungicide applications. There have been reports from across the state of some seed lots with relatively high incidences of PVY. With all the excess rain that we had in May, some growers are reporting problems with Fusarium seed piece decay after planting (see http://bit.ly/1FdrZNw for more information).
With the wet May weeds have been more of a problem this spring and are expected to be a problem as the season progresses. Dr. Pam Hutchinson produced a handy article on how to deal with weeds in your potatoes this year (http://bit.ly/1MPv3pq).
The very mild winter we had has also led to a big problem this year with volunteer potatoes showing up across the state (http://bit.ly/1Thgv6p). Volunteer potatoes can harbor diseases such as late blight and increase the risk of a late blight epidemic. For information on what fungicides to use for managing late blight see the article recently published by Dr. Jeff Miller of Miller Research and Dr. Phill Wharton from UI (http://bit.ly/1Q4tmty).
For up to date information on potato diseases in Idaho and across the country follow us on twitter. http://www.twitter.com/potatodiseases
First Lso-positive psyllid found in a potato field in Idaho
Potato All Locations
potato psyllids
Posted on: June 12, 2015 by Erik Wenninger
One of the psyllids (from Ada County) that we found last week in potato fields tested positive for Lso, the bacterium that causes zebra chip. The remaining psyllids that we collected last week tested negative for Lso.
This week we found more psyllids on sticky traps in potato fields in the following counties: Canyon, Ada, Gooding (two different fields), and Twin Falls (two different fields). In addition, suspected potato psyllids from a field in Owyhee County and an additional field in Canyon County are being shipped to us for confirmation, which should occur on Monday.
Last week, in a partnership with ISDA, we inspected for potato psyllids on tomato and pepper plants at four different retail nurseries in the Twin Falls area and found no psyllids. This week we inspected four different retail nurseries in the Burley area and found one tomato plant with many psyllid nymphs. These are being tested for Lso. The importance of retail nurseries in harboring potato psyllids and Lso remains to be clarified, but this is one possible source of the disease.
We continue to urge growers and crop consultants to have an IPM program in place and to begin local monitoring of fields, especially near the recent findings of Lso-positive psyllids.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
First Lso-positive psyllid found in a potato field in Idaho
Potato All Locations
potato psyllids
Posted on: June 12, 2015 by Erik Wenninger
One of the psyllids (from Ada County) that we found last week in potato fields tested positive for Lso, the bacterium that causes zebra chip. The remaining psyllids that we collected last week tested negative for Lso.
This week we found more psyllids on sticky traps in potato fields in the following counties: Canyon, Ada, Gooding (two different fields), and Twin Falls (two different fields). In addition, suspected potato psyllids from a field in Owyhee County and an additional field in Canyon County are being shipped to us for confirmation, which should occur on Monday.
Last week, in a partnership with ISDA, we inspected for potato psyllids on tomato and pepper plants at four different retail nurseries in the Twin Falls area and found no psyllids. This week we inspected four different retail nurseries in the Burley area and found one tomato plant with many psyllid nymphs. These are being tested for Lso. The importance of retail nurseries in harboring potato psyllids and Lso remains to be clarified, but this is one possible source of the disease.
We continue to urge growers and crop consultants to have an IPM program in place and to begin local monitoring of fields, especially near the recent findings of Lso-positive psyllids.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields over the season. Updates to these spreadsheets may occur throughout the week as Lso testing results come in.
http://www.uidaho.edu/extension/news/psyllid-management
Potato psyllids found in more potato fields and bittersweet
Potato All Locations
potato psyllids
Posted on: June 5, 2015 by Erik Wenninger
The one potato psyllid that we found in a potato field last week tested negative for Lso, the bacterium that causes zebra chip.
This week we found more potato psyllids in potato fields, including one psyllid on a sticky trap in each of five different fields (three in Canyon County, one in Ada County, and one in Jerome County). We also found one psyllid in a vacuum sample from a different Jerome County field.
From our bittersweet nightshade sites, we found 25 potato psyllids from among three of our sites in Twin Falls County and one psyllid from one of our Ada county sites.
This week, in a partnership with ISDA, we inspected for potato psyllids on tomato and pepper plants at four different retail nurseries in the Twin Falls area. Although we had found potato psyllids in nurseries in previous years, we were unable to find any during this inspection.
We continue to urge growers and crop consultants to have an IPM program in place and to begin local monitoring of fields.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields.
http://www.uidaho.edu/extension/news/psyllid-management
Potato psyllids found in more potato fields and bittersweet
Potato All Locations
potato psyllids
Posted on: June 5, 2015 by Erik Wenninger
The one potato psyllid that we found in a potato field last week tested negative for Lso, the bacterium that causes zebra chip.
This week we found more potato psyllids in potato fields, including one psyllid on a sticky trap in each of five different fields (three in Canyon County, one in Ada County, and one in Jerome County). We also found one psyllid in a vacuum sample from a different Jerome County field.
From our bittersweet nightshade sites, we found 25 potato psyllids from among three of our sites in Twin Falls County and one psyllid from one of our Ada county sites.
This week, in a partnership with ISDA, we inspected for potato psyllids on tomato and pepper plants at four different retail nurseries in the Twin Falls area. Although we had found potato psyllids in nurseries in previous years, we were unable to find any during this inspection.
We continue to urge growers and crop consultants to have an IPM program in place and to begin local monitoring of fields.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields.
http://www.uidaho.edu/extension/news/psyllid-management
UI Snake River Pest Management Research Tours
All Crops All Locations
Posted on: June 2, 2015 by Don Morishita
Please join us for our annual pest management tours coming up on June 23rd at the UI Kimberly R&E Center and June 24th at the UI Aberdeen R&E Center. Registration for both events begins at 8:00 am and the tour will start at 8:30 am. An industry sponsored lunch will be held at noon at both locations. Below is an agenda for each day. Our contact information also is listed below.
UI Snake River Pest Management Research Tours
Kimberly R&E Center, 3806 N. 3600 E., Kimberly, ID- June 23rd
Aberdeen R&E Center, 1693 S 2700 W Aberdeen, ID- June 24th
Registration begins at 8:00 am
UI Snake River Pest Management Research Tour- Kimberly R&E Center, 6/23/15
8:20 to 8:30
Greetings, introductions and announcements
8:30 to 12:00
Turf-
Field bindweed and other weed management in bluegrass turf with herbicides and fertilizer
Sugar beets-
Effect of tillage and fertility rate on insect and weed management in sugar beet
Soil-active herbicides for weed control in direct seed and strip till sugar beet
Evaluation of chloroacetamide and glyphosate tank mixtures for weed control in sugar beet
Insecticide seed treatment leaf miner study
Beet and root Aphid insecticide trial
Potatoes-
Update on weed management in potato
Colorado potato beetle trials-
ISK and Monsanto
General insecticide trial focused on potato psyllids- PNW Potato Research Consortium
Potato psyllid & zebra chip insecticide trial.
Timing and density of psyllid infection on zebra chip development
Wireworm insecticide trial
Silver scurf, phytosanitary tool for export using CIPC
PVY and other emerging viruses
Zebra chip disease in potato.
Potato variety storage research- varieties from the tri-state potato breeding program.
Cereals-
Wheat insect pest management update in small grains and other crops
Comparison of triallate with other wild oat herbicides for wild oat control and crop safety in spring wheat
Comparison of triallate with broadleaf herbicides for weed control and crop safety in spring wheat
Comparison of herbicides for broadleaf weed control and crop safety in spring wheat
Comparing broadleaf and wild oat herbicides in spring wheat
Dry beans-
Dry bean row spacing, plant growth habit and herbicides for season-long weed control
Preplant and postemergence herbicides for weed control in furrow-irrigated dry bean
Time of day effects on Basagran for weed control in dry bean.
Use of adjuvants with Basagran for weed control in dry bean.
Preemergence and postemergence herbicides for weed control in sprinkler-irrigated dry bean
Field corn-
Weed control in field corn with pre- and postemergence herbicides
Alfalfa-
Alfalfa seed coating for disease management and stand establishment.
Vole damage management in alfalfa.
For more information contact Don Morishita (don@uidaho.edu), at 208.423.6616.
Aberdeen R&E Center Weed Tour
UI Snake River Pest Management Research Tour- Kimberly R&E Center, 6/23/15
8:20 to 8:30
Greetings, introductions and announcements
8:30 to 12:00
Weed control in potato with 2- and 3-way tank mixtures,
Potato variety tolerance to herbicides
Eptam formulations rate and timing
Weed control in Litchi tomato (PCN trap crop).
Updates from Juliet Marshall, Phill Wharton, and Arash Rakesh on disease and insect infestations this year
Cropping systems study- Xi Liang
For more information contact Pam Hutchinson (phutch@uidaho.edu), 208.397.4181.
First 2015 potato psyllid found in ID potato field & first 2
Potato All Locations
potato psyllids and ZC
Posted on: May 29, 2015 by Erik Wenninger
We collected our first samples from potato fields this week, and found a potato psyllid on a sticky trap in a field in Twin Falls County. This is the first psyllid we’ve found in a potato field this season and the only one we’ve found in potato so far this week (though we are waiting to receive cards for several sites).
In addition, of the 8 adult psyllids we collected last week from bittersweet nightshade in Twin Falls County, three (one each from three different sites in the canyon) tested positive for Lso, the bacterium that causes zebra chip. This is the first time that we have ever found positive psyllids from our bittersweet nightshade samples.
Given that this is the earliest we have ever found potato psyllids in potato and the first time we have ever found positive psyllids from bittersweet nightshade, we strongly urge growers and crop consultants to have an IPM program in place and to begin local monitoring of fields.
Consult our website for more information, including online spreadsheets that show details of the psyllid captures in potato fields.
http://www.uidaho.edu/extension/news/psyllid-management
Stripe Rust Alert (Wheat) and Spot Form of Net Blotch (Barle
Small Grains All Locations
Stripe rust and Spot Form of Net Blotch
Posted on: May 27, 2015 by Juliet Marshall
Spring and Winter Wheat
1) Stripe rust
Stripe rust is being reported from a widespread area, including northern Utah, western Idaho, southern Idaho (Twin Falls and Burley / Rupert area) and now eastern Idaho (Newdale and Blackfoot).
All reports so far have been in Brundage soft white winter wheat.
Brundage is very susceptible. If you have not be applying fungicides to this variety up to now, I would consider it infected and treat with a triazole fungicide which has some curative activity.
Strobilurin products may have reduced efficacy on stripe rust if the plants are already infected.
The Pre-Harvest Interval (PHI) has been reached in some winter wheat production at which time it is too late to apply fungicides. Always follow label directions.
Spray appropriate fungicides on susceptible spring wheat varieties at herbicide application.
2) BYD
Barley yellow dwarf symptoms are re-occurring in infected fields. Expect to see flag leaves with the typical yellow and red “flags”. For more information, see http://www.uidaho.edu/extension/cereals/scseidaho and click on publications to download the BYD bulletin published by the UI. The heavy rains have really helped to mitigate the damage.
3) RWA
Russian Wheat Aphids are damaging wheat in several areas - look for white (bleached) stripes on tightly curled leaves, and trapped heads which appear similar to frost damaged heads. We are seeing frost damage (which is the likely cause in the picture below) and RWA damage in wheat. RWA will colonize both wheat and barley.
Winter and Spring barley
1) BYD problems may resurface as plants begin to head. Expect to see flag leaves with the typical yellow and red “flags”. For more information, see http://www.uidaho.edu/extension/cereals/scseidaho and click on publications to download the BYD bulletin published by the UI. The heavy rains have really helped to mitigate the damage from the virus.
2) SFNB = Spot Form of Net Blotch is showing in barley fields, especially if the field has second year crops or has infected residue from the previous year. The disease can also survive on grassy weeds and volunteer barley, and be spread by infected seed. Use full strength fungicides for control when spraying herbicides for weed control.
» http://www.uidaho.edu/extension/cereals/scseidaho
2015 Potato psyllid monitoring program underway
Potato All Locations
potato psyllids
Posted on: May 22, 2015 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state is continuing our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip.
Monitoring on 17 of our “Light” sites began last week (all in the Treasure Valley) and 4 of our “Intense” sites (all in the Magic Valley) with the deployment of sticky cards. We found no potato psyllids on cards at any of these sites this week. Deployment of sticky cards began on many more sites this week as well. We expect to have a total of around 75 “Light” sites and 13 “Intense” sites across the state; this is similar to last year.
Online spreadsheets showing details of the psyllid captures in potato fields will go live next week.
We have been monitoring for psyllids within presumed overwintering habitat, including bittersweet nightshade and field bindweed sites, and we found 8 adult potato psyllids and many nymphs on bittersweet nightshade this week in Twin Falls County (no psyllids were found in Treasure Valley sites this week). These psyllids are now in transit to Moscow to be tested for Lso.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/extension/news/psyllid-management
Weed management in potatoes
Potato All Locations
Weeds
Posted on: May 21, 2015 by Pam Hutchinson
I’ve had many calls about weed control in potatoes because of high rainfall amounts, excessive soil moisture this spring.
Please see the attached WORD document for my thoughts on what may happen - what are the possibilities for weed control in potatoes due to these conditions.
Coddling Moth Timing
Tree Fruits All Locations
Coddling Moth
Posted on: May 19, 2015 by Tony McCammon
Wilbur Ellis Spray Scheduling for this week:
Fruitland/Payette May 24th 350 DD
Parma/ Roswell May 23rd 350 DD
SunnySlope May 23rd 350 DD
Magic Valley May 25 350 DD
Pocatello May 30 350 DD
Rexburg June15 350 DD
Update on Idaho Potato Psyllid Monitoring
Potato All Locations
potato psyllids
Posted on: May 1, 2015 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by IPC, ISDA, and USDA. More details on the program will be forthcoming, but it will be similar to what we’ve done over the last two years.
We have been monitoring for psyllids during the off-season within presumed overwintering habitat, including bittersweet nightshade and field bindweed sites, as well as within last year’s potato plots at the Kimberly Research & Extension Center (which have been bare soil all winter). We’ve been finding psyllids in relatively low numbers on bittersweet nightshade and field bindweed intermittently throughout the off-season, but for the first time since last fall we found several potato psyllids on sticky cards within the bare fields at KREC. It is too early to tell what kind of psyllid year we will have, but finding apparently dispersing psyllids this early (during the previous three years psyllids had not appeared until June) suggests that we all should be on the lookout early this year for potato psyllids.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Stripe rust in wheat
Small Grains All Locations
Stripe rust
Posted on: April 29, 2015 by Juliet Marshall
Stripe rust was found (thanks Dr. Oliver Neher for being so observant!) in the Parma area, on the Parma research station in winter wheat that's in the boot stage. While not yet severe, I fully expect it to be widespread. Be prepared to spray susceptible varieties as stripe rust heads east.
Information on variety reactions is available in our small grains report (in variety descriptions and in an appendix table that describes spring wheat reactions).
http://www.uidaho.edu/extension/cereals/scseidaho/sgr
Also check the disease page on our website for additional information:
http://www.uidaho.edu/extension/cereals/scseidaho/disease
» http://www.uidaho.edu/extension/cereals/scseidaho/sgr
Fruit Pest Advisory Issue 2
Tree Fruits All Locations
Codling Moth, Aphids, Fireblight, Thinning recommendations
Posted on: April 23, 2015 by Tony McCammon
This is the second Pest advisory, Things are not slowing down, if you have a crop to protect get prepared.
Fruit Pest Advisory Issue 1
Tree Fruits All Locations
Posted on: April 7, 2015 by Tony McCammon
Here is the first Pest advisory for fruit crops in Idaho for this year. More to come.
BYD problems in winter grain
Small Grains All Locations
Barley Yellow Dwarf Virus
Posted on: March 27, 2015 by Juliet Marshall
Our winter wheat and winter barley crops have broken dormancy very early - I’d say we are 3 - 4 weeks ahead of “average" and almost all of our spring wheat is planted.
About 3 weeks ago, we started having symptoms of BYD showing in winter cereal fields. Two times in the last two weeks I have taken a tour through the southern part of the state. In most areas, 85-95% of our winter wheat fields are showing 95-100% incidence. Some are severe, and growers are removing (spraying and plowing) some of these fields and replanting spring grain or dry beans. Growth stages are tillering to jointing.
Contributing factors include unusual rains last August, high populations of aphids in the fall (especially in the corn that was green chopped), a long fall, and we have had one of the warmest winters / earliest springs on record. Full rates of insecticidal seed treatments have been ineffective due to a long warm fall and high aphid populations.
Dr. Arash Rashed and I have been wiring very hard to obtain ELISA and qPCR confirmation before sending out too many alerts to the growers. I did send an alert March 16th, but didn’t want to do another until we had proof positive - double - that what we were seeing was totally accurate. It is so widespread that even I was questioning myself. It is EVERYWHERE - from Parma to Idaho Falls and Ririe.
We also have severe drought conditions, which makes mitigation more difficult and damage potentially more severe. Many growers will not be able to apply irrigation for another 1-3 weeks.
We have virus in wheat, barley, timothy and field borders, roadsides, ditch banks, and farmyard grasses.I expect greater than 30% losses, in some fields greater than 60% losses. Winter malt barley fields will not make malt. Many winter wheat fields will have to go for feed.
BYDV confirmed
Small Grains All Locations
BYDV
Posted on: March 12, 2015 by Juliet Marshall
Winter wheat and winter barley is showing significant symptoms of BYDV in Burley area. See the publication for additional information.
Symptoms have been confirmed with ELISA and PCR.
Direct Seed Workshop, Idaho Falls March 11
Small Grains All Locations
Meeting announcment
Posted on: February 11, 2015 by Juliet Marshall
Direct Seed Workshop - March 11, 2014
Shilo Inn, Idaho Falls, 780 Lindsay Blvd
Direct Seed 101—Grower Panel
High Residue Farming In Irrigated Cropping Systems
Alfalfa to No-Till Corn: A Cropping Rotation We Can Learn From & Glyphosate Usage
Soil Moisture, Nutrients, and Weeds in No-Till cropping Systems
Why Understand Wireworms at a Fundamental Level?
» http://www.idahowheat.org/education/direct-seed-workshop.aspx
Cereal Schools in southern Idaho
Small Grains All Locations
Diseases and Insects Galore! Fertilizer, Falling Numbers, and Varieties
Posted on: January 27, 2015 by Juliet Marshall
Upcoming Cereal Schools - CCA and ISDA pesticide credits available.
Need to see an AGENDA? check out http://www.uidaho.edu/extension/cereals/scseidaho/upcoming-events
ALL SCHOOLS START AT 8:30 AM (registration) with presentations beginning at 9:00 AM
Feb 3rd - Burley, Idaho. Burley Inn. 800 N. Overland Ave.
Feb 4th - Pocatello, Idaho. Red Lion Hotel, 1555 Pocatello Creek Road.
Feb 5th - Ashton, ID. Trails Inn Restaurant
Feb 5th - Idaho Falls, ID. Bennion Student Union, University Place. 1784 Science Center Drive NEW LOCATION parking in the back
Feb 6th - Preston, ID. Robinson Fair Grounds, 186 West 2nd North.
» http://www.uidaho.edu/extension/cereals/scseidaho
» http://www.uidaho.edu/extension/cereals/scseidaho/upcoming-events
Organic Farming Conference
Announcements All Locations
Posted on: January 14, 2015 by Jennifer Miller
For Immediate Release
January 13, 2015
Contacts:
Arlie Sommer, 503-312-1415, Northwest Center for Alternatives to Pesticides
Tony Brand, 208-420-3052, Northwest Center for Alternatives to Pesticides
Organic Farming Conference Set for January 30
Twin Falls, ID – Farmers interested in enhancing the fertility of their soil through the use of cover crops are invited to attend a Friday, January 30 conference in Twin Falls. A farmer-to-farmer exchange of knowledge and best practices will follow the sessions, that afternoon. Additionally, farmers will see presentations on a new crop insurance program and future market opportunities with Clif Bar and Amy’s Kitchen.
The event is presented by the Northwest Center for Alternatives to Pesticides (NCAP), with additional support from University of Idaho (UI), Oregon State University (OSU) and USDA.
Nick Andrews, OSU Small Farms Extension Agent, Amber Moore, UI Soil Fertility Specialist and Lauren Hunter, UI Extension Specialist, will present the latest, science-based approaches to organic soil nutrient management and cover cropping. Farmers will learn how to monitor the nitrogen value of cover crops and plan their organic inputs to meet crop needs.
Anne Berblinger, organic farmer of Gales Meadow Farm, in Forest Grove, OR, will describe her work with Nick Andrews on soil health, cover cropping, and organic nutrient management planning and monitoring. She will also take attendees on a virtual tour of her farm, where she grows more than 300 varieties of vegetables and herbs, direct marketing product to consumers and local chefs. She participates in an OSU vegetable seed-breeding project, including conducting variety tastings with chefs. She will also show the native hedgerow she installed to provide habitat for beneficial insects and other wildlife.
Farmers will learn about future organic market opportunities in Idaho, through a session moderated by the Idaho State Department of Agriculture. Representative from Amy’s Kitchen and Clif Bar will discuss how they source organic products and the potential of sourcing ingredients grown in Idaho.
Jo Lynne Seufer of USDA Risk Management Agency will share information about a new crop insurance program, Whole-Farm Revenue Protection, designed for needs of specialty crop, organic and diverse farms.
The conference will be held at the Herrett Center of the College of Southern Idaho, Twin Falls, ID on Friday, January 30 from 8:30 a.m. to 4:30 p.m. Pre-registration is required by January 26th. Register online at www.pesticide.org or contact Arlie Sommer, agworkshops@pesticide.org or 503-312-1415.
Funding is provided in part by USDA.
PNW Pest Alert Survey
Announcements All Locations
Posted on: December 15, 2014 by Jerry Neufeld
Thanks to everyone that completed a pest alert annual survey. The winners of the Outback Steakhouse gift certificates are Jason Myers, Aaron Ball and John Hartman. Certificates will be mailed out ASAP.
Idaho Ag Market Outlook Seminar
Announcements All Locations
Posted on: December 1, 2014 by Jerry Neufeld
The Idaho Ag Market Outlook Seminar, offered by U of Idaho Extension, is being held at several locations across Idaho in December. Click on the pdf below for more information.
First Brown Marmorated Stink Bug found in Ada County
Tree Fruits All Locations
Brown Marmorated Stink Bug
Posted on: October 30, 2014 by Paul Castrovillo
On October 20, 2014 the first capture of a brown marmorated stink bug (Halyomorpha halys) in Ada County was confirmed. An alert homeowner in the Boise North End found the living insect in his garage and brought it to ISDA for verification of his identification. A follow-up inspection of the property failed to turn up any more specimens, which at this time would be attempting to locate suitable protected overwintering sites. In the spring, when stink bug activity would be expected to resume another inspection will be made and brown marmorated stink bug pheromone traps will be set up in the neighborhood to determine whether or not a population has established. Brown marmorated stink bug is an invasive pest from Asia. In the US it was first collected in Pennsylvania during the late 1990’s and since then has been detected in 41 states, with large infestations in the East and even some outbreak areas in Oregon, Washington and Utah. It feeds on a number of fruit and vegetable crops and can be a nuisance pest when congregating in human dwellings. In 2012 several specimens were transported from Maryland to Nampa, with reports of a few escaping, however no evidence of an established population has been uncovered in that area through subsequent inspections or trapping. With questions please contact Paul.Castrovillo@agri.idaho.gov or call 208-332-8627.
2014 Miller Research Potato Pest Management Seminar
Potato All Locations
Posted on: October 29, 2014 by Jeff Miller
The 2014 Miller Research Potato Pest Management Seminar will be held Wednesday, December 10 and Tuesday, December 16. Please see the attached flier for program information. The same program will be held on both days. There is not cost to attend and lunch will be provided. Please RSVP to Jeff Miller (jeff@millerresearch.com or 431-4420) so that we that can plan accordingly. 3 CCA (Integrated Pest Management) and 3 ISDA credits are available.
2014 Idaho Association of Plant Pathology
All Crops All Locations
Posted on: October 22, 2014 by Jeff Miller
The Idaho Association of Plant Protection will be holding its annual meeting at the Jerome Best Western on Wednesday, November 5 from 10:00 until 5:00. Registration begins at 9:30 am. Due to the limited number of presentations, the meeting will only be only one day. Please distribute this announcement to any who might be interested. The cost to attend is $15 payable in cash or check (sorry - credit cards are not accepted). A total of 5 ISDA pesticide recertification credits and 4.5 CCA Pest Management credits are available. Please contact Oliver Neher (oneher@amalsugar.com) or Erik Wenninger (erikw@uidaho.edu) if you have any questions.
Idaho potato psyllid monitoring update
Potato All Locations
potato psyllids
Posted on: October 10, 2014 by Erik Wenninger
All of the potato fields we have been monitoring have been vine killed. We are still monitoring a few harvested fields and our overwintering sites. In the coming weeks we will put together a summary of the monitoring results from this year.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
2014 Japanese Beetle Field Season Finishes
Announcements All Locations
Japanese Beetle
Posted on: October 6, 2014 by Paul Castrovillo
Traps all over the state came down last week signifying the end of Japanese Beetle (JB) monitoring in Idaho for the 2014 field season. In total 1,283 adult beetles were collected in the traps between June 19 and October 1. That is a 58% reduction compared to the 3,058 JB captured during 2013. This is attributed to the effect of targeted insecticide treatments that were part of the current JB eradication program in Boise. One area in the Warm Springs neighborhood where 1,930 beetles were trapped in 2013, and which was subsequently treated, produced only 92 adults this summer – down 95%. JB were not found in traps located anywhere else in the state.
Data is currently being analyzed and plans being made for monitoring/treatment of JB in 2015. This information, once finalized, will be available on the Idaho State Department of Agriculture website. With questions please contact Paul.Castrovillo@agri.idaho.gov or call 208-332-8627.
Idaho Psyllid Monitoring Update
Potato All Locations
Potato Psyllids
Posted on: October 3, 2014 by Erik Wenninger
Only one potato psyllid was found this week, in Twin Falls County, at one of our “intense” monitoring fields. Very few fields remain as we are nearing the end of the season. None of the psyllids tested from last week was positive for liberibacter (Lso), the bacterium that causes zebra chip.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
potato psyllid update
Potato All Locations
potato psyllids
Posted on: September 26, 2014 by Erik Wenninger
Most of our fields have now undergone vine kill and are no longer being monitored. The busy harvest season has delayed delivery to our lab of some cards from this week (including those from a few sites in western Idaho that have been trapping the most potato psyllids); those results will be posted as early as possible next week. Among the few remaining sites still being monitored, we did trap one psyllid in Cassia County (the first capture at that site this year) and a few psyllids at two different sites in Canyon County.
In addition, a psyllid that was collected from a Canyon County field on Sept 8 tested positive for liberibacter, the bacterium that causes zebra chip.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Pesticide Disposal Program
Announcements All Locations
Posted on: September 25, 2014 by Jerry Neufeld
Click on the pdf below for information about the Idaho State Department of Agriculture’s Fall 2014 Pesticide Disposal Program for several locations across southern Idaho.
potato psyllid and ZC update
Potato All Locations
potato psyllids
Posted on: September 19, 2014 by Erik Wenninger
Potato psyllids continue to be trapped at relatively high rates in just a few fields in Western Idaho (Canyon, Owyhee, and Elmore counties). We also trapped one psyllid in a field in Jerome County this week. None of the psyllids tested from last week was positive for liberibacter (Lso), the bacterium that causes zebra chip. During this busy harvest season, we are still waiting for some cards to come into our lab, so those results will be posted as early as possible next week.
Many of the fields we are monitoring have undergone vine kill. For those fields that have yet to be vine killed, it is important to consider management options for psyllids and zebra chip in order to keep the crop protected until harvest—especially in western Idaho where psyllid numbers have been higher.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
One more Lso-positive psyllid found in Idaho
Potato All Locations
potato psyllids
Posted on: September 12, 2014 by Erik Wenninger
A potato psyllid collected from a grower’s field in Owyhee County last week tested positive for liberibacter (Lso), the bacterium that causes zebra chip disease. This psyllid was collected on a sticky trap in the same field that trapped an Lso-positive psyllid two weeks before. During this week we trapped an additional eight psyllids (average of two per card) in that same field that will be tested for Lso. We also trapped psyllids in a few other sites in Canyon and Elmore Counties this week. Again, psyllid captures were higher this week in western Idaho than central and eastern Idaho; only one psyllid was found on a sticky trap in the Magic Valley this week (Twin Falls County).
Many of the fields we are monitoring have undergone vine kill. For those fields that have yet to be vine killed, it is important to consider management options for psyllids and zebra chip in order to keep the crop protected until harvest—especially in western Idaho where psyllid numbers have been higher.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Idaho Association of Plant Protection
All Crops All Locations
Posted on: September 8, 2014 by Jeff Miller
Dear colleagues,
This is a call for papers for the 2014 annual meeting of the Idaho Association of Plant Protection in Jerome, ID at the Best Western Sawtooth Inn and Suites on Wednesday, November 5 at 1:00 pm to Thursday, November 6 at 12:00 p.m.
Please consider contributing research results, observations, unusual disease occurrences, etc. to the meeting. Please do NOT plan a long, formal presentation. Talks will be limited to 15 minutes with 5 minutes of discussion. A final program will be advertised in late October. Registration begins at 12:30 p.m. on Wednesday and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Hotel reservations at the Best Western Sawtooth Inn can be made by calling 208-324-9200. Indicate you will be attending the IAPP meetings. Regular rooms are available at the corporate rate of $69.99 + tax, but reservations must be made prior to October 21.
Please reply by email or complete and return the bottom half of the attached sheet. If you are not attending this meeting but would like to be notified of future meetings, please send us your updated contact information.
We would appreciated it if you could circulate the attached memorandum to interested individuals and colleagues who are not in this group.
Thank you and we are looking forward to seeing you in November.
Idaho psyllid monitoring update
Potato All Locations
potato psyllids
Posted on: September 5, 2014 by Erik Wenninger
Potato psyllid captures in our monitoring program were at similar levels to the previous two weeks (i.e., slightly higher than in previous weeks, though still relatively low compared to previous years). Again, most psyllids—nearly all this week—were found in the Treasure Valley (Canyon and Owyhee Counties) or Elmore County. In addition we captured one psyllid at a site in Twin Falls County. Psyllid numbers were the highest we’ve seen yet this year (1.25 or 1.75 on average per card). This is not surprising given the trend of increasing psyllid numbers toward the end of the season that we have observed during the last two years. It is important to consider management options for psyllids and zebra chip in order to keep the crop protected until harvest.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
ISDA pesticide disposal program
Announcements All Locations
Posted on: September 2, 2014 by Jerry Neufeld
The Idaho State Department of Agriculture will be holding a pesticide disposal program across southern Idaho in the coming days. Click on the pdf below for the schedule.
One more Lso-positive psyllid found in Idaho
Potato All Locations
potato psyllids
Posted on: August 29, 2014 by Erik Wenninger
Potato psyllid captures in our monitoring program slightly increased last week and remained at similar levels this week. Most psyllids during the last two weeks were found in the Treasure Valley (Canyon, Payette, Owyhee Counties) or Elmore County.
In addition, one of the psyllids collected in Owyhee County last week tested positive for Lso (liberibacter; the bacterium that causes zebra chip). This is only the second psyllid that has tested positive so far in the commercial fields we have been monitoring.
We typically observe an increase in psyllid captures at the end of the growing season; however, it is likely that the heavy rains we have experienced recently have affected psyllid numbers. It is important to consider management options for psyllids and zebra chip in order to keep the crop protected until harvest.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
ISDA Pesticide Disposal Program
All Crops All Locations
Posted on: August 27, 2014 by Jeff Miller
The Idaho State Department of Agriculture will be conducting its Fall Pesticide Disposal program again this fall. Specific information on places and times is available at the attached link.
» http://www.agri.idaho.gov/Categories/Pesticides/Documents/PDP%20Doc/2014PDPFallCollections.pdf
Potato Late Blight Continues to Spread
Potato All Locations
Late blight
Posted on: August 22, 2014 by Phil Nolte
Two fields with late blight in Fremont County were confirmed today. There are multiple late blight fields in Madison, Bingham, Bonneville and Power Counties. The current recommendation is if anyone in the affected counties has not applied a protectant fungicide to their potato fields do so immediately. Until vine kill the University of Idaho recommends that potato fields be kept on a 7 day spray schedule. Rain is predicted to continue in all of the current late blight infected counties and rain is very efficient at moving late blight spore around. .
It is essential to protect green, growing vines with fungicide applications. Spores of the late blight pathogen are washed from the foliage into the soil causing tubers to become infected. Sometimes tuber infection can occur with very little foliar late blight. Protecting the foliage of Ranger Russet fields is particularly important because the vines remain green longer and the tubers are highly susceptible to tuber infection.
If late blight is present in your field, we recommend a post-harvest application of a phosphorous acid (phosphite) product going into storage at the rate of 12.8 fl oz/ton applied at a volume of 0.5 gal/ton of potatoes. Ensure you are not over-applying which may add too much water to the harvested potatoes. Potatoes should NOT be shiny wet, but rather barely damp. Apply at a point in the handling process where potatoes are rotating or dropping to ensure the best coverage. These post-harvest products will not cure infected tubers but will protect healthy tubers form becoming infected in storage.
Please bring any suspicious samples in to the University of Idaho or Miller Research for positive identification.
Idaho Psyllid Monitoring Update
Potato All Locations
Potato Psyllids
Posted on: August 22, 2014 by Erik Wenninger
Potato psyllid captures in our monitoring program slightly increased this week in terms of numbers (but remain relatively low compared to previous monitoring years) and locations (Magic and Treasure Valleys). Psyllids were found on sticky traps in commercial potato fields in Owyhee, Canyon, Ada, Elmore, and Twin Falls Counties.
None of the psyllids found so far in commercial fields (except for one on Canyon County during mid-July) has tested positive for Lso (liberibacter; the bacterium that causes zebra chip).
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Late blight in Idaho
Potato All Locations
Late blight
Posted on: August 20, 2014 by Phil Nolte
An additional potato field in Madison County has been confirmed with late blight.
Previously, late blight had been confirmed in Power County, Bonneville County, and Bingham County. The current recommendation from the University of Idaho is for everyone to apply a protectant fungicide immediately. The rain showers we have been experiencing lately provide perfect conditions for late blight to spread. Please remember that late blight also has the ability to infect tubers growing in the ground as spores move from the plants into the soil. Stay on a 7 day spray schedule and continue to scout fields carefully. Please bring any suspicious samples in to the University of Idaho or Miller Research for positive identification.
Sprout damage in grain
All Crops All Locations
Rain at Harvest
Posted on: August 19, 2014 by Juliet Marshall
Guidance to Idaho malting barley producers experiencing higher than acceptable sprout damage in their 2014 malting barley crop
Growers are urged to be patient and not panic as they try to complete their 2014 growing season. We recommend producers follow these steps:
1. Follow best management harvesting practices, particularly avoid harvesting lodged barley. Beware that injured by sprout barley is more fragile and more susceptible to skinned and broken kernels.
2. Quickly harvest the remaining grain to prevent growth of molds. Sooty molds will increase off flavors in malt and reduce suitability for feed.
3. Store your barley with good aeration. Grain is stored best if it is cool, dry and clean. The recommended maximum moisture content for storage of clean sound barley during warm summer temperatures is 12%. Barley can be stored at slightly higher moisture content if it is kept cool.
4. Take a good bin sample as your put your barley into storage and work with your malting barley company to have the barley tested for injured by sprout.
5. Be patient and give your malting company time to determine what portion of your crop can be used as malting.
6. Try to avoid dumping your barley as feed at harvest as the commercial feed barley prices have been dropping rapidly.
Your malting companies are going to extraordinary lengths to test Idaho malting barley that has been injured by sprout and to determine how much can be used for malting. They are researching and micro malting samples to determine the highest limit of sprout damage they can take without compromising the malting and brewing process.
It is important to understand why sprout damage poses a risk in the brewing process. Pre-harvest sprouting (PHS) or pre-germination impacts the ability of barley to germinate. Problems can range from a slow loss of germinative energy or capacity over time in storage to the complete loss of germination at the time of harvest. Barley used for malting must exhibit vigorous and uniform germination. In malting, pre-harvest sprouted barley can lead to poorly modified malt that is unsuitable for the production of beer. Low extract yields, poor beer stability and off-flavors are just a few of the problems that can result from PHS damaged barley.
Barley kernels remain resistant to sprouting prior to physiological maturity. Some varieties maintain a level of resistance (dormancy) for a significant time after harvest. Certain conditions like heavy rainfall at maturity can reduce this level of resistance to germination.
The bottom line is that barley with sprout damage, even if it germinates well after harvest, can lose germination rapidly in storage. There are no tests that can predict when a sudden drop in germination will occur. Even if a relatively high degree of germination remains in a lot of barley, the germination may be uneven with some kernels germinating much slower than others in that lot resulting in a malt that does not meet brewers minimum specifications for beer production.
Full documents at: http://www.uidaho.edu/extension/cereals/scseidaho
For more information, please contact Kelly Olson, Idaho Barley Commission Boise office 208-334-2090, cell 208-409-9165 or our Idaho Falls satellite office, cell 208-569-6957. Dr. Juliet Marshall, University of Idaho, Idaho Falls, 208-529-8376, cell 208-390-4859.
Additional confirmed late blight fields
Potato All Locations
Late blight
Posted on: August 15, 2014 by Nora Olsen
Late blight has been positively confirmed in Idaho. Today one field has been confirmed in Power County and one field in Bonneville County. There are a total of three confirmed late blight fields in Bingham County. The current recommendation from the University of Idaho is for everyone to apply a protectant fungicide immediately. The rain showers we have been experiencing lately provide perfect conditions for late blight to spread. Please remember that late blight also has the ability to infect tubers growing in the ground as spores move from the plants into the soil. A quick reminder, tomatoes in home gardens are also susceptible to late blight infections. Stay on a 7 day spray schedule and continue to scout fields carefully. Please bring any suspicious samples in to the University of Idaho for positive identification.
potato psyllid update
Potato All Locations
potato psyllids
Posted on: August 15, 2014 by Erik Wenninger
Potato psyllid captures in our monitoring program were similar to recent weeks in terms of numbers (relatively low) and locations (Magic and Treasure Valleys). Psyllids were found on sticky traps in commercial potato fields in Canyon, Ada, Jerome, and Twin Falls Counties. This represents the first potato psyllid captured in Ada County in our monitoring network this year. We also captured four psyllids in vacuum samples at bittersweet nightshade sites in Twin Falls County.
None of the psyllids found so far in commercial fields (except for one on Canyon County during mid-July) has tested positive for Lso (liberibacter; the bacterium that causes zebra chip).
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Farming with Pollinators and Beneficial Insects Field Day
All Crops All Locations
Posted on: August 14, 2014 by Jennifer Miller
For Immediate Release
August 14, 2014
Contact:
Jennifer Miller, 208-850-6504, Northwest Center for Alternatives to Pesticides
Farming with Pollinators and Beneficial Insects Field Day
The Northwest Center for Alternatives to Pesticides invites farmers interested in increasing pollinator and beneficial insect habitat on their farms to attend a Wednesday, September 3 field day.
Clay and Josie Erskine of Peaceful Belly Farm, located in the Dry Creek Valley north of Boise, will host the field day from 9 am – 12:30 pm.
The Erskines will show how they have incorporated pollinator and beneficial insect habitat on their farm by planting willows in a riparian area, native bunch grasses and clover on farm roads, perennials into a hedgerow, and the management of successive plantings of brassicas to flowering.
Jessa Kay Cruz, senior pollinator conservation specialist with the Xerces Society, will present her work with farmers to establish habitat for pollinators and beneficial insects in irrigated cropping systems. She will cover how to assess existing habitat and identify areas to improve, year-round beneficial insect and pollinator habitat requirements, and certified organic methods of site prep for establishing habitat.
Copies of the Xerces Society’s new book Farming with Native Beneficial Insects: Ecological Pest Control Solutions will be available to review or purchase.
The field day will conclude with a farm lunch and discussion of funding opportunities, including a new microloan program through Farm Service Agency and conservation funding through Natural Resources Conservation Service.
The cost is $15 and pre-registration is required. Register online at www.pesticide.org or contact Jen Miller (jmiller@pesticide.org or 208-850-6504) by August 27. Details at www.pesticide.org.
This tour is made possible by support from USDA Natural Resources Conservation Service Conservation Innovation Grant, USDA Risk Management Agency Education partnership funding, and University of Idaho Canyon County. This is an equal opportunity event.
Late blight in potatoes - Bingham County
Potato All Locations
Late blight
Posted on: August 12, 2014 by Phil Nolte
Late blight has been positively confirmed in Idaho. Today a potato leaf sample was brought into the University of Idaho for identification with sporulating lesions. The sample was from Bingham County. The current recommendation from the University of Idaho is to apply a protectant fungicide immediately. With more rain in the forecast for the rest of the week in this area it is important to spray and scout field thoroughly for symptoms. Please bring any suspicious samples in to the University of Idaho for positive identification.
Idaho psyllid monitoring update
Potato All Locations
potato psyllids
Posted on: August 8, 2014 by Erik Wenninger
Relatively few potato psyllids were captured in our monitoring program this week overall, and, similar to recent weeks, most psyllids captured were found in the Magic Valley. Of these, most were found in fields in Twin Falls County, though we did find two psyllids in a field in Minidoka County this week (the first finds this year in this county). In addition, we found a psyllid in Canyon County and, for the first time this year, in Payette County.
None of the psyllids found so far in commercial fields (except for one on Canyon County during mid-July) has tested positive for Lso (liberibacter; the bacterium that causes zebra chip).
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
potato psyllid update
Potato All Locations
potato psyllids
Posted on: August 1, 2014 by Erik Wenninger
Few potato psyllids were captured in our monitoring program this week overall, and psyllids were found this week only in Twin Falls County (however, results from several Treasure Valley sites have not yet been returned to us). One of these was a nymph, found in a vacuum sample from a commercial field; this is the first nymph found this summer in our monitoring program. In addition to the few psyllids found in our network of commercial potato fields, we also found four psyllids on yellow sticky cards near bittersweet nightshade sites in Twin Falls County, and several potato psyllids on sticky cards and in vacuum samples taken from insecticide trials at the Kimberly R&E Center. Nearly all of the Idaho Potato Team has been at the Potato Association of America meetings in Spokane this week. We regret the delay this has caused in testing psyllids for Lso (liberibacter; the bacterium that causes zebra chip). Samples are currently being processed and we expect to post results to the spreadsheets below by early next week.
Detailed results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Detailed results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 29, 2014 by Jeff Miller
Miller Research will be holding its annual Potato Pest Management Field Day on Thursday, August 14 from 9:00 am to 12:00 pm. The attached flier provides specific details. Topics will include foliar disease management (early blight, white mold, gray mold), the use of Vydate as an alternative to metam sodium, and an update on potato psyllids/ZC in our area. Lunch will be provided. There is no cost to attend, but please RSVP so that we can plan appropriately. Please respond to Jeff Miller at either jeff@millerresearch.com or (208) 531-5124.
We have received 3 CCA (Integrated Pest Management) credits and have requested 3 ISDA credits.
potato psyllid update
Potato All Locations
potato psyllids
Posted on: July 25, 2014 by Erik Wenninger
Psyllid numbers captured in our monitoring program this week were similar to the numbers captured last week; however, we found for the first time this year potato psyllids on sticky traps in potato fields in the following counties: Owyhee, Gooding, Cassia, and Power. As reported earlier this week, one potato psyllid collected last week (Canyon County) tested positive for liberibacter (Lso), the bacterium that causes zebra chip disease. No other psyllids tested so far this year have been positive.
Potato psyllids are beginning to appear in more counties, including those that are further east in our monitoring network. Local monitoring and management programs should be in place in these areas.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
First Lso-positive potato psyllid in Idaho during 2014
Potato All Locations
potato psyllids
Posted on: July 23, 2014 by Erik Wenninger
We have confirmed within our monitoring network our first liberibacter-positive potato psyllid in Idaho. The psyllid was collected last week from a yellow sticky card in a potato field in Canyon County. Liberibacter (Lso) is the bacterium that causes zebra chip disease. This positive psyllid and other data from the monitoring program will be incorporated before the end of the week into the online spreadsheets available at the links below. Now is the time to step up local monitoring and management programs in the area.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 18, 2014 by Erik Wenninger
We have observed a notable increase in the number of psyllids captured in our monitoring program this week relative to previous weeks this year (though still much lower than toward the end of the last two seasons). Psyllids were found on sticky traps in two potato fields in Canyon County, two fields in Elmore County, three fields in Twin Falls County, and two fields in Jerome County. In addition, this week we found potato psyllids on sticky cards deployed near bittersweet nightshade plants at two sites in Twin Falls County. These psyllids are currently being tested or are on their way to being tested for liberibacter (Lso, the bacterium that causes zebra chip). All psyllids collected so far this year have been negative for Lso. Some sticky cards from last week were just returned to our lab early this week and were also found to have potato psyllids (one psyllid from a field in Twin Falls County and two psyllids from a field in Jerome County); these psyllids are currently being tested for Lso.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data come into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
potato psyllid and ZC update
Potato All Locations
potato psyllids
Posted on: July 11, 2014 by Erik Wenninger
Three potato psyllids were found this week in University of Idaho’s potato psyllid monitoring program. One psyllid was found for the first time at the Kimberly Research & Extension Center (Twin Falls County) in a vacuum sample from our insecticide trial plots. Two additional psyllids (one per field) were found in potato fields in Twin Falls and Jerome Counties on sticky traps. These psyllids are on their way to be tested for liberibacter (Lso, the bacterium that causes zebra chip). All psyllids collected so far this year have been negative for Lso. Some sticky cards have yet to be returned to our lab; results from those sites will be posted early next week.
We still encourage monitoring of potato psyllids, and insecticide programs should be prepared.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data come into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
New barley disease
Small Grains All Locations
Spot Form of Net Blotch
Posted on: July 7, 2014 by Juliet Marshall
Last year, a new barley disease was seen for the first time west of Blackfoot.
This year, numerous examples have been seen of the Spot Form of Net Blotch, also called SFNB. So far, we are not able to determine damage estimates for our production conditions. In other areas where the disease occurs (Montana, MonDak areas), losses of 50-75% have been reported. Again, there are no estimates of damage potential here. Full rates of fungicides are recommended for control in susceptible varieties. The 2014 PNW Plant Disease Management Handbook lists the following fungicides for control (this list may not be inclusive of all effective fungicides): Headline (6-9 fl oz/A), Stratego (7 fl oz/A), Vertisan (14-24 fl oz/A), Priaxor Xemium (4-8 fl oz / A).
Please see attached pictures.
» SFNB
» SFNB
stripe rust
Small Grains All Locations
Stripe rust in wheat and barley
Posted on: July 7, 2014 by Juliet Marshall
Stripe rust has been reported in UI Pettit in the Rockford area south west of Blackfoot.
Stripe rust has been reported in Snow Crest
Stripe rust has been reported in Paloma, Blackfoot area.
Stripe rust has been reported in WB936 on west side of Idaho Falls.
Stripe rust has been reported in a spring feed barley (http://www.westbred.com/Products/Northwest/Barley%20Documents/WESTBRED_501.pdf) north of Rupert and south of Burley. The barley was in milk to soft dough. Fungicide application is not recommended for the barley, and in addition the allowable time frame has passed for fungicide application in that field.
Warmer temperatures should slow the rate of spread, but the nighttime cool temperatures and irrigated conditions will still allow the fungi to advance. IF the infections are appearing within the appropriate time frame, fungicide application is recommended to reduce yield loss in susceptible varieties. Please read and follow all label directions.
Idaho Psyllid Monitoring Update
Potato All Locations
Potato Psyllids
Posted on: July 3, 2014 by Erik Wenninger
No new potato psyllids were found this week in University of Idaho’s potato psyllid monitoring program. All previously collected psyllids, including the three from last week, were found to be negative for Lso.
We still encourage monitoring of potato psyllids, and insecticide programs should be prepared.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data comes into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Stripe rust on spring wheat
Small Grains All Locations
Stripe rust in wheat
Posted on: June 30, 2014 by Juliet Marshall
Stripe rust continues to expand in the susceptible winter wheat varieties, and is even developing in kernels of WB470. It is likely TOO LATE to spray fungicides on any winter wheat except those in the northernmost growing areas (Ashton, St. Anthony) and is most likely past legal application in those areas as well. Remember there is a pre-harvest interval for application - read and follow label directions.
It is NOT TOO LATE to protect susceptible spring wheat. High levels of SR are being reported in the Bingham county area in Snow Crest hard white spring wheat. Strobilurin fungicides will protect wheat from infection by stripe rust but will not have the curative properties if infection is present in the field - in that case it is best to include a triazole fungicide or mixes of strobi’s and triazoles.
Current conditions, especially these cool nighttime temperatures, are favorable for infection and continued spread.
Thanks to all who have reported the occurrence of SR in their area or fields!
» http://www.extension.uidaho.edu/scseidaho/disease/stripe_rust.htm
powdery mildew in sugarbeets
Sugarbeets All Locations
powdery mildew
Posted on: June 30, 2014 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the western Treasure Valley of Oregon. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Depending on the disease pressure, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.
Idaho Psyllid Monitoring Update
Potato All Locations
Potato Psyllids
Posted on: June 27, 2014 by Erik Wenninger
Three potato psyllids were found this week in University of Idaho’s potato psyllid monitoring program. One psyllid was found for the first time in Jerome County on a sticky trap in a potato field. Another psyllid was found in Canyon County on a sticky trap in a potato field. The third psyllid was found in a vacuum sample in Twin Falls county from a potato field. We are awaiting results on these psyllids and the psyllid found last week from the test for liberibacter (Lso, the bacterium that causes zebra chip). All other psyllids collected so far this year have been negative for Lso. Some sticky cards have yet to be returned to our lab, and results from those sites will be posted early next week.
We still encourage monitoring of potato psyllids, and insecticide programs should be prepared.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data comes into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
stripe rust
Small Grains All Locations
Stripe rust in wheat
Posted on: June 25, 2014 by Juliet Marshall
Stripe rust has now been reported in multiple locations throughout the region, including areas near Shelley, Rising River, Plano, and Ft. Hall in the soft white winter varieties Brundage and WB 470. Some of the winter wheat crop is in grain fill, and milk to soft dough. Please be aware that the winter wheat growth stages may be beyond the labeled legal application of fungicides for pre-harvest intervals. Depending on fungicide, the cut-off timing may be 50% flowering - CHECK LABELS BEFORE application.
Of greatest concern now would be vulnerable spring wheats that are susceptible to stripe rust. These would include Klasic, Snow Crest, UI Pettit, WB 936, Lochsa, Lolo, Kelse, WB-Paloma.
» http://www.extension.uidaho.edu/scseidaho/disease/stripe_rust.htm
Idaho potato psyllid monitoring update
Potato All Locations
potato psyllids
Posted on: June 20, 2014 by Erik Wenninger
One potato psyllid was found this week in University of Idaho’s potato psyllid monitoring program on a sticky trap in a potato field in Canyon County. We are awaiting results on this psyllid from the test for liberibacter (Lso, the bacterium that causes zebra chip). All other psyllids collected so far this year have been negative for Lso. Some sticky cards have yet to be returned to our lab, and results from those sites will be posted early next week.
We still encourage monitoring of potato psyllids, and insecticide programs should be prepared.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data comes into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Fruit Pest Advisory
Tree Fruits All Locations
PDF file error correction
Posted on: June 18, 2014 by Tony McCammon
My apologies if your PDF document did not open. Here is the correction.
Fruit Tree Advisory
Tree Fruits All Locations
WFCC, Codling Moth, Leafhopper, Mites, and Shothole disease
Posted on: June 18, 2014 by Tony McCammon
Attached find an advisory covering current spray recommendations and better orchard management considerations.
Idaho psyllid monitoring update
Potato All Locations
Posted on: June 13, 2014 by Erik Wenninger
No new psyllids were found this week in University of Idaho’s potato psyllid monitoring program, and all psyllids collected so far have been negative for liberibacter (Lso, the bacterium that causes zebra chip). This includes the few psyllids collected from bittersweet nightshade plants in Twin Falls County that had yet to be tested as well as some potato psyllids found on pepper plants at a local garden center.
We still encourage monitoring of potato psyllids throughout the Treasure and Magic Valleys, and insecticide programs should be prepared.
Online spreadsheets with detailed results of psyllid captures are available at the links below. These are updated periodically over the week as data comes into our lab.
Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Glyphosate-resistant kochia
Sugarbeets All Locations
kochia
Posted on: June 11, 2014 by Don Morishita
Suspected glyphosate-resistant kochia has been reported in at least two locations in western Idaho and eastern Oregon sugar beet fields. It is critical to watch for kochia escapes in sugar beet and Roundup Ready corn fields. Please report any suspicious kochia escapes to your local crop consultant, crop advisor, extension educator, Joel Felix (OSU weed scientist), or Don Morishita (UI weed scientist).
Idaho potato psyllid monitoring update
Potato All Locations
potato psyllids
Posted on: June 9, 2014 by Erik Wenninger
Last week we reported finding six potato psyllids across potato fields in Malheur (Oregon), Payette, and Canyon Counties. The sticky traps were collected by one of our cooperators, and we regret to report that there was a miscommunication regarding whether these potato psyllid identifications had been confirmed by an expert entomologist. After arrival of the samples at the Kimberly R&E Center over the weekend, we confirmed that these were NOT potato psyllids. We apologize sincerely for the error. All future samples will run through our lab (or a qualified entomologist known to our program) before being reported (this has always been our policy, but a miscommunication regarding whether this had happened caused this mistake).
Although we now have no confirmed potato psyllid captures in potato fields in the Treasure Valley, we do have confirmed reports of potato psyllids in the Columbia Basin (both Washington and Oregon), and we have confirmed potato psyllids from our sampling network in Jerome County (potato field) and Twin Falls County (bittersweet nightshade sites). Therefore, monitoring throughout the Treasure and Magic Valleys should be increased and insecticide programs should be prepared.
All potato psyllids tested so far for liberibacter (Lso, the bacterium that causes zebra chip) have been negative. This includes the psyllid found in Jerome County and the first three psyllids found on bittersweet nightshade plants in Twin Falls County.
The online spreadsheets with updates of psyllid captures occurring throughout the week are up and running. Results for the “intense” fields, which are monitored with 10 sticky traps, vacuum samples, and leaf samples are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
Results for the “light” fields, which are monitored with 4 sticky traps are here:
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdG15WTNRMkEteHRWRGhpM2ltSXBiR3c#gid=0
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdGVrX2t2NGs0YzlYYUZaQkNaejhES2c#gid=0
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
More potato psyllids found in Idaho potato fields
Potato All Locations
potato psyllids
Posted on: June 7, 2014 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 18 that covers commercial potato fields throughout southern Idaho.
Earlier this week, we reported finding one potato psyllid on a yellow sticky trap in a potato field in Jerome County. In addition, this week on yellow sticky traps we have found a total of six more psyllids across four potato fields located in Malheur (Oregon), Payette, and Canyon Counties.
This week we also collected six psyllids across two bittersweet nightshade sites in Twin Falls County.
All of these psyllids have been sent to the main campus to be tested for liberibacter (Lso), the bacterium that causes zebra chip disease.
The online spreadsheet that shows detailed results of the monitoring efforts and location of fields (by county) will be available very soon.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
More potato psyllids found in Idaho potato fields
All Crops All Locations
potato psyllids
Posted on: June 6, 2014 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 18 that covers commercial potato fields throughout southern Idaho.
Earlier this week, we reported finding one potato psyllid on a yellow sticky trap in a potato field in Jerome County. In addition, this week on yellow sticky traps we have found a total of six more psyllids across four potato fields located in Malheur (Oregon), Payette, and Canyon Counties.
This week we also collected six psyllids across two bittersweet nightshade sites in Twin Falls County.
All of these psyllids have been sent to the main campus to be tested for liberibacter (Lso), the bacterium that causes zebra chip disease.
The online spreadsheet that shows detailed results of the monitoring efforts and location of fields (by county) will be available very soon.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
First 2014 potato psyllid found in Idaho potato field
Potato All Locations
potato psyllids
Posted on: June 4, 2014 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 18 that covers commercial potato fields throughout southern Idaho. The project is funded in part by IPC, ISDA, and USDA. Thirteen fields are being monitored weekly with 10 yellow sticky cards, vacuum samples, and leaf samples. Approximately 75 additional fields are being monitored weekly with 4 yellow sticky cards; scouting efforts in some fields (especially in eastern Idaho) are still being initiated.
Our first potato psyllid was found in Jerome County on a sticky card that was deployed May 27 and retrieved June 3. This psyllid is being overnighted to the main campus to be tested for liberibacter (Lso), the bacterium that causes zebra chip disease.
We still have more sticky traps from this week that remain to be read. By the end of this week we will provide access to an online spreadsheet that shows results of the monitoring efforts and location of fields (by county).
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Stripe rust on wheat
Small Grains All Locations
Stripe rust in wheat
Posted on: May 30, 2014 by Juliet Marshall
Stripe Rust was confirmed in the Hazleton area with one field of Brundage soft white winter wheat, showing heavy and uniform infection stripe rust infection. Many Brundage fields in the area are already scheduled for aerial application of fungicides to reduce spread and damage. Winter wheat in that area is about 50% headed.
Brad Brown, Extension Soil and Crop Management Specialist in Parma, has reported stripe rust in winter wheat in the Parma area. I don’t know extent or variety at this time.
Currently throughout the southern Idaho production area, early-planted winter wheat is starting to head or is past flowering in western Idaho. Yields are still vulnerable at this time. WSU recommendations include spraying if a field shows 5-10% stripe rust severity or incidence unless you know that the variety is 90-95% resistant. Susceptible varieties, like Brundage SHOULD BE SPRAYED with fungicides – strobilurins are excellent protectants, but consider triazoles alone or tank mixed with strobilurins if stripe rust is already present in the area. Triazoles have some curative activity.
Most of the wheat and barley varieties grown in the area will have adult plant resistance, which will aid in preventing extensive losses, and as the weather becomes warm and dry, spread should decrease. Fewer varieties will have seedling resistance. This leaves seedling and pre-jointing wheat vulnerable to infection. Follow the scouting recommendations, of looking for areas that appear nitrogen deficient and searching for pustules on lower leaves. As with winter wheat, if there is 5-10% infection in the spring wheat, spraying with fungicides is highly recommended. In spring wheat, susceptible varieties should be sprayed with fungicides at herbicide application.
Consider the economics of spraying. Susceptible crops with high yield potential (especially irrigated crops) should be at the top of the priority list for spraying. Losses of up to 60% and greater can occur in susceptible varieties.
Scout seedling spring wheat aggressively. The earlier the infection, the greater the potential loss. Look for early infection on the lower leaves.
Consider spraying when 10% of any leaf on 10% of the plants are showing pustules. Follow all label directions when spraying fungicides.
Protect the flag leaf! About 1/3 of carbohydrates for grain fill comes from that flag leaf.
DON’T:
Spray with a fungicide after grain fill is too late.
Spray after most of the flag leaves are showing 5-10% infection - it may be too late to control economic damage.
Don’t assume previously resistant varieties are safe from infection. The pathogen can change genetically and infect previously resistant varieties.
» http://www.extension.uidaho.edu/scseidaho/disease/stripe_rust.htm
Fruit Tree Advisory
Tree Fruits All Locations
Codling Moth, Thinning, PTB
Posted on: May 28, 2014 by Tony McCammon
Here is the latest advisory for fruit growers. This issue covers thinning, fertilization, PTB, codling moth, and shot hole disease.
Fruit Pest Advisory Issue 2
Tree Fruits All Locations
Codling Moth, Fireblight, Aphid, Blister Mite
Posted on: May 13, 2014 by Tony McCammon
Open the document to view the second issue of the Pest advisory for Idaho. Codling Moth Spray Timing, IPM for Codling moth, Fireblight awareness. Get off on the right foot in your fruit management.
Fruit Pest Advisory
Tree Fruits All Locations
Codling Moth, Fireblight,
Posted on: April 29, 2014 by Tony McCammon
In this newsletter get ready for Codling Moth protection as we enter the first stage of Control measures. Increase your scouting for Fire blight and new aphid colonies. And get an answer to how safe is our food.
Open the pdf file to view the advisory.
Pesticide Disposal Program
Announcements All Locations
Posted on: March 28, 2014 by Jerry Neufeld
Click on the pdf below for information about ISDA’s Pesticide Disposal Program schedule for 2014. Locations will be Nampa, Weiser, Lewiston and Coer D’ Alene.
Barley Yellow Dwarf in Winter Barley
Small Grains All Locations
Barley Yellow Dwarf Virus
Posted on: March 27, 2014 by Juliet Marshall
BYD in winer barley was reported to me by Steve Hines in the Filer area. Pictures show symptoms very characteristic of BYD. We should be keeping an eye out (scouting) for winter wheat and barley fields affected by the problem.
Symptoms include yellowing of leaves, stunting of plants both above and below ground (look for small root systems), and irregular heading with small heads in affected plants. Often, the most severe symptoms will occur along field edges and the edges created along the tracks of pivot tires. (Please see pictures.) There may also be a yellowing to a very characteristic reddening of leaves of infected weedy grasses in nearby ditch banks, which also host the virus and aphids. Additional symptoms may also include notching of the leaf margins, twisting, leaf tip scorch, and abnormal development of emerging leaves.
Yield losses increase with earlier infections, especially if the infection occurred in the previous fall (which is very likely to be the issue here) and can approach 100% in severely affected fields, especially in early-infected winter barley. Fall infection occurs as large populations of aphids migrate from other crops to newly emerged wheat or barley. Aphids are attracted to lush growth that occurs under irrigation, often leaving plants in dryland corners alone. Those plants emerging earlier or planted earlier were more likely to attract viruliferous aphids.
The species of aphids that can carry the BYDV viruses are many, but
the most common culprits include Bird cherry-oat aphids and English grain aphids. Greenbug and corn leaf aphids can also transmit the BYDV virus.
The virus strain identified by molecular techniques in 2013 (by Dr. Alex Karasev, UI virologist in Moscow) was the PAV strain of BYDV, which is efficiently transmitted by the Bird cherry oat aphid (Ropalosiphum padi) and the English grain aphid (Schizaphis avenae). Aphids can pick up the BYDV virus from infected wild and cultivated grasses, volunteer cereals, and corn.
The virus spreads only in conjunction with the movement of the aphid vector, and virus transmission is greater at low temperatures. The virus is not seed-borne.
At this point, reducing crop stress will reduce the effect of the virus on the plant, but yield losses will occur both through reduced grain production as well as reduced test weight. The most effective control is through the use of resistant varieties, but insecticidal seed treatments may reduce the initial spread in fall wheat and barley. Viruliferous
aphids will still transmit the virus in the fall before the insecticides kill the aphid, but as the insecticides wear off over time, new invading aphids will continue to transmit virus.
Current aphid populations are very low, and spring wheat and barley
should escape early infection. Reducing infection in the fall-planted grain includes adjusted (later) planting dates to avoid peak aphid activity.
» BYDV
Webinar on the use of cover crops
All Crops All Locations
Posted on: March 3, 2014 by Nora Olsen
The American Society of Agronomy is sponsoring a four-part webinar series on the use of cover crops. There is no cost to participate, but enrollment is required at least one hour prior to the start time (11:00 am Mountain Time). The webinar schedule is as follows:
Cover Crops, Soil Health Principals and Maximizing Yields - March 6, 2014
Combining Livestock, Manure and Cover Crops - March 13, 2014
Cover Crops Seed Selection and Planting - March 20, 2014
Cover Crop Management and Termination - March 27, 2014
Each webinar will be conducted by a USDA scientist and a farmer who has experience with the use of cover crops. Full participants in the webinar, who are certified, will automatically receive CEUs. CCAs and CPAgs will receive 1.0 CEU in Soil and Water Management. CPSS and CPSC certificants will receive 1.0 CEU in Professional Meetings.
More information can be found at: https://www.agronomy.org/education/online-courses
Pollinator & Beneficial Insect Short Course and Grower’s Own
All Crops All Locations
Posted on: January 14, 2014 by Jennifer Miller
For Immediate Release
January 14, 2014
Contact:
Jennifer Miller, 208-850-6504, Northwest Center for Alternatives to Pesticides
Pollinator & Beneficial Insect Short Course and Grower’s Own Conference Set
Caldwell, ID – Farmers interested in enhancing the free pollination and pest management services of pollinators and beneficial insects are invited to attend a Friday, February 7 short course in Caldwell. The short course will be followed by the fifth annual Grower’s Own Conference, a farmer-to-farmer exchange and networking event, on Friday evening and Saturday, February 8.
The event is presented by the Northwest Center for Alternatives to Pesticides (NCAP), Xerces Society, and University of Idaho Extension.
The latest science-based approaches to attracting and conserving beneficial insects will be presented by the Xerces Society, a national leader in pollinator conservation. Participants will learn how to conduct a habitat assessment; methods of incorporating pollinator and beneficial insects habitat around building sites, as annual plantings, or as permanent plantings in buffers and hedgerows; and conservation funding sources to support on-farm habitat installation.
Participants will receive the Xerces Society’s Pollinator Conservation toolkit, including the book, Attracting Native Pollinators: Protecting North America’s Bees and Butterflies. The toolkit is valued at $40.
A select number of participants will receive direct support from the Xerces Society and NCAP, following the short course, in conducting an on-farm habitat assessment and developing a habitat planting plan.
The fifth annual Grower’s Own Conference will be held following the short course. Friday evening will kick off the conference with “virtual” farm tours by Fred and Judy Brossy of Ernie’s Organics in Shoshone, Clay and Josie Erskine of Peaceful Belly Farm in Boise, and Karen Evans of Rollingstone Chevre in Parma.
The conference continues on Saturday, February 8 with a session on a new loan program supporting local foods by USDA Farm Service Agency and concurrent group discussions on a variety of topics. Attendees actively participate in the selection of the topics by voting during registration. Some of the topics under consideration include multispecies cover cropping; nuts & bolts of habitat installation; farm expansion considerations; agritourism; high tunnels; mechanical cultivation; farmers market sales strategies; food safety; starting livestock production; and value-added products.
The short course and conference will be held at the College of Idaho in Caldwell, Idaho. Registration fees are as follows: Pollinator & Beneficial Insect Short Course is $40; Grower’s Own Conference is $55; Both Short Course & Conference is $80. Pre-registration is required by January 24. Register online at www.pesticide.org or contact Jennifer Miller at jmiller@pesticide.org or 208-850-6504.
Funding is provided in part by USDA.
PestAlert evaluation gift certificates
Announcements All Locations
Posted on: December 13, 2013 by Jerry Neufeld
Thanks to everyone that recently completed an evaluation for the Pest Alert Network.
The winners of the $75 gift certificates to the Outback Steakhouse are Brett Lolley, Don Barowsky and Drew Glascock.
I will put the prizes in the mail today.
Miller Research Potato Pest Management Meeting
Potato All Locations
Posted on: December 3, 2013 by Jeff Miller
The 2013 Miller Research Potato Pest Management Seminar will be held December 16 and 17 (same program both days). The meetings start at 9:00 and conclude at 12:30. The cost is $10 and lunch will be provided. If you are planning on attending, but have not responded, please RSVP so that we can plan appropriately for lunch. A total of 3 CCA (integrated pest management) and 3 ISDA pesticide recertification credits are available. A complete agenda can be found on the attached flier.
UI Winter Extension Programs
Announcements All Locations
Posted on: November 21, 2013 by Jerry Neufeld
Click on the pdf below for dates and locations of University of Idaho 2013-2014 Winter Extension Programs. Some of these programs will offer credits for pesticide licenses.
Potato Pest Management Meeting
Potato All Locations
Posted on: November 15, 2013 by Jeff Miller
Miller Research LLC will be holding its annual potato pest management research meeting on Monday, December 16 and Tuesday, December 17. The same program will be repeated both days and seating in each session is limited to 45. The meetings will be held at the Miller Research facility located near Acequia, ID (426 E 200 N). The cost to attend is $10 and lunch will be provided. A detailed agenda with program topics is attached.
Please RSVP as to which session you would like to attend to Jeff Miller at 208-531-5124 or by email at: jeff@millerresearch.com so that we can get an accurate count for lunch and room preparation purposes.
A total of 3 ISDA pesticide recertification credits have been requested and 3 CCA credits (Integrated Pest Management) have been awarded.
» http://www.millerresearch.com/alerts/research-news/item/43-mr-potato-pest-management-workshop
Pesticide MRL Workshop
Announcements All Locations
Posted on: November 8, 2013 by Jerry Neufeld
Attached is a flyer for an upcoming Pesticide Maximum Residue Level Workshop. Workshop is December 2, 9 am to 4:30 pm at Hampton Inn in Nampa, Idaho. Click on the pdf below for more information.
Pesticide MRL Workshop
All Crops All Locations
Posted on: November 8, 2013 by Jerry Neufeld
Attached is a flyer for an upcoming Pesticide Maximum Residue Level Workshop. Workshop is December 2, 9 am to 4:30 pm at Hampton Inn in Nampa, Idaho. Click on the pdf below for more information.
2013 IAPP Annual Meeting
Announcements All Locations
Posted on: October 30, 2013 by Jeff Miller
The final program for the 2013 Idaho Association of Plant Protection is finally available. The meeting will be held at the Sawtooth Inn Best Western in Jerome on November 5 from 1:00 to 5:00 pm and November 6 from 8:00 to 10:00 am. Registration begins at 12:00 pm on November 5. Please contact Jeff Miller at (208) 431-4420 if you have any questions.
ew Tart Cherry and Table Grape Insurance Coverage and Fruit
Tree Fruits All Locations
Insurance Coverage
Posted on: October 23, 2013 by Tony McCammon
New Tart Cherry and Table Grape Insurance Coverage and Fruit Sales Closing Dates
SPOKANE, Wash., Oct. 23, 2013 — USDA’s Risk Management Agency (RMA) today announced the coverage availability for Tart Cherry Actual Revenue History and Table Grape Multi-Peril Crop Insurance (MPCI) programs for the 2014 crop year.
Tart Cherry (for processing) Actual Revenue History (ARH) Insurance is available in Adams, Franklin, and Grant counties in Washington.
Table Grape Crop Insurance is available in Canyon County, Idaho.
Fruit producers are reminded of the upcoming sales closing date Wednesday, November 20, for apple, blueberry, sweet and tart cherry actual revenue history, cranberry, grape, pear, table grape, and stonefruit crops (apricots, nectarines, freestone peaches, and plums/prunes).
Current policyholders and uninsured growers must make all of their decisions on crop insurance coverage before the sales closing date. If there is no coverage in a county for a specific crop under the traditional MPCI program; producers may ask a crop insurance agent whether they would be eligible for coverage under a written agreement.
Producers are encouraged to visit their crop insurance agent soon to learn specific details for the 2014 crop year. Federal crop insurance program policies are sold and delivered solely through private crop insurance companies and agents. A list of crop insurance agents is available at all USDA service centers throughout the United States or on the RMA web site at www3.rma.usda.gov/tools/agents.
Id. Assoc. Plant Protection Annual Mtg.
Announcements All Locations
Posted on: October 4, 2013 by Jerry Neufeld
The Idaho Association of Plant Protection is holding its annual meeting November 5-6 at the Sawtooth Best Western Inn in Jerome. Please see the attached memorandum for more information. Please feel free to share this invitation with anyone who may be interested.
Those interesting in presenting can fill in the attached form and return it to either Jeff Miller (jeff@millerresearch.com) or Oliver Neher (o.t.neher@gmail.com). Please contact either Jeff or Oliver if you have any additional questions.
Scouting for Armyworms in South East Idaho
All Crops All Locations
true armyworm
Posted on: October 2, 2013 by Arash Rashed, Juliet Marshall
Scouting for armyworms in South East Idaho
University of Idaho. Pest alert, October 2nd, 2013.
Dr. Arash Rashed, Insect Ecology and Entomology
Dr. Juliet M. Marshall, Cereal Agronomy and Pathology
Very high densities of true armyworms Pseudaletia unipuncta Haworth (Lepidoptera: Noctuidae) were observed in areas of South Eastern Idaho. The armyworm presence was confirmed in at least three fields in Pleasant Valley, following reports of unusual and severe defoliation of volunteer plants in harvested spring wheat (Figure 1). Here is provided some information on identifying armyworms, their lifecycle, and control measures.
What they look like? At this time of year (mid-late September) they could be found in their larval and pupal stages. Like other moth larvae and caterpillars, armyworms possess three pairs of true legs located closer to the head, on the first three segments of the body. There are a series of fleshy legs, or so-called prolegs, on the abdominal (4 pairs) and anal (1 pair) segments. Late instar larvae are approximately 1.5 inches long. Although their body color may vary, a series of orange, black, and brown stripes that run longitudinally along the side of their body is characteristic (Figure 2a). The head is relatively large and brown in color. A closer look at the head would reveal a brownish net-shaped pattern (Figure 2b). The face is characterized with an inverted Y, pale in color (Figure 2b).
Pupae are a shiny red-brown and about an inch long. They can be found just under the soil surface as the last instar (6th) larvae burrow underneath the surface to form a cell and pupate (Figure 3).
Adults are [relatively] heavy bodied moths with a wingspan of about 1.5 inches. Moths are characterized with brownish forewings each with a small white spot in the center. Hind wings are mostly light tan to gray in color.
What is their life cycle? Armyworms are not expected to survive harsh winters of the northern states. Adult moths migrate from southern states and arrive sometime in spring (late April-May). Females lay hundreds of small white-ish eggs in clusters on lower leaves of grasses; eggs would hatch within a week or two. Larvae continue to feed on plant tissue for 3-4 weeks. The last instar larvae inflict the greatest damage. They are mostly active during the night and hide in plant debris and soil cracks during the day. We recommend scouting fields starting in late May, at least every two weeks, until harvest (also see ‘how to control’).
Infestations may start in natural grassy vegetation outside fields and/or nearby pastures, where they later move into crops such as corn and small grains (e.gs. wheat, barley, oat, etc.). Damage is primarily through defoliation but in small grains larvae also feed on flag leaves, flowers, and kernels. True armyworms have a strong preference to feed on grasses. However, if starved, they may start consuming hosts such as legumes (alfalfa, beans, etc.) and several other vegetables.
There can be more than one generation in a growing season; the number of generations depends on the environmental conditions. One generation can be completed in about 6-8 weeks, if environmental conditions are suitable.
How to control? Natural enemies often keep numbers low, and thus, outbreaks of armyworms are not common. Armyworms are preyed upon by predatory beetles and are also susceptible to parasitoids and pathogens. Therefore, high densities of armyworm populations are likely to crash on their own. On occasions, however, insecticidal treatments may be needed.
As larvae are exposed while feeding, foliar insecticides can be effective. The presence of 5 worms (and more) per square foot in a small-grain field at planting or early developmental stages requires treatment. Spraying very early in the morning is the most effective since larvae are active in dark and hide during the day. Since infestations are likely to be patchy, insecticide applications could be limited to specific area(s) within a field. In such case, make sure to also cover a good 40 feet-wide border to prevent armyworms from crawling into adjacent non-infested areas and fields.
Armyworms are relatively easy to control chemically, if pesticides are applied in the right time frame of their developmental stages. Most of the time, when the damage is spotted, it is already too late. This is because feeding by the large last-instar larva causes the most significant damage; at this point insecticidal applications would not be economically justified. Thus, effective monitoring is key to a targeted, timely, and subsequently, successful control.
Scout field margins frequently (every two weeks) for larvae presence and signs of defoliation. Disturbing the soil surface would also help to find pupae and larvae. Moth populations can be monitored with light and/or pheromone traps.
As with several other pests and pathogens, controlling grassy weeds and volunteers within and around field edges would help to eliminate food sources post-harvest. In addition, tillage would help to reduce armyworm populations prior to planting winter crops.
At this time of the year, in southeast Idaho, damaged volunteers could be used to spot the presence of high armyworm populations. If leaf damage is observed, search leaf debris and soil for curled up larvae; tillage in combination with sub-freezing winter temperatures are expected to dramatically reduce the remaining larvae and pupae.
For Additional Information See
Armyworm outbreak in Northern New York, Cornell University
Armyworm (Pseudaletia unipunctata Haworth), Insect Fact Sheet, University of Illinois
Armyworms and their control in the field, University of Missouri
Armyworm, University of Florida
» Figure 1
» Figure 2
» Figure 3
potato psyllid & ZC update
Potato All Locations
potato psyllids and ZC
Posted on: September 27, 2013 by Erik Wenninger
Nearly all of the fields in the U-Idaho potato psyllid monitoring program have undergone vine kill. Of the sites still being monitored, psyllid numbers are for the most part similar to counts from recent weeks. On a few sites we recorded psyllids for the first time this year. We are still waiting on some Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC. A few vine-killed / harvested sites in the Magic and Treasure Valleys that tended to have had the most psyllids will continue to be monitored for a few more weeks. In addition, suspected overwintering sites will be monitored during the off-season.
Detailed monitoring results can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Stripe rust in winter wheat in Montana
Small Grains All Locations
Stripe rust
Posted on: September 27, 2013 by Juliet Marshall
Please take note that stripe rust in winter wheat was confirmed in Montana by Mary Burrows, Montana State University extension pathologist. This does not mean that we have it in Idaho; however anyone growing Brundage soft white winter wheat should scout for signs and symptoms! Please contact Juliet Marshall (jmarshall@uidaho.edu) if you suspect stripe rust in susceptible varieties. Check Brundage and Moreland first, but keep an eye out no matter what varieties you have.
There is a lot of green bridge material out there! So watch for insects (especially aphids) and diseases.
potato psyllid & ZC update
Potato All Locations
potato psyllids and ZC
Posted on: September 21, 2013 by Erik Wenninger
More fields have been vine killed this week, but potato psyllid captures remain at similar levels relative to recent weeks. We are still waiting on some Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC. A previously reported psyllid in Power County from August 28 has tested negative for Lso, but one new psyllid was captured last week in Power County and remains to be tested. As stated last week, we will stop monitoring most individual fields as they undergo vine kill; however, we will continue sticky card trapping on some fields for a few weeks after vine kill in order to get a better understanding of late-season and post-season psyllid activity.
Detailed monitoring results can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
potato psyllid and ZC update - nymphs found in Twin Falls Co
Potato All Locations
potato psyllids and ZC
Posted on: September 13, 2013 by Erik Wenninger
Potato psyllid captures remain at similar levels relative to recent weeks. All trap data that we have received up to this point are up to date and can be viewed at the link below. For the first time this year within our monitoring program, we have found psyllid nymphs on foliage in a commercial potato field (two nymphs across 100 leaves sampled from a field in Twin Falls County). We are still waiting on some Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC. We will stop monitoring most individual fields as they undergo vine kill; however, we will continue sticky card trapping on some fields for a few weeks after vine kill in order to get a better understanding of late-season and post-season psyllid activity.
Detailed monitoring results can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Planting Tips for Winter Cereals - BYDV
Small Grains All Locations
BYDV and aphids
Posted on: September 12, 2013 by Juliet Marshall
Planting winter cereals in Idaho– protecting your investment.
University of Idaho. Pest alert, September 12, 2013.
Dr. Juliet M. Marshall, Cereal Agronomy and Pathology
Dr. Arash Rashed, Entomology
Over the past several years our winter cereal production, in Idaho, has been negatively impacted with various arthropod pests and disease, including Barley Yellow Dwarf Virus (BYDV).
Below, are a few suggestions made to improve the overall health of our winter crops and to reduce the risk of significant yield loss due to disease problems:
Control volunteers and eliminate “green bridges”. Volunteer wheat and barley, as well as wild grasses, can host various pests of small grains, which may later invade your newly emerged winter crop. Break the green bridge by removing volunteers and having at least two weeks where there is no available host material. Corn is also a host for some insects and diseases that will affect cereals. For instance, aphids can transmit BYD virus from corn, which can harbor the virus but not be affected by it. Some evidence suggests that insecticide sprays in corn and in grassy borders would be effective in reducing BYDV incidence.
Small grains and other grasses (including grassy weeds) are known to host various cereal aphids (i.e. bird cherry-oat aphid, corn leaf aphid, and English grain aphid), and in the case of BYDV, the virus itself. Thus, crops like beets and alfalfa are not expected to act as a source of BYDV. If BYD virus was in your barley planted near beets last year, you likely had volunteers and grassy field borders as the source of infection. Fields could also be infected by newly arriving virus-carrying aphids.
Use treated seed. Insecticidal seed treatments can reduce aphid colonization of the crop, and subsequently, the secondary spread of BYDV. However, you may still get some virus transmission until the aphids ingest lethal levels of insecticides. Insecticides will also reduce the impact of wireworm feeding. Fungicides are also important for reducing soil and seed-borne diseases and early infection of seedling diseases.
Use resistant varieties. The most effective means to reduce diseases (stripe rust, for example) is to select varieties with resistance. For some diseases, such as BYDV, we don’t have wheat varieties with known levels of resistance to recommend at this point.
Planting date. Follow recommended planting dates for winter wheat and barley, and avoid early planting to minimize the exposure of emerging plants and young seedlings to virus-carrying aphids and other pests.
Seeding depth. In our dryland areas, we have had enough rainfall to replenish soil moisture in the seeding zone. With adequate moisture for rapid germination, you should not be planting deep – this year plant shallow – 1 to 1.5 inches will promote rapid emergence, good stand establishment and will help plants to withstand soilborne diseases such as Fusarium dryland crown rot. Deep planting will force the seed to expend more energy getting to the soil surface, weakening the seedling. It will also increase the chances of crusting prior to emergence. Under irrigation, the same practices apply – with adequate moisture, never plant deeper than 1.5 inches.
Seeding rate should be calculated based on seeds per acre, not lbs/A. Seed irrigated crops at 1 to 1.2 million seeds per acre when planting in our recommended planting window, as winter cereals will tiller adequately. Obviously, if you have to seed later following potatoes or sugar beets, there is less time for plant development and you should increase your seeding rate. If you have a very rough seed bed, increasing the seeding rate will also improve uniform plant stands. Under dryland conditions, reduce the seeding rate significantly, to 600,000 seeds/A for winter barley and 700,000 seeds/A for winter wheat.
Feed the seed. Use phosphorus to promote good root development. Starter fertilizers go a long way to promoting healthy crops, even when soil tests indicate adequate phosphorus levels. At high soil pH, phosphorus becomes unavailable, so even 10-15 lbs in furrow or below the seed can make considerable differences in root development and plant health.
Feed the plant. Soil test to determine available nutrients. Fertilize for expected yield. Consider adding 10-20 lbs/A KCl for straw strength and disease reduction. Sulfur is very important for end-use quality, and 20-40 lbs of sulfate per acre is strongly recommended for protein quality of hard red and hard white winter wheat.
Scout for problems. Monitor crops as they are growing for symptoms of nutrient deficiencies, weed infestations, insect problems, and disease incidence, and treat according to recommendations. The faster your remedy yield-robbing maladies, the greater your yield potential.
As a general rule, agronomic and cultural methods must be practiced, not only to reduce immediate risk, but also to help to achieve a sustainable pest management in the long run.
Idaho Association of Plant Protection Annual Meeting
All Crops All Locations
Posted on: September 11, 2013 by Jeff Miller
The Idaho Association of Plant Protection is holding its annual meeting November 5-6 at the Sawtooth Best Western Inn in Jerome. Please see the attached memorandum for more information. Please feel free to share this invitation with anyone who may be interested.
Those interesting in presenting can fill in the attached form and return it to either Jeff Miller (jeff@millerresearch.com) or Oliver Neher (o.t.neher@gmail.com). Please contact either Jeff or Oliver if you have any additional questions.
potato psyllid & ZC update
Potato All Locations
potato psyllids and ZC
Posted on: September 7, 2013 by Erik Wenninger
Across the U-Idaho monitoring program, psyllid captures this week generally have remained at similar levels (relative to recent weeks) or in some cases slightly higher levels. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. We are still waiting on Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC.
Detailed monitoring results (which will be updated as results continue to come in) can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
2014 Idaho Potato Conference
Potato All Locations
Posted on: September 5, 2013 by Nora Olsen
We are requesting suggested topics for the 2014 Idaho Potato Conference that will take place in Pocatello, ID on January 22nd and 23rd.
Please provide your ideas for potential workshops and presentations for this year's conference to Phil Nolte (pnolte@uidaho.edu) and Nora Olsen (norao@uidaho.edu) by October 7th.
Additional details regarding the conference can be found at http://web.cals.uidaho.edu/potatoconference/.
unusable pesticide disposal pickup
Announcements All Locations
Posted on: September 5, 2013 by Jerry Neufeld
Victor Mason at the Idaho State Department of Agriculture is announcing the fall 2013 schedule for the statewide pesticide disposal program. Click on the pdf below to find a location near you.
First zebra chip positive plant in Idaho this year
Potato All Locations
potato psyllids and ZC
Posted on: August 30, 2013 by Erik Wenninger
Last week we reported finding a plant at the Kimberly R&E center that exhibited classic zebra chip symptoms. A tuber sample from this plant tested positive for Lso, the zebra chip pathogen. This represents the first confirmed case of a zebra chip positive plant in Idaho this year. The potato was infected with type B Lso; all previous samples from Idaho were type A. There are two geographically based biotypes of Lso that infect potato (A and B); differences between the biotypes in relation to biology and management remain to be fully clarified.
We continue to catch psyllids on sticky traps across the U-Idaho monitoring program. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. Psyllid numbers are on the rise on some fields, notably in Canyon County.
More potato psyllids have tested positive for Lso. Lso-positive psyllids were found during the week of August 12 in the following counties: Canyon, Ada, Twin Falls, and Minidoka. Thus far, no Lso-positive psyllids have been found in eastern Idaho, though an additional psyllid was found this week in Power County that remains to be tested.
Detailed monitoring results (which will be updated as results continue to come in) can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Induced Resistance as a Component of Potato Disease Manageme
All Crops All Locations
Field day
Posted on: August 26, 2013 by Nora Olsen
Induced Resistance as a Component of Potato Disease Management, Plus an Update on Potato Psyllid/Zebra Chip in Idaho
Wednesday, September 4
University of Idaho Aberdeen R&E Center
Tour starts at 10 am (optional afternoon tour of additional trials)
Free lunch provided by Certis
RSVP by Monday, September 2 with jmiller@pesticide.org or 208-850-6504
A September 4 field day will feature the use of induced resistance as part of an IPM program for disease management in potatoes. The University of Idaho, Certis and the Northwest Center for Alternatives to Pesticides invite growers and crop consultants to attend a tour of trials at the University of Idaho Aberdeen Research & Extension Center.
The field day will feature trials of Bacillus mycoides isolate J (BmJ), a naturally occurring soil bacterium. It was discovered in sugar beets, where it induced the defense response system without causing disease. Since then, BmJ has been shown to induce disease resistance in a variety of crops.
Phill Wharton, University of Idaho plant pathologist, will provide a tour of his potato disease trials. Additional University of Idaho researchers will discus their trials of BmJ for managing Potato Virus Y, as well as provide the latest update on potato psyllid and zebra chip in Idaho.
The tour starts at 10 am. A free lunch will be provided by Certis. RSVP by Monday, September 2 with jmiller@pesticide.org or 208-850-6504. The Aberdeen R&E Center is located at 1693 S 2700 W in Aberdeen, Idaho.
Following lunch, Phill Wharton will offer an optional tour of his additional potato disease field trials.
This field day features work supported by the Idaho State Department Agriculture (2010 Specialty Crop Block Grant) and the Natural Resources Conservation Service, U.S. Department of Agriculture (under number 68-0211-10-030).
Late blight
Potato All Locations
Late blight
Posted on: August 23, 2013 by Jeff Miller
Late blight has been positively confirmed in central Bingham County. So far the disease has only been identified in one field. All growers should scout fields (especially areas which remain wet relatively long). Please submit any suspicious samples to the University of Idaho or Miller Research for positive identification.
The web address below links to an article on fungicides for managing potato late blight. Additionally, the attachment below links to a file discussing many aspects of the late blight disease cycle and additional management options.
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: August 23, 2013 by Erik Wenninger
Today, August 23, at least one plant was observed at the Kimberly Research and Extension Center displaying classic zebra chip foliar and tuber symptoms. Samples are currently being tested for the presence of the Lso bacterium that causes zebra chip. Refer to http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/ for additional information on potato psyllids scouting efforts and zebra chip symptom identification.
Potato psyllid numbers on sticky traps continue to rise across the U-Idaho monitoring program. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. We are still waiting on Lso test results from last week. Detailed monitoring results and management recommendations can always be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
various sugarbeet pests
Sugarbeets All Locations
several insect and disease pests
Posted on: August 20, 2013 by Jerry Neufeld
The Amalgamated Sugar Company Field Consultants are reporting that black bean aphids are widespread in sugarbeet fields in the Eden and Hazleton, Idaho area. The infestation is moderate to very high, depending on the location. They appear to be moving from the east end of the Twin Falls district to the west. In addition, two spotted spider mites are widespread throughout the Treasure Valley and the Twin Falls sugarbeet growing areas.
Cercospera Leaf Spot has also been found in sugarbeet fields in the Wendell area. This disease does not show up very often and is very localized. Powdery mildew has also been found in the Twin Falls area.
Make sure to scout your fields to assess the level of infestation you may, or may not have with these pests. TASCO stresses you should contact your TASCO Field Consultant for treatment recommendations, or if you have any questions.
various sugarbeet pests
All Crops All Locations
several insect and disease pests
Posted on: August 20, 2013 by Jerry Neufeld
The Amalgamated Sugar Company Field Consultants are reporting that black bean aphids are widespread in sugarbeet fields in the Eden and Hazleton, Idaho area. The infestation is moderate to very high, depending on the location. They appear to be moving from the east end of the Twin Falls district to the west.
In addition, two spotted spider mites are widespread throughout the Treasure Valley and the Twin Falls sugarbeet growing areas. TASCO is recommending Lannate and Lorsban as the chemicals of choice to treat these insects. The pre-harvest interval may be an issue to deal with, depending on when you make the treatment. Make sure to read and follow the label instructions.
Cercospera Leaf Spot has also been found in sugarbeet fields in the Wendell area. This disease does not show up very often and is very localized. TASCO is recommending lengthening the interval between irrigations and either Headline or Inspire XT for the fungicide treatment. Powdery mildew has also been found in the Twin Falls area.
Make sure to scout your fields to assess the level of infestation you may, or may not have with these pests. TASCO stresses you should contact your TASCO Field Consultant if you have any questions.
Composting Field Day September 10
Tree Fruits All Locations
Posted on: August 19, 2013 by Tony McCammon
This is a FREE workshop! Join us at Rocky Fence Vineyard at 3770 Fuller Rd., Emmett, ID 83617 for a field day demonstrating three different composting techniques applicable to producers of different sizes, how adding carbon sources affect dairy compost quality, how to reduce air emissions from grape, wine, and dairy production, and how to implement composting on your farm.
Topics to be covered during the field day
•Overview of mechanically turned, forced aerated, and passive aerated windrows composting systems.
•Challenges for handling vine prunings and other carbon rich materials and nitrogen rich manures.
•What to do if the compost process doesn’t work as intended. Can I still use it?
•Preliminary results from a University of Idaho Extension year-long study on composting grape vine prunings and dairy manure.
•Field day features work supported by an Idaho Natural Resources Conservation Service, U.S. Department of Agriculture, CIG grant
Parma Idaho Fruit Field Day 2013
Tree Fruits All Locations
Posted on: August 19, 2013 by Tony McCammon
The University of Idaho Annual Fruit Field Day will be held on Friday September 6, 2013 8:30 am to 1:00 pm at the U of I Parma Research and Extension Center Pomology Orchard and Vineyard site, about 4 miles north of Parma, Idaho. The registration will start at 8:30 am and program will start at 9:00 am (sharp). Several cultivars of new table grapes, peaches, nectarines, apples, plums, quince, Asian pears, and other alternative fruits will be presented during the tour. Participants can taste many of these fruits. Highlights
Potato Progress
Announcements All Locations
Posted on: August 19, 2013 by Jerry Neufeld
Attached please find Volume XIII, Number 8.
In view of the recent finds of late blight in the Columbia Basin, Dennis Johnson (Professor of Plant Pathology at WSU) has offered the enclosed article on late blight management. This article is up-to-date and broadly applicable to irrigated potato production. You will also find in this issue some important announcements.
Andy Jensen, Ph.D.
Regional Research Director
For: Potato Commissions of Idaho, Oregon, & Washington
4032 N Ballantyne Ln.
Eagle, ID 83616
Home Office: 208-939-9965
Cell: 509-760-4859
Web: www.nwpotatoresearch.com
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 16, 2013 by Erik Wenninger
Potato psyllids were trapped for the first time in eastern Idaho this week, one each in Power and Bingham counties. Psyllids were also trapped for the first time in Minidoka county. Incidence still remains low (less than 2%), as only six psyllids have tested positive for Lso out of the 300 trapped in our monitoring network throughout southern Idaho. To date, psyllids have now been trapped in Owyhee, Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls, Cassia, Minidoka, Power, and Bingham counties. All psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip disease.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Click on the link(s) below for more information about this pest:
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 9, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Owyhee, Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls, and Cassia Counties. Over 200 psyllids have been collected in our monitoring network so far this summer, and only six have tested positive for Lso, the bacterium that causes zebra chip disease. Those six Lso positive psyllids were trapped in Canyon, Jerome, and Twin Falls counties. This is relatively low incidence (less than 3%) compared to last year. All psyllids trapped last week tested negative for Lso.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Pesticide Disposal Program
Announcements All Locations
Posted on: August 7, 2013 by Jerry Neufeld
Click on the pdf below for information about the Idaho State Department of Agriculture’s Pesticide Disposal Program at various locations across Idaho starting in September.
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 2, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls and Cassia Counties. Results from last week show three more positives for Lso, the bacterium that causes zebra chip, but incidence of Lso remains low (less than 5%).
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Click on the link(s) below for more information about this pest:
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
2013 Miller Research Pest Management Field Day
Potato All Locations
Posted on: August 2, 2013 by Jeff Miller
Miller Research will be holding a pest management field day on Wednesday, August 14 at the Miller Research facility located near Acequia, ID (426 E 200 N). A short presentation will be given in the office followed by a tour of the research plots.
The presentations will focus on cultural and chemical management of diseases. We will discuss strengths and weaknesses of different management approaches. We have been awarded 2 ISDA pesticide recertification credits and 2.5 CCA (Pest Management) credits for this meeting.
Lunch will be served. Please RSVP so that we can plan for the appropriate number of people. Additional information along with a detailed agenda can be found at the link below. There is no cost to attend.
» http://www.millerresearch.com/alerts/research-news/item/43-mr-pest-management-field-day
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 26, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Canyon, Ada, Elmore, Gooding, Jerome, and Twin Falls Counties. In addition, we trapped our first potato psyllids this week in Owyhee and Minidoka Counties. In addition to the counties listed above, in a previous week we had also captured a psyllid in Cassia County. All the psyllids tested from last week were negative for Lso, the bacterium that causes zebra chip. So far, over 100 potato psyllids have been collected this year in U-Idaho monitoring programs; of the 64 psyllids tested so far, only 3 have been positive for Lso (less than 5% incidence). In contrast, by this time last year roughly 50% of the psyllids collected were positive for Lso. It is important to note, however, that despite finding only a handful of Lso+ psyllids in the Columbian basin last year, zebra chip was still found.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Bellevue Organic Farm Offers Tour
Announcements All Locations
Bellevue Organic Farm Offers Tour
Posted on: July 23, 2013 by Nora Olsen
Bellevue Organic Farm Offers Tour
Bellevue – Wood River Organics will host a field day and tour for produce growers and others interested in learning more about the process of organic farming.
Judd McMahan of Wood River Organics grows a variety of salad greens, as well as carrots, beets, tomatoes and cucumbers.
On July 31, McMahan will provide a tour of his greens and vegetable production, organic pest and weed management, cover cropping, specialized equipment for greens production, and his wash station and pack shed.
The tour is co-hosted by the Northwest Center for Alternatives to Pesticides and is being offered as a follow-up to the winter workshop Direct Marketing & Wholesale Success: Post-harvest Handling & Food Safety for Fresh Produce Growers. Attening farms will receive a complimentary 312-page color manual, Wholesale Success: A Farmers Guide to Food Safety, Postharvest Handling, Packing and Selling Produce, produced by FamilyFarmed.org, which is valued at $70 (while supplies last).
The tour is $15 and includes lunch. Check-in is at 9 a.m.
Register by July 26 online at www.pesticide.org or with Jen Miller, jmiller@pesticide.org or 208-850-6504. There is a $5 additional fee for late registration. The farm is located at 26 Townsend Gulch Rd in Bellevue. A map and driving directions are available at www.pesticide.org.
Stemphylium blight in Lentils
All Crops All Locations
Stemphylium blight of lentil
Posted on: July 22, 2013 by Ronda Hirnyck / Todd Scholz, USA Pea and Lentil Council
The Pulse Pipeline posted a Disease Alert about Stemphylium blight of lentil last week. It was based on observations of July 8.
On July 16, Stemphylium was observed in a lentil field planted to 'Morena' south of Garfield, WA. 'Morena' is considered highly susceptible to Stemphylium by researchers from MT and ND.
Many leaflets under the lush canopy were blighted already, and turned black (please see the attached photo) indicating production of spores which can easily spread the disease. The Stemphylium blight will defoliate the leaves.
USDA-ARS in Pullman, WA is recommending an application with Headline fungicide (6 to 9 fl oz/A) if growers of 'Morena' see the blighted leaflets under the canopy. It is known that the spray will not get under the canopy, but it will protect the leaves on top of the canopy.
Only limited data are available on fungicide applications for Stemphylium control.
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 19, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Ada, Canyon, Elmore, and Twin Falls counties. The number of psyllids collected per trap and per field remains relatively low; however, they are in line with trap counts from this time last year. It remains to be seen whether a similar increase will be observed this year, but last year’s sticky trap captures increased dramatically through August and September.
We are still waiting on results from Lso testing from psyllids collected during this and last week. Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Lso-positive potato psyllids found in Canyon and Twin Falls
Potato All Locations
potato psyllids and ZC
Posted on: July 16, 2013 by Erik Wenninger
For the first time this year we have found potato psyllids in Idaho that have tested positive for Lso, the bacterium that causes zebra chip. A total of three individual psyllids tested positive from early July: one in each of two fields in Canyon County and one collected at the Kimberly R&E Center.
Detailed monitoring results and management recommendations can always be found at the link provided below:
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
U-Idaho potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 12, 2013 by Erik Wenninger
Potato psyllids were trapped this week on sticky cards in Canyon, Ada, Elmore, Twin Falls, and Cassia Counties. This was our first potato psyllid captured this year in Cassia County. So far no psyllids tested to date have been positive for the bacterium that causes ZC. We are still waiting on results from psyllids collected during this and last week. For detailed monitoring results and management recommendations, you can always use the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
potato tuberworm moths
Potato All Locations
potato tuberworm moths
Posted on: July 12, 2013 by Erik Wenninger
Potato tuberworm moths have been captured in pheromone traps in Malheur Co (Stuart Reitz, Malheur Co. Cooperative Extension). Feeding by tuberworm larvae may cause extensive damage to tubers in the field and in storage. Thus far, we are unaware of current tuberworm infestations in Idaho; however, Mike Cooper, ISDA, in cooperation with Bill Buhrig, Jim Barbour, and Erik Wenninger, University of Idaho, will be deploying some pheromone traps in Idaho to monitor for moths. We encourage growers and crop consultants, especially those in western Idaho, to be aware of this pest. For more information on tuberworm moths, consult the following references:
http://www.agri.idaho.gov/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php
http://www.cals.uidaho.edu/edComm/pdf/cis/cis1125.pdf
http://extension.oregonstate.edu/catalog/pdf/pnw/pnw594.pdf
bean aphids in sugar beet
Sugarbeets All Locations
bean aphids
Posted on: July 11, 2013 by Erik Wenninger
Black bean aphids have been observed in sugar beet fields at the U-Idaho Kimberly R & E Center. The bean aphid is a dark-bodied aphid, about 1/16-inch long; individuals may be winged or wingless. Aphids are most abundant on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field.
Aphids are attacked by a variety of predatory and parasitic insects, including lady beetles. If natural enemies are absent, consider an insecticide application if bean aphid colonies cover 20 to 40 percent of leaf surfaces.
For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook (http://pnwhandbooks.org/insect/agronomic/sugar-beet).
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 8, 2013 by Erik Wenninger
More potato psyllids have been found in the U-Idaho monitoring programs. Psyllids have been found thus far in Canyon, Ada, Elmore, Gooding, Jerome, and Twin Falls Counties. So far no psyllids tested to date have been positive for the bacterium that causes ZC. For detailed monitoring results, you can always use the links provided at:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Organic Farm Tours Offered in July
All Crops All Locations
Posted on: July 8, 2013 by Nora Olsen
Organic Farm Tours Offered in July
The Northwest Center for Alternatives to Pesticides invites produce growers and those interested in organic production to attend two farm tours in July.
The tours will focus on produce production, organic pest and weed management, wash facilities, and packing sheds at two organic farms in southern Idaho.
•Wednesday, July 17 – Purple Sage Farms, Middleton, ID
Tim and Mike Sommer of Purple Sage Farms focus on greenhouse production of herbs, greens and specialty produce.
•Wednesday, July 31 – Wood River Organics, Bellevue, ID
Judd McMahan of Wood River Organics grows a variety of lettuce and salad greens, as well as carrots, beets, tomatoes and cucumbers.
The tours are a follow-up to the Northwest Center for Alternatives to Pesticides’ winter workshop “Direct Marketing & WholeSale Success: Post-harvest Handling & Food Safety for Fresh Produce Growers.” Participating farms will receive a complimentary 312-page color manual, Wholesale Success: A Farmers Guide to Food Safety, Postharvest Handling, Packing and Selling Produce, produced by FamilyFarmed.org, which is valued at $70.
Each tour will run from 8:30 am to 12 pm and will conclude with lunch. The cost is $15 and pre-registration is required. Register online at www.pesticide.org or contact Jen Miller (jmiller@pesticide.org or 208-850-6504) by July 12 and July 26, respectively. More details at www.pesticide.org.
These tours are made possible by a grant from USDA Risk Management Agency and support from the following businesses: Brandtastic Soil, Café Mam, Clear Springs Foods, Organic Valley, We Rent Goats and Western Ag Research. This is an equal opportunity event.
update on UI potato psyllid monitoring
Potato All Locations
potato psyllids & zebra chip
Posted on: June 30, 2013 by Erik Wenninger
--Results to date of sticky card captures from the ca. 90 fields being monitored with 4 yellow sticky cards can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
--More potato psyllids have been found in Canyon and Elmore Counties, and 1 potato psyllid was found in Jerome County. All psyllids tested so far from previous weeks have been negative for Lso, the bacterium that causes zebra chip.
--Results to date of sampling from the 13 fields being monitored with yellow sticky cards, vacuum samples, and leaf samples can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdFRNeW5ReDI2bTNWM0FwYmsxSnB1aGc#gid=0
--More potato psyllids have been found in Canyon County, and 1 potato psyllid was found in Twin Falls County. All psyllids tested so far from the previous week have been negative for Lso, the bacterium that causes zebra chip.
--Any scouting programs underway for potato psyllids should be intensified, and IPM programs should be in place. Refer to the following site for guidance on scouting and IPM programs for potato psyllids: http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: June 28, 2013 by Jeff Miller
The 2013 Miller Research Potato Pest Management Field Day will be held August 14 beginning at 9:00 am at Miller Research in Rupert, ID (426 E 200 N). A brief presentation will be followed by the opportunity to tour the research trials and see the performance of various fungicide programs on early blight, white mold, Rhizoctonia and other potato diseases. We will be highlighting research that has been sponsored by the Idaho Potato Commission. We will conclude the tour around noon and lunch will be provided.
Please RSVP so that we can plan appropriately for the tour and for lunch. Contact Jeff Miller at 431-4420 or jeff@millerresearch.com.
potato psyllids found in Ada, Canyon, and Elmore Counties
Potato All Locations
potato psyllids and ZC
Posted on: June 21, 2013 by Erik Wenninger
--Results to date of sticky card captures from the ca. 90 fields being monitored with 4 yellow sticky cards can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
--1 potato psyllid was found in a field in Elmore County this week.
--Results to date of sampling from the 13 fields being monitored with yellow sticky cards, vacuum samples, and leaf samples can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdFRNeW5ReDI2bTNWM0FwYmsxSnB1aGc#gid=0
--1 potato psyllid was found in a field in Ada County and a total of 3 potato psyllids was found across two fields in Canyon County this week.
--Any scouting programs underway for potato psyllids should be intensified, and IPM programs should be in place. Refer to the following site for guidance on scouting and IPM programs for potato psyllids: http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Field Days Next week! Dryland and Irrigated
Small Grains All Locations
Variety information and Numerous Pests
Posted on: June 20, 2013 by Juliet Marshall
Please join us for the latest information on diseases of small grains and variety information:
25 Jun Rockland: UI Wheat Breeding Program,
9:30 AM Arbon Valley: UI Wheat Breeding Program, 1:30 pm
WHERE: Meet at UI Breeding plots in Rockland and Arbon
WHEN: 9:30 AM in Rockland, 1:30 PM in Arbon
CONTACTS: Reed Findlay, (208-226-7621), rfindlay@uidaho.edu; Jianli Chen, (208-397-4162), jchen@uidaho.edu
26 Jun Rupert: UI Cereals Extension Field Day
WHERE: 700 E. 600 N.
WHEN: registration at 9:30 AM. Lunch is provided.
CONTACTS: Joel Packham, (208-878-9461) jpackham@uidaho.edu; Juliet Marshall, (208-390-4859), juliet.marshall@uidaho.edu
27 Jun Aberdeen: UI Cereals Extension and Wheat Breeding Field Day
WHERE: Aberdeen R&E Center, 1693 S 2700 W, Aberdeen, ID
WHEN: Tour starts at 9:00 AM. Lunch provided.
CONTACTS: Juliet Marshall, (208-390-4859), juliet.marshall@uidaho.edu; Jianli Chen, (208-397-4162), jchen@uidaho.edu
Early blight found
Potato All Locations
Early Blight
Posted on: June 20, 2013 by Jeff Miller
A sample of early blight from Rangers being grown in the Hazelton area was found yesterday. Lesions were only observed on the lower, senescing leaves of the plant. This is early for this area. The most effective timing for fungicide application for early blight control is just before row closure.
A research report by Miller Research outlining the relative efficacy of different fungicide programs can be found at the link listed below.
One potato psyllid detected in Canyon County potato field
Potato All Locations
potato psyllids and ZC
Posted on: June 17, 2013 by Erik Wenninger
Among the approximately 90 fields are being monitored only with yellow sticky cards in cooperation with several crop consultants, one potato psyllid was found on a card in Canyon County last week. This psyllid will be tested for Lso, the bacterium that causes zebra chip.
Results to date of sticky card captures from the ca. 90 fields being monitored with yellow sticky cards can be found at the link below.
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
Weekly update summaries will be extended to stakeholders; however, to obtain the most up-to-date information on trap captures, this website can be checked at any time for periodic updates over the week.
A spreadsheet detailing results from the 13 fields being monitored using sticky cards, vacuum samples, and leaf samples will be posted soon. So far no psyllids have been detected from these sites.
More information and resources on potato psyllids and zebra chip can be found at the link below.
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
No potato psyllids detected in Idaho potatoes yet
Potato All Locations
potato psyllids and ZC
Posted on: June 14, 2013 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 13 that covers commercial potato fields throughout southern Idaho. The project is funded in part by ISDA and IPC. Thirteen fields are being monitored with 10 yellow sticky cards, vacuum samples, and leaf samples. Approximately 90 additional fields are being monitored with 4 yellow sticky cards. Thus far, no potato psyllids have been found in any samples from potato fields.
More information and resources on potato psyllids and zebra chip can be found at the link below.
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Cereal Disease Update
Small Grains All Locations
Stripe rust and other cereal diseases / insects
Posted on: June 14, 2013 by Juliet Marshall
Stripe rust continues to spread in Brundage and is showing up in other susceptible winter wheat varieties such as Garland hard red winter wheat. Given the current weather, the widespread nature of stripe rust in southern and eastern Idaho, and the forecast for the next week, stripe rust will start to show up in our spring wheat fields, especially the susceptible varieties.
Many winter wheat fields are past legal application of fungicides, based on growth stage and pre-harvest application (PHI) index. Please follow label directions. For fields still within the window of application, the most susceptible varieties (based on reaction to previous 2011 races) include:
Hard winter wheat:
susceptible - Deloris, DW, Boundary, Garland, Golden Spike, Moreland, Whetstone, Yellowstone, Weston, Promontory, Juniper.
Soft white winter:
susceptible - Brundage, AP Legacy, AP Badger, WB 470, Lambert, Goetze, WB528 ("slow rusting"), Agripro Legion and Salute.
This list is by no means totally inclusive. Many of the winter wheat fields, especially towards the Magic Valley and Burley areas, are past the application window (50% heading or 30 days PHI depending on fungicide used).
For the spring wheats, keep an eye on the most susceptible varieties, which include hard wheats WB 936, UI Winchester, Klasic, Snow Crest, Bullseye, Kelse, Jerome, Jefferson, Kronos (durum), WB-Idamax, and WB-Paloma. In the soft spring wheat varieties, keep an eye on Jubilee, Alpowa, Cataldo, Penawawa, and Nick. High-temperature, adult plant resistance (HTAP) should be kicking in with varieties such as Alturas and UI Pettit, but again, please scout and never assume the environmental conditions are sufficient to sustain any initiated HTAP.
Scout resistant varieties as well - never assume stripe rust won't change virulence patterns.
IN ADDITION TO stripe rust, other problems that are surfacing include Cereal Leaf beetle. Damage has been reportedly significant in the areas south and west of Blackfoot. A great reference for CLB is the University of Idaho's Current Information Series #994 (CIS994) found at http://www.cals.uidaho.edu/edComm/pdf/CIS/CIS0994.pdf This reference puts the economic threshold for insecticide application at 3 larvae per plant or 3 eggs per plant or both BEFORE boot, or after boot growth stage, 1 larvae per flag leaf. There are many pesticides listed for CLB control in the 2013 PNW Insect Management Handbook http://pnwhandbooks.org/insect/ .
Now is the time to consider preventative action for our spring grain for control of FHB. Spring grain is fast approaching heading, with some of our earliest varieties like Klasic hard white showing awns and ear emergence. ESPECIALLY if you have planted spring grains following corn, consider application of one of three effective fungicides: Prosaro, Caramba or Proline. Conditions are favorable for FHB infection, especially with these storms! For wheat, application should be at 50% flowering. For barley, application will be at early head emergence. Internet references for FHB in small grains include http://msuextension.org/publications/AgandNaturalResources/MT200806AG.pdf (Mary Burrows at Montana State) and http://www.ag.ndsu.edu/pubs/plantsci/smgrains/pp804.pdf (Marcia McMullen at NDSU).
Winter wheat and winter barley diseases that are showing up: Barley Yellow Dwarf Virus, Wheat Streak Mosaic Virus (dry land areas), Eyespot (straw breaker foot rot), environmental damage associated with freezing temperatures.
Spring diseases that have started to show up - so far, black chaff in wheat (Xanthomonas) is just beginning. CURRENT weather is CONDUCIVE for continued development of black chaff in wheat and bacterial blight in barley (both caused by Xanthomonas bacteria. NO fungicides will control Xanthomonas).
Also, damage from Cereal Cyst Nematode is occurring in the sandy soils around Rexburg and Sugar City.
No potato psyllids detected in Idaho potatoes so far
Potato All Locations
potato psyllids and ZC
Posted on: June 7, 2013 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 13 that covers commercial potato fields throughout southern Idaho. The project is funded in part by ISDA and IPC. Thirteen fields are being monitored with 10 yellow sticky cards, vacuum samples, and leaf samples. Approximately 90 additional fields are being monitored with 4 yellow sticky cards; scouting efforts in some fields (especially in eastern Idaho) are still being initiated. Thus far, no potato psyllids have been found in any samples from potato fields; however, this week one adult potato psyllid and numerous psyllid eggs were observed on bittersweet nightshade in Twin Falls. This is not surprising given the apparent ability of psyllids to overwinter in association with this alternative host plant. Next week we will provide access to an online spreadsheet that shows results of the potato field monitoring efforts and location of fields (by county).
More information and resources on potato psyllids and zebra chip can be found at the link below.
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Additional stripe rust reports
Small Grains All Locations
Stripe rust
Posted on: June 5, 2013 by Juliet Marshall
Additional reports of stripe rust in wheat are coming in from Aberdeen, American Falls and the Pocatello area. Chad Jackson (University of Idaho) reported stripe rust in Brundage in the border of research plots on the Research station. Brad Clayson and Ron Ellis report stripe rust on the Fort Hall reservation and near Pocatello and American Falls. Additional reports continue from the Magic Valley. Most reports are of stripe rust in Brundage. If you find stripe rust in other varieties, please let me know. Again, further information is available on our website.
Stripe Rust Update
Small Grains All Locations
Stripe Rust
Posted on: June 5, 2013 by Juliet Marshall
Stripe rust has been reported in Northern Idaho by Doug Finkelnburg in the soft white winter variety 'Brundage' on the University of Idaho's research farm in Moscow, ID. Stripe rust is also confirmed in southern Idaho from the Twin Falls / Filer areas (also in Brundage) and in Declo (also in Brundage). If you are growing a susceptible variety, please scout and spray with fungicides as needed. While visiting fields in the Twin Falls area, many fields (approximately 30%) of winter wheat and winter barley were infected with BYDV. Most of the fields of winter wheat were Stephens. What appeared to be a resistant reaction to stripe rust was visible on many of the flag leaves of Stephens. Please don't assume resistance with be maintained in varieties reported as resistant, as changes can and do occur in the race structure of the stripe rust fungi. Please check our website for additional information, pictures, and fungicide efficacy chart.
2ee label for Vydate in potatoes
Potato All Locations
potato psyllid
Posted on: May 29, 2013 by Jerry Neufeld
Attached is the new Vydate®C-LV 2ee label from Dupont for suppression of Zebra Chip disease in potatoes. Click on the pdf below to view the label.
Stripe rust alert
Small Grains All Locations
Stripe rust
Posted on: May 28, 2013 by Juliet Marshall
I have had the first report of stripe rust in Idaho this year in the Hazleton area on Brundage soft white winter wheat. It was first seen 22 May by the pilot for Red Baron, Clay Seamons, and reported to me by Jared Hobson. Clay sent pictures and yes it is stripe rust.
Please scout susceptible varieties!! I will be traveling through the area on Thursday for BYDV scouting and impact assessments, but will also make additional confirmation of stripe rust. If this is the case, I am not surprised given the flow of wind from the south west where stripe rust is consistently an issue in California. It could have blown in from there. The current weather is favorable for infection and spread. winter wheat is heading and fungicides can be sprayed up to 50% flowering. I have a fungicide efficacy chart available at:
http://www.extension.uidaho.edu/scseidaho/
I would love to hear from you if you have additional suspected fields!
UI potato psyllid scouting program started
Potato All Locations
potato psyllids and ZC
Posted on: May 24, 2013 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state, has initiated a scouting program that covers commercial potato fields throughout southern Idaho. The project is funded in part by ISDA. The primary means of sampling psyllids will be by the use of yellow sticky cards, although vacuum samples and leaf samples are being taken from some fields as well. The first traps were deployed during the week of May 13; thus far, no potato psyllids have been found in any samples. Details of the monitoring program and results of monitoring efforts (by county) will be available soon.
Revision to Advisory
All Crops All Locations
Codling Moth, Fireblight, Cherry Mildew, and Leafroller
Posted on: May 16, 2013 by Tony McCammon
This is a revision from yesterday's Fruit Advisory. The Table on page two has been updated.
Pest Advisory
Tree Fruits All Locations
Codling Moth, Fireblight, Fruitworm, and aphids
Posted on: May 15, 2013 by Tony McCammon
Click on the link to view the advisory newsletter. In this issue, Timing for codling moth has started in all of Southern Idaho. Other pests to watch for are aphids, mites, thrips, and fire blight.
BYDV infection in wheat and barley
Small Grains All Locations
BYDV vectored by aphids
Posted on: May 9, 2013 by Juliet Marshall
PNW Pest Alert. Prepared by Juliet M. Marshall, May 9, 2013.
Widespread incidence of Barley Yellow Dwarf Virus (BYDV) – infected winter wheat and winter barley is evident throughout the Magic Valley from Buhl to Murtaugh. Symptoms include yellowing of leaves, stunting of plants both above and below ground (look for small root systems), and irregular heading with small heads in affected plants. Often, the most severe symptoms will occur along field edges and the edges created along the tracks of pivot tires. (Please see pictures.) There may also be a yellowing to a very characteristic reddening of leaves of infected weedy grasses in nearby ditch banks (Fig. 3), which also host the virus and aphids. Additional symptoms may also include notching of the leaf margins, twisting, leaf tip scorch, and abnormal development of emerging leaves.
Yield losses increase with earlier infections, and can approach 100% in severely affected fields, especially in early-infected winter barley. Fall infection occurred in 2012 as large populations of aphids migrating from other crops to newly emerged wheat or barley. Aphids are attracted to lush growth that occurs under irrigation, often leaving plants in dryland corners alone. Those plants emerging earlier or planted earlier were more likely to attract viruliferous aphids. A mild fall led to increases in aphid populations into December before a hard frost reduced their impact and subsequent transmission of virus.
The species of aphids that can carry the BYDV viruses are many, but the most common culprits include Bird cherry-oat aphids and English grain aphids. Greenbug and corn leaf aphids can also transmit the BYDV virus.
The virus strain identified by molecular techniques (by Dr. Alex Karasev, UI virologist in Moscow) was the PAV strain of BYDV, which is efficiently transmitted by the Bird cherry oat aphid (Ropalosiphum padi) and the English grain aphid (Schizaphis avenae). Aphids can pick up the BYDV virus from infected wild and cultivated grasses, volunteer cereals, and corn. The virus spreads only in conjunction with the movement of the aphid vector, and transmission is greater at low temperatures. The virus is not seed-borne.
At this point, reducing crop stress will reduce the effect of the virus on the plant, but yield losses will occur both through reduced grain production as well as reduced test weight. The most effective control is through the use of resistant varieties, but insecticidal seed treatments may reduce the initial spread in fall wheat and barley. Viruliferous aphids will still transmit the virus in the fall before the insecticides kill the aphid, but as the insecticides wear off over time, new invading aphids will continue to transmit virus.
Current aphid populations are very low, and spring wheat and barley should escape early infection. Reducing infection in the fall-planted grain includes adjusted (later) planting dates to avoid peak aphid activity, however, many of the currently infected fields were not planted early, but were simply actively growing during a long fall that had no killing frosts until well into December.
References:
Compendium of Wheat Diseases and Pests, 3rd Edition. APS Press. 2010.
Compendium of Barley Diseases, 2nd Edition. APS Press. 1997.
» Fig 1. BYDV infected winter barley near Murtaugh. May 2013.
» Figure 2. BYDV infected winter barley plants near a wheel track of a pivot line.
approaching sugar beet root maggot threshold in Rupert/Paul
Sugarbeets All Locations
sugar beet root maggot
Posted on: May 9, 2013 by Erik Wenninger
The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugar beet root maggot fly shows that—depending on your location in the Magic Valley—we have accumulated more than 200 degree days since March 1, 2010. Peak flight of root maggot flies should occur after 360 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Mini-Cassia area, this usually occurs around the 2nd of June, but with warm weather this year, peak flight in Rupert may occur by midweek next week.
Monitoring flies adjacent to your sugar beet fields using orange sticky stake traps will provide even more useful information regarding the local population densities of flies. The Amalgamated Sugar Company monitors flies with sticky stake traps throughout the Mini-Cassia area and posts the counts on their website: http://www.srcoop.com/ The economic threshold for application of granular insecticides against root maggots is an accumulative total of 40-50 sugar beet root maggot flies per sticky stake trap (the threshold varies depending on your contract price per ton). In the Mini-Cassia area, which historically has had high root maggot pressure, growers should consider an insecticide application 10 days before exceeding threshold captures on sticky stakes. Otherwise, insecticide applications should be made within 10 days before or after reaching the threshold (the closer to the threshold date, the better). Activation of granular insecticides should be accomplished by irrigation as soon after application as possible. See University of Idaho publication CIS 999, IPM Guide to Sugar Beet Root Maggot: http://www.uiweb.uidaho.edu/sugarbeet/insc/sbmaggot.htm
You can monitor degree day accumulation for sugar beet root maggots as follows:
1) Log onto: http://uspest.org/cgi-bin/ddmodel.pl?spp=srm
2) Select “Sugarbeet Root Maggot Bechinski et al. 1990” degree day model from the “Select degree day model….” drop down box at the top of the form
3) In the “Select location” box, select a location in the drop down box best describing your location (e.g. “RUPERT id agmet” in the “Washington, Idaho” box if you want information for a field near Rupert). Make sure to select “None” at the top of the lists in the other two location boxes.
4) Leave the “Or upload your own…” box blank
5) In the “Forecast:” area, enter your zip code or your city, state in the “NWS zipcode/city, state” box, or the location nearest your field from the “or weather.com site” drop down box to the right). This selection forecasts 7 days forward based on the local weather forecast (beyond 7 days the forecast is based on the historical average). The predicted date of peak fly flight will vary depending on the forecast location selected, so pick the one closest to your location. Select “none” to have the forecast based only on the historical average.
6) Select the location nearest your field in the “Select historical average forecast location” area. Your selection here should match, as close as possible, your selection in the “Select location” area above: there may not be an exact match. As above, select “none” in the other two boxes.
7) Make sure the “Table” and “graph” boxes are checked (and the “precipitation” if you want rainfall information) and click the “Calc” button. A table with the current degree day accumulations matching your selection should appear. There should also be a graph near the bottom showing the current year accumulation compared to the historical average for your selections.
U-Idaho 2013 potato psyllid and ZC recommendations
All Crops All Locations
potato psyllids and ZC
Posted on: May 7, 2013 by Erik Wenninger
Click on the link below to see the 2013 Idaho recommendations for potato psyllids and zebra chip, a brief summary of 2012 findings, and the monitoring plans for 2013.
Recommendations were a collaborative effort of Erik Wenninger, Nora Olsen, Phil Nolte, and Mike Thornton of the University of Idaho; Jeff Miller of Miller Research; Andy Jensen of the Idaho, Washington, and Oregon Potato Commissions.
Scab and Fireblight
Tree Fruits All Locations
Apple Scab and Fire Blight coming soon!
Posted on: May 6, 2013 by Tony McCammon
Apple scab infections also can occur when leaf wetness extends for as little as six hours in temperatures around 70 degrees. Southern Idaho has not had large outbreaks of scab over the past several years due to the reduction of overhead sprinkler use. If you have had a bad scab year in the past two or three years you might consider treating your trees this week and changing your irrigation system in the future.
Fire Blight infections occur when leaf wetness or high humidity accompany a temperature around 65 degrees or higher for a 24 hour period. The forecast of thunderstorms and moderate temperatures this coming weekend could prove dangerous for your trees. Forecasts rate the likelihood of infection as EXTREMELY HIGH. Have an antibiotic such as serenade or agri-mycin on hand. Homeowners can use blight ban or Mico-shield. If you do not choose to control fire blight at this time monitor very closely for new infections and prune them out. They usually show up within 7 to 14 days.
In both cases young trees are more susceptible than older trees. And young flowers are more susceptible than older flowers.
New potato information guides
Potato All Locations
Posted on: May 2, 2013 by Nora Olsen
The University of Idaho has recently published three potato related extension bulletins.
- 'Portable test kits for diagnosing potato disease' available at www.cals.uidaho.edu/edcomm/pdf/BUL/BUL0883.pdf
This bulletin highlights the use and accuracy of commercially available pathogen test kits for diagnosing disease in the field and storage. Multiple test kits for numerous diseases, such as PVY and Pythium, were used, assessed and compared to results from traditional diagnostic methods. Ease of test kit use and storage was also assessed and discussed. Overall, the test kits did a good job of accurately identifying the pathogen causing the problem, and in some cases, ruling out potential pathogens. They are relatively easy to use and can typically provide a result within 3 to 5 minutes. They are portable for use in the field, storage or office.
- 'Superficial growth on potatoes' available at www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1191.pdf
This bulletin outlines factors that may promote superficial growth of non-pathogenic fungi and bacteria that can grow on the surface of a potato. Management practices to reduce the potential for superficial growth are also discussed.
- 'Storage Management of Blazer Russet Potatoes' available at www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1192.pdf
This bulletin describes best storage management practices for 'Blazer Russet' released in 2005 by the USDA ARS and the agricultural experiment stations of Idaho, Oregon, and Washington. This is an early-maturing and high-yielding variety acceptable for fresh market or early season processing. This variety has acceptable fry color when stored at 48F and has a shorter dormancy length than Russet Burbank.
Fruit Advisory Newsletter - Issue 2
Tree Fruits All Locations
Posted on: April 30, 2013 by Tony McCammon
In this issue, I have updated the Degree days for South Western, Southern, and added Eastern Idaho. Between 5-8 percent of adults moths have emerged. Fire Blight infection is likely this week, Cherry mildew is a concern, and leafrollers are in their 4th instar. Shothole disease is also making its rounds again.
Please email me if you have any articles you would like researched or ideas to make this newsletter better and more usable. tonym@uidaho.edu www.hortmagic.org
Fruit Advisory newsletter - Issue 2
Small Fruits All Locations
Codling Moth, Fireblight, Cherry Mildew, and Leafroller
Posted on: April 30, 2013 by Tony McCammon
In this issue, I have updated the Degree days for South Western, Southern, and added Eastern Idaho. Between 5-8 percent of adults moths have emerged. Fire Blight infection is likely this week, Cherry mildew is a concern, and leafrollers are in their 4th instar. Shothole disease is also making its rounds again.
Please email me if you have any articles you would like researched or ideas to make this newsletter better and more usable. tonym@uidaho.edu www.hortmagic.org
potato psyllid identification and trapping workshops
All Crops All Locations
potato psyllid
Posted on: April 22, 2013 by Jerry Neufeld
Just want to remind everyone about the Potato Psyllid trapping and identification workshop from 1 to 3 pm today at the UI Parma R and E Center.
Potato Psyllid trapping and identification workshops will be held across Idaho in late May. There will be a workshop on May 28 at the UI Parma R and E Center, on May 29 at Miller Research in Rupert, and on May 30 at the UI Idaho Falls R and E Center. For more information, including times, click on the pdf below which will bring up the April 19, 2013 edition of the Potato Progress edited by Andrew Jensen.
Fruit Advisory
All Crops All Locations
Frost, Codling Moth, Fireblight
Posted on: April 16, 2013 by Tony McCammon
First issue of the year:
Frost protection and tables for determining frost damage
Degree Day Temperature notifications
Fertilizing Brambles and Grapes
Order your Intermountain Fruit Tree Guide
Codling Moth Biofix and trapping
Food Safety Modernization Act
Announcements All Locations
Posted on: March 13, 2013 by Jerry Neufeld
The Food Safety Modernization Act will significantly impact growers, packers and processors in the coming years. Members of the food industry have the opportunity to submit comments to FDA on the proposed rules that will be used to regulate the food industry in the coming years. There is a need to be familiar with the proposed rules in order to submit relevant comments to FDA by the May 16, 2013 deadline. A multi-state team involving universities and regulatory agencies in partnership with FDA is offering five opportunities to review the proposed rules. FDA will be presenting information and offering input throughout the workshop. The nearest work shop will be held at the Four Rivers Cultural Center in Ontario, Oregon on April 19, 2013. Click on the pdf below for more information.
Positive Zebra Chip Infected Potatoes in Power County
Potato All Locations
Zebra Chip
Posted on: March 12, 2013 by Nora Olsen
A recent submission of potato tuber samples grown in Power County were verified to be positive for Lso (Candidatus Liberibacter solanacearum), the bacterium causing zebra chip in potatoes. Symptoms of zebra chip include necrotic flecking in the flesh of the tuber, similar to net necrosis, but the symptoms extend throughout the length of the tuber. When diseased tuber tissues are fried, severe darkening in both chips and fries are seen. Because symptoms can be seen in uncooked tissues, the disease is a concern for both fresh and process potatoes. The number one means to control zebra chip is to control infected potato psyllids. Non-infected psyllids will not cause zebra chip.
Please visit the following websites for additional information.
cull onion disposal
Onion All Locations
onion maggot
Posted on: February 22, 2013 by Jerry Neufeld
The deadline for disposing of cull onions in Ada, Canyon, Gem, Payette, Owyhee and Washington Counties is March 15, 2013. Click on the pdfs below, from the Idaho State Department of Agriculture,for more information about disposal of cull onions
Southern and Eastern Idaho Cereal Schools
Small Grains All Locations
Posted on: January 30, 2013 by Juliet Marshall
Get the latest information on cereal varieties, disease, fertility at the southern and eastern Cereal Schools. Feb 5 at Burley Inn, 8:30 AM in Burley; Feb 6 at the Ramada Inn 8:30 AM in Pocatello; Feb 7 at the Ramada Inn 8:30 AM in Idaho Falls; Feb 7 at the Relay Station Restaurant at 8:30 AM in St. Anthony; and Feb 8 at the Robinson Building 8:30 AM in Preston, ID. Check the website for more information.
Post-harvest Handling and Food Safety Workshop
All Crops All Locations
Posted on: January 21, 2013 by Nora Olsen
Friday, Feb. 1: Workshop to Address Post-harvest Handling and Food Safety
Fresh produce growers are invited to attend a Friday, February 1 workshop in Caldwell on post-harvest handling, food safety, wholesale marketing, and profit planning. The workshop will address issues of interest due to FDA’s recent release of the proposed Food Safety Modernization Act rules.
The workshop is presented by the Northwest Center for Alternatives to Pesticides, University of Idaho Extension and Idaho State Department of Agriculture through the Idaho Preferred program.
The training will be provided by FamilyFarmed.org, which is conducting its Direct Marketing & Wholesale Success workshop in 15 states. Topics will include marketing and packing quality, post-harvest handling, writing a food safety plan and pack shed design. The workshop will conclude with a panel of retail and food service buyers from the Treasure Valley and a discussion of their local produce buying preferences and requirements.
Participating farms will receive a free manual, Wholesale Success: A Farmers Guide to Food Safety, Postharvest Handling, Packing and Selling Produce, valued at $70. The 312-page color publication is a leading resource on selling into wholesale markets. It includes topics including Calculating Return on Investment; Cleaning, Drying, and Curing Produce; Traceability; Packing Shed Design; and Maintaining the Cold Chain.
Workshop sessions on financial management tools and recordkeeping will also be offered concurrently on February 1.
Friday evening & Saturday, February 2: Fourth Annual Grower’s Own Conference
Following the workshop is the fourth annual Grower’s Own Conference, a farmer-to-farmer exchange and networking opportunity for farmers interested in organic production methods. The conference will be held Friday evening and Saturday, February 2.
This year’s guest farmer is Laura Masterson of 47th Avenue Farm, located near Portland. Masterson is a veteran of farmer-to-farmer exchanges in Oregon. She will speak about her extensive experience in organic vegetable production, season extension, year-round CSA production and marketing, employee and intern management, and microenterprise budgeting.
“This is a unique and highly valuable experience,” says Grower’s Own Conference co-organizer Beth Rasgorshek of Canyon Bounty Farm in Nampa. “It is also farmer driven, so now is the time to register and cast your vote for the topics to be discussed.”
Some of the topics under consideration include microenterprise selection; wash facilities, packing sheds & supply sources; vegetable start production; livestock feed rations & on-farm production; employee management; integrated pest management; high tunnels; irrigation systems, cooperative CSAs; meat marketing; starting a livestock operation; and alternative financing.
The workshop and conference will be held at the College of Idaho. The Feb 1 workshops cost $25, the Grower’s Own Conference costs $55, and both cost $70. Pre-registration is required. Agenda details and online registration at www.pesticide.org or contact Jennifer Miller at jmiller@pesticide.org or 208-850-6504.
Funding is provided in part by USDA RMA.
Contacts:
Ariel Agenbroad, 208-459-6003, University of Idaho Extension, Canyon County
Jennifer Miller, 208-850-6504, Northwest Center for Alternatives to Pesticides
Beth Rasgorshek, 208-463-1878, Canyon Bounty Farm
Soil copper levels and potatoes
Potato All Locations
Copper toxicity
Posted on: January 11, 2013 by Jeff Miller
A new research article has been published discussing the impact of copper in soils as a result of dairy lagoon water treatment and the effect this can have on potato production. The article can be found at www.nwpotatoresearch.com and is published in the December 26, 2012 issue of Potato Progress (Volume 12, #19).
Outback Steakhouse Gift Certificate Winners
Announcements All Locations
Posted on: December 18, 2012 by Jerry Neufeld
Thank you to everyone who filled out a pest alert survey for 2012. The winners of the Outback Steakhouse Gift Certificates are Wyatt Croft, Andrew Bell, and Jim Shoemaker. Certificates are going in the mail today.
Jerry Neufeld
University of Idaho Potato Conference
Potato All Locations
Posted on: December 17, 2012 by Nora Olsen
‘Education and Innovation’ is this year’s theme for the 45th annual University of Idaho Potato Conference and Eastern Idaho Ag Expo to be held January 22 to 24, 2013 in Pocatello, Idaho. The conference will have concurrent 1-hour sessions each day starting on Wednesday January 23rd at 8 am and ending January 24th at noon. Topics will vary and include all aspects of potato production and marketing. Zebra chip, bacterial ring rot and nematode management will be emphasized.
The conference will go back to its roots with basic potato and plant science education by offering a ‘Potato Science Course’ consisting of nine 1-hour sessions starting with Potato Crop Development and ending with Storage and Quality. You can attend one session to supplement your education on that particular topic, or all nine sessions for the complete course. These classes will be interactive and engaging for all participants, and will focus on the basic concepts needed to understand potato production.
Registration and a complete agenda are available at www.idahopotatoconference.com. Pre-register by January 11 for a reduced registration rate.
Miller Research Potato Pest Management
Announcements All Locations
Posted on: November 15, 2012 by Jeff Miller
Many people have reported trouble opening the attachment for the Miller Research meeting. A corrected file is attached to this post.
Miller Research Potato Pest Management
Announcements All Locations
Posted on: November 14, 2012 by Jeff Miller
Please see the attached flier with information on the annual Miller Research Potato Pest Management Seminar. We will have presentations on Zebra Chip, foliar and soil-borne disease management, along with a presentation on sanitation for bacterial ring rot control. Dr. Erik Wenninger and Dr. Nora Olsen from the University of Idaho will be giving presentations as part of the meeting. We will have two identical meetings: one in the morning and one in the afternoon. Please RSVP soon as we are limiting the number of attendees in each session.
Sugarbeet Conference
Announcements All Locations
Announcement
Posted on: November 13, 2012 by Jerry Neufeld
The Snake River Sugarbeet Conference is December 13, 2012 at the Best Western Burley Inn and Convention Center. Click on the pdf files below to see the agenda and registration form.
SARE project research survey
Tree Fruits All Locations
Posted on: September 26, 2012 by Tony McCammon
Corey Hanlon, a graduate student at the University of Florida. Is trying to conduct some research on how farmers perceive soil testing, through the use of a 10-minute, anonymous online survey. The sample of respondents that he is searching for includes any farmers that produce horticultural goods, including fruits, vegetables, nuts, nursery stock, sod, trees and more. If you are willing to help me reach my goal of 200 respondents, the survey can be accessed through the following link: http://www.surveymonkey.com/s/WYWF3YD Thank you for your help!
Organic Grape Production and Composting Featured at Upcoming
Small Fruits All Locations
Field Day
Posted on: September 25, 2012 by Nora Olsen
Organic Grape Production and Composting Featured at Upcoming Field Day
Thursday, September 27
1:30 - 4 pm
Rocky Fence Vineyard
Emmett, Idaho
Mike and Liz Medes of Rocky Fence Vineyard in Emmett, Idaho invite growers to attend.
The tour will feature organic methods of table and wine grape production, with a special emphasis on increasing berry size and managing powdery mildew. The vineyard has been producing organic grapes since 2004, during which the Medes have been involved in several research projects to enhance production practices.
Mario de Haro Marti, University of Idaho Gooding County Extension, will share his work with the vineyard to compost grape vine prunings. The vineyard wants to retain nutrients, reduce and potentially eliminate burning of the prunings, and control the spread of diseases and insects with proper composting techniques.
The Northwest Center for Alternatives to Pesticides is assisting the vineyard in offering this tour. More tour details at www.pesticide.org. RSVP with Jennifer Miller (jmiller@pesticide.org, 208-850-6504) or at www.pesticide.org. The cost is $10. A grape tasting and snacks will be provided.
The vineyard is located at 3770 Fuller Rd, Emmett, ID 83617.
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: September 24, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 21 Sep 2012
Potato psyllids continue to be trapped on yellow sticky cards across several sites being monitored by the University of Idaho in the Magic Valley. Of the remaining sites that have not undergone vine kill, numbers of adults were similar to or higher than during the previous three weeks. Nymphs and/or eggs were found at three sites in the Magic Valley; 44, 58, and 7 eggs per 100 leaf samples were found at sites 3, 4, and 5, respectively (see below), and 40, 23, and 0 nymphs per 100 leaf samples were found at sites 3, 4, and 5, respectively (see below). All but one site has now undergone vine kill. Only site 2 (in Jerome County) will be monitored next week. Reports of liberibacter incidence in samples will continue to be reported as the numbers come in. See the link below to view a table that details where (by county) and when potato psyllids and liberibacter have been found so far during this season in Idaho.
Tubers from the Kimberly R&E Center (site 7, below) were harvested today and will be evaluated for development of ZC symptoms over the storage season.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Idaho Association of Plant Protection
Announcements All Locations
Posted on: September 19, 2012 by Jerry Neufeld
Click on the pdf below for information about a call for papers for the Idaho Association of Plant Protection in Jerome, Idaho on November 7 and 8, 2012.
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: September 14, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 14 Sep 2012
Potato psyllids continue to be found on yellow sticky cards across several sites being monitored by the University of Idaho in the Magic Valley. For most sites, numbers of adults were similar to the previous two weeks. Nymphs continue to be found at two sites, and eggs were found on three sites; 1, 21, and 97 eggs were sampled from sites 2, 3, and 4, respectively, across 100 leaf samples at each site. Samples may be taken one more week on remaining Magic Valley sites before vine kill. No potato psyllids were found this week in the UI sampling network in western or eastern Idaho, and only one site (in Power County) will be sampled next week (vine kill has occurred on all other sites). A portion of the psyllids collected in previous weeks continues to test positive for liberibacter, the causal agent of ZC. See the link below to view a table that details where (by county) and when potato psyllids and liberibacter have been found so far during this season in Idaho.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: September 10, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 7 Sep 2012
Potato psyllids continue to be found on yellow sticky cards across several sites being monitored by the University of Idaho. Two sites (one in Twin Falls County and one in Jerome County) continue to show high numbers relative to other sites and to earlier weeks. Numbers are also up slightly at the Kimberly R&E Center. Nymphs were found in larger numbers this week, particular at the site in Gooding County. Eggs also were found in larger numbers this week: 33, 2, 22, and 35 eggs were found among each of the 100 leaf samples taken from sites 1, 2, 3, and 4, respectively.
No potato psyllids were found this week in the UI sampling network in western or eastern Idaho. A portion of the psyllids collected in previous weeks continues to test positive for liberibacter, the causal agent of ZC. See the link below to view a table that details where (by county) and when potato psyllids and liberibacter have been found so far during this season in Idaho.
Vine kill will occur soon on most fields in the Magic Valley, so sampling will continue for no more than 1-2 weeks for most sites.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: August 31, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 31 Aug 2012
Potato psyllids continue to be found on yellow sticky cards across several sites being monitored by the University of Idaho. Two sites (one in Twin Falls County and one in Jerome County) continue to show relatively high numbers compared to the previous week. For the first time this year, nymphs and eggs were found in UI-sampled fields (one nymph in each of two fields and six eggs in one of these fields). One potato psyllid was found in the UI sampling network in Canyon County this week (the second of the year; some psyllids had been found in this county by crop consultants over much of the summer). No potato psyllids have been found in eastern Idaho since the week of July 23. A portion of the psyllids collected in previous weeks continues to test positive for liberibacter, the causal agent of ZC. See the link below to view a table that details where (by county) and when potato psyllids and liberibacter have been found so far during this season in Idaho.
Continued scouting for psyllids and disease symptoms are strongly encouraged. Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
2013 Idaho Potato Conference Input
Potato All Locations
Posted on: August 28, 2012 by Nora Olsen
This the first call for topics for the 2013 Idaho Potato Conference that will take place in Pocatello, ID on January 23rd and 24th.
Please provide your ideas for potential workshops and presentations for this year's conference to Nora Olsen (norao@uidaho.edu) or Mike Thornton (miket@uidaho.edu) by September 26th so that we can put together a preliminary list for the program planning meeting.
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: August 24, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 24 Aug 2012
Potato psyllids continue to be found on yellow sticky cards across several sites being monitored by the University of Idaho. Across most sites, numbers are more or less similar to last week. Two sites (one in Twin Falls County and one in Jerome County) showed relatively high numbers compared to the previous week. For the first time this year, a potato psyllid was found in the UI sampling network in Canyon County (psyllids had previously been found in this county by crop consultants). No potato psyllids have been found in eastern Idaho since the week of July 23. Crop consultants submitted yellow sticky card samples this week with potato psyllids from several sites in Elmore County and one site in Twin Falls County. A portion of the psyllids collected in previous weeks continues to test positive for liberibacter, the causal agent of ZC. See below to view a table that details where (by county) and when potato psyllids have been found so far during this season in Idaho.
We continue to encourage vigorous scouting efforts. We suggest ground-rigging along edges of fields if possible to ensure adequate coverage of insecticides along field edges. Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: August 19, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 17 Aug 2012
Potato psyllids continue to be found across several sites being monitored by the University of Idaho. Numbers are similar to last week. Across the UI sites, psyllids have been found primarily in Magic Valley fields; however, crop consultants have submitted potato psyllid samples from Canyon and Elmore counties. Some of the psyllids found in previous weeks continue to test positive for liberibacter, the causal agent of ZC. The three psyllids that were found in Bonneville county all tested negative, though.
See below to view a table that details where (by county) and when potato psyllids have been found so far during this season in Idaho.
We continue to encourage vigorous scouting efforts. Refer to the sites below for guidance on scouting and IPM programs for potato psyllids and to view trap captures in Idaho so far over the season.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Miller Research Pest Managment Field Day
Potato All Locations
Posted on: August 13, 2012 by Jeff Miller
This is a reminder for the Miller Research Pest Management Field Day which will be held Wednesday of this week from 9:30 to noon (please see the attached flier for more details). We have received two ISDA pesticide recertification credits for the meeting. Thank you to everyone who has replied. If you are planning on attending, but have not replied, please let us know ASAP for planning purposes. There is no cost to attend.
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: August 10, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 9 Aug 2012
Potato psyllids continue to be found across several sites being monitored by the University of Idaho. Numbers are similar to last week. Psyllids this week were only found on sticky cards at sites in the Magic Valley. We still have yet to find immature potato psyllids on leaf samples taken from potato fields. Of the psyllids found in previous weeks, a portion was positive for liberibacter, the causal agent of ZC. See the U-Idaho site below to view a table that details where (by county) and when potato psyllids have been found so far during this season in Idaho.
Plants with ZC symptoms have been collected or reported from several locations, but we are awaiting confirmation with PCR results. Thus far, zebra chip in potato plants has been confirmed by PCR (molecular testing) at three locations in Twin Falls County (including the Kimberly R&E Center) and one location in Minidoka County.
We continue to encourage vigorous scouting efforts. Refer to the sites below for guidance on scouting and IPM programs (including insecticide recommendations) for potato psyllids.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Fusarium Head Blight in WHeat and Barley
Small Grains All Locations
Fusarium Head Blight
Posted on: August 8, 2012 by Juliet Marshall
Please be aware that there are increasing incidences and severity of Fusarium Head Blight (FHB also called head scab or scab) in this year’s harvested grain. This disease will cause shrinkage of kernels and sometimes the development of scabby or “tombstone” kernels, which are shrunken white kernels that are covered in fungi and spores.
To reduce grain contamination from the mycotoxins associated with this disease, it is important to increase the fan speeds on your combine in order to blow out the affected kernels. This may reduce the level of toxins detectable to more safe levels, below 5 ppm.
I have attached a picture of FHB in wheat that I took west of Idaho Falls. The disease increases in severity in areas where corn is grown and is worse where small grains directly follow corn in the rotation.
I HAVE SEEN IT IN BOTH WHEAT AND BARLEY in Idaho this year.
There may be a brown discoloration of the rachis (the stem portion of the head) seen after flowering that progresses to single florets that then die and become bleached in appearance. This will vary - there may be single florets affected, or one quarter, one third of the head to the entire head bleached and diseased. Partially or totally killed heads may still have green stems, unlike what you will find with take-all or Fusarium dryland foot rot where the entire stem will be bleached. A tell-tale characteristic of this disease is the formation of orange, or pinkish or salmon-colored spores structures that form at the base of the floret at the junction of the seed to the stem. These “sporodochia” may also form at the edges and overlapping joints of the chaff. You may have FHB even without the visible presence of these orange-colored sporodochia.
Please do not mix highly contaminated grain with clean grain – this may only increase the amount of contaminated grain that will be difficult to sell.
Juliet Marshall
Associate Professor, Cereals Pathology and Agronomy
Idaho Falls R&E Center
1776 Science Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
http://www.extension.uidaho.edu/scseidaho/
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: August 3, 2012 by Erik Wenninger
U-Idaho ZC and potato psyllid update – 3 Aug 2012
Potato psyllids continue to be found across several sites being monitored by the University of Idaho. Numbers are up considerably at two sites. Sixteen potato psyllids were trapped on yellow sticky cards this week at the Kimberly R&E Center (and two psyllids were collected by vacuum sampling), and 54 potato psyllids were trapped on a grower’s field in Twin Falls County. Eight psyllids were trapped on sticky cards in a field in Jerome County, and one was trapped in another field in Twin Falls County. We have yet to find immature potato psyllids on leaf samples taken from potato fields. See the U-Idaho site below to view a table that details where (by county) and when potato psyllids have been found so far during this season in Idaho.
Thus far, zebra chip in potato plants has been confirmed by PCR (molecular testing) at three locations in Twin Falls County (including the Kimberly R&E Center) and one location in Minidoka County. Plants with ZC symptoms have been collected or reported from other locations, but we are awaiting confirmation with PCR results.
We continue to encourage vigorous scouting efforts. Refer to the sites below for guidance on scouting and IPM programs (including insecticide recommendations) for potato psyllids.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: July 31, 2012 by Erik Wenninger
University of Idaho potato psyllid scouting update – 31 July 2012
Potato psyllid captures were down slightly for the week of 23 July. We are reporting the first detection of potato psyllids in Gooding and Bonneville Counties, and the first report of liberibacter-positive psyllids in Canyon and Minidoka Counties this year.
From the University of Idaho sampling network, we collected the following from sticky cards last week: 1 psyllid from one site in Gooding County; 2 psyllids from one site in Minidoka County; 3 psyllids from one site in Bonneville County; 8 psyllids from one site in Jerome County; 9 psyllids from one site in Twin Falls County; and 2 psyllids from the Kimberly R&E center (in Twin Falls County).
Crop consultants and growers submitted the following on yellow sticky cards: 6 psyllids from 3 different sites in Elmore County; 3 psyllids from 2 sites in Canyon County; and 1 psyllid from a non-commercial site in Payette County.
From sticky card samples that were collected during the week of 16 July, 3 of 7 psyllids tested positive for liberibacter from one Twin Falls County site; 3 of 4 psyllids tested positive from another Twin Falls County site; 3 of 8 psyllids tested positive from the Kimberly R&E Center, and 2 of 6 psyllids tested positive from one Jerome County site. The one psyllid collected from a vacuum sample at a Twin Falls County site tested positive. In addition, psyllids on sticky cards (bulk sampled by location) submitted by crop consultants from fields in Minidoka, Elmore, and Canyon Counties tested positive for liberibacter.
The following is a brief summary of potato psyllid findings on sticky cards to date in Idaho:
University of Idaho sampling network:
Twin Falls County (3 sites, including Kimberly R&E Center) – adult psyllids (some positive for liberibacter); zebra chip infected plants confirmed (2 sites, including Kimberly R&E Center)
Jerome County (2 sites) – adult psyllids (some positive for liberibacter at one site only)
Minidoka County – adult psyllids (some positive for liberibacter)
Bonneville County – adult psyllids (awaiting results from liberibacter test)
Gooding County – adult psyllids (awaiting results from liberibacter test)
Other counties where scouting is occurring but no psyllids have been found: Madison, Bingham (2 sites) and Canyon (4 sites)
Samples submitted by crop consultants or growers:
Elmore County – adult psyllids (some positive for liberibacter)
Canyon County – adult psyllids (some positive for liberibacter)
Minidoka County – adult psyllids (positive for liberibacter)
No colonization of psyllids has been detected in scouted fields; i.e., we have yet to find any nymphs in fields. All psyllids have been adults trapped on yellow sticky cards, with the exception of 2 sites in Twin Falls County that were collected with a vacuum sampler. First detection of liberibacter-infected potato psyllids was June 19 in Twin Falls County. Plants and tubers with zebra chip symptoms (confirmed by molecular tests) were first detected July 17 in Twin Falls County. Additional samples have been submitted since that date and are awaiting confirmation.
We encourage everyone to increase scouting efforts. Ensure adequate insecticide treatment of the perimeter of fields, which may be missed by aerial application; psyllids are known to colonize fields first along the perimeter. Both potato psyllids and liberibacter are known to not be favored by very hot weather, but the role that weather has played in our findings to date or in disease epidemiology in general remains unclear.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Potato Psyllids and Zebra Chip
Potato All Locations
Potato Psyllids and Zebra Chip
Posted on: July 22, 2012 by Erik Wenninger
The single potato plant observed on July 17 at the Kimberly R&E Center with zebra chip symptoms has tested positive for liberibacter, the bacterium that causes zebra chip. Several other plants with suspicious wilting symptoms were tested as well, and two of them also tested positive for liberibacter. Since these samples were taken, at least two additional plants were found at the Kimberly R&E Center with zebra chip symptoms; these also will be tested for liberibacter.
Also on July 17, several plants with suspicious symptoms from a grower field from which liberibacter-positive psyllids had been collected were tested for liberibacter. These plants all tested positive for liberibacter.
Two of the four psyllids collected from last week’s U-Idaho scouting program (week of July 9) tested positive for liberibacter. Both positive psyllids were in Twin Falls County; the psyllid found in Jerome County was negative.
The number of potato psyllids collected by our scouting program is now increasing, though numbers are still much smaller than what has been found in the Columbia basin. This past week, the U-Idaho sampling program collected potato psyllids from three grower fields (all in Twin Falls County) and from the Kimberly R&E Center. From the three grower fields, we collected 8, 6, and 4 potato psyllids, all but one of which was collected on yellow sticky cards (one was from a vacuum sample). We collected 8 psyllids at the Kimberly R&E Center.
Additionally, last week several potato psyllids were found on sticky cards taken into the Kimberly or Parma R&E Centers by crop consultants. Three potato psyllids were found across two potato fields in Canyon County, and on July 15 a single potato psyllid was collected from the Sand Hollow area of Canyon County from potatoes in a non-commercial setting. All samples will be sent to the University of Idaho campus to test for liberibacter.
We have now confirmed what is to our knowledge the first finding of ZC potato plants from this year’s planting in the Pacific Northwest this season. However, we continue to encourage scouting in order to make the most sound and appropriate management decisions for a given field.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids.
http://www.kimberly.uidaho.edu/potatoes/
http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
Organic Field Day at U-Idaho, Kimberly
All Crops All Locations
Posted on: July 18, 2012 by Erik Wenninger
The University of Idaho and NCAP will be holding an Organic Research Field Day at the Kimberly R&E Center on July 24. See the link below for details and registration information.
This field day will feature a variety of University of Idaho research projects:
• Cover Crop Calculator – Amber Moore
• Cover Crop and Forage Variety Trials – Christi Falen, Lauren Hunter, Glenn Shewmaker, and Steve Hines
• Biocontrol for White Mold in Dry Beans – Oliver Neher
• Meals as Potential Organic Pesticides in Dry Beans – Don Morishita, Oliver Neher, and Erik Wenninger
• Organic Seed Production of Beans, Winter Wheat, and Spring Barley – Kathy Stewart-Williams
• Colorado Potato Beetle Response to Potato Varieties – Erik Wenninger
• Potato Virus Y Management in Potatoes – Oliver Neher
• Organic Potato Fertility Guide – Amber Moore
• New Potato Varieties, Cultural Management Trials, and Implications in Storage – Nora Olsen
• Composting of offal, mortalities, and grape vine prunings – Mario de Haro Marti
» http://pesticide.givezooks.com/events/ui-organic-field-day
Plant with zebra chip symptoms found in Idaho
Potato All Locations
potato psyllid & zebra chip
Posted on: July 17, 2012 by Erik Wenninger
A single potato plant was observed on July 17 at the Kimberly R&E Center with classic zebra chip symptoms: aerial tubers, pink coloration on leaves, curling of leaves, and characteristic internal discoloration of tubers. Samples were sent to the University of Idaho campus to run molecular tests to confirm presence of liberibacter, the causal agent of zebra chip, but based on symptoms, we are reasonably confident that the plant is positive for zebra chip. The plant was pulled from the field and destroyed.
Additionally, psyllid samples collected on July 3 from two commercial fields in Twin Falls County have tested positive for liberibacter.
Samples for this week from other fields being scouted by the University of Idaho scouting program are still being collected and processed; we will have an update later on findings from these samples.
Two adult potato psyllids collected on yellow sticky traps from Elmore County on July 15 were taken into the Parma R&E Center. Two adult potato psyllids (one on July 13 and one on July 15) on yellow sticky traps from Minidoka County were taken into the Kimberly R&E Center. These samples will be sent to the University of Idaho campus to test for liberibacter.
To our knowledge, we have the first (preliminary) finding of a ZC potato plant from this year’s planting in the Pacific Northwest this season. However, we continue to encourage scouting in order to make the most sound and appropriate management decisions for a given field.
Refer to the sites below for guidance on scouting and IPM programs for potato psyllids.
» http://www.kimberly.uidaho.edu/potatoes/
» http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/30058/pnw633.pdf
no potato psyllids in Idaho so far
Potato All Locations
potato psyllid
Posted on: June 22, 2012 by Erik Wenninger
No potato psyllids found on potatoes in Idaho so far...
Updated 22 June 2012
Erik Wenninger, Nora Olsen, Phil Nolte, Mike Thornton, and Alex Karasev, in cooperation from Jeff Miller and Andy Jensen, are monitoring potato fields in Idaho for potato psyllids and Liberibacter, the bacterium that causes zebra chip (ZC). We are still processing some of the samples collected this week, but so far no potato psyllids have been found in any of the fields we are monitoring in Idaho. More information on potato psyllids and zebra chip can be found here: http://www.kimberly.uidaho.edu/potatoes/
Malheur Experiment Station Field Day
Announcements All Locations
Posted on: June 22, 2012 by Jerry Neufeld
Oregon State University will be hosting the “Summer Farm Festival and Malheur Experiment Station Field Day” on July 11, 2012. Click on the pdf below for more information.
Potato Psyllid and Zebra Chip
Announcements All Locations
Potato Psyllid
Posted on: June 15, 2012 by Jerry Neufeld
Click on the pdf below for the latest edition (June 14) of the “Potato Progress”. This edition has an update on Potato Psyllid and Zebra Chip.
Field Days to Highlight Alternative Production Practices
All Crops All Locations
Posted on: June 14, 2012 by Jennifer Miller
The Northwest Center for Alternative to Pesticides (NCAP) is organizing two field days in June to highlight alternative production practices – Blue Sage Farm of Shoshone, ID on June 20 and Hamanishi Farms of Fruitland, ID on June 27.
Wednesday, June 20
Blue Sage Farm http://bluesagefarm.com/
Shoshone, Idaho
Check-in at 9 am
Tour from 9:30 am – 12:30 pm; Lunch at 12:30 pm
$15 per person (Lunch provided)
Register by June 14 at www.pesticide.org or with Jen Miller (jmiller@pesticide.org or 208-850-6504)
Laura Sluder of Blue Sage Farm in Shoshone will host a tour of her sheep dairy. Sluder milks 70 sheep and produces feta and manchego-style cheese with the farm’s cheesemaker, Jillian Greenawalt. Greenawalt also milks her dairy goats and produces a variety of chevre at the farm.
Sluder uses her working Belgian horses for much of the fieldwork. Attendees will be treated to a horse-drawn tour of the farm. The field day will feature the milking parlor, the cheese-making facility, grazing for weed management, and alternative forages.
University of Idaho extension educators Christi Falen and Mario de Haro Marti will describe their work with Sluder on forages and cover crop trials and a whey and offal composting project, respectively.
Wednesday, June 27
Hamanishi Farms http://www.hamanishifarms.com
Fruitland, Idaho
Check-in at 9 am
Tour from 9:30 am – 12 pm; Lunch at 12 pm
$15 per person (Lunch provided)
Register by June 21 at www.pesticide.org or with Jen Miller (jmiller@pesticide.org or 208-850-6504)
George McClelland and Jon Fabricius of Hamanishi Farms produce mint, alfalfa, wheat, onions, corns and beans on 1,000 acres and certified organic mint, alfalfa and wheat on 70 acres. The tour will highlight a trial of cover crop mulches for weed suppression, which the farm is working to develop in its organic and conventional mint, the on-farm composting operation, and a permanent drip system.
Additional tour details at www.pesticide.org.
These field days are supported in part by the USDA Risk Management Agency and NCAP business sponsors, including Brandtastic Soil, Café Mam, Frontier Natural Products Co-op, Organic Valley NOVA, Magic Valley Compost, Pharmgrade Compost, Magic Valley Compost, Perma-Guard, We Rent Goats, and Western Ag Research.
###
Updates on PNW Potato Psyllid and Zebra Chip
Potato All Locations
Potato Psyllid
Posted on: June 8, 2012 by Andy Jensen
Attached is Volume 12, Number 10 of the Potato Progress.
This issue answers a number of questions many of you have about zebra chip (ZC) and potato psyllid. In this issue: answers to several of the many good questions we received during the psyllid workshops held throughout the region, some information on psyllid overwintering, something about insecticide tests from WSPC-funded work in Texas, and some detailed information and photos to help with psyllid monitoring using yellow sticky cards (the latter will also be posted on the website, www.nwpotatoresearch.com).
Idaho Potato Psyllid Monitoring Update
Potato All Locations
Potato Psyllid
Posted on: June 7, 2012 by Erik Wenninger
No potato psyllids found on potatoes in Idaho so far…
Updated 7 June 2012
Erik Wenninger, Nora Olsen, Phil Nolte, Mike Thornton, and Alex Karasev, in cooperation from Jeff Miller and Andy Jensen, are monitoring potato fields in Idaho for potato psyllids and Liberibacter, the bacterium that causes zebra chip (ZC). This project, funded by the Idaho Potato Commission, includes a total of about 14 grower fields across the Treasure Valley, Magic Valley, and eastern Idaho. We began taking weekly samples during the week of May 21. Sampling efforts include yellow sticky traps (for adults), leaf samples (for nymphs), and vacuum samples (for adults; the vacuum sampler is a leaf blower with a vacuum attachment and a net to capture insects removed from potato foliage). So far no potato psyllids have been observed in any of our samples. We are only able to cover so much acreage in our sampling efforts, so we encourage all growers and crop consultants to conduct sampling as well. Photographs and key diagnostic characters of the different life stages of potato psyllids can be found at http://www.kimberly.uidaho.edu/potatoes/. You also may take samples to your local University of Idaho R & E Center to confirm identifications. We will continue to provide periodic updates of our monitoring efforts, and we will send out an immediate notification upon detection of any potato psyllids in potato. Potato psyllids also will be tested for presence of the ZC bacterium.
Idaho
Potato All Locations
Potato Psyllid
Posted on: May 14, 2012 by Nora Olsen
REMINDER
Idaho zebra chip (ZC) and potato psyllid workshops scheduled for this week.
To help industry prepare for psyllid monitoring and scouting, several training sessions have been scheduled. The workshops will have an open format, and we ask people to come any time that fits their schedule during each session. This will allow more personal attention and access to specimens and samples as people come and go. Dates, times, and locations for these sessions are:
May 15, 9:30 – noon, Parma Research and Extension Center, 29603 U of I Lane, Parma
May 16, 9:30 – noon, Miller Research LLC, 426 East 200 North, Rupert
May 17, 9:30 – noon, Idaho Falls R & E Center, 1776 Science Center Dr.
Webcast on Internal Heat Necrosis
Potato All Locations
Internal Heat Necrosis
Posted on: May 1, 2012 by Jeff Miller
Internal Heat Necrosis of Potato Featured in Latest Focus on Potato Webcast
Internal Heat Necrosis, or IHN, has many aliases. They include internal brown spot, physiological internal necrosis, internal browning, internal brown fleck, and chocolate spot.
Whatever you choose to call this physiological disorder, it is an economically significant problem, particularly in the mid-Atlantic and southern United States. It is also the latest topic addressed in Focus on Potato, the Plant Management Network's nonprofit webcast resource for potato growers and consultants.
In this talk, Dr. Craig Yencho, Professor in the Department of Horticulture at North Carolina State University, covers various aspects of IHN including symptoms and control, when a crop is at risk of developing IHN, models to predict the occurrence of IHN, varietal resistance to IHN, and current research efforts to develop IHN resistant potato varieties.
This presentation is open access through June 30, 2012 and can be viewed at the link listed below. Users can view other recent webcasts in the Focus on Potato resource with a paid subscription.
Focus on Potato is a publication of the Plant Management Network (PMN), a nonprofit online publisher whose mission is to enhance the health, management, and production of agricultural and horticultural crops. It achieves this mission through applied, science-based resources. PMN is jointly managed by the American Society of Agronomy, American Phytopathological Society, and Crop Science Society of America.
» http://www.plantmanagementnetwork.org/edcenter/seminars/potato/HeatNecrosis/
Zebra Chip and Potato Psyllid
Announcements All Locations
Potato Psyllid
Posted on: April 27, 2012 by Jerry Neufeld
Zebra chip (ZC) and potato psyllid are on a lot of your minds this spring. To help industry
prepare for psyllid monitoring and scouting, several training sessions have been scheduled. The
workshops will have an open format, and we ask people to come any time that fits their schedule during
each session. This will allow more personal attention and access to specimens and samples as people
come and go. Dates, times, and locations for these sessions are:
Washington
May 1, 1:30 – 4 pm, Moses Lake, Potato Commission office, 108 S Interlake Rd.
May 2, 9:30 – noon, Pasco, Franklin County Extension office, 404 W. Clark Ave.
Idaho
May 15, 9:30 – noon, Parma Research and Extension Center, 29603 U of I Lane, Parma
May 16, 9:30 – noon, Miller Research LLC, 426 East 200 North, Rupert
May 17, 9:30 – noon, Idaho Falls R & E Center, 1776 Science Center Dr.
Oregon
April 17, 9:00 – 10:00 am, Hermiston Ag. Research and Extension Center, 2121 South First Street
May 1, 9:00 – 10:00 am, Hermiston Ag. Research and Extension Center, 2121 South First Street
No stripe rust found yet
Small Grains All Locations
Stripe rust
Posted on: April 14, 2012 by Juliet Marshall
Stripe rust not yet seen
As of Friday, April 13th, I have seen no stripe rust in southern or southeastern Idaho. I have been in winter wheat fields in Aberdeen, Kimberly and Buhl and have not found sporulating pustules. Please report any stripe rust so that we can get alerts out as quickly as possible.
At this point we are not recommending fungicide application for moderately resistant or resistant varieties. Fungicides at herbicide application of susceptible varieties is still being recommended.
» http://www.extension.uidaho.edu/scseidaho/disease/disease_index.htm
Webcast on potato sugar management
Potato All Locations
Sugar management
Posted on: April 6, 2012 by Jeff Miller
A new webcast is available through Focus on Potato on sugar management. The webcast will be freely available through May 31. The webcast can be viewed at the link below.
From Focus on Potato:
Sugar management is an important factor for potato crops. In this month's Focus on Potato presentation, titled "Sugar Management in Storage," Dr. A.J. Bussan from the University of Wisconsin guides viewers through sugar management of tubers during various stages of crop management and storage. This talk offers guidance on in-season practices, best practices and timing during potato harvest, preconditioning in storage and storage management.
» http://www.plantmanagementnetwork.org/edcenter/seminars/potato/sugarmanagement/
Psyllid identification workshops
Potato All Locations
Potato psyllid/zebra chip
Posted on: March 30, 2012 by Jeff Miller
Zebra chip (ZC) and potato psyllid are on a lot of your minds this spring. To help industry
prepare for psyllid monitoring and scouting, several training sessions have been scheduled. The
workshops will have an open format, and we ask people to come any time that fits their schedule during
each session. This will allow more personal attention and access to specimens and samples as people
come and go. Dates, times, and locations for these sessions are:
Washington
May 1, 1:30 – 4 pm, Moses Lake, Potato Commission office, 108 S Interlake Rd.
May 2, 9:30 – noon, Pasco, Franklin County Extension office, 404 W. Clark Ave.
Idaho
May 15, 9:30 – noon, Parma Research and Extension Center, 29603 U of I Lane, Parma
May 16, 9:30 – noon, Miller Research LLC, 426 East 200 North, Rupert
May 17, 9:30 – noon, Idaho Falls R & E Center, 1776 Science Center Dr.
Oregon
April 17, 9:00 – 10:00 am, Hermiston Ag. Research and Extension Center, 2121 South First Street
May 1, 9:00 – 10:00 am, Hermiston Ag. Research and Extension Center, 2121 South First Street
Potato psyllid management recommendations for 2012
Potato All Locations
Potato psyllid/ZC
Posted on: March 20, 2012 by Jeff Miller
With the detection of Zebra Chip in 2011, many people have questions about managing potato psyllids and Zebra Chip in 2012. Attached are three documents aimed at providing the most accurate information available for our situation in Idaho:
1. Idaho recommendations (drafted by Phil Nolte, Erik Wenninger, Mike Thornton, and Nora Olsen of the University of Idaho; Jeff Miller of Miller Research; and Andy Jensen of the ID/WA/OR Potato Commissions)
2. Biology and Management of Potato Psyllid in Pacific Northwest Potatoes by Alan Schreiber (Agriculture Development Group, Inc.), Andy Jensen (ID/WA/OR Potato Commissions), and Silvia Rondon (Oregon State University).
3. Psyllid Identification/Information Card
Please contact us (Phil Nolte, Erik Wenninger, Mike Thornton, Nora Olsen, of the University of Idaho; Jeff Miller of Miller Research; or Andy Jensen of the ID/WA/OR Potato Commissions) if you have any questions or comments regarding the plan. This information also will be posted at multiple websites as indicated in the recommendation plan.
potato pysllid
Potato All Locations
potato psyllid
Posted on: February 24, 2012 by Jerry Neufeld
Click on the pdf below to learn more about the potato psyllid in the "Potato Progress." The publication is entitled "Biology and Management of Potato Psyllid in PNW Potatoes.
Idaho Hay and Forage Conference
Announcements All Locations
announcement
Posted on: February 14, 2012 by Jerry Neufeld
Attached is a pdf with information about the Idaho Hay and Forage Conference on March 1 and 2 in Burley, Idaho at the Best Western Burley Inn and Convention Center. There will be 3 Idaho pesticide license credits and 3 CCA credits available. Registration is thru Idahohay.com. Click on the pdf below for more information.
Cereal Schools
Small Grains All Locations
Posted on: January 30, 2012 by Juliet Marshall
Southern and Southeastern Idaho Cereal Schools will be the week of Fe 7 - 10th. Check the website for agenda details. CCA and ISDA credits will be available.
February 7 – Burley, ID
February 8 – Pocatello, ID
February 9 – Idaho Falls, ID
February 9 – Ashton, ID
February 10 – Preston, ID
Experts Predict Less Stripe Rust This Year
Small Grains All Locations
Stripe Rust
Posted on: January 23, 2012 by Juliet Windes
See the following article on predictions of stripe rust in Washington and Oregon.
http://www.capitalpress.com/content/mw-Stripe-rust-update-011312-Xianming-ChenMike-Flowers-mugs
I am also predicting substantially less stripe rust due to the open winter we have had so far and the reduced 2011 fall infection over that seen in 2010. We will need to remain more concerned about the spring wheat this year as spores traveling from our west will be the main source of inoculum.
» http://www.capitalpress.com/content/mw-Stripe-rust-update-011312-Xianming-ChenMike-Flowers-mugs
Two organic farming meetings will be held Friday and Saturda
All Crops All Locations
Organic Farming Meeting
Posted on: January 17, 2012 by Nora Olsen
Two organic farming meetings will be held Friday and Saturday February 3 and 4 in Twin Falls.
Friday Afternoon Symposium: Cultivating Connections – Building Idaho’s Organic Farming Community
Friday, February 3 from 1 – 5 pm
The Herrett Center, College of Southern Idaho
Presentations will include the following:
- Organic Program Update, Brandon Lamb, ISDA
- Food Safety and Good Agriculture Practices (GAPs), Nora Olsen, UI
- Organic Crop and Livestock Insurance Options, Jeff Schahzenski, NCAT/ATTRA
- Cover Crop Nutrient Calculator, Amber Moore, UI
- Dairy Compost & Cover Crop Variety Trials, Lauren Hunter, UI
- Colorado Potato Beetle Response to Potato Varieties, Erik Wenninger, UI
Registration is $8 or free with the Grower’s Own Conference (below).
Grower’s Own Conference
Friday evening February 3
5:30 – 9 pm Conference Opening with Digital Farm Tours
Saturday, February 4
8 am – 4:15 pm Farmer-to-Farmer Exchange
The Herrett Center, College of Southern Idaho
$55 per person, includes dinner on Friday and breakfast and lunch on Saturday.
Pre-registration is required by January 20.
Register on-line at www.pesticide.org or print and mail the registration flier.
Contact Jennifer Miller at jmiller@pesticide.org or 208-850-6504 with questions.
The networking portion of the conference kicks off Friday evening with the popular “virtual” farm tours. Three Idaho farms and guest farmer Jim Bronec of Oregon will share digital slide shows. Bronec produces organic clover seed, squash, Jack-O Lantern pumpkins, and fresh sweet corn on his 50-acre Praying Mantis Farm.
Prior to the Grower’s Own conference, participants will vote on the topics to be discussed during the Saturday farmer-to-farmer exchange. A few of this year’s topics under consideration include cultivation equipment; finding your niche products; producing livestock feed; seasonal high tunnels; alternative financing; seed production; alternative livestock health practices; integrated pest management, and value-added products.
These meetings are presented by the Northwest Center for Alternatives to Pesticides. Funding for this conference is provided in part by the Organic Farming Research Foundation and USDA Risk Management Agency.
PrimusGFS GAP Certification for Produce Growers
All Crops All Locations
PrimusGFS GAP Certification for Produce Growers
Posted on: January 9, 2012 by Nora Olsen
PrimusGFS GAP Certification for Produce Growers, Tuesday, February 14, 2012 8:00 am – 5 pm Hilton Garden Inn, Idaho Falls, Idaho
PrimusGFS is a food safety audit scheme which is approved by the Global Food Safety Initiative (GFSI) for the food safety certification of agricultural producers. It focuses on products of the agricultural sector designated for human consumption in their fresh or minimally processed state. PrimusGFS GAP certification establishes a series of requirements for managing production and handling of fruits and vegetables on the farm. Many retail customers such as Wal-Mart, Safeway, Publix, and Costco now require agricultural producers to be GAP-certified by a GFSI compliant audit scheme, and will no longer accept the USDA GAP audit. This workshop will provide a simple, step by step guide on how to prepare an agricultural operation to successfully complete a PrimusGFS audit.
Register at www.techhelp.org.
Pest Alert website
Announcements All Locations
Posted on: December 20, 2011 by Jerry Neufeld
Thank you to everyone for filling out a pest alert survey for 2011. The winners of the Outback Steakhouse Gift Certificates are Wayne Smith, Jim Rooney, and Larry Lombard. Certificates are going in the mail today.
Jerry Neufeld
Pest Management Workshop
Potato All Locations
Posted on: November 15, 2011 by Jeff Miller
Miller Research LLC will be holding its annual pest management research meeting on Wednesday, December 7. The meetings will be held at the Miller Research facility located near Acequia, ID. (426 E 200 N) Presentations will discuss chemical and cultural practices to manage crop diseases. The focus of the meeting will be on potato diseases, but we will be sponsoring a presentation on managing stripe rust in small grains due to the timeliness of the subject.
9:00-10:00: Managing foliar diseases of potato (early blight, brown leaf spot, white mold, gray mold, late blight, and black dot) – Dr. Terry Miller and Trent Taysom, Miller Research
10:00-11:00: Managing soil-borne diseases of potato (Rhizoctonia, silver scurf, pink rot, black dot) – Dr. Jeff Miller, Miller Research
11:00-11:30: Managing Zebra Chip in potato – Dr. Nora Olsen, University of Idaho
11:30-12:00: Managing stripe rust in small grains – Dr. Juliet Marshall, University of Idaho
Cereal School Planning Meeting Nov 2 10:00 AM
Small Grains All Locations
Posted on: October 30, 2011 by Juliet Marshall
A reminder to put the cereal schools planning meeting on your calendar! This is for the Burley, Pocatello, Idaho Falls, Ashton, and Preston schools being held Feb 7 through the 10th.
Nov 2, 2011 Wednesday morning
Sizzler Steak House on Pocatello Creek Road
Pocatello, ID
10:00 – 12:00 – enter through the back door of the restaurant, we will discuss and vote on topics important to our industry.
12:00 – we will pay for lunch.
Growers, industry reps, commodity groups are welcome. The more input, the better.
If you can’t make it, send your topics of interest to us and we will put all ideas on the table for a vote.
I hope to see you there.
Cheers,
Juliet
Confirmation of Zebra Chip in Idaho
Potato All Locations
Zebra Chip
Posted on: October 10, 2011 by University of Idaho
On October 7, 2011 an announcement was made regarding a new potato disease found in Idaho. It is called Zebra Chip. This disease is caused by a bacterium (Liberibacter) that is transmitted by Potato Psyllids. This disease has been around for numerous years, traditionally plaguing southern US potato fields. In September it was found in the Columbia Basin of OR and WA and has now been confirmed in Idaho. Although research has been done over the last several years there is still a lot we do not know about this disease and psyllid movement.
Tuber samples of several varieties were collected in Jerome and Twin Falls counties during the last two weeks. Please see the photos in the attachment for reference. Zebra Chip causes necrotic flecking in the flesh of the tuber similar to net necrosis but the symptoms extends throughout the length of the tuber. When diseased tuber tissues are fried the disease causes severe darkening in both chips and fries. Because symptoms can be seen in uncooked tissues, the disease is a concern for both fresh and process potatoes. One interesting thing to note is that typically infected tubers will not sprout.
Samples may be submitted to the University of Idaho for verification. Samples can be taken to your county extension office or taken directly to Phil Nolte (Idaho Falls R & E Center, 208-529-8376), Mike Thornton (Parma R & E Center, 208-722-6701) or Nora Olsen (Twin Falls R & E Center, 208-736-3600). We can either confirm it from visual symptoms or will send it off for verification. Please note the county and variety with the sample. No need to keep samples cool now that the weather has changed but do keep them from freezing. Place cut tuber in a plastic bag with insulation around it and fed ex to one of us. Avoid sending on Friday since the sample may be left out unprotected. Questions can be directed to Phil Nolte at the above number.
We will keep you posted on the progress of this disease in Idaho. The good news is that of the fields identified as infected to date, the incidence of infected tubers has been extremely low. We should also note that potato psyllids are not known to overwinter in the northern US, so their presence may be a transient problem related to the unusual weather pattern during 2011. We are all currently on a steep learning curve and need to work together to identify the scope of this problem and the best way to manage it.
Additional information can be found at http://agrilife.org/zebrachip/
Phil Nolte, Mike Thornton and Nora Olsen, University of Idaho.
Late blight on home garden tomatoes
Potato All Locations
Late blight (tomato)
Posted on: September 22, 2011 by Jeff Miller
Late blight has recently been confirmed on tomato plants from a home garden in Preston, ID. This late in the season, the occurrence is not a threat to potato production. Work is being done to determine if this occurrence is related to the potato late blight that was found nearby in Utah, or if this was an independent occurrence. This finding emphasizes the importance of watching tomatoes as a potential source for late blight.
Pesticide Disposal Program
Announcements All Locations
Posted on: September 6, 2011 by Jeff Miller
The Idaho State Department of Agriculture is hosting its unusable pesticide disposal program in the Magic Valley and Eastern Idaho in September. The dates and locations for disposal are:
Rexburg on Sept 12 at the Madison County Transfer Station
American Falls on Sept 13 at the Power County Transfer Station
Burley on Sept 14 at the Bureau of Land Management Yard
Twin Falls on Sept 15 at the Twin Falls Canal Company
Collections will run from 9:00 AM to 1:00 PM each day. The first 1,000 pounds are free and pre-registration is required. Only pesticides will be accepted – no fertilizers, paints, or oils.
If you have any questions, please contact the following:
Boise office - Victor Mason (208) 332-8628; Luis Urias (208) 332-8663 or Paula Chase (208) 332-8605
Twin Falls Office - Randy Quigley (208) 736-5277, Westy Pickup (208) 736-4759 or Jim Childs (208) 736-4790
Pocatello Office - Steve Riedy (208) 236-6091 or Kenneth Funk (208) 236-6352
Idaho Falls Office - Craig Carlson (208) 525-7037
Late blight found in northern Utah
Potato All Locations
Late blight
Posted on: September 2, 2011 by Jeff Miller
Late blight has been confirmed by the University of Idaho in a potato field in northern Utah. It appears the disease has been present for at least two weeks, but spread has been limited due to dry weather conditions.
It is highly unlikely that this field would pose a threat to Idaho potatoes. However, this confirmed outbreak illustrates that late blight could be present in other fields in our state. Growers with fields that are still green and weeks away from vine kill need to be sure that the foliage is protected. A standard protectant such as chlorothalonil or EBDC will be effective in doing this.
Idaho Association of Plant Protection
All Crops All Locations
Posted on: August 30, 2011 by Jeff Miller
The first call for presentations for the Idaho Association of Plant Protection (IAPP) has been announced.
The IAPP is an informal group which meets each year to discuss research related to plant protection. Presentations range from basic to applied on a variety of crops. Most deal with potatoes, sugarbeets, and small grains, but presentations have been given on other commodities as well. The meeting will be held on the afternoon of Tuesday, November 8 (1:00 pm to 5:00 pm) and the morning of Wednesday, November 9 (8:00 am to 12:00 pm) at the Best Western Sawtooth Inn in Jerome, ID. Anyone can give a presentation if they would like. Or you can just come and enjoy the presentations. The cost for attending is $15.00 (check or cash only).
If you have any additional questions, please contact Phill Wharton at pwharton@uidaho.edu or 208-397-4181.
Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: August 8, 2011 by Jeff Miller
Miller Research will be holding a potato pest management field day on Monday, August 15 at the Miller Research facility located near Acequia, ID (426 E 200 N). A short presentation will be given in the office followed by a tour of the research plots sponsored by the Idaho Potato Commission. Lunch will be provided. There is no cost to attend.
The tour will highlight new research on early blight, white mold, black dot, Rhizoctonia, and pink rot. Two ISDA recertification credits and 2 CCA (pest management) credits have been awarded for this meeting. Please RSVP to Jeff Miller at 208-531-5124 or by email at jeff@millerresearch.com so that we can get an accurate count for room preparation purposes.
Stripe Rust Alert
Small Grains All Locations
Stripe Rust
Posted on: July 8, 2011 by Juliet Marshall
Much of the stripe rust in winter wheat is starting to shut down, especially in those varieties with high-temperature adult plant resistance (HTAP). We are, at this stage, past the application window for applying fungicides to control stripe rust in winter wheat. In any case, further application in winter wheat would not be economically beneficial. Most of the winter wheat is in or past the grain fill stage.
In our spring grain, significant damage can still occur depending upon growth stage. The preharvest intervals for most of the fungicides vary from 45 – 30 days, depending upon the fungicide. PLEASE READ AND FOLLOW THE LABEL INSTRUCTIONS. DO NOT spray past the recommended preharvest interval. Spring grains are now in grain fill in the lower elevations, flowering in the Idaho Falls region, and still at stem extension in the upper elevation areas. Some of the spring lines with HTAP are showing higher than expected stripe rust infection (UI Pettit) while HTAP in Alturas, for example, is holding. Those fields that have been sprayed with fungicides at herbicide timing did very well in reducing infection compared to those that were not sprayed, although stripe rust is re-establishing if a second fungicide application was not applied.
In barley, we can find stripe rust but any damage has been minimal. I have yet to see stripe rust in barley in commercial fields at damaging levels. Most barley is past flowering in most of the production areas, except in the higher elevation areas.
ON OUR WEBSITE is an excel file with ratings of the winter and spring wheat varieties in the extension variety trials in Aberdeen. PLEASE NOTE that the disease pressure at that location is extraordinary. While I included both the seedling and adult reaction of the spring wheat, I did not for the winter wheat, but there are two ratings in the spring/summer and I included the raw data of two replications (untreated with fungicides). The infection type is rated on a 0 to 9 scale, with 0 being immune, 1, 2, 3 resistant, 4,5,6 intermediate, and 7, 8, 9 being susceptible. A rating of 9 means the plant was heavily infected with no chlorosis, and high levels of sporulation. If you would like further information/ clarification on the definitions of infection TYPE, let me know. In addition, there is a rating on the percent leaf area affected in the entire plot. Some varieties have a susceptible reaction, with lower levels of diseased tissue. There was a tremendous amount of necrosis this year, hence the mixed reaction types. For example, one variety may have a rating of 5/8 and percent 30/5, meaning that 30 % of the plot had an infection type about 5 (intermediate resistance with quite a bit of necrosis but sporulating still) and 5 % of the plants in the plot were showing extensive sporulation with an infection type of 8, with a little chlorosis.
Late blight in potato
Potato All Locations
Phytophthora infestans
Posted on: June 29, 2011 by Jeff Miller
Late blight has been found in the Columbia Basin and is present in four fields north of the Tri-Cities.
It is recommended that all growers prepare for late blight due to the favorable weather conditions experienced this spring and the presence of late blight in many seed areas this past year. A summary of fungicides that are effective against late blight can be found at the link below.
If you find any suspicious samples, please send them to University of Idaho extension personnel or to us here at Miller Research. Even if you know you have found late blight, we would like samples in order to determine the genetic strain. This will better help us understand where the late blight originated. All submissions will be held confidential and reported only on a county basis.
» http://www.millerresearch.com/reports/LateBlight/Overview_of_Fungicides_for_Late_Blight.pdf
Pest Advisory 6
Tree Fruits All Locations
Peach Twig Borer
Posted on: June 28, 2011 by Tony McCammon
Here is the final issue of the Pest Advisory for 2011. Hopefully you are on the right path to success. Good luck with your harvest and I hope it is bountiful. In this issue I covered the key pests for July and August. Good luck,
Agri-Mek Section 18 approved
Onion All Locations
Thrips
Posted on: June 27, 2011 by Steve Norberg
Section 18 approved for Agri-Mek in Oregon for thrips in onions. See Oregon Department of Agriculture for label at
http://oregon.gov/ODA/PEST/sec18.shtml or see attached label and letter.
onion thrips
Onion All Locations
onion thrips
Posted on: June 14, 2011 by Jerry Neufeld
Dr. Clint Shock, Superintendant at the OSU Malheur Experiment station is reporting that thrips counts have passed three per plant at the Oregon State University Malheur Experiment Station. Dr. Mike Thornton from the UI-CALS Parma Research and Extension Center is reporting average thrip counts of nearly one per plant. Recent research has shown that most control programs are most effective when early season sprays start when populations are no more than 1 to 3 thrips per plant.
Updated USDA GAP Audit
Potato All Locations
Posted on: June 9, 2011 by Nora Olsen
Please note an updated USDA Good Agricultural Practices (GAP)Good Handling Practices (GHP)Audit Verification Checklist is now available. This latest version was effective June 6, 2011. Visit the USDA website to view the newest version:
http://www.ams.usda.gov/gapghp
The University of Idaho will update their GAP organizational manual to coincide with the latest GAP Audit version. Visit www.kimberly.uidaho.edu/potatoes/gap.htm in the future to download the updated manual.
Only minor changes were made to the audit but these changes will need to be addressed in all future farm and storage audit visits.
Stripe Rust Alert
Small Grains All Locations
Pucinnia striiformis
Posted on: May 12, 2011 by Juliet Windes
Aberdeen, Bingham County, Idaho. Stripe rust is being reported in commercial fields as of May 12, 2011, in Brundage soft white winter wheat. Stripe rust also has continued to proliferate on the Aberdeen Research and Extension Center in USDA-ARS material, in UI Breeding plots and in the University of Idaho’s Cereal Extension plots. The infected plants were at the jointing growth stage. New leaves were not yet infected; sporulation was occurring on lower leaves as a result of an overwintering infection (the first I have seen here in southeast Idaho).
On the Aberdeen research station, Brundage had about 30% affected leaves throughout the plot, Moreland about 5% of the leaves affected. Active and abundant sporulation was occurring. Stripe rust was prevalent throughout the winter wheat variety trials, and two out of the four reps of both the soft white winter and hard red / white winter nurseries were sprayed with a fungicide last week.
Weather is very conducive for infection and rapid spread. It is imperative to protect susceptible varieties with a fungicide. Both strobilurin and triazole fungicides are effective in protecting against subsequent stripe rust infections. However, if stripe rust is currently in your crop, it is recommended that you utilize a triazole fungicide for their slightly curative activity. Fungicide ratings for stripe rust are: Excellent = azoxystrobin (Quadris), pyraclostrobin (Headline), metconazole (Caramba), tebuconazole (Folicur), and fungicide mixes rated Excellent for stripe rust includes Proline, Twinline, Quilt.
Additional information and pictures are available on the Cereals Extension website for southern and southeast Idaho: http://www.extension.uidaho.edu/scseidaho/disease/disease_index.htm
» http://www.extension.uidaho.edu/scseidaho/disease/disease_index.htm
Pest Alert Website
Announcements All Locations
Computers
Posted on: May 10, 2011 by Jerry Neufeld
Everyone,
Sorry for the multiple emails about the SWCD meetings for February. We are having website problems with an uncooperative computer. Please accept our apologies.
Jerry
NPDES permits
Announcements All Locations
Posted on: March 29, 2011 by Jerry Neufeld
There has been much talk this winter about the new rule at EPA requiring producers and other pesticide applicators to have an NPDES permit if applying pesticides near or to water. The original court ruling required that EPA have this permit in place by April 9, 2011. The latest court ruling has just extended this mandate until October 31, 2011. You can see the judge’s ruling by clicking on the pdf below.
Webcast in potato irrigation
Potato All Locations
Posted on: March 1, 2011 by Jeff Miller
A new webcast is available through the Focus on Potato website (www.plantmanagementnetwork.org/fop). While much of the content is only available through a paid subscription, new webcasts (such as the one described below) are available for viewing at no cost for a period of time. The following webcast is available for no charge through April 30. If you have any questions or feedback, please feel free to contact me (Jeff Miller, 531-5124 or jeff@millerresearch.com).
"Avoid Crop Water Stress, Produce Higher Yielding, Quality Potatoes through Latest Focus on Potato Webcast"
Careful irrigation is required to avoid crop water stress and produce high-yielding, high quality potatoes.
To help growers and consultants achieve this end, Focus on Potato, a crop science resource for growers and consultants in the potato industry, has published its latest webcast, titled “Early Season Irrigation Management of Potato.”
This 56-minute presentation, authored by Howard Neibling, Professor of Biological and Agricultural Engineering at the University of Idaho, explains a method of pre-season irrigation planning to evaluate the adequacy of irrigation system capacity under the viewer's specific climate and soil conditions for normal and unusually high water-use years.
And for marginal or inadequate systems, suggestions are given for pre-season equipment changes and water management strategies to produce a high yield and quality potato crop.
View this presentation at http://www.plantmanagementnetwork.org/edcenter/seminars/potato/Irrigation_EarlySeason/
Other presentations are available on the Focus on Potato website at www.plantmanagementnetwork.org/fop.
Focus on Potato is a publication of the Plant Management Network (www.plantmanagementnetwork.org), a nonprofit online publisher whose mission is to enhance the health, management, and production of agricultural and horticultural crops. It achieves this mission through its applied, science-based resources. PMN is jointly managed by the American Society of Agronomy, American Phytopathological Society, and Crop Science Society of America.
» http://www.plantmanagementnetwork.org/edcenter/seminars/potato/Irrigation_EarlySeason/
Stripe Rust Alert
Small Grains All Locations
Stripe Rust
Posted on: February 18, 2011 by Juliet Marshall
Thought we should all know what is transpiring to our west / northwest. See the stripe rust alert below from Dr. Xianming Chen, USDA-ARS, Pullman, WA. While this does not mean we WILL have an early and damaging amount of stripe rust this upcoming season, it does mean we will have increased risk of stripe rust developing. Conditions conducive for disease in wheat will also be conducive for disease in barley, although stripe rust in barley is rare.
We will be constantly monitoring the situation and will release additional alerts as needed. Check our website at
http://www.cals.uidaho.edu/scseidaho/
Juliet Marshall
Associate Professor, Cereals Pathology and Agronomy
Stripe Rust Starts Developing in the Pacific Northwest
Xianming Chen, February 18, 2011
Stripe rust of wheat has waked up much earlier this year than last year in the Pacific Northwest and may not have slept in the western Oregon and western Washington. Don Wysocki and Jim Towne found sporulating rust pustules in a wheat field near Pendleton in the northeastern Oregon on the 1st of this month. Last week, Mike Flowers and Chris Mundt reported that stripe rust was easily found (about 5% incidence) in wheat fields in the Willamette Valley of western Oregon.
Yesterday, I stopped by the Horse Heaven Hills in the south-central Washington and found sporulating rust pustules in several wheat fields, even in some fields where plants were still small (5 to 7 leaves without dead leaves) and stripe rust was not found in last November. Rust severity was up to 5% of incidence. The rust has survived the relatively mild winter with help with the widespread snow cover in the cold spell of the first week of last December.
Rust will develop fast when weather gets warm (night temperatures into the 40s F and day temperatures into the 50s F). Considering widespread infection before the winter, early application of fungicides will be better for fields planted with susceptible and moderate susceptible cultivars. Please check your fields when weather in your area reaches the above range and if you see stripe rust, consider spaying with fungicide even before herbicide application. If no rust is found but the planted cultivar is susceptible or moderately susceptible based on last year’s reaction, the field should be sprayed with fungicide when you spray herbicide. Please consider using full rate of fungicide at the time of herbicide application as the rust has already started so early and this rust season will likely be very long.
Miller Research Potato Pest Management Workshop
Potato All Locations
Posted on: January 28, 2011 by Jeff Miller
Miller Research LLC will be holding its annual potato pest management research meeting on Tuesday, February 15 and Wednesday, February 16. The same program will be presented both days. The meetings will be held at the new Miller Research facility located near Acequia, ID (426 E 200 N). Presentations will discuss chemical and cultural practices to manage diseases and nematode pests.
There is no cost to attend this meeting. A total of 3 CCA (pest management) and 3 ISDA recertification credits are available. If you have question or concerns you would like addressed please submit them by e-mail. If you know of other interested parties please forward this notice.
The meetings will begin at 8:30 and conclude at noon.
8:30 White mold control
9:00 Managing early blight and brown leaf spot
9:30 Late blight expectations for 2011
10:00 Break
10:15 Managing nematodes in potato (Dr. Saad Hafez)
11:00 Fungicides for pink rot management
11:30 Rhizoctonia and Fusarium dry rot management
Weed Short Course (Pesticide Credits)
Announcements All Locations
Posted on: January 26, 2011 by Steve Norberg
Weed Control Short Course
Feb. 15-16, 2011 (Applied for 12 ID, OR and WA credits, CCA credits also applied for)
Four Rivers Cultural Center
$65 per person until Feb. 7th
$75 per person after Feb. 7th
Lunch included in the price on the 15th.
For more information see attached file or call the Extension Office at 541-881-1417
Steve Norberg, Field Crops and Watershed Management
Webinar: Optimizing Fertility Management in Malting Barley a
Small Grains All Locations
Nitrogen Management
Posted on: January 25, 2011 by Juliet Marshall
Don’t Miss our next Idaho Grain Webinar… scheduled this Thursday, January 27, 2011 at 8:30 a.m. MST on Optimizing Fertility Management in Malting Barley and Hard Red Spring Wheat, presented by Dr. Brad Brown, UI Parma R&E Center.
To join this webinar from your own computer, please log onto: https://connect.cals.uidaho.edu/barley/
Kelly L Olson, Administrator
Idaho Barley Commission
208-334-2090
Fax: 208-334-2335
kolson@idahobarley.org
No-tillage and Strip Tillage Meeting
All Crops All Locations
Posted on: January 25, 2011 by Steve Norberg
2nd Annual Strip Tillage and No-till Drilling Conference
February 10, 2011 at 9:00 AM, Four Rivers Cultural Center, Ontario, OR
Please RSVP by February 4 at noon by calling the Malheur Extension Office at 541-881-1417
Put on by Oregon State University
Agenda
9:00 AM Welcome - Steve Norberg, OSU, Field Crops and Watershed Mgt.
9:05 AM Why Consider Strip Tillage or No-till Drilling? - Steve Norberg, OSU
9:30 AM How to Manage Soil Temperature in High Residue Conditions – Andy McGuire,
Washington State University Extension
10:00 AM Strip Till and No-till Machinery and Lesson’s Learned– Steve Norberg
10:30 AM Break
10:45 AM Machinery for Planting in High Residue Conditions-Andy McGuire
11:30 AM Farmer Experience with Strip Tillage – Kenneth Jensen
11:50 AM Use of Oregon's Business Energy Tax Credit for No-till Drills- Mark Wettstein -
producer
12:00 PM Lunch (Courtesy of Sponsors)
12:45PM Setting of No-till drills – Steve Norberg and others
1:00 PM Farmer Experiences with No-till Drills - Jeremy Chamberlain, Doug Stipe, Gary
Westcott and John Fabricius
2:00 PM Farmer Experiences with Strip Tillage –Bill Romans, Ron Smith and Rob
Wagstaff
3:00 PM Adjourn
Cereal Schools for Southeast Idaho, Feb 2-4, 2011
Small Grains All Locations
Posted on: January 17, 2011 by Juliet Marshall
Cereal School Agenda will include variety updates, insect and disease information, and fertility management for high protein grain. Hope to see you there!
Pocatello Feb 2 Red Lion Inn - contact Reed Findlay 236-7310
Idaho Falls Feb 3 Red Lion Inn - contact Wayne Jones 529-1390
Ashton Feb 3 Trails Inn - contact Lance Ellis 624-3102
Preston Feb 4 Robinson Building, Preston Fair grounds - contact Stuart Parkinson 852-1097
2011 Snake River Sugarbeet School
Announcements All Locations
Posted on: January 5, 2011 by Jerry Neufeld
Click on the pdf's below for more information about the 2011 Snake River Sugarbeet School which is January 13 and 14 at the College of Southern Idaho in Twin Falls.
Soybean Meeting
Announcements All Locations
Posted on: January 3, 2011 by Steve Norberg
How Soybeans will Help Increase Profits For Dairies and
Help Control Yellow Nutsedge Control in Onions
If you are struggling with either high protein costs for soybean meal or weed control in your onions, then do not miss this meeting.
2010 Soybean Meeting (Oregon State University)
January 6, 2011 at 9:00 AM, Malheur Extension Office
710 SW 5th Ave., Ontario, OR 97914
Please RSVP to the Extension Office by January 5 at 541-881-1417.
Agenda
9:00 AM Welcome - Steve Norberg, OSU Field Crops and Watershed Mgt.
9:05 AM Why Onion Farmers Should Be Especially Interested in Growing Soybeans- Steve Norberg, OSU
9:20AM Market Development of Soybeans In Dairy - Lorne Clapson – Producer
9:50 AM Feeding Soybeans from a Nutritionist Perspective - Larry Burrows, Cargill Nutritionist
10:30 AM Break
10:45 AM How to Grow Soybeans and Soybean Variety Trials – Steve Norberg, OSU
11:45 AM First Year in Marketing Soybeans, (Tentative) Jon Sperl, Pendleton Grain Growers
12:00 AM Lunch – Courtesy of Monsanto, Syngenta, and Landview Fertilizer
1:00 PM Experiences Growing Soybeans in the Pacific Northwest- Panel
2:00 AM Seed Availability in Soybeans – TBA
2:15PM Adjourn
Outback Steakhouse Gift Certificate Winners
All Crops All Locations
Posted on: December 17, 2010 by Jerry Neufeld
Thank you to everyone for filling out a pest alert survey for 2010. The winners of the Outback Steakhouse Gift Certificates sere Dale Buzzell, Tony Noe and Terry Clinton. Certificates are going in the mail today.
Jerry Neufeld
Outback Steakhouse Gift Certificate Winners
All Crops All Locations
Posted on: December 17, 2010 by Jerry Neufeld
Thank you to everyone for filling out a pest alert survey for 2010. The winners of the Outback Steakhouse Gift Certificates sere Dale Buzzell, Tony Noe and Terry Clinton. Certificates are going in the mail today.
Jerry Neufeld
Organic Marketing Conference
Announcements All Locations
Posted on: November 18, 2010 by Nora Olsen
Organic Marketing Conference
Tuesday, December 7 to Wednesday, December 8
Twin Falls, Idaho
This two-day conference on marketing organic farm products, including vegetables, grains, forages, milk and livestock, will feature national, regional, and Idaho speakers. The second day includes trainings on developing an effective marketing plan, social media, a mock certified organic inspection, GAP audit, ISDA's 2011 organic promotion, and a series on financial management tools. Full conference details are available at www.pesticide.org.
$50/person for both days; $35/person for one day
Register by November 26 at www.pesticide.org or by contacting Jennifer Miller at jmiller@pesticide.org or 208-850-6504
2010 Idaho Association of Plant Protection Meeting
All Crops All Locations
Posted on: November 5, 2010 by Nora Olsen
The annual meeting for the Idaho Association of Plant Protection will be held at the Best Western Sawtooth Inn and Suites in Jerome, ID on the afternoon of Nov 8 (12:30 to 5:30 pm)and the morning (8 am to noon) of Nov 9. The meeting program has multiple topics on potatoes, sugar beets, grain and others. There will be 3 CCA (PM) and 3 ISDA pesticide credits available for the Nov 8 session and another 3 CCA (PM) and 3 ISDA pesticide credits available for the Nov 9 session. The registration cost for the meeting is $15 per person.
ISDA Pesticide Disposal Program
Announcements All Locations
Posted on: September 9, 2010 by Jerry Neufeld
Click on the PDF below for information about Idaho State Department of Agriculture’s Pesticide Disposal Program next week in eastern Idaho and the Magic Valley.
Treasure Valley Soybean Tour
Announcements All Locations
Posted on: August 20, 2010 by Steve Norberg
Treasure Valley Soybean Tour
Tentative Agenda
10 AM – 3:00 PM, August 24, 2010, Lunch Provided
Tour will start from the just north of Willow Creek at the junction of Hwy. 26 and 10th Ave. East.
10:00 AM Meet at Jerry Erstrom’s Soybean Field - just north of Willow Creek at the junction of Hwy. 26 and 10th Ave. East.
10:20 AM Leave Erstrom’s for Dave Patchett’s Organic Soybean Field
10:50 AM Arrive Dave Patchett’s Organic Soybean Field
11:10 AM Leave Patchett’s for Skyline Farm
11:30 AM Arrive Skyline Farm
11:50 AM Leave for Ontario (Malheur Extension Office)
12:10 PM Arrive Malheur Extension Office for Lunch Sponsored by Asgrow, Dekalb (Dan Rongen) and Croplan Genetics (Rick Spiecher)
12:30 PM Pendleton Grain Growers Interest in Soybeans (Not Confirmed Yet), Jon Sperl,
12:50 PM Leave for Parma R & E Center to look at Relay Cropping and Varieties
1:20 PM Leave for Syngenta R & E Center
1:50 PM Arrive Syngenta R & E Center (Ten miles north of Caldwell on
2:10 PM Tour Over and Drive Home
Organic Field Day Offered
Announcements All Locations
Posted on: July 20, 2010 by Nora Olsen
Organic Field Day Offered
M&M Heath Farms, Buhl, Idaho
Wednesday, July 28
Registration at 9 am. Tour from 9:30 to 12:30 pm, followed by lunch.
Cost is $15
Mike Heath of M&M Heath Farms in Buhl, Idaho and Jennifer Miller with the Northwest Coalition for Alternatives to Pesticides invite you to attend an organic field day on Wednesday, July 28.
Mike Heath has been farming organically for 28 years and currently runs 450 acres of certified organic production. He produces dry beans, grains, potatoes, hay, tomatoes, winter and summer squash, and a variety of other vegetables, as well as livestock.
Heath will describe his rotation, organic fertility management, and pest and weed management. He will provide a tour of his various potato varieties, dry beans, Austrian winter pea seed crop, new alfalfa stand, and squash, as well as his planters, cultivators and other equipment.
Last year, Heath participated in the Farm Bill EQIP-Organic Initiative through the Natural Resources Conservation Service. Mike Cothern from the Natural Resources Conservation Service in Twin Falls will be on-hand to discuss this program and others available to organic farmers.
The field day will also include updates from University of Idaho researchers on organic disease management, fertility management, and the Idaho Foundation Seed Program.
Registration starts at 9 am, with the tour from 9:30 am to 12:30 pm. Lunch will be served. The cost is $15. RSVP with Jennifer Miller by Friday, July 23 at jmiller@pesticide.org or 208-850-6504.
Driving directions are available at www.pesticide.org.
Powdery Mildew in Sugarbeets
All Crops All Locations
Powdery Mildew
Posted on: July 14, 2010 by Jerry Neufeld
As of today (July 14) powdery mildew has still not been found in Treasure Valley sugarbeets.
Confirmed late blight in Washingon
Potato All Locations
Late Blight
Posted on: June 25, 2010 by Jerry Neufeld
Below is information on Late Blight from Philip B. Hamm, Supt at the OSU Hermiston Agricultural Research & Extension Center.
Late blight was confirmed in the Columbia Basin today at two locations; south of Kennewick (Horse Heaven Hills) and near Burbank WA. There are few additional details at this time. Frankly, I am surprised that we haven’t seen this disease problem earlier, given the favorable weather conditions. We expect there are other infections waiting to be found….Keep scouting and bring any suspects in to the lab for confirmation.
Weekly applications of protectant fungicides (manzate and chlorothalonil) are recommended through July. Use of Omega for white mold control provides protection against late blight. Use of a phosphorus acid product may be beneficial for protecting tubers against late blight and pink rot.
Keep checking the late blight hot lines in both Oregon and Washington for further details.
The Oregon Hot Line is 1-800 705 3377
Washington 1 (800)-984-7400
Please let me know if you have any questions.
Phil
Philip B. Hamm
Professor of Plant Pathology &
Superintendent
Hermiston Agricultural Research & Extension Center
Oregon State University
2121 South First Street
Hermiston OR 97838
Phone: 541 567 8321
Stripe rust in winter wheat
Small Grains All Locations
Stripe rust
Posted on: June 16, 2010 by Juliet Windes
Stripe rust has been reported in southern Idaho on Moreland hard red winter wheat south of Burley. (Report was confirmed June 16, 2010.) Scout your winter and spring wheat for stripe rust starting immediately. Varieties with "High temperature adult plant resistance" (such as the soft white spring wheat Alturas) may be vulnerable to stripe rust as the temperatures have NOT been warm enough to activate this type of resistance!Current weather continues to be extremely conducive to the spread of this disease. Refer to the Southern and Eastern Idaho Cereals Extension website for more information.
Small Grains Disease becoming widespread
Small Grains All Locations
Pythium species
Posted on: June 16, 2010 by Juliet Windes
I have examined several wheat and barley samples lately that have had no obvious stem base lesions, but have had dying of lower leaves and severe root rot. I could find no runner hyphae typical of take–all, no stem rot lesions similar to that of Fusarium, no eyespot lesions of Tapesia (formerly Pseudocercosporella).
These have all had (sudden onset of) yellowing symptoms on the leaves, chlorosis and poor overall plant health. Some leaf symptoms look typical of virus infections. Some root systems exhibit extreme damage, with very little to no viable roots left.
I believe these plants are suffering from Pythium root rot, also called browning root rot. Please see the following internet documents as references:
http://ipm.illinois.edu/bulletin/article.php?id=970
http://www.ipm.illinois.edu/diseases/rpds/113.pdf
There is very little we can do at this point to control these infections. Seed treatments with metalaxyl-based fungicides will help control or reduce seedling infections, but will not be effective at this late stage. The disease will be exacerbated with over-watering! If the weather comes off hot and dry, then there will NOT be sufficient root mass to support the plants or grain fill. Stressed plants will also exhibit foliar symptoms of other disease organisms: for example barley scald and spot blotch will take advantage of weakened barley.
There are no resistant varieties.
Late Blight Information
Potato All Locations
Late Blight
Posted on: June 14, 2010 by Jerry Neufeld
A new feature at the USPESRT.ORG website (http://uspest.org/wea) features late blight risk maps that are updated frequently. For example, if you go to http://uspest.org/risk/tom_pot_map?state=ID you will see the Tomato-Potato Late Blight Risk map for Idaho. If you click on a pin, it brings up the full model for that weather station. For example, if you click on http://uspest.org/risk/models?sta=PMAI&mdl=tplb
it will bring up a page with specific information for Parma, ID. The late blight graph (top left of page) shows the change in infection risk due to temperature and moisture over the default period (past 14 days + forecasted 7 days).
If sufficient inoculum is nearby, infection is very likely if the risk index exceeds 4. This is the Smith version of the tomato-potato late blight risk model and is documented at http://uspest.org/npdn/riskdoc.html#TPLB.
Below is an explanation of the risk index:
1 = conditions are favorable for fungal spore formation if there are lesions on plants in the area,
3 = Conditions are favorable for infection if there is inoculum (spores) in the area.
4= The latent period following infection is completed, you will see the lesions of the new infections in the field.
These models reflect only weather induced sporulation and infection conditions, not whether inoculum is actually present in the area. Scout regularly to determine if there is inoculum in the area. As with all weather driven pest models, use with caution and be sure to verify the validity of weather data inputs for all sites. Plants are the most vulnerable to late blight after canopy
closure. Site specific irrigation events are not reflected in this weather data and may result in different risk levels.
Carla Thomas, Plant Pathologist with UC Davis provided this information.
Stripe rust possible
Small Grains All Locations
Stripe rust
Posted on: June 11, 2010 by Juliet Windes
While a small amount of stripe rust in wheat was confirmed by Brad Brown in southwest Idaho, it has not been confirmed in southeast Idaho and Magic Valley YET. However, flecking symptoms similar to early infection were seen in Aberdeen in Moreland hard red winter wheat. Due to extremely conducive weather conditions and widespread infection in Washington state, it is highly recommended that consultants and growers scout for stripe rust in all wheat. The wet and cool weather has prevented the resistance in varieties with High Temperature Adult Plant resistance from being activated, so varieties such as Alturas may be showing susceptible reactions. Consider spraying (especially susceptible varieties) in advance of infection. Please report stripe rust infections to Juliet Windes (208-529-8376) and / or Brad Brown (208-722-6701 ext 216). Additional information and pictures can be found at http://www.ag.uidaho.edu/scseidaho
Late Blight Forecast
Potato All Locations
Late Blight
Posted on: June 9, 2010 by Jeff Miller
A forecast for predicting the occurrence of late blight was developed at the University of Idaho in 2004 by Donna Henderson and Jeff Miller. Many different weather variables were analyzed for data collected from 1995 to 2004 in an attempt to relate outbreaks of late blight with weather. The most efficient prediction of late blight was related to the number of late blight favorable periods and the amount of rain in April and May. A favorable period was any hour the air temperature was between 50 and 80 F and the relative humidity was above 80%. While the model was not perfect, it was accurate about 80% of the time in predicting the occurrence of late blight.
Forecasts in 2010 were generated using data from Parma, Twin Falls, Rupert, Aberdeen, Fort Hall, and Rexburg. Based on the forecast, late blight is expected in Twin Falls, Rupert, Aberdeen, and Fort Hall. Any actual outbreak of late blight will be influenced by fungicide spray programs, presence of potential inoculum sources, and weather later in the season.
Our current recommendation is to plan on spraying at row closure and then continue on a 10-14 day schedule. This recommendation may be modified depending on subsequent weather patterns.
A useful discussion of fungicides effective against late blight can be found at following link: http://www.millerresearch.com/reports/Overview_of_Fungicides_for_Late_Blight.pdf
The evidence indicates that the late blight outbreak in southern Idaho in 2009 came from diseased tomatoes. We also have evidence that this may have happened in western Idaho in 2005. In 2009, a severe outbreak of late blight in the Northeast U.S. was linked to transplanted diseased tomatoes. If you are buying tomato transplants from a garden center in your area, keep an eye out for sick-looking plants. If you find any suspicious lesions, please contact us or an extension specialist from the University of Idaho for confirmation of late blight. Dr. Phillip Wharton of the University of Idaho has authored a publication on the impact of tomatoes with respect to potato late blight and it is included on a previous post. For more information on late blight in Idaho you can call the University of Idaho late blight hotline (1-800-791-7195). Or for instant updates on the status of late blight and other diseases in the state you can sign up for SMS text message notifications by texting “follow potatodiseases” to 40404.
Late blight was only confirmed in one area in southern Idaho last year. There are no cull piles or any apparent overwintering sources for the pathogen in the 2009 affected area. Potato seed can also be a source.
» http://www.millerresearch.com/reports/Overview_of_Fungicides_for_Late_Blight.pdf
Late Blight Information
Announcements All Locations
Late Blight
Posted on: June 9, 2010 by Jerry Neufeld
Click on the pdf below for additional information from UI Plant Pathologist Dr. Phillip Wharton about Early and Late Blight in potatoes.
Late Blight Leaflet
Announcements All Locations
Late Blight
Posted on: June 9, 2010 by Jerry Neufeld
Tomato and Potato Late Blight Alert Leaflet
In 2009, many gardeners and commercial farmers in the Northeast saw their entire crop of lovingly cared for tomatoes overcome with late blight and rot on the vine, while the plants withered up and died. Late blight is devastating on both tomato and potato plants and once the disease has taken hold of the plant there is very little that can be done to halt its progress. Last year the disease is thought to have started in tomato transplants and then spread from diseased tomato plants to healthy tomato and potato plants in surrounding gardens and commercial fields. Late blight can infect and kill plants within 10 days and the spores of pathogen can be carried in the air. The disease outbreaks that occurred in the Northeast last year were mainly due to a new strain of the late blight pathogen called US22. There was also an outbreak of late blight reported on potatoes in southeastern Idaho last summer. Fortunately, it was limited to only a couple of fields. However, what is worrying is that it was identified as being caused by the new US22 strain of late blight, suggesting that it also came from infected tomato plants. There were no confirmed reports last year in Idaho of late blight on tomatoes, but the presence of the US22 isolate suggest that late blight was probably more widespread in southeastern Idaho than reported. Idaho potato growers were extremely lucky last year. In the Northeast, the US22 isolate spread quickly from tomatoes to potatoes and caused widespread losses in commercial potato crops. This year there have already been reports of late blight found on tomatoes bought in a Walmart store in Kentucky, and those plants were identified as being produced in Michigan. With all the unseasonably wet weather we have been having in Idaho in the past few weeks it is important that people remain vigilant for signs of late blight in tomatoes and potatoes. The attached leaflet (click on the pdf below) is designed to help homeowners and growers identify diseased plants and informs them of what steps they can take if they think they have late blight on their plants.
For more information on late blight in Idaho you can call the University of Idaho late blight hotline (1-800-791-7195). Or for instant updates on the status of late blight and other diseases in Idaho you can follow us on Twitter at “http://twitter.com/potatodiseases” or sign up for SMS text message notifications by texting “follow potatodiseases” to 40404.
Updated UI GAP Audit Manual on website
Potato All Locations
GAP Audit
Posted on: April 2, 2010 by Nora Olsen
The University of Idaho has updated the previously available Potato GAP Audit Organizational Manual. The UI manual is designed to simplify the collection of information necessary to pass the USDA GAP Audit and is now available for download at the UI Kimberly R&E Potato Storage website: http://www.kimberly.uidaho.edu/potatoes/gap.htm.
In November of 2009 the USDA replaced the May 11, 2007 version of their Good Agricultural Practices (GAP) & Good Handling Practices (GHP) Audit Verification Checklist. The new version has three major changes: 1) new identification of records, policy or documentation requirements, 2) new numbering, wording or point values for previously asked questions, and 3) the addition of new questions and traceability questions were added to each section. The updated UI GAP Audit Organizational Manual incorporated these changes into the newest version and this manual will be useful in preparing for the 2010 GAP Audit.
Strip Tillage and No-till Drilling Under Sprinkler Irrigatio
Announcements All Locations
Posted on: February 11, 2010 by Steve Norberg
Strip Tillage and No-till Drilling Under Sprinkler Irrigation Meeting
February 16, 2009 at 9:00 AM, Four Rivers Cultural Center, Ontario, OR
Please RSVP to the Extension Office by February 12 at 541-881-1417.
Tentative Agenda
9:00 AM Welcome - Steve Norberg, OSU, Field Crops and Watershed Mgt.
9:05 AM Why Consider Strip Tillage or No-till Drilling? - Steve Norberg, OSU
9:30 AM How to Manage Soil Temperature in High Residue Conditions – Andy McGuire, Washington State University Extension
10:00 AM Strip Till and No till Machinery and Lesson’s Learned In Corn – Steve Norberg
10:45 AM Machinery for Planting in High Residue Conditions-Andy McGuire
11:30 AM Strip Tillage with Sugarbeets - Robert Downard, Amalgamated Field Man from Twin Falls District
12:00 Lunch (Courtesy of Sponsors)
1:00 PM Idaho, Natural Resource Conservation Programs for Strip Tillage and Reduced Tillage – Marlon Winger, State Agronomist
1:30 PM Farmer Experiences with No-till Drills - Jerry Stewart and Ryan Olsen
2:15PM Farmer Experiences with Strip Tillage – Kenneth Jensen, Rob Wagstaff, Tom Gregg, Ron Smith and Monte Heid
3:30 PM Adjourn
» http://extension.oregonstate.edu/malheur/agriculture/watershed-management
Strip Tillage and No-till Drilling Under Sprinkler Irrigatio
Announcements All Locations
Posted on: February 11, 2010 by Steve Norberg
Strip Tillage and No-till Drilling Under Sprinkler Irrigation Meeting
February 16, 2009 at 9:00 AM, Four Rivers Cultural Center, Ontario, OR
Please RSVP to the Extension Office by February 12 at 541-881-1417.
Tentative Agenda
9:00 AM Welcome - Steve Norberg, OSU, Field Crops and Watershed Mgt.
9:05 AM Why Consider Strip Tillage or No-till Drilling? - Steve Norberg, OSU
9:30 AM How to Manage Soil Temperature in High Residue Conditions – Andy McGuire, Washington State University Extension
10:00 AM Strip Till and No till Machinery and Lesson’s Learned In Corn – Steve Norberg
10:45 AM Machinery for Planting in High Residue Conditions-Andy McGuire
11:30 AM Strip Tillage with Sugarbeets - Robert Downard, Amalgamated Field Man from Twin Falls District
12:00 Lunch (Courtesy of Sponsors)
1:00 PM Idaho, Natural Resource Conservation Programs for Strip Tillage and Reduced Tillage – Marlon Winger, State Agronomist
1:30 PM Farmer Experiences with No-till Drills - Jerry Stewart and Ryan Olsen
2:15PM Farmer Experiences with Strip Tillage – Kenneth Jensen, Rob Wagstaff, Tom Gregg, Ron Smith and Monte Heid
3:30 PM Adjourn
Treasure Valley Bean School
Announcements All Locations
Posted on: January 12, 2010 by Jerry Neufeld
Click on the link below for information about the Treasure Valley Bean School on February 18, 2010 in Caldwell, ID.
Spanish Pesticide Safety Training
Announcements All Locations
Posted on: January 12, 2010 by Jerry Neufeld
Click on the link below for information about a Spanish Pesticide Safety Training workshop on February, 11, 2010 in Weiser, ID.
Seed Production of Native Grasses and Forbs
Announcements All Locations
Posted on: January 12, 2010 by Jerry Neufeld
Click on the link below for information about a workshop on “Seed Production of Native Grasses and Forbs” on February, 23, 2010 in Ontario, OR.
2010 Snake River Sugarbeet School
Announcements All Locations
Posted on: December 15, 2009 by Jerry Neufeld
Click on the pdf files below for information about the 2010 Snake River Sugarbeet School in Twin Falls on January 8, 2010.
Annual Pest Alert Survey
Announcements All Locations
Posted on: December 14, 2009 by Jerry Neufeld
Thanks to everyone that recently completed an evaluation for the Pest Alert Network.
The winners of the $75 gift certificates to the Outback Steakhouse are Shaun Blaser, Brandon Vining and Chan Cabalo.
I will put the prizes in the mail today.
Updated version of USDA GAP Audit
Potato All Locations
Posted on: November 18, 2009 by Nora Olsen
The USDA updated the Good Agricultural Practices (GAP) and Good Handling Practices (GHP) Audit Verification Checklist on November 9, 2009.
See www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELPRDC5050869 to view the latest version of the audit. (Cut and paste the link into your browser.)
There are substantial changes to the audit that will be necessary to incorporate into your on-farm food safety program. All current University of Idaho GAP Organizational Manuals are no longer valid and updates will be required. These updates are currently under construction and will be posted at www.kimberly.uidaho.edu/potatoes/gap.htm
Other manuals or paperwork you use will need to be updated to include documentation to address the latest version of the GAP Audit.
Thank you for your visit
All Crops All Locations
Test Pest
Posted on: October 27, 2009 by PNWPestAlert Admin
Thank you for visiting the PNWPestAlert.net Website!
Please check back soon for new alerts, or Subscribe to receive new alerts as they are posted!
Public Notice Hearing
All Crops All Locations
Posted on: September 8, 2009 by Tony McCammon
Public Notice Hearing:
As part of the enhanced review, the University of Idaho is assessing the cost benefit, viability, and impact of its statewide Research and Extension operation. Simultaneously, the University of Idaho is further engaging the agricultural industry, other partners and the general public in this dialogue to ensure the success of all of our Research and Extension efforts:
Please provide your comments and or concerns:
Caldwell / Parma
September 10, 2009
Caldwell Complex, 1904 E. Chicago Street, Conference Center
6:00 p.m.
http://www.extension.uidaho.edu/newsDetail.asp?ID=1078
________________________________________
Idaho Falls
September 8, 2009
ISU Campus, 1770 Science Center Drive, CHE Bldg., room #211
6:00 p.m.
________________________________________
Twin Falls
September 9, 2009
CSI Campus, 315 Falls Ave., Taylor Bldg., room #277
6:00 p.m.
________________________________________
Sandpoint
September 15, 2009
Panhandle State Bank Community Room, 414 Church Street
6:00 p.m.
http://www.extension.uidaho.edu/newsDetail.asp?ID=1078
Additional Resources and links to U of I documents related to the PARMA Research & Extension Facility:
http://sitecore.uidaho.edu/cals/listeningsessions/resources.aspx
U of Idaho Links to CALS Research & Extension Review Book
Budget figures for fiscal year that were included in the April 2009 Research and Extension Review book we based on the most currently available information at that time. Because fourth quarter FY09 data was not available, these figures differ from the final FY09 budget figures.
http://sitecore.uidaho.edu/cals/listeningsessions/materials/book.aspx
Late blight found in southern Idaho
Potato All Locations
Posted on: September 1, 2009 by
Late blight has been confirmed in multiple fields in southern Idaho. The late blight is not severe and with the current weather the threat of spread is low. The source of the late blight is not known at this time.
The late blight forecast was positive for all of southern Idaho this year. Last year it is likely that late blight was more wide-spread than was reported based on suspected late blight tubers in storage. Fields with healthy, green vines should be scouted thoroughly. Scouting should be concentrated in areas of the field that remain wet the longest, such as the center tower of pivots, along mainlines, in low-lying areas, and near windbreaks and shaded areas.
Ranger Russet tubers are especially susceptible to infection, so fungicide applications may be necessary especially if the vines will not be killed for a few more weeks. Use fungicides labeled for late blight. Some early blight fungicides (such as Endura) are not effective against late blight. If late blight is confirmed in a field and the tubers are destined for long term storage, tubers can be treated with phosphorous acid to decrease the risk of storage rot.
Organic Field Day
All Crops All Locations
Posted on: August 7, 2009 by Nora Olsen
An organic field day will be held at King’s Crown Organic Farm on Thursday, August 13. Organic farmer Nate Jones will provide a tour of his organic potatoes, onions, winter squash, sweet corn, and dry beans. Nate has 22 years of experience as an organic farmer.
Mir Seyedbagheri, extension educator for Elmore County with the University of Idaho, and Oliver Neher, extension plant pathologist with the University of Idaho, will share their research on organic fertility management and biological disease control, respectively. Karen Strickler, pollination expert and market gardener with Pollinator Paradise, will share results from a survey of squash bee distribution. In addition, Don Halverson from Organic Acres Dairy in Rupert will describe his experience bottling his farm’s organic milk.
King’s Crown Organic Farm
Thursday, August 13
King Hill - Glenns Ferry
Registration at 9 a.m. Tour from 9:30 to lunch
Registration is $10, lunch included
Please RSVP by August 10 at 208-850-6504 or jmiller@pesticide.org
Directions to field day: 2240 E Maple Dr., King Hill
From I-84, take exit 121 and travel south.
Turn east on Frontage Rd and travel ½ mile, through railroad under pass.
Turn east at stop sign onto Pasadena Valley Rd, travel almost ½ mile across Snake River.
Turn south on Rosevear and travel ½ mile.
Turn east on Maple Dr and drive up the lane.
Pomology Fruit Field Day
Announcements All Locations
Posted on: August 5, 2009 by Jerry Neufeld
Dr. Essie Fallahi from the UI Parma R and E Center is hosting the Pomology Program Annual Fruit Field Day on Thursday September 3, 2009 starting at 8:30 am. Click on the pdf file below for more details.
Malheur Experiment Station Annual Field Day
Announcements All Locations
Posted on: July 7, 2009 by Jerry Neufeld
YOU ARE INVITED TO THE
Malheur Experiment Station
Annual Field Day and FARM FESTIVAL
Presented by the OSU Malheur Experiment Station,
Ontario Chamber of Commerce,
KSRV and others
July 8, 2009 from 8:30 AM - 1:00 PM
Complimentary lunch will be served.
Please reserve lunch by calling Janet Jones
541) 889-2174
Or emailing her at janet.jones@oregonstate.edu
Malheur Experiment Station
595 Onion Ave.
Ontario, OR 97914
Late blight NOT confirmed at this time
Potato All Locations
Posted on: June 30, 2009 by Jeff Miller
Late blight has NOT been confirmed at this time in southern Idaho. Samples that were submitted for identification turned out to be gray mold (caused by Botrytis). At this time, rumors of late blight in Elmore County and in the Rupert/Burley area have not been confirmed.
The weather has been favorable for late blight development, however, and it is recommended that any suspicious lesions be evaluated by trained personnel.
No confirmed late blight but storms increase chances of dise
All Crops All Locations
Posted on: June 30, 2009 by Phill Wharton
Storms increase chances of late blight disease outbreak
By Phill Wharton
Even though late blight has not been found in Idaho so far this year, the thunderstorms that were widespread throughout the south of the state over the past weekend (June 20 and 21) and the heavy rain that we have had in the past three weeks created ideal conditions for potential late blight outbreaks in many locations. Late bight outbreaks are favored by wet weather with moderate temperatures (59 – 78°F), high humidity and frequent rainfall.
With the confirmed findings of late blight in 2008 and these conditions being prevalent in large areas of the state, the probability for the occurrence of outbreaks in manly locations throughout the state is high. Whether a late blight outbreak occurs or not depends on the presence of the late blight pathogen. In the spring, the late blight pathogen can be transmitted from infected tubers in cull piles or volunteers to potato foliage by airborne spores. Infected seed potatoes are also an important source of disease. Some infected tubers may rot in the soil before emergence, and not every plant that emerges from an infected tuber will contract late blight. Spores may be spread from infected plants in one field to healthy plants in surrounding fields by wind, splashed rain, mechanical transport and animals.
With the increased risk for late blight, efforts must be made to monitor crops closely for the incidence of disease. Particularly after plants close across the rows, look for late blight in the lower portions of the plant where the foliage stays wet longer. Scouting should be concentrated in areas of the field most likely to remain wet for the longest period of time, such as the center tower of pivot irrigation system and areas missed by fungicide applicators such as the edges of fields. Low spots where soil moisture is highest and parts of the field shaded by windbreaks are examples of areas where scouting should be intensified. If a field is thought to have late blight, care should be taken not to spread the disease from field to field when scouting. Disposable pants and rubber boots that can be washed after leaving a field should be worn if late blight is suspected or was found in a field. Late blight inoculum can also be spread from field to field on equipment, so this should also be washed after leaving the field.
As the risk of disease becomes greater, crop monitoring should be intensified. Late blight lesions may be confused with those of early blight (Alternaria solani) and gray mold (Botrytis cinerea) which are less severe diseases, thus it is important that an accurate identification of the disease symptoms is made and late blight is confirmed by a qualified diagnostician. If you think that you have late blight in your field you should contact the University of Idaho at 208 397 4181 for instructions on how to submit a disease sample, or contact your local crop consultant. With optimal weather conditions for a potential late blight outbreak, all growing regions in Idaho should be considered at risk with regard to the disease. A protectant spray should be applied before row closure, followed by another application 10 to 14 days later and then make fungicide applications based on current environmental conditions. Programs based on chlorothalonil (e.g. Bravo WS, Echo 90 DF, Equus DF) or EBDC-containing products (e.g. Dithane, Manzate, Manex, Penncozeb) will reduce the risk of disease development. Consult your local advisor for appropriate rates and additional combinations. If the disease is confirmed, interventive chemical control measures should be used.
To keep updated on the threat of late blight, call the late blight hot line at 800-791-7195.
Stripe Rust found in Winter Wheat
Small Grains All Locations
Posted on: June 25, 2009 by Juliet Windes
Active stripe rust was found in Idaho on Weston hard red winter wheat in a commercial field in the American Falls area on June 22, 2009. Weston was in milk stage, and stripe rust was found throughout the plant canopy. Infection was not severe, and was only 5% in severity and 8-10% incidence throughout the field. Stripe rust was found in Minidoka County north of Burley in Declo hard red winter wheat, and reported in northern Utah in winter wheat.
Stripe rust was also found on lower leaves of Moreland hard red winter wheat in breeding plots. Pustules were not actively sporulating, and Moreland was in early grain fill. (This was the Neeley area south west of American Falls.)
Most winter wheat is past the window of allowable fungicide application. Spring wheat varies in growth stages (depending upon elevation) from tillering to late boot. Excellent conditions exist for wheat production, especially in dryland production, where in some areas record-breaking rainfall has resulted in yield potential not seen in decades. Cold temperatures and frequent heavy rainfall has provided excellent conditions for the spread of stripe rust, but I have yet to see stripe rust in spring wheat or severe infections in winter wheat. NOW is the time to scout spring wheat fields for active pustules. Fungicide applications (up to labeled rate and growth stage) will control stripe rust. Always check labels and follow label directions. Additional information for control and pictures of stripe rust are available on our website at http://www.ag.uidaho.edu/scseidaho/ then click on "Disease Information" and then "Stripe Rust Information."
I have seen no stem rust or leaf rust. Other diseases found include Pythium and eyespot (Pseudocercosporella). Black chaff in wheat and bacterial stripe in barley have caused problems due to sleet and hail storms, and barley scald has progressed to the flag leaf in some commercial barley production fields in the Magic Valley around Twin Falls.
Juliet Windes
Juliet Marshall Windes
Cereals Cropping Systems, Agronomy and Pathology Assistant Professor
1776 Science Center Drive Suite 205
Idaho Falls, ID 83402-1575
208-529-8376 office
208-390-4859 mobile
208-522-2954 FAX
Organic production field day
All Crops All Locations
Posted on: June 18, 2009 by Nora Olsen
The University of Idaho will host an organic field day at the Kimberly R&E Center on Tuesday, July 21 at 9:30 a.m. Eleven acres of the research station were certified organic in 2008. Several researchers are now studying various aspects of organic production at this site. This season the rotation includes organic winter wheat, dry beans, and potatoes. The field day will feature the following topics:
* Transition of the organic research site
* Organic nutrient management and sources
* Organic weed management studies, including cultivation methods
* Organic disease management, including microbial control for early blight in potatoes
* Organic potato variety trial and storage research
The cost is $10 and includes lunch.
Please RSVP with Jen Miller at 850-6504 or jmiller@pesticide.org.
The Northwest Coalition for Alternatives to Pesticides and Three Rivers RC&D are helping to organize this field day. These organizations are encouraging car pooling from the Boise and Pocatello areas.
To car pool from Boise, contact Jen Miller at 850-6504 or jmiller@pesticide.org.
To car pool from Pocatello, contact Paula Jones at 237-4628 ext 104 or Paula.Jones@id.usda.gov.
Directions to Kimberly R&E Center: 3806 North 3600 East
From I-84, take exit 182 and travel south on Hwy. 50. Turn north at mile marker 1 on 3600 E. take first right and park at Potato Storage Facility.
Parma Small Grain Tour Friday
All Crops All Locations
Posted on: June 18, 2009 by Steve Norberg
Parma Small Grains Tour
A tour of the small grains research at the Parma R & E Center near Parma is scheduled for June 19, 2009. We will register at 9 AM and start the tour at 9:20 – 9:30. A lunch will be served at the end of the tour for those attending Wheat and Barley Variety Performance.
Is there a new variety in the pipeline for you? Seed banded N for winter wheat. Do new slow release N technologies provide any advantage for banding fertilizer with seed? Increasing wheat protein with late season N. Can new enhanced N fertilizers improve topdressed or foliar N availability for protein enhancement ? Relay cropping in barley. Is it feasible to plant oilseeds or even corn into standing barley for harvest in the same season?
Late blight forecast for southern Idaho for 2009
Potato All Locations
Posted on: June 12, 2009 by Jeff Miller
Our cool, wet spring has created an environment favorable for the development of late blight. A prediction model developed at the University of Idaho by Henderson et al. indicates that the likelihood of late blight development is relatively high. The forecast value is highest in the Fort Hall area and lowest in Parma. The actual occurrence of late blight and the date of first appearance will be affected by subsequent weather and fungicide application patterns.
The forecast in 2008 was also relatively high early in the season, but hot, dry weather was likely responsible for the limited development of late blight. It is critical to scout fields. Any area of the field where plant leaves and stems stay wet for extended periods of time (e.g. near the center points of pivots, irrigation overlaps, along mainlines, near windbreaks) should be scouted intensely. The use of a protectant fungicide is recommended prior to row closure.
A full discussion of different fungicides labeled for late blight control, along with information on application method and frequency is attached here and also available at:
http://www.millerresearch.com/reports/Overview_of_Fungicides_for_Late_Blight.pdf
Early blight resistance management
Potato All Locations
Posted on: June 11, 2009 by William H. Bohl
Early blight, caused by Alternaria solani, is a very common disease of potato found in most potato-growing areas in Idaho. Although it occurs annually to some degree in most production areas, the timing of its appearance and the rate of disease progress help determine the impact on the potato crop. Though losses rarely exceed 20 percent, if left uncontrolled, the disease can be very destructive. Since 1999, the persistent and intensive use of azoxystrobin and other QoI fungicides alternated with chlorothalonil on commercially grown potato crops in the Midwest and throughout the United States have increased the selection pressure for the development of QoI fungicide resistance in A. solani.
Learn more about what this may mean to you in the June Spudvine newsletter from University of Idaho http://extension.ag.uidaho.edu/bingham/Jun%202009.pdf
Herbicides in Teff
All Crops All Locations
Posted on: June 10, 2009 by Steve Norberg
Attention:
A pesticide use concern has been brought to our attention. Information on the use of herbicides in the production of Teff, specifically 2,4-D and dicamba, are not currently lawful for use. OSU and the Oregon Department of Agriculture, Pesticides Division, are currently working with U.S. EPA to clarify crop groups in reference to pesticide residue tolerances and labeled products. This is to correct an oversight found in “Teff- A New Warm Season Annual Grass in EM8970” and clarify that there are currently no 2,4-D or dicamba products registered for use in the production of Teff.
As additional information becomes available it will be shared with interested parties. If you have questions please feel free to contact me.
Steve Norberg
541-881-1417.
upcoming OSU ag events
Announcements All Locations
Posted on: May 14, 2009 by Jerry Neufeld
Lynn Jensen from the OSU Malheur County Extension office is inviting interested growers and allied industry to attend three upcoming events: 1) Thrips Seminar, 2) Weed Research Tour, and 3) Malheur Experiment Station Field Day. The pdf below has all the times, dates, etc.
ISDA Pesticide Disposal Program
Announcements All Locations
Posted on: April 8, 2009 by Jerry Neufeld
Idaho State Department of Agriculture is conducting a Pesticide Disposal Program in four Idaho locations this spring. Click on the image below for more information.
Spudvine Newsletter
Announcements All Locations
Posted on: February 9, 2009 by Jerry Neufeld
Following is a link for the first 2009 edition of the Spudvine published by Dr. William Bohl from the UI Blackfoot Extension office.
http://extension.ag.uidaho.edu/bingham/spudvine.htm
Field Burning Training with DEQ
Announcements All Locations
Posted on: February 9, 2009 by Jerry Neufeld
Attached is a pdf file showing the dates that the DEQ is holding Grower Trainings for Crop Residue Burning in Southern Idaho.
Bean Meeting
Announcements All Locations
Posted on: January 27, 2009 by Jerry Neufeld
The Idaho Bean Commission and University of Idaho Extension are holding meetings in the Treasure (February 20) and Magic Valleys (March 3) to get input from bean growers and dealers. More information is in the pdf file below.
Pesticide Applicator Training
Announcements All Locations
Posted on: January 27, 2009 by Jerry Neufeld
University of Idaho Extension and Idaho State Department of Agriculture are conducting an Agricultural Pesticide Applicators Training on March 17, 18 and 20, 2009 at the UI Extension, Caldwell Complex. More information is in the pdf file below.
Spanish Pesticide Safety Training
All Crops All Locations
Posted on: January 27, 2009 by Jerry Neufeld
University of Idaho Extension and Idaho State Department of Agriculture are conducting a Pesticide Safety Training in Spanish on February 24, 2009 at the Vendome in Weiser. More information is in the pdf file below.
Sprinkler Irrigation Conference
Announcements All Locations
Posted on: December 29, 2008 by Steve Norberg
Farmers and ranchers in Oregon and Idaho who might be thinking of purchasing a sprinkler system, or already use sprinklers in their operation should plan to attend the Sprinkler Irrigation Conference being offered by Oregon State University Malheur County Extension. The conference will be held at the Four Rivers Cultural Center in Ontario on January 6, 2009, from 8:30 a.m. to 2:45 p.m.
According to Steve Norberg, Field Crops and Watershed Management Agent at the Malheur County office, experts in the field will be presenting timely information that will be useful to growers as they make plans for new sprinkler irrigation systems and improve on the systems they already have in place.
Growers will learn some of the advantages of using sprinklers in their operations, along with a local grower panel discussion, a segment on TMDL, and other topics such as reduced tillage systems with sprinklers, soil moisture monitoring/scheduling, runoff as impacted by irrigation systems, wheel track management, costs of pivots, followed by lunch, courtesy of several sponsors.
In the afternoon session, growers will receive information on working with their local irrigation districts, nutrient savings when using pivot irrigation, trouble-shooting sprinklers, some options with sprinkler systems, electrical options and programs and Environmental Quality Incentive Programs (EQIP) concerning irrigation.
Please contact the Malheur County Extension office at 541-881-1417 by January 2, 2009 to RSVP.
Sprinkler Irrigation Conference
Announcements All Locations
Posted on: December 17, 2008 by Steve Norberg
Sprinkler Irrigation Conference
Farmers and ranchers in Idaho or Oregon who might be thinking of purchasing a sprinkler system, or already use sprinklers in their operation should plan to attend the Sprinkler Irrigation Conference being offered by Oregon State University Malheur County Extension. The conference will be held at the Four Rivers Cultural Center in Ontario on January 6, 2009, from 8:30 a.m. to 2:45 p.m.
According to Steve Norberg, Field Crops and Watershed Management Agent at the Malheur County office, experts in the field will be presenting timely information that will be useful to growers as they make plans for new sprinkler irrigation systems and improve on the systems they already have in place.
Growers will learn some of the advantages of using sprinklers in their operations, along with a local grower panel discussion, a segment on TMDL, and other topics such as reduced tillage systems with sprinklers, soil moisture monitoring/scheduling, runoff as impacted by irrigation systems, wheel track management, costs of pivots, followed by lunch, courtesy of several sponsors.
In the afternoon session, growers will receive information on working with their local irrigation districts, nutrient savings when using pivot irrigation, trouble-shooting sprinklers, some options with sprinkler systems, electrical options and programs and Environmental Quality Incentive Programs (EQIP) concerning irrigation. Five CEU credits for Certified Crop Advisors in Soil and Water have been applied for.
Please contact the Malheur County Extension office at 541-881-1417 by January 2, 2009 to RSVP.
» Agenda
Outback Steakhouse gift certificates
Announcements All Locations
Posted on: December 10, 2008 by Jerry Neufeld
Thanks to everyone that recently completed an evaluation for the Pest Alert Network.
The winners of the $75 gift certificates to the Outback Steakhouse are Brett Huse and Micheal Huff.
I will put the prizes in the mail today.
PAT Re-certification Training
Announcements All Locations
Posted on: November 20, 2008 by Jerry Neufeld
University of Idaho Extension, Canyon County and the Idaho State Department of Agriculture are sponsoring a pesticide applicator re-certification training on December 16, 2008 at the public meeting room in the Caldwell Police Department. Six Idaho, Oregon and CCA license credits are pending. All the details are on the attached pdf file. Call Jerry Neufeld at 459.6003 if you have any questions.
Alfalfa Hay Meeting
All Crops All Locations
Posted on: November 18, 2008 by Steve Norberg
Hay growers in the Treasure Valley should plan to attend the 2008 Alfalfa Hay Meeting on Thursday, Nov. 20, 2008 at the Sizzler Restaurant in Ontario, Ore. The event is being sponsored by Oregon State University and Malheur County Extension, with lunch courtesy of several local sponsors.
According to Steve Norberg, Field Crops & Watershed Management Agent at the Malheur County Extension, the meeting will feature several speakers who are sure to bring growers up-to-date information on topics such as rodent control, insect control and soil fertility. Other topics to be addressed will be use of moisture sensors, the use of Agrimet for irrigation scheduling, variety trials, fertilizer prices, and the effect of herbicides on hay yields. Growers will have the opportunity to ask general questions of the speakers near the end of the meeting as well as ask questions on the material presented throughout the day.
Two pesticide credits will be given from Oregon Department of Ag and Idaho State Department of Ag and 4.5 CEU for Certified Crop Advisors. The meeting will begin at 9 a.m., break for lunch from 12 noon until 1 p.m., and adjourn at 3:30 p.m. For more information and to RSVP please call the Malheur Extension Office at 541-881-1417.
Idaho Association of Plant Protection Annual Meeting
Announcements All Locations
Posted on: October 29, 2008 by Jeff Miller
The Idaho Association of Plant Protection (formerly known as the Idaho Association of Plant Pathology) is holding their annual meeting at the Best Western Sawtooth Inn in Jerome on November 5-6. The cost is $15 per person to attend. The program is listed below. If you have any questions please contact Phil Nolte at 208-529-8376.
2008 IDAHO ASSOCIATION OF PLANT PROTECTION
Best Western Sawtooth Inn and Suites, Jerome, ID
November 5-6, 2008
Wednesday afternoon, November 5
Time Title Speaker
12:30 Registration
1:00 Welcome Phil Nolte and Carl Strausbaugh
1:10 Group Discussion on Idaho pests: What did you see in 2008? Led by Phil Nolte
1:30 An update on potato viruses in Idaho, 2008 season Alex Karasev
1:50 Studies on beet curly top virus in Idaho: detection and diversity Alex Karasev
2:10 Seed treatments for control of pest & disease problems in sugarbeet. Carl Strausbaugh
2:30 Business Meeting – Treas report and election of co-chairs for 2008-9. Nolte and Strausbaugh
2:50 Break
3:10 Glyphosate, RR crops, nutrition and disease response: Discussion Don Huber
3:30 Fungicide seed treatments combined with management practices for control of seed-borne diseases of potato. Phil Wharton
3:50 Threatening global grains: The current status of UG-99 Juliet Windes
4:10 PVY in Idaho 2007-8 Rhizoctonia interaction? Will fungicides help? Black dot discussion: do fungicides work? Phil Nolte
4:30 Is the “Carbamate Kick” real? Mike Thornton
A total of 3 CCA (PM) and 2 ISDA Pesticide Recertification credits have been requested for this session.
Thursday morning, November 6
Time Title Speaker
8:00 Advances in late blight resistant varieties via Mexico Jonathan Whitworth
8:20 Phosphorus acid vs silver scurf Nora Olsen
8:40 Tactics to increase survival of winter barley Juliet Windes
9:00 Fungicides vs EB, WM, LB and plant health Terry Miller
9:20 Fungicides vs Rhizoctonia Jeff Miller
9:40 IYSV severity and incidence in Utah onions, 2008. Kent Evans
10:00 Break
10:20 New products and application methods for potato insects Terry Miller
10:40 Significance in Ag Science: What is “significant?” Jeff Miller
11:00 Hairy nightshade biology and control Pam Hutchinson
11:20 Insects in eastern Idaho, 2008 Wayne Jones
A total of 3 CCA (PM) and 3 ISDA Pesticide Recertification credits have been requested for this session.
2009 Idaho Potato Conference
Potato All Locations
Posted on: September 8, 2008 by Nora Olsen
Mark your calendars!
Initial plans are being made for the 2009 Idaho Potato Conference in Pocatello, ID on Jan 21-22, 2009.
Please help us provide the most pertinent information by suggesting topics and speakers for the conference.
You can either contact me directly (208-736-3621)or use the attached form that can be faxed (208-736-0843)or emailed (norao@uidaho.edu) to me. Or feel free to pass along your suggestions without the form.
We look forward to receiving your input and seeing you at 2009 Idaho Potato Conference.
Nora Olsen
2009 Conference Chair
Organic Potato Field Days
Potato All Locations
Posted on: August 29, 2008 by Nora Olsen
Mark your calendars for Organic Potato Field Days on Thursday September 18th in Idaho Falls from 1 to 3 pm and Friday September 19th in Shoshone from 10 am to noon. The Field Days will highlight organic potato growers, provide University of Idaho research on organic production, and offer insight to organic production by Alec McErlich who is an agricultural research and development manager for Small Planet Foods.
To get directions and to RSVP contact Keith Esplin at 208-243-1824 or pgike@cableone.net.
Late blight in Cassia County
Potato All Locations
Posted on: August 27, 2008 by Jeff Miller
Late blight was confirmed today in three separate fields in Cassia County. In all fields the blight was not severe and was limited in distribution. It is critical to scout fields that are still green and growing. Fungicide sprays are recommended if late blight is found in or near a field with healthy plants. These finds indicate that the disease is more widespread that previously thought.
Potato Pink Rot Survey
Potato All Locations
Posted on: August 26, 2008 by Jeff Miller
Miller Research is conducting a survey to determine the extent of mefenoxam (e.g. Ridomil) sensitivity to the pink rot pathogen in potato. If you find pink rot in a potato field and are willing to participate in the survey, please contact Jeff or Terry Miller at (208) 531-5124. We will provide instructions on sampling. Results from specific fields will remain confidential, but an overall summary will be reported for each county.
strip till demonstration
All Crops All Locations
Posted on: August 21, 2008 by Jerry Neufeld
STRIP-TILL SEMINAR AND DEMONSTATION
SPONSORED BY AMALGAMATED SUGAR COMPANY
WHEN: SEPTEMBER 4, 2008; 10:00 AM – 2:30 PM
WHERE: CONNORS CAFÉ, BURLEY ID NORTH OFF I-84 EXIT 208
WHAT: PRESENTATIONS 10:00 AM – NOON (CONNERS CAFÉ); NOON LUNCH IS FREE
1:30 PM – 2:30 PM FIELD DEMONSTRATION (850 W 150 S. PAUL, IDAHO)
IMPLEMENTS SCHLAGEL, STRIP CAT, ORTHMAN, CASE/DMI
CUSTOM OPERATER – DEWAYNE HONDO
STRIP-TILL GROWER – ACEY SHAW
OPEN TO ALL GROWERS, NOT JUST SUGARBEET GROWERS. CALL ROBERT DOWNARD AT 208.731.3970 IF YOU HAVE QUESTIONS.
Late blight in Minidoka County
Potato All Locations
Posted on: August 20, 2008 by Jeff Miller
Late blight has been confirmed in two more fields in Minidoka County. One was a few miles north of Paul and the other near Norland. The location of these fields indicates that the pathogen has been spread over a larger area than first estimated.
It is critical to continue fungicide applications as long as vines are green. Gavel, Omega, Revus Top, and Tanos are good stand alone products for foliar late blight control. Revus Top and Tanos are also effective against early blight. Gavel has some EBDC premixed with the product. Curzate, Forum, and Previcur and can be mixed with a standard protectant such as chlorothalonil or an EBDC to provide greater protection than using chlorothalonil or an EBDC alone. Strobilurin products such as Headline, Quadris, and Reason are similar to standard protectants when used at the early blight rate and the higher end of the rate range should be used for late blight protection.
Late blight in Minidoka County
Potato All Locations
Posted on: August 15, 2008 by Jeff Miller
Late blight was found in two more potato fields in Minidoka County today, bringing the total number of confirmed fields to three. These two fields are located a couple of miles north of Paul and both are north of the first confirmed field. The disease pattern in these fields is consistent with spread from another source. It is likely that thundershowers last week spread the pathogen and it is possible that other fields in the area have been affected. It is essential that fields be scouted and any suspicious lesions be analyzed by trained personnel.
These additional findings underscore the importance of reporting late blight. An accurate knowledge of disease incidence is essential so all growers can know how often to apply fungicides. Please report any potential late blight findings so that accurate alerts can be posted.
These finds also show that late blight can get started inside the potato canopy even when overall weather conditions have not been favorable for disease development. Fields with actively growing plants in the Rupert and Paul area should be treated weekly with protectant fungicides such chlorothalonil or EBDC. Other fungicides with greater efficacy can be either tank-mixed with protectants or used in place of protectants.
If you have questions or concerns please contact Jeff Miller at 208-431-4420.
field burning
Announcements All Locations
Posted on: August 5, 2008 by Jerry Neufeld
Attached are files with information about the new field burning procedures. You will want to read these files as the process for field burning has changed since the field burning program moved from ISDA to Idaho DEQ.
Late blight in southern Idaho
Potato All Locations
Posted on: August 4, 2008 by Jeff Miller
Late blight was confirmed today in the Mini-Cassia area. The disease pattern is consistent with a seed-borne source of the pathogen. The field in question had received fungicide applications and lesions could not be found in any adjacent fields. The field is scheduled to be killed today. Based on this fact and the absence of thundershowers, the probability of field to field spread is very low. If growers have been applying fungicides with activity against late blight then additional applications are not needed. Fungicides active against late blight include (but are not limited to) standard protectants (chlorothalonil and EBDC based products), strobilurins, Omega, and Gavel. Endura is not effective against late blight.
This finding underscores the importance of buying clean seed and scouting. Even though the weather has not been favorable for late blight development, the disease can get started inside a potato canopy if inoculum is present.
If you have questions or concerns please contact Jeff Miller at 208-431-4420.
powdery mildew in sugarbeets
All Crops All Locations
Posted on: July 10, 2008 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the western Treasure Valley. There have also been reports of loopers in many Treasure Valley sugarbeet fields. As you scout your fields for powdery mildew, you may also want to be on the lookout for loopers and black bean aphids. Contact your field representative from the Amalgamated Sugar Company if you have questions about treatment options.
powdery mildew in sugarbeets
Sugarbeets All Locations
Posted on: June 27, 2008 by Jerry Neufeld
The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications in the west end of the Treasure Valley the week after July 4 regardless of whether or not your fields are surface or sprinkler irrigated. You may also want to include an insecticide treatment for black bean aphid or loopers in the mildew tank mix. CONTACT YOUR WHITE SATIN FIELD REPRESENTATIVE FOR INFORMATION REGARDING THESE TREATMENT RECOMMENDATIONS AND ROTATION OF CHEMISTRIES.
stripe rust in wheat
Small Grains All Locations
Posted on: June 25, 2008 by Jerry Neufeld
The following information was provided by Dr. Brad Brown from the UI Parma R and E Center.
It appears that Treasure Valley wheat has gone yet another year without significant stripe rust incidence. The only stripe rust we are aware of in western Idaho thus far is a small infection (less than 5%) in a susceptible hard red winter wheat variety called Moreland. It is the only wheat variety of those we evaluate in both the Extension winter and spring wheat variety performance trials that we have found any rust in. Varieties commonly grown in the area do not appear to be susceptible to the stripe rust race infecting Moreland. Even Brundage soft white winter wheat, known to be less tolerant to stripe rust than Stephens, looks pretty clean on the Parma R & E Center.
Scouting for stripe rust is still a good policy, especially for spring plantings that are slower to develop. Development of both winter and spring wheat is later than normal this year. Even though some fields may have been treated much earlier with tank mixes of fungicides and herbicides, that does not preclude infection during latter grain filling.
Some winter wheat planted after wheat is showing significant root rot. The symptoms include heads that are maturing earlier than those around them, and are poorly filled or blank. The root systems of plants dug up, when rinsed with water, generally show limited root growth or roots browned from fungal infection, sometimes encrusted with fungal mycelium that does not wash off readily. The crown tissue, instead of white to cream colored, can show browning or blackened deterioration. The symptoms of some root rots do not necessarily show up on the lower stem. At this point of crop development the damage to the crop is done and there is no treatment for control.
Stripe Rust in Wheat
Small Grains All Locations
Posted on: June 18, 2008 by Juliet Windes
Stripe rust on wheat or barley has NOT yet been reported in Idaho. However, it was reported in Montana, and I have seen symptoms similar to a resistant-type reaction in dryland winter wheat (flecking similar to resistance or to pre-putsule formation that could also be attributed to wind driven sand blasting). PLEASE scout susceptible winter wheat varieties such as Moreland, and report suspected outbreaks to me (Juliet Windes 208-529-8376) if found in District III or IV, Stephen Guy (208-885-6744) in District I, or Brad Brown in District II.
In most cases, we are beyond the spray window for applying fungicides in winter wheat, but not for spring grains. The environment has been very conducive for infection and spread. Stripe rust pressure has been low in the PNW, but areas in California have had high disease pressure. There have been strong winds coming from the Sacramento area directly to southern Idaho, so outbreaks are possible. Please visit the cereals website at http://www.ag.uidaho.edu/scseidaho/ for additional information on stripe rust. The following email was sent from Montana State University:
From: William Grey [mailto:WGrey@Montana.edu]
Sent: Tuesday, June 17, 2008
Report of Stripe Rust on winter wheat in Bozeman, June 17, 2008. Dr. Mary Burrows, Extension Plant Pathologist, noted stripe rust on two winter wheat cultivars grown on the A.H. Post Farm, MSU, Bozeman, MT. Varieties are Norris CL and Hyalite CL (Clearfield varieties), field size is 2.5 acres per variety. Discrete and small patches of stripe rust in each of the fields. Individual leaves had linear stripes of sporulating rust covering 10% of leaf area and with symptomatic leaves in the lower leaf canopy. Winter wheat is late tillering and early stem elongation stage of development.
Malheur Experiment Station Field Day
Announcements All Locations
Posted on: June 17, 2008 by Jerry Neufeld
You are invited to the Malheur Experiment Station Annual Field Day presented by the OSU Malheur Experiment Station on July 9, 2008 from 8:30 am to 1:00 pm. Complimentary lunch will be served. Please reserve a lunch by calling Janet Jones at (541) 889-2174 or janet.jones@oregonstate.edu.
Cereal Leaf Beetle Brown Bag Luncheon
All Crops All Locations
Posted on: June 13, 2008 by Steve Norberg
On June, 17th at noon at the Malheur Extension Office, 710 SW 5th Ave. Ontario, OR. Steve Norberg will discuss life cycle and control of Cereal Leaf Beetle with plenty of time for questions and answers. Bring your own lunch and eat during the
discussion. If you have any questions about the event, give me a call at 541-881-1417.
Weed Tours
All Crops All Locations
Posted on: June 10, 2008 by Pam Hutchinson
You Are Invited to Attend the University of Idaho SNAKE RIVER WEED CONTROL TOUR
Kimberly R&E Center – Tuesday June 17, 2007
Aberdeen R&E Center – Wednesday June 18, 2007
Registration begins at 8:00 A.M. and the tours start at 8:30 A.M. The tours will conclude at noon with a sponsored lunch. Idaho pesticide re-certification credits (3) will be offered.
Kimberly Research & Extension Center
Sugar beet:
Critical period of weed control
Volunteer potato timing of removal with Roundup
Crop tolerance and weed control with Sequence and Touchdown
Glyphosate tank mixtures and compatibility with other pesticides
Strip tillage versus conventional tillage
Cereals
Influence of spring barley cultivar characteristics, fertilizer placement and herbicide on broadleaf weeds
Comparison of Gowan sulfonylurea herbicides to proprietary sulfonylurea herbicides
Comparison of ET and Helm Agro sulfonylurea herbicides to standard herbicides
Broadleaf weed control with Huskie in comparison to other herbicides
Wild oat control with Wolverine in comparison to other wild oat herbicides
Wild oat and Broadleaf control with pyroxsulam in spring wheat
Corn
Preemergence and postemergence weed control in Roundup Ready grain corn
Comparison of mustard seed meal rates for weed control
Critical period of weed control in Roundup Ready silage corn
Potato
Weed control with postemergence herbicides
And more...
Entomology trials including wireworm control, effect
of hairy nightshade on PVY, CPB/aphid control and effect on potato viruses
Wednesday June 18, 2007
Aberdeen Research & Extension Center
Potato
Weed control and crop safety:
Specialty variety tolerance to Outlook - Dark Red Norland, Nordonna, Modoc, Sangre, Chipeta, and Yukon Gold
Reflex tank mixtures
Metribuzin Comparisons
Organic weed control and crop safety with acetic acid
Simulated glyphosate drift on Ranger Russet
Chemigation and Sprinkler Incorporation
Chateau sprinkler incorporation timing
Outlook, Chateau chemigation
Eptam sprinkler incorporation timing
Weed biology
Hairy nightshade time of removal/critical interference Period in Russet Norkotah
Herbicide Dissipation
Effect of reservoir tillage on Outlook herbicide placement and weed control
Sugar beet
Roundup Ready Sugar Beet:
Application timing and tank mix partners with Roundup Power Max
Effect of weed removal timing and glyphosate rate on sugar beet yield
Compatibility of Roundup Power Max with Gem and Proline fungicides when applied in a tank mixture
WE HOPE TO SEE YOU AT THE TOURS – BRING YOUR FRIENDS AND ASSOCIATES!!!
Call Pam at Aberdeen 397-4181 or Don at Twin Falls 736-3616 for more information
Late blight forecast
Potato All Locations
Posted on: June 10, 2008 by Jeff Miller
The late blight forecast for the 2008 growing season in southern Idaho is negative. Even though we have been experiencing cool, wet weather recently, the amount of precipitation has still been relatively low compared to previous late blight years.
Additionally, temperatures have been outside the favorable range for pathogen development.
This forecast is only an estimate of the threat of late blight. It is still critical to scout fields for the presence of late blight as the canopy develops. Late blight is likely to be found first in the center span of pivots, in irrigation overlaps, field areas with sub moisture, along mainlines, or in shaded areas where periods of leaf wetness are extended.
If you find any suspicious lesions, please send them to University of Idaho personnel for confirmation.
sugarbeet root maggot
All Crops All Locations
Posted on: June 3, 2008 by Jerry Neufeld
Dr. Clint Shock, Superintendent at the OSU Malheur Experiment Station is reporting that sugarbeet root maggots have been found in Malheur County sugarbeet fields. If you have sugarbeet plants in your field that are dying for no apparent reason, dig up the sugarbeet plants and look for the small white maggots and damage to the roots. The images below show the maggot larvae and the damage they cause. If you suspect you have this pest, contact your Amalgamated Sugar Company fieldman for treatment options.
Alfalfa Weevil Larvae
All Crops All Locations
Posted on: May 22, 2008 by Steve Norberg
On 5/21/08 Steve Norberg confirmed that Alfalfa Weevil Larvae were in high numbers in a field near Ontario. With the cooler weather in our area slowing alfalfa growth we may have more problems with this pest. I encourage you to scout your alfalfa fields for this pest.
Alfalfa Weevil Larvae are about 0.4 of an inch long, yellow to green,, with a white stripe down the back. They feed in and on the buds and leaves of alfalfa.
Sampling and thresholds
Treat when-
1. Thirty percent of plant terminals show feeding damage. Either cut and then treat stubble or treat the standing crop, depending on how close to cutting it is.
2. Damage is noticeable 1 week or more before estimated cutting time, and larvae exceed 10 per 90 degree sweep, sometimes called a straight-line sweep.
3. Larvae number 20 or more per sweep (180 degree sweep , sometimes called a half sweep), Thresholds based on larvae per sweep are a general guideline; weather, plant vigor, irrigation schedules, cutting date, history of weevils in the area, and a complex of other factors may determine whether treatment is warranted.
For pictures and more information see:
http://www.pnwpestalert.net/reference/Crops~~Alfalfa~~Alfalfa+Weevil~~.html
Steve Norberg, Field Crops and Watershed Management, OSU Extension Malheur County
Potential Freeze Damage to Cereals
Small Grains All Locations
Posted on: April 29, 2008 by Steve Norberg
On Monday April 21 temperatures plummeted in the Treasure Valley Area. Readings at the Malheur Experiment Station went as low as 21 F. The effect on winter cereals in the area will be dependent on the stage of the crop on that day. Those fields that had the growing point above ground (jointing) when this freeze event came may have moderate to severe damage. Producers can split open some stems and check the developing head. If the head is green or light greenish in color and seems firm, it is probably fine. If the head is yellowish and mushy, it may have freeze injury.” Healthy tillers will help compensate for yield losses to main stems. The links below have a summary of growth stages, the temperatures required for wheat and barley freeze damage, primary symptoms and yield effects.
Please see pages two and three of the Growing Treasure in the Valley Newsletter found at
http://extension.oregonstate.edu/malheur/Agriculture/Newsletters/Gr%20Tr_Apr_2008.pdf.
Other references can be found at: http://www.oznet.ksu.edu/library/crpsl2/c646.pdf
and
http://www.uidaho.edu/so-id/entomology/bulletin_724.htm
New Potato GAP Website and Manual
Potato All Locations
Posted on: April 17, 2008 by Nora Olsen
The University of Idaho has designed a new comprehensive organizational manual and website for potato growers to help simplify the necessary requirements to successfully pass the USDA GAP Audit. At the website you can easily access the documents and make necessary changes appropriate to your farming operation. Documents also include examples of employee policy forms in both English and Spanish, Standard Operating procedures (SOP) as related to the current Audit, and additional website information. All information is present on the website to compile a hard-copy manual in a 3-ring binder with all related documents inserted.
The website is:
http://www.kimberly.uidaho.edu/potatoes/gap.htm
When changes occur to the audit or with the documents provided at this website, an email notification will be sent via PNWPestalert. Feel free to contact me directly regarding suggestions for the website and documents (Nora Olsen, 208-736-3621; norao@uidaho.edu).
Fungicides applied with Herbicides / stripe rust control
Small Grains All Locations
Posted on: March 31, 2008 by Juliet Windes and Brad Brown
We have had several questions in regard to early application of fungicides timed with herbicide applications and effectiveness in either increasing yield or providing disease protection. I only have 2 years worth of data (2 PDMRs) that directly address this question in spring wheat, which can be accessed at the South-central / Southeast Idaho Cereals website: http://www.ag.uidaho.edu/scseidaho/ under “Publications”. In 2006, we had enough late season stripe rust to damage yield in a very susceptible spring wheat variety. In the 2006 experiment, we saw a 1.3 bu increase with reduced rate (7 fl oz/A) of Quilt applied at herbicide timing and a 2.8 bu increase with (6 fl oz/ A) Headline applied at herbicide timing over the untreated control. We have NOT seen a statistically significant yield benefit with application of fungicides at herbicide application in 2006 or 2007, where the plants were in the 4-5 leaf stage at time of herbicide treatment. In 2006, where stripe rust was present at damaging levels late in the season, early application of Headline and Maestro at Feekes 3 did not reduce stripe rust over the untreated control (63.8% leaf area affected with early Headline versus 65.6% in the untreated control). Disease control with Headline alone at Feekes 8 resulted in 26.3% leaf area diseased and 82.5 bu/A as opposed to the early Headline treatment at 63.8% disease, and 72.5 bu/A. The yield and disease differences were significant at the 5% level.
In 2007, we did not have significant stripe rust. In experiment 2 (2007) we saw a 0.9 bu increase with 6 oz/A Headline, a 1.0 bu increase with reduced rate of Quilt (7 oz/A), and 1.3 bu decrease with a reduced rate of (6 oz/A) Stratego, when these fungicides were applied with herbicides. For Quilt, the rates were at a ½ rate of 7 fl oz/A at herbicide application versus 14 fl oz/A for full application at heading. Headline was applied at 6 fl oz/A with an herbicide and at 6 fl oz/A at heading. Stratego was 6 fl oz/A with herbicide or 10 fl oz/A at heading. Obviously, results may vary depending upon year and location, and multiple replicated trials over several years will give us the best answer. Talking with our BASF rep, early Headline recommendations are full rate (6 fl oz/A), for which they say they consistently (80% of the time) see 2-3 bu/A increase, and more often an average 6 bu/A increase in yield in unreplicated on-farm trials in wheat and barley.
In general, fungicides are recommended to control disease and protect yield when there is disease in the area; for example, as soon as stripe rust is present. In varieties that are very susceptible, that may mean an early protective fungicide application in with the herbicides when stripe rust or other diseases are in the area. However, in many cases, effective disease control and yield protection is achieved with one application to protect the flag leaf and / or the developing head, as late as allowed by the label. In the past, when disease becomes an issue, the greatest benefit to yield is application between flag leaf emergence and flowering, depending upon when the disease is present. Experiments in Kansas do not support split applications of fungicides to control disease. In years with low disease pressure, an overall 2.5% increase in yield was seen with split applications of fungicides, but fungicide applications were NOT timed for application with herbicides (Erick De Wolf, Bill Bockus, Bob Bowden, Kansas State University).
I do not think there would be any benefit of foliar fungicides for control of root rots, as those that are "locally" systemic are not readily translocated down into the root system. Any systemic translocation will more likely be in an upward direction, so control of root rots is highly unlikely. Root rot control would be best managed with seed health practices, such as in-furrow fertility and seed treatments, even with second-year grain. As far as second year of wheat or barley, if there are foliar pathogens present early (and it depends on the disease, like scald in barley), then I think there may be some benefit in disease control, but little benefit in yield. Diseases like scald and spot blotch tend to dissipate with warmer, dryer weather anyway. So I am not recommending foliar application of fungicides simply because a grower went back-to-back grain. Spraying fungicides for disease control is really only effective when disease is present and only after flag leaf emergence to heading. There seems to be no real benefit from 2 applications of fungicides within a season. Appropriate rotation and plant health practices remain the best insurance for a healthy crop (in our area). Fungicides are effective when disease threatens yield and the best yield protection comes after flag leaf emergence, but especially at heading to flowering.
DO NOT delay weed control applications to target potential disease problems. You will lose more yield to weed competition than gain by trying to target an early season fungicide application.
At current prices, a 2-3 bu yield increase should pay for most fungicides when incorporated into the herbicide treatment. However, in our area, we usually have very little foliar disease pressure. In areas where disease pressure can be significant early in the season (say, stripe rust in the Palouse), then I would consider early-season application based on significance of disease in the area. However, routinely applying low-levels of fungicides for “just-in-case” protection may contribute to the occurrence and buildup of fungicide resistance in fungal populations and is counter to the integrated pest management principals developed to reduce pesticides in the environment and we need to carefully consider any additional input costs.
AgrAbility Project
Announcements All Locations
Posted on: March 26, 2008 by Jerry Neufeld
When one family member has a disability, it has an impact on the whole family. This is especially true on farms and ranches where the work is often physically demanding. The Idaho AgrAbility Project offers farmers, ranchers, and members of their families with disabilities the opportunity to work with an Assistive Technology Practitioner (ATP) to determine what steps can be taken to adapt their tasks, facilities, or equipment to better meet their needs. The project also offers training to help families meet the challenge of farming or ranching with a disability.
For more information about the Idaho AgrAbility Project click on “Crop Info,” “Announcements,” and “AgrAbility Project” or contact United Cerebral Palsy in Boise at 377-8070 or 888-289-3289.
AgrAbility Project
All Crops All Locations
Posted on: March 26, 2008 by Jerry Neufeld
When one family member has a disability, it has an impact on the whole family. This is especially true on farms and ranches where the work is often physically demanding. The Idaho AgrAbility Project offers farmers, ranchers, and members of their families with disabilities the opportunity to work with an Assistive Technology Practitioner (ATP) to determine what steps can be taken to adapt their tasks, facilities, or equipment to better meet their needs. The project also offers training to help families meet the challenge of farming or ranching with a disability.
For more information about the Idaho AgrAbility Project click on “Crop Info,” “Announcements,” and “AgrAbility Project” or contact United Cerebral Palsy in Boise at 377-8070 or 888-289-3289.
AgrAbility Project
All Crops All Locations
Posted on: March 25, 2008 by Jerry Neufeld
When one family member has a disability, it has an impact on the whole family. This is especially true on farms and ranches where the work is often physically demanding. The Idaho AgrAbility Project offers farmers, ranchers, and members of their families with disabilities the opportunity to work with an Assistive Technology Practitioner (ATP) to determine what steps can be taken to adapt their tasks, facilities, or equipment to better meet their needs. The project also offers training to help families meet the challenge of farming or ranching with a disability.
For more information about the Idaho AgrAbility Project click on “Crop Info,” “Announcements,” and “AgrAbility Project” or contact United Cerebral Palsy in Boise at 377-8070 or 888-289-3289.
AgrAbility Project
All Crops All Locations
Posted on: March 20, 2008 by Jerry Neufeld
AgrAbility Helps Farmers with Disabilities
When one family member has a disability, it has an impact on the whole family. This is especially true on farms and ranches where the work is often physically demanding. The Idaho AgrAbility Project offers farmers, ranchers, and members of their families with disabilities the opportunity to work with an Assistive Technology Practitioner (ATP) to determine what steps can be taken to adapt their tasks, facilities, or equipment to better meet their needs. The project also offers training to help families meet the challenge of farming or ranching with a disability.
For more information about the Idaho AgrAbility Project, contact United Cerebral Palsy in Boise at 377-8070 or 888-289-3289. Click on the thumbnails below for more information.
IPPMA Meeting
Announcements All Locations
Posted on: February 6, 2008 by Nora Olsen
The annual Idaho Potato Pest Management Association (IPPMA) meeting is scheduled for February 7, 2008 at the Odd Fellow’s Hall, Wendell, Idaho. All are welcome. The meeting will start at 9:00 a.m. until 1:00 p.m. Lunch is provided. Two (2) Idaho Pesticide Recertification credits are available.
Topics will include:
•Potato Leaf Roll Virus, Green Peach Aphids and the IPPMA
•PVY in Idaho 2007
•Affect of stress on tuber quality
•Update on Potato Cyst Nematode in Idaho
•Commodity Trends Shaping Idaho Agriculture
•Managing white mold: The Good, the Bad, and the Ugly
•Regent: A New Insecticide for Wireworm Control in Potatoes
If you have any questions, contact Nora Olsen at 736-3621 or norao@uidaho.edu
OSU Pesticide Short Course
Announcements All Locations
Posted on: January 17, 2008 by Jerry Neufeld
Below is information about the Oregon State University Extension Pesticide Chemistry, Toxicology, and Policy Short Course at the Convention Center in Ontario on February 13-14, 2008.
Tentative Agenda
Wednesday, February 13
12:00- 1:00 p.m. Registration
1:00 -1:15 p.m. What can we learn from our mistakes? What at Stake? – Lynn Jensen, OSU
1:15 – 1:45 p.m. Importance of following Labels & Laws – Ronda Hirnyck, UI
1:45 – 2:30 p.m. IR-4 Minor Crop Registration – Joe DeFrancesco, OSU
2:30- 2:45 p.m. Break
2:45 – 3:30 p.m. Mode of Action of Herbicides – Andy Hulting, OSU
3:30 -4:15 p.m. Pesticide Drift Mitigation in the Columbia Basin – Larry Bennett, OSU
4:15 -5:00 p.m. Pesticide Stewardship Partnerships – Kevin Masterson, DEQ EPA Fumigant
5:00 p.m. Adjourn
_____________________________________________________________________________
Thursday, February 14
7:00-8:00 a.m. Registration
8:00 – 8:40 a.m. Vegetative Buffers to Protect Water Resources – Sandy Halstead, EPA Reg. 10
8:45 – 9:30 a.m. EPA Fumigant Mitigation Proposal – Dirk Helder- EPA Office of Pesticide Programs
9:30 – 10:15 a.m. Pesticide Use Reporting – Laurie Gordon, ODA
10:15 – 10:30 a.m. Break
10:30 – 11:10 a.m. Environmental Monitoring – Kim Anderson, OSU
11:15 a.m. -12:00 p.m. Registration of New Pesticides – Laurie Gordon, ODA
12:00-1:00 pm Lunch
1:00 – 1:45 p.m. Pesticide Impacts on Aquatic Resources in the PNW – Jeff Jenkins, OSU
1:45 -2:30 p.m. Pesticide Lawsuits Update and How They Affect You – Laurie Gordon, ODA
2:30 p.m. – 2:45 p.m. Break
2:45 – 3:30 p.m. Herbicide Fate after spraying – Jeff Jenkins, OSU
3:30 – 4:15 p.m. Basic Principles Toxicology – Kaci Agle, OSU
4:15 – 5:00 p.m. Overview of National Pesticide Information Center – Melody Johnson, OSU
5:00 p.m. Adjourn
OSU Short Course Registration Form
Name:__________________________________ Phone:________________
Address:______________________________________________________
City:_______________________ State:________________ Zip:_________
License #:____________________________
Registration Fee: Before January 31 - $60.00
After January 30 - $65.00
Please make checks payable to: OSU, Agriculture Research Foundation (ARF)
Mail fee and registration form to: Malheur County Extension Office
710 SW 5th Ave Ontario, OR 97914
For any additional information, please contact the Malheur County Extension Office at 541-881-1417.
There will be 12 Idaho and Oregon pesticide license credits and 9 CCA credits.
Gift certificates to Outback Steakhouse
Announcements All Locations
Posted on: December 7, 2007 by Jerry Neufeld
Thanks to everyone that completed an evaluation survey. Winners of the two gift certificates to Outback Steakhouse are: Bob Simerly from Nyssa, OR and Steve Martineau from Nampa, ID. Gift certificates will be mailed today.
pesticide applicator recertification training
Announcements All Locations
Posted on: November 20, 2007 by Jerry Neufeld
A pesticide re-certification training will be held on Tuesday, December 18, 2007. Registration starts at 8:00 am at the Caldwell Police Department public meeting room (110 S 5th). The program will end at 4:30 pm. Among the topics will be; Update on Invasive Ag Pests, 21 New Noxious Weeds in Idaho, Production Practices for Roundup Ready Sugarbeets and Agricultural Water Quality Issues. Idaho license holders will receive 6 credits, and CCA credits have been applied for. Registration is $30.00 including lunch and breaks. You must call the Canyon County Extension office at 459.6003 to RSVP so we have an accurate head count. However, you still pay your registration at the door.
Pest Management Meeting
Announcements All Locations
Posted on: November 20, 2007 by Jeff Miller
Miller Research Crop Pest Management Workshop
December 11, 2007
Best Western Conference Center
800 N. Overland Ave.; Burley, ID
For all potato and sugarbeet growers and consultants:
Come to learn the latest information on managing pests of potato and sugar beets. Presentations will discuss the pros and cons of using chemical and cultural practices to manage diseases and insect pests of both crops.
There is no cost to attend this meeting.
Agenda:
8:00-9:00 New information on pink rot management.
8:30-9:00 Effect of metam sodium on potato disease control and sugar beet weed management.
9:00-9:30 Fungicides for controlling early blight and black dot in potato and secondary effects on white mold.
9:30-10:00 Fungicides for Rhizoctonia control in potatoes.
10:00-10:30 Insecticides for control of Colorado potato beetle and green peach aphid in potatoes.
10:30-11:00 New research for managing post-harvest diseases in potatoes.
11:00-11:30 Value of cultivation for weed control in RoundUp Ready sugar beets.
11:30-12:00 Seed treatment vs. in-furrow insecticides for insect control
Presentations will be given by Dr. Jeff Miller and Dr. Terry Miller and will focus on new results from fungicide and insecticide trials relating to product rates, application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations. Most of the research discussed here has been sponsored by the Idaho Potato Commission and Snake River Sugar Company.
Please RSVP to Jeff Miller at 208-531-5124 or by email at: jeff@millerresearch.com
IAPP annual meeting on November 7-8
Announcements All Locations
Posted on: November 5, 2007 by Jeff Miller
The finalized program for the 2007 IAPP meeting is finally available. We apologize for being so late this year. There will be 3 CCA credits offered for each day. Additionally, 2 ISDA credits are available for Wednesday and 3 for Thursday.
If you have any questions, please call Jeff Miller at 531-5124 or 431-4420.
2007 IDAHO ASSOCIATION OF PLANT PATHOLOGY
Best Western Sawtooth Inn and Suites, Jerome, ID
November 7-8, 2006
Wednesday afternoon, November 7
12:30 Registration
1:00 Welcome by Phil Nolte and Jeff Miller
1:10 Urban Lesions (Diseases in an urban setting) by Wayne Jones
1:30 Recent State Surveys of Plant Pathogens by Liz Vavrica
1:50 Influence of BNYVV on Sugar Beet Storability by Carl Strausbaugh
2:10 Working in concert: Plant defense genes and pathways responding to crown rot infection in hexaploid wheat (Triticum aestivum) seedlings by Jill Petrisko
2:30 Business Meeting – Treasurer’s report and election of co-chairs for 2007.
2:50 Break
3:10 Managing Sugar Beet Diseases by John Gallian
3:30 Impact of Global Warming on Crop Production in Idaho by Juliet Windes
3:50 Frost Protection and Disease Control with Strobilurins on Sugar Beets by Jeff Miller
4:10 Value of Cultivation on RoundUp Ready Sugar Beet Production by Terry Miller
4:30 How Different is Managing White Mold in Beans Compare to Potato? by Jeff Miller
A total of 3 CCA (PM) and 2 ISDA Pesticide Recertification credits are available for this session.
Thursday morning, November 8
8:00 New Research on Fungicides for Potato Disease Management in Storage by Lynn Woodell
8:20 New Strains of PVY by Alex Karasev
8:40 PVY in Idaho in 2007 by Phil Nolte
9:00 Effect of Potato Varieties on Developing Suppressive Soils by Jim Davis
9:20 Can Vapam be Used to Promote Biological Control? by Jim Davis
9:40 Group Discussion on Potato Diseases: What did you see in 2007? Led by Jeff Miller
10:00 Break
10:20 Green Manures: Putting Theory into Practice by Shane Clayson
10:40 Potato Cyst Nematode Update by Eoin Davis
11:00 Bacterial Bud End Tuber Decay in Potato by Terry Miller
11:20 Pros and Cons of Pink Rot Management with Fungicides by Jeff Miller
A total of 3 CCA (PM) and 3 ISDA Pesticide Recertification credits are available for this session.
Potato Tuber Worm
Potato All Locations
Posted on: October 5, 2007 by Jerry Neufeld
Ben Simko from the Idaho State Department of Agriculture is reporting that 2- Potato Tuber Worm males were captured in a trap on 9/26 in a harvested field of potatoes west of Parma. 1 – PTW male was captured on 9/26 from a harvested field east of Parma.
Thus far the statewide season totals are 5 males captured at four sites all within a ~10 mile radius of Parma. If you have heard of any PTW infested or damaged tubers you are encouraged to contact Ben at 332-8620.
The PTW survey report can be found at:
http://www.agri.idaho.gov/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php
pink rot in potato
Potato All Locations
Posted on: October 3, 2007 by Jerry Neufeld
The University of Idaho potato pathology department is currently testing tubers infected with pink rot to determine the level of resistance to mefenaxom (Ridomil) in Idaho. If you are finding pink rot in your field please contact Shane Clayson @ 208-397-4181 or 208-681-0652 to arrange free testing of your pink rot samples. All samples tested will be identified by county only.
Fall Pesticide Disposal
Announcements All Locations
Posted on: August 20, 2007 by Jeff Miller
The Idaho State Department of Agriculture (ISDA) is preparing for an unusable pesticide collection this fall. Pesticides will be accepted from virtually all sources including farmers, homeowners, pesticide applicators, researchers, pesticide dealers, etc. Herbicides, rodenticides, fungicides, insecticides, and all other “-icides” will be accepted. However, fertilizers, spent motor oil, antifreeze, paint, or similar waste will NOT be accepted. There is no cost for the first 1,000 pounds. Pre-notification of the total pounds of pesticide being brought is required and can be done by calling your local ISDA field office. Participants will sign a release, transferring ownership of the pesticides to the ISDA at the collection site in accordance with PDP rules.
Collection times run from 9:00 to 1:00 at the following:
Rexburg (Madison County Solid Waste Transfer Station): September 10
American Falls (Power County Landfill): September 11
Burley (Bureau of Land Management): September 12
Twin Falls (Twin Falls Canal Company): September 13
To pre-register please call Victor Mason at 208-465-8442 or your local field office:
Boise office: Rodney Gabehart at 208-332-8608 or Bob Spencer at 208-332-8613
Nampa office: Victor Mason at 208-465-8442
Idaho Falls: Steve Hobley at 208-525-7158
Pocatello: Steve Riedy at 208-236-6091 or Kenneth Funk at 208-236-6352
Twin Falls: Randy Quigley at 208-736-5277 or Jim Childs at 208-736-4790
Pre-registration is required to participate. If no pre-registrations are received, a collection site may be cancelled.
More information can also be found at www.agri.idaho.gov.
Potato Tuber Worm
Potato All Locations
Posted on: August 17, 2007 by Jerry Neufeld
Ben Simko with ISDA is reporting that to date they have not captured any adult Potato Tuber Worm moths at any locations across the state. Specifically, the 100 traps in Canyon County have been negative. Last season the first PTW was captured around Parma on August 1.
Results from the trapping program, and word of any positives, are posted at the ISDA website:
http://www.agri.idaho.gov/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php
PTW catches are trending lower this season in the Hermiston, OR area.
http://oregonstate.edu/Dept/hermiston/documents/PotatoUpdate7-30-07.doc
Potato Association of America Meeting, Idaho Falls, Aug. 12-
All Crops All Locations
Posted on: August 9, 2007 by Matt Goodale
Please plan to attend The Potato Association of America 91st Annual Meeting to be held Aug 12-16, 2007 at the Shilo Inn Conference Center in Idaho Falls, Idaho. The Potato Association of America is the official professional society for those interested in advancing the potato industry.
There will be a symposium on “Enhancing the nutritional value of potato tubers” on the morning of August 13th.
An industry program with selected topics of interest to potato growers and industry personnel is scheduled for Aug. 14 from 8 am to noon.
Industry Program registration is only $25 (includes lunch). To attend the entire conference, $265 for PAA members ($315 for non- members).
For more information visit the website: http://www.conferences.uidaho.edu/PAA/
Potato Association of America Meeting, Idaho Falls, Aug. 12-
All Crops All Locations
Posted on: August 9, 2007 by Matt Goodale
Please plan to attend The Potato Association of America 91st Annual Meeting to be held Aug 12-16, 2007 at the Shilo Inn Conference Center in Idaho Falls, Idaho. The Potato Association of America is the official professional society for those interested in advancing the potato industry.
There will be a symposium on “Enhancing the nutritional value of potato tubers” on the morning of August 13th.
An industry program with selected topics of interest to potato growers and industry personnel is scheduled for Aug. 14 from 8 am to noon.
Industry Program registration is only $25 (includes lunch). To attend the entire conference, $265 for PAA members ($315 for non- members).
For more information visit the website: http://www.conferences.uidaho.edu/PAA/
Potato Association of America Meeting in Idaho Falls Aug. 12
All Crops All Locations
Posted on: August 3, 2007 by Nora Olsen
Please plan to attend The Potato Association of America 91st Annual Meeting to be held Aug 12-16, 2007 at the Shilo Inn Conference Center in Idaho Falls, Idaho. The Potato Association of America is the official professional society for those interested in advancing the potato industry.
There will be a symposium on “Enhancing the nutritional value of potato tubers” on the morning of August 13th.
An industry program with selected topics of interest to potato growers and industry personnel is scheduled for Aug. 14 from 8 am to noon.
Industry Program registration is only $25 (includes lunch). To attend the entire conference, $265 for PAA members ($315 for non-members).
For more information visit the website: http://www.conferences.uidaho.edu/PAA/
Potato Association of America Meeting in Idaho Falls Aug 12-
All Crops All Locations
Posted on: August 2, 2007 by Nora Olsen
Please plan to attend The Potato Association of America 91st Annual Meeting to be held Aug 12-16, 2007 at the Shilo Inn Conference Center in Idaho Falls, Idaho. The Potato Association of America is the official professional society for those interested in advancing the potato industry.
There will be a symposium on “Enhancing the nutritional value of potato tubers” on the morning of August 13th.
An industry program with selected topics of interest to potato growers and industry personnel is scheduled for Aug. 14 from 8 am to noon.
Industry Program registration is only $25 (includes lunch). To attend the entire conference, $265 for PAA members ($315 for non-members).
For more information visit the website: http://www.conferences.uidaho.edu/PAA/
Potato Association of America Meeting in Idaho Falls Aug 12-
All Crops All Locations
Posted on: August 2, 2007 by Nora Olsen
Please plan to attend The Potato Association of America 91st Annual Meeting to be held Aug 12-16, 2007 at the Shilo Inn Conference Center in Idaho Falls, Idaho. The Potato Association of America is the official professional society for those interested in advancing the potato industry.
There will be a symposium on “Enhancing the nutritional value of potato tubers” on the morning of August 13th.
An industry program with selected topics of interest to potato growers and industry personnel is scheduled for Aug. 14 from 8 am to noon.
Industry Program registration is only $25 (includes lunch). To attend the entire conference, $265 for PAA members ($315 for non-members).
For more information visit the website: http://www.conferences.uidaho.edu/PAA/
powdery mildew
Sugarbeets All Locations
Posted on: July 13, 2007 by Jerry Neufeld
Howard Binford from the Amalgamated Sugar Company is reporting that powdery mildew has been found in a sugarbeet field north of Adrian, Oregon.
powdery mildew in sugarbeets
Sugarbeets All Locations
Posted on: June 27, 2007 by Jerry Neufeld
The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications in the west end of the Treasure Valley by July 4, and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN A REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. CONTACT YOUR WHITE SATIN FIELD REPRESENTATIVE FOR INFORMATION REGARDING THEIR TREATMENT RECOMMENDATIONS AND ROTATION OF CHEMISTRIES.
Haanchen barley mealybug
Small Grains All Locations
Posted on: June 11, 2007 by Jerry Neufeld
Haanchen barley mealybug in north-central Idaho?
Mealybugs infesting spring barley, spring wheat and spring oats have been recovered from four commercial fields near Cottonwood, ID (Lewis and Idaho counties). Specimens additionally were recovered from two grassy weeds, wild oats and rat-tail fescue, at 2 of the 4 fields.
Tentative species identification as Trionymus haancheni, the Haanchen barley mealybug, is based solely on the fact that T. haancheni is the only mealybug known from cereals in Idaho. If expert examination confirms that these insects indeed are the Haanchen barley mealybug, these collections potentially constitute a significant change in host-plant range. Based on the best information currently available (i.e., research conducted by Juan M. Alvarez, University of Idaho), barley is considered the main host plant.
The first specimens were collected 22 May from a direct-seeded barley field that had been planted to winter wheat during 2006 and spring canola during 2005. Based on my 29 May site visit with Mr. Tom Gehring, Manager, Primeland Coop (Cottonwood), we estimated that approximately 5% of the field showed obvious damage in patches up to 50 X 50-feet where plants were stunted, yellowed, spotted or dead.
Mr. Gehring subsequently collected specimens at the other sites during the week of 4 June, and my subsequent visit today (8 June) again confirmed mealybug infestations in spring oats as well as on the weedy rat-tail fescue, Vulpia myuros. At all sites, bugs primarily were feeding on plant stems near the soil surface under field residue, though some also were collected from exposed leaves.
Barley growers in surrounding counties particularly might examine fields showing "wireworm spots" or similar patchy damage. Photos of the insect and pest biology are in University of Idaho Extension Publication CIS 1109, online at http://info.ag.uidaho.edu/pdf/CIS/CIS1109.pdf.
This information was provided by Dr. Ed Bechinski, Professor of Entomology,
Extension IPM & Pesticide Safety Education Coordinator at the University of Idaho.
2007 PNW Potato Insect Management Guidelines
Potato All Locations
Posted on: June 4, 2007 by Jerry Neufeld
The 2007 guidelines for managing insects in potatoes in the Pacific Northwest have been posted to the web. The document is authored by Alan Schreiber, Agriculture Development Group, Inc., Andrew Jensen, Washington State Potato Commission, Keith Pike, Washington State University and Gary Reed, Oregon State University. These guidelines are an update of the 2006 version. Changes include such things as: There are some products that are no longer registered on potatoes (such as Di-Syston and Guthion). There are several new products (such as Acramite and Beleaf) registered on potatoes. There are some changes in use patterns (such as Penncap M is no longer recommended for use on aphids, Assail is recommended for use on beet leafhopper). There are two significant additions to the guidelines. First, with the help of Juan Alvarez (U of Idaho), Idaho is included. Second, because of the surge in generic products, what is in what package is increasingly difficult to track. An attachment is included that lists every insecticide (398) registered for use on potatoes in Washington and Oregon. With the exception of a very small number of 24c registrations, this list should apply equally to Idaho. A list of 24c registrations in Idaho can be found at the following website: http://www.agri.state.id.us/Categories/Pesticides/registration/Section24cmain.php. The products are sorted by active ingredient, and include the product name, manufacturer and whether it is available as a 24c registration.
The document can be accessed by clicking on “Crop Info”, “Potato” and “2007 PNW Potato Insect Management Guidelines” or by going to the following web address: http://www.potatoes.com/Research-IPM.cfm.
Snake River Weed Research Tour
Announcements All Locations
Posted on: May 23, 2007 by Nora Olsen
Mark your calendars now for the Snake River Weed Research Tour. The tour will be held at the Aberdeen R&E Center on June 19 and at the Kimberly R&E Center on June 20. Both locations will start with registration at 8:00 am and the tour begins at 8:30. They will conclude with an industry sponsored lunch at 12:00.
At Aberdeen the tour will focus on weed control research in potatoes.
At Kimberly the tour will feature weed control research in Roundup Ready sugar beets, spring wheat and barley, field corn, and potatoes.
For more information, contact Don Morishita at 736-3600 or Pamela Hutchinson at 423-4691.
Approved Section 18 and 24c labels
Announcements All Locations
Posted on: May 10, 2007 by Jerry Neufeld
A complete list of approved section 18 and 24c labels for Idaho and Oregon can be found at the following links:
Idaho
http://www.agri.state.id.us/Categories/Pesticides/registration/Section18.php
http://www.ag.uidaho.edu/ipm/24C%20labels.htm
Oregon
http://www.pnn.wsu.edu/pnnor.html#Section24cs
Approved Section 18 & 24c Labels for Idaho, 2007
Announcements All Locations
Posted on: May 1, 2007 by Jerry Neufeld
To view the current list of Section 18 and 24c labels for Idaho click on the following links: "Crop Info" "Announcements" and "Approved Section 18 and 24c Labels for Idaho, 2007".
sugarbeet root maggot
Sugarbeets All Locations
Posted on: April 19, 2007 by Jerry Neufeld
Field representatives from the Amalgamated Sugar Company are reporting adult sugarbeet root maggot flies have emerged and are flying. GDD models indicate peak flight will be in the next few days. This is quite a bit earlier than in the past few years.
Adult flies will lay eggs near the sugarbeet plants 3 to 10 days after they emerge. After the larvae hatch they will begin feeding on the young sugarbeets. Potential maggot damage could be worse this year since there are so many replanted fields with small beets at the time the maggots are feeding. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, contact your White Satin fieldman for further information.
stripe rust
Small Grains All Locations
Posted on: April 18, 2007 by Jerry Neufeld
Predictions earlier this year for stripe rust in small grains were for low levels of disease. However, recent weather conditions have favored the development of rust in areas where it is endemic. While this does NOT mean we will see the disease in our area, we will continue to monitor the spread of stripe rust in the PNW. Alerts will be posted as needed to the following websites: http://www.ag.uidaho.edu/scseidaho/ and PNWPestAlert.net.
If you should see any rust development, PLEASE REPORT THE LOCATION AND VARIETY AFFECTED to Juliet Windes (jwindes@uidaho.edu) 208-529-8376, Chad Jackson (chadj@uidaho.edu), Tod Shelman(tshelman@uidaho.edu) (both at 208-397-4181) or to your local county extension educator. By tracking the disease, we can post timely alerts and provide growers with the most current recommendations for control, should that be necessary.
Juliet Windes Cereals Agronomist and Pathologist University of Idaho, Aberdeen and Idaho Falls.
2007 Treasure Valley Bean School
Announcements All Locations
Posted on: January 29, 2007 by Jerry Neufeld
The 2007 Treasure Valley Bean School will be held on Monday February 26, at the Oregon Trail Church of God Gymnasium (23057 Old Highway 30, Caldwell; Exit 25 on I-84) from 8:00 am to 1:30 pm. BBQ lunch will be served. Pesticide license credits are pending.
Topics will include:
• Dry Bean Breeding Research Update.
• Pesticide Applicator Enforcement Violations and Concerns,
• Seed Treatments,
• Idaho Bean Commission Work in Mexico,
• Idaho Bacterial Blight Association.
There is no cost to attend, but you must RSVP to the Canyon County Extension office at 459-6003 by February 21. Call Jerry Neufeld at the 459-6003 if you have any questions.
Weed Control Short Course
Announcements All Locations
Posted on: January 26, 2007 by Jerry Neufeld
On February 14 (8AM to 5 PM) and 15 (8AM to Noon) Oregon State University Extension will be offering a weed short course on many topics of interest. The program will be held at the Four Rivers Cultural Center in Ontario. This program costs $50 if you register before January 31st, and costs $55 after January 31st. The registration cost includes lunch on the 14th. We expect the event will provide 11 to 12 hours of Oregon and/or Idaho Pesticide Credits. If you are interested please call Lynn Jensen at 541-881-1417.
Topics include: Mode of Action of Herbicides, Glyphosate Resistant Weeds, Herbicide Persistence in the Soil, Invasive Weeds, Gene Flow from Crops to Weeds, Weed Seed Dispersal and Viability in the Soil, Grass Seedling Identification, Weed Control in Corn and Sugarbeets, White Top Biology and Control, Yellow Nutsedge Biology and Control, Fate and Behavior of Typical and Alternative Herbicides, Reducing Pesticide Drift Through Weather and Climate Information, Right of Way Weed Control.
U of I Crop Protection Meeting Feb. 6 (Idaho Falls) and 7 (P
All Crops All Locations
Posted on: January 2, 2007 by Jeff Miller
The 2007 University of Idaho Crop Protection Seminar will be held February 6 at the Shilo Inn in Idaho Falls and February 7 at the Ramada Inn in Pocatello. The program begins at 8:30 and ends at 4:45 and is identical at both locations. Meeting attendees can obtain 6 ISDA pesticide recertification credits (3 in the morning and 3 in the afternoon) and 6.5 Pest Management Certified Crop Advisor credits (CCA, 3 in the morning and 3.5 in the afternoon). Lunch is provided by the meeting sponsors at no cost. Please RSVP to Jeff Miller by phone (208-397-4181 ext. 108) or email (jsmiller@uidaho.edu) by February 2 so that we can plan appropriately for lunch. Sponsors for the meeting include: Amvac, BASF, Bayer, Dow, DuPont, FMC, Gowan, Northwest Ag Products, Syngenta Crop Protection and Seed Treatment, and Valent.
U of I Crop Protection Meeting Feb. 6 (Idaho Falls) and 7 (P
Announcements All Locations
Posted on: January 2, 2007 by Jeff Miller
The 2007 University of Idaho Crop Protection Seminar will be held February 6 at the Shilo Inn in Idaho Falls and February 7 at the Ramada Inn in Pocatello. The program begins at 8:30 and ends at 4:45 and is identical at both locations. Meeting attendees can obtain 6 ISDA pesticide recertification credits (3 in the morning and 3 in the afternoon) and 6.5 Pest Management Certified Crop Advisor credits (CCA, 3 in the morning and 3.5 in the afternoon). Lunch is provided by the meeting sponsors at no cost. Please RSVP to Jeff Miller by phone (208-397-4181 ext. 108) or email (jsmiller@uidaho.edu) by February 2 so that we can plan appropriately for lunch. Sponsors for the meeting include: Amvac, BASF, Bayer, Dow, DuPont, FMC, Gowan, Northwest Ag Products, Syngenta Crop Protection and Seed Treatment, and Valent.
Pesticide Applicator Recertification Training
Announcements All Locations
Posted on: December 4, 2006 by Jerry Neufeld
A pesticide re-certification training will be held on Tuesday December 19, 2006. Registration starts at 8:00 am at the Caldwell Police Department public meeting room (110 S 5th). The program will end at 4:15 pm. Among the topics will be; West Nile Virus and Mosquito Abatement Districts, Noxious Weeds in Idaho, Potato Cyst Nematode Update, Iris Yellow Spot Virus in Onions and Pesticide Applicator Enforcement Violations and Concerns. Idaho license holders will receive 6 credits. Six Oregon and CCA credits have been applied for. Registration is $30.00 and includes lunch and breaks. You must call the Canyon County Extension office at 208.459.6003 to RSVP so we have a head count. However, you still pay your registration at the door.
evaluation prizes
Announcements All Locations
Posted on: December 4, 2006 by Jerry Neufeld
Thanks to everyone that participated in the TV/PNWPestAlert.net evaluation survey. We will use the information you submitted to make the website better suit your needs.
The winners of the $75.00 gift certificates to Outback Steakhouse are Jeff Harper and Virgil Story. I will put the certificates in the mail ASAP.
Potato Disease Management Meeting
Potato All Locations
Posted on: November 27, 2006 by Jeff Miller
University of Idaho Potato Disease Workshop
December 11, 2006
Best Western Conference Center
800 N. Overland Ave.; Burley, ID
Potato Growers and Consultants:
Come to learn the latest information on managing diseases of potato (along with a little information on sugarbeets). Presentations will be given on using chemical and cultural practices to manage soilborne, foliar, and storage diseases of potatoes.
8:30-9:00 Effect of metam sodium on potato disease control.
9:00-9:30 Fungicides for pink rot control.
9:30-10:00 Interaction of seed piece spacing and fungicides for Rhizoctonia control.
10:00-10:15 Break
10:15-11:00 Fungicides and disinfestants for post-harvest potato disease control.
11:00-11:30 Effect of in-furrow fungicides on early blight control.
11:30-12:00 Seed treatment vs. in-furrow insecticides for insect control.
12:00-1:00 Lunch on your own.
1:00-1:30 Timing of fungicides for most effective white mold control.
1:30-2:00 Fungicide control options for managing black dot.
2:00-2:30 Effect of pyraclostrobin for disease control on sugarbeets.
2:30-3:00 Effect of early blight fungicide program on late blight protection.
3:00-3:30 Discussion of future research needs.
Presentations will be given by Dr. Jeff Miller (University of Idaho) and Dr. Terry Miller (Miller Research, Inc.) and will focus on new results from fungicide and insecticide trials relating to product rates, application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations.
Please contact Jeff Miller at 208-397-4181 for additional information.
5 ISDA Pesticide Recertification credits will be awarded (3 for the morning, 2 for the afternoon). CCA (Pest Management) credits have been requested.
There is no cost to attend the meeting.
PCN Update
Potato All Locations
Posted on: November 6, 2006 by Jeff Miller
11/3/06
SITUATION UPDATE
Officials of USDA's Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, in two additional fields, one in Bingham and one in Bonneville County near Shelley. The identifications of the nematodes were confirmed October 30. The two new fields are within the regulated area and all infested fields are within one mile of a central point in the regulated area. This brings the total number of infested fields to seven.
Opportunities for additional survey activity in seed growing areas and production areas elsewhere in Idaho are beginning to wind down due to freezing weather. Growers who wish to participate in the survey are urged to sign up as soon as possible. A sign-up sheet is available at www.ag.uidaho.edu/potatopath/alerts.htm.
SITUATION SUMMARY
On April 19, 2006 officials of USDA's Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is was the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA grader facility in eastern Idaho. In that survey, more than 3,500 samples were analyzed from across all of Idaho’s commercial and seed production areas, and only one was positive.
On August 29, 2006, state and federal officials announced the establishment of a regulatory area near Shelley. The regulated area spans about 10,000 acres including about 3500 acres of potatoes. In this particular area, growers have been advised to have their fields sampled for potato cyst nematode in an effort to speed the delivery of their products to market. Growers are also required to have equipment cleaned and sanitized before they may leave the regulated area or before leaving an infested field within the regulated area. This process will help prevent the spread of potato cyst nematode.
SURVEY UPDATE
To date, the on-going investigation has collected and tested more than 29,319 samples from approximately 648 fields and facilities. Of the two new identified infested fields, one is in northern Bingham County and the other is in southern Bonneville County. All seven positive fields were confirmed positive for PCN based on morphological and DNA analyses. All infested fields are within one-mile of a central point in the regulated area near Shelley. Survey in the regulated area is getting closer to completion, and additional lab tests are pending. Personnel active in the incident currently stands at 83 USDA and 18 state personnel.
Credit update for IAPP annual meeting
Announcements All Locations
Posted on: October 27, 2006 by Jeff Miller
This is another reminder of the annual meeting of the Idaho Association of Plant Pathology in Jerome, ID on November 8-9. Registration ($15.00) will begin at 12:30 pm on Wednesday with the program running from 1:00 to 5:00. Wednesday will be devoted to presentations dealing with potato diseases. The Thursday program will go from 8:00 am to 12:00 noon and will cover sugarbeets, fruit, and small grains.
Three CCA (pest management) credits will be available each day. Two ISDA pesticide recertification credits are available on Wednesday and three will be given on Thursday.
Please respond to Jeff Miller by phone (208-397-4181) or email (jsmiller@uidaho.edu) if you will be attending or if you need additional information.
2006 Idaho Association of Plant Pathology annual meeting
Announcements All Locations
Posted on: October 17, 2006 by Jeff Miller
The 2006 Idaho Association of Plant Pathology will be meeting November 8-9 at the Best Western Sawtooth Inn and Suites in Jerome, ID. The topics to be presented at the program can be found on the web at:
http://www.ag.uidaho.edu/potatopath/meetings/program2006.htm
Registration begins on Wednesday, November 8 at 12:30 and the program will begin at 1:00. CCA and Idaho State Pesticide credits have been requested and a follow-up alert will be published indicating the number granted.
Please contact Jeff Miller at jsmiller@uidaho.edu or 208-397-4181 for more information.
PCN Update for October 2
Potato All Locations
Posted on: October 2, 2006 by Jeff Miller
Potato Cyst Nematode (PCN)
Stakeholder Update
(10/2/06)
SITUATION UPDATE
Officials of USDA's Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, in three additional fields in Bingham County near Shelley. The identifications of the nematodes were confirmed Wednesday, September 27. The three new fields are within the regulated area and all infested fields are within one mile of a central point in the regulated area.
SITUATION SUMMARY
On April 19, 2006 officials of USDA's Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is was the first detection of the pest in the United States. The nematode cysts were detected during a routine
survey of tare soil at an ISDA grader facility in eastern Idaho. In that survey, more than 3,500 samples were analyzed, and only one was positive.
On August 29, 2006, state and federal officials announced the establishment of a regulatory area near Shelley. The regulated area contains about 10,000 acres. In this particular area, growers have been advised to have their fields sampled for potato cyst nematode in an effort to speed the delivery of their products to market. Growers are also required to have equipment cleaned and sanitized before they may leave a field in the regulated area. This process is believed to help prevent the spread of potato cyst
nematode.
SURVEY UPDATE
To date, the on-going investigation has collected and tested more than 16,603 samples from approximately 355 fields and facilities.
As part of these investigations, three new additional fields have been identified in northern Bingham County. That means a total of 5 fields have been confirmed positive for PCN based on morphological and DNA analyses.
All infested fields are within one-mile of a central point in the regulated area near Shelley.
Survey in the regulated area is nearly complete, and will be finished by the end of this week.
Personnel active in the incident and currently stands at 107 USDA and 17 state personnel.
Organic Cropping Systems Field Day
Announcements All Locations
Posted on: September 18, 2006 by Jeff Miller
The Northwest Coalition for Alternatives to Pesticides, the Potato Growers of Idaho, and the University of Idaho are holding an Organic Cropping Systems Field Day on Wednesday, October 4 from 1:00 to 4:00 pm near Blackfoot. Potatoes, barley, sweet corn, and alfalfa will be featured.
The following presentations will be given:
Organics: Consumer Interest and Market Opportunties (Jennifer Miller and Keith Esplin)
USDA Organic Certification Program (Margaret Misner)
Organic Potato Harvest Tour and Rotation Crops (Bryan Hopkins)
Organic Barley Production (Juliet Windes)
Organic Potato Cropping Systems: Three Examples (Fred Bossy, Mike Heath, and Nate Jones)
Organic Potato Storage (Nora Olsen)
To get to the field, take exit 89 off I-15 and turn west. Take an immediate right to go north for 0.5 miles and then west for 2.3 miles on Riverton Rd. Turn left onto Blackhawk Rd. and travel south for 0.5 miles. Turn west into the field.
Pesticide disposal for eastern and south central Idaho
Announcements All Locations
Posted on: September 15, 2006 by Jeff Miller
The Idaho State Department of Agriculture is sponsoring their fall pesticide disoposal program. Disposal of all pesticides is free (first 1,000 pounds), but disposals MUST be pre-registered.
Information on the program can be found at the ISDA web site at:
http://www.agri.state.id.us/Categories/Pesticides/pdp/indexdisposalmain.php
If the link above does not work, go to the following link:
http://www.agri.state.id.us/
Click on "Pesticides and Chemigation" on the left hand side of the page. At the next page click on "Pesticide Disposal" o the left hand side of the page.
On the pesticide disposal page, click on the "PDP Fall 2006 Schedule" link to see the pdf file outlining the details of the disposal program.
Idaho Association of Plant Pathology Annual Meeting
Announcements All Locations
Posted on: September 8, 2006 by Jeff Miller
The 2006 annual meeting of the Idaho Association of Plant Pathology will be held in Jerome, ID at the Best Western Sawtooth Inn and Suites on November 8-9, 2006. Short presentations (15-20 minutes) will be given on plant disease research results, observations, unusual disease occurrences, etc. Anyone interested in giving a presentation should contact Jeff Miller no late than October 2. A final program with the listing of topics will be available in early October. Certified Crop Advisor (CCA) and Pesticide Recertification credits (ISDA) will be available.
Registration begins at 12:30 p.m. on Wednesday Nov. 8 and the program will begin at 1:00 p.m. Registration costs $15.00 and can only be made by check or cash. Hotel reservations at the Best Western Sawtooth Inn can be made by calling 208-324-9200. Indicate you will be attending the IAPP meetings. Regular rooms are available at the corporate rate of $69.95, but reservations must be made prior to October 15.
To register, please contact Jeff Miller:
Phone: 208-397-4181
Fax: 208-397-4311
Email: jsmiller@uidaho.edu
Information is also available on the web at:
www.ag.uidaho.edu/potatopath/meetings/IAPP.htm
PCN regulatory plan released
Potato All Locations
Posted on: August 30, 2006 by Jeff Miller
Yesterday the USDA/Aphis and the Idaho State Department of Agriculture released a regulatory plant aimed at preventing the spread of Potato Cyst Nematode (PCN) beyond the isolated region in eastern Idaho where it has already been found.
A pdf file containing the press announcement, the regulatory plan, questions and answers relating to the plan, along with a map of the regulated area can be found at:
http://www.ag.uidaho.edu/potatopath/alerts/pcn.html
PCN Update for August 20 and sample sign up form
Potato All Locations
Posted on: August 21, 2006 by Jeff Miller
Potato Cyst Nematode (PCN) Stakeholder Update (8/20/06)
A federal regulatory work plan for Potato Cyst Nematode (PCN) is nearing completion. The work plan will result in a federal order which will regulate the interstate movement of potatoes and other articles from an area surrounding the infested fields near Shelley, Idaho.
While details of the work plan are still pending, growers in the Shelley area are urged to participate in field soil surveys for several reasons:
Survey data must be collected to make sure that the extent of the PCN infestation is limited to the regulated area.
Potatoes from fields that have been surveyed and found negative for PCN may be moved with fewer restrictions than potatoes from unsurveyed fields.
Additional detections of PCN within the regulated area could allow implementation of measures that would prevent further spread.
As the federal order is implemented, the necessity of the Idaho State Department of Agriculture Quarantine issued April 27, 2006, will be evaluated and if necessary, state rules may be promulgated to parallel the federal order.
Because of the potential for PCN to be spread on potato seed, it appears to be in the interest of Idaho seed potato growers to demonstrate that their product is free of PCN. This can be done through the official sampling provided by USDA and ISDA. The PCN project is designed to provide survey data covering all seed production areas.
Some foreign and domestic consumers of Idaho potatoes have expressed concern that Idaho production areas are free from PCN. To restore lost foreign markets and retain current foreign and domestic markets, it is important to demonstrate that there is not a general infestation of PCN throughout Idaho. Therefore, the PCN project plans surveys across the entire state’s potato production area.
PCN project personnel will have a limited window of opportunity to collect soil samples for survey after harvest. The PCN project will prioritize survey schedules to meet requirements in the proposed regulated area, then seed fields, then production areas. Early sign-up could negate or minimize delays in getting product to market.
LATE SEASON REQUESTS FOR FIELD SAMPLING COULD EXCEED THE CAPACITY OF PCN PROJECT SAMPLING CREWS. PRODUCERS SHOULD SIGN UP FOR SAMPLING AT THE EARLIEST POSSIBLE DATE PRIOR TO HARVEST.
A pdf version of the "Voluntary survey for potato cyst nematode in Idaho" signup form can be found at the University of Idaho potato pathology website:
www.ag.uidaho.edu/potatopath
Click on "Alerts", then click on "Potato Cyst Nematode Updates" to get to the link to the form.
Updates and related information:
· ISDA and APHIS continue to search for the original PCN source. A trace of seed sources for the first positive field has been completed, but did not yield any helpful information. Investigation into seed sources for the second positive field is progressing. Investigators continue to examine other possibilities for introduction of PCN into Idaho, including imported farm equipment, nursery stock, foreign flower bulbs, illicit potato seed importation, and other means.
· The two positive fields are under federal restrictions (no more potatoes to be planted, no soil to leave and equipment to be cleaned). Plans are in place to provide safeguards when the current crop of potatoes from the second positive field is transported to a nearby processing plant.
· Canada, Mexico and Korea have stopped importation of Idaho potatoes. Japan has stopped importation of U.S. potatoes.
· Officials from ISDA and APHIS continue to work with trade partners to inform them of the PCN response and recovery program in Idaho. Both agencies are answering Japan’s questions about the PCN situation in Idaho in an effort to reopen the Japanese market to U.S. chipping potatoes.
· Idaho and national potato industry officials continue to work closely with ISDA and APHIS to encourage cooperation by growers, packers and processors to insure that delimiting surveys are conducted swiftly and efficiently.
SITUATION SUMMARY
On April 19, 2006, officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida,a major pest of potato crops. This was the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA grader facility in eastern Idaho. In that survey, more than 3,500 samples were analyzed, and only one was positive. That survey, conducted as part of Cooperative Agricultural Pest Survey (CAPS), is designed to demonstrate that areas are free of exotic nematodes or, if they are present, to detect them as soon as possible after their introduction into domestic production systems.
On June 13, 2006, soil samples collected from a 45-acre field in northern Bingham County tested positive for PCN. On July 12, 2006, a soil sample from a second 60 acre field in Bingham County tested positive. The second positive finding was not surprising because of the field’s proximity to the already-identified positive field. ISDA and APHIS officials continue to believe the PCN infestation in eastern Idaho is isolated because of the more than 7,355 additional samples taken since the April detection, all have been negative for PCN except for those from the two fields. The 7,355 samples taken since April are from investigations involving 39 production fields, 22 seed potato fields, and 56 facilities. Additional surveillance will continue.
The goals of APHIS and ISDA in the Potato Cyst Nematode Response and Recovery Program are to:
Prevent the spread of PCN
Delimit the current infestation
Restore lost foreign markets
Preserve current markets.
Potato tuberworm
All Crops All Locations
Posted on: August 10, 2006 by Jeff Miller
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. “It is important to note that most of Idaho is PTW free, based on last year’s survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections,” reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMP’s) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. “As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary,” Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 20
Potato All Locations
Posted on: August 10, 2006 by Nora Olsen
ISDA
News Release
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. It is important to note that most of Idaho is PTW free, based on last years survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections, reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMPs) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary, Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 20
Potato All Locations
Posted on: August 10, 2006 by Nora Olsen
ISDA
News Release
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. It is important to note that most of Idaho is PTW free, based on last years survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections, reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMPs) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary, Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 20
Potato All Locations
Posted on: August 10, 2006 by Nora Olsen
ISDA
News Release
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. “It is important to note that most of Idaho is PTW free, based on last years survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections,” reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMPs) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. “As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary,” Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 20
All Crops All Locations
Posted on: August 10, 2006 by Nora Olsen
ISDA
News Release
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. “It is important to note that most of Idaho is PTW free, based on last year’s survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections,” reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMP’s) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. “As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary,” Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 20
Potato All Locations
Posted on: August 10, 2006 by Nora Olsen
ISDA
News Release
ISDA Survey Catches First Potato Tuberworm (PTW) Adult of 2006 Season
Idaho State Department of Agriculture entomologist, Ben Simko reported the first potato tuberworm (PTW) adult moth captured in a pheromone trap near Parma, Idaho on August 1. The potato tuberworm is a small insect that can infest both potato foliage and tunnel into tubers with the potential of causing significant crop damage. “It is important to note that most of Idaho is PTW free, based on last year’s survey, and no live worms or tuber damage associated with this insect was ever found despite, extensive inspections,” reports Michael Cooper Plant Industries, deputy administrator. The pest emerged as a serious new pest of potatoes in the Hermiston, OR area in 2002. It has also spread to production areas in the Columbia Basin in south central Washington State where growers claim spending $150-200 per acre on PTW control measures. Last year, University of Idaho and ISDA cooperated on a detection survey to track insect numbers and distribution in the Gem state. According to Simko, so far, numbers of PTW in Idaho still remain extremely low based on numbers captured in special PTW traps. The 2005 survey captured low numbers of PTW in three counties; Canyon, Elmore, and Payette. With over 450 insect traps deployed across southern Idaho last season, only 19 moths were confirmed as PTW positives.
As planned, this season, ISDA started to survey in the three positive counties in late May. In the Magic Valley and eastern Idaho, were no PTW moths have been detected, the department started trap surveys last week.
University of Idaho and ISDA will co-host an informational meeting Wednesday, August 16 from 12 – 1 p.m. at the University of Idaho Parma, Experiment Station to update area growers and processors on the situation. Recommended Management Practices (RMP’s) drawn up by the two agencies will be discussed along with a review of the insect life cycle.
Simko cautions potato growers to stay vigilant until we have a better idea of PTW population trends and damage threats in the various Idaho environments. “As with any new pest threat, we need to keep it in the context of a total potato IPM system, including use of cultural practices, economic thresholds and applying insecticide treatments only when necessary,” Simko advises.
More information on the Potato Tuberworm can be found at the ISDA website, PTW link, www.idahoag.us
powdery mildew in sugarbeets
Sugarbeets All Locations
Posted on: July 21, 2006 by Jerry Neufeld
Dr. John Gallian, Extension Plant Pathologist and Sugarbeet Specialist at the University of Idaho, Twin Falls R&E Center recently posted this message to the UIsugarbeet-INFO digest regarding powdery mildew in sugarbeets.
Bayer CropScience has a 2(ee) label for Gem Fungicide that allows for the application of Gem 25WG at the reduced rate of 5 oz/acre in combination with a minimum of 5 lb/acre of micronized wettable or dispersible sulfur. Although the 2(ee) label does not specify where the reduced rate should be used, Bayer's sales recommendation specifically states "In the Magic Valley or where powdery mildew pressure is usually less severe and residual control requirements are less, Gem may be used at a reduced rate of 5 oz/acre tank mixed with 5 lbs/acre micronized or dispersible sulfur per our ID/OR 2(ee)=85.".
I understand that this reduced rate is being recommended and applied in the Treasure Valley. I STRONGLY recommend against applying the reduced rate in the Treasure Valley where disease pressure is high! Gem, Headline, and Topsin are all at risk for resistance in powdery mildew to develop. Using less than the full rate of an "at risk" fungicide greatly increases the probability of selecting a resistant pathogen population.
In the Treasure Valley, I recommend that if Gem is to be used, only the full 7 oz/acre rate, tank mixed with a minimum of 5 lbs/acre sulfur, be applied at the earliest opportunity. At-risk fungicides should be used early in the epidemic when the pathogen population is low - just before or immediately after powdery mildew is first detected. This treatment timing is appropriate with all registered fungicides in all locations. All at risk fungicides should be tank mixed with a minimum of 5 lbs/acre of sulfur for resistance management. We should do everything we can to preserve the efficacy of all our fungicides by following best management practices for avoiding resistance from developing.
For further information, visit our website at:http://www.uidaho.edu/sugarbeet/Managingfungresist.htm
Dr. John J. Gallian
Extension Plant Pathologist and Sugarbeet Specialist
University of Idaho, Twin Falls R&E Center
P.O. Box 1827
Twin Falls, ID 83303-1827
(208)736-3600 Fax: (208)736-0843
Web Page: www.uidaho.edu/sugarbeet/
PCN Update for July 18
Potato All Locations
Posted on: July 19, 2006 by Jeff Miller
Potato Cyst Nematode (PCN)
Stakeholder Update
(7/18/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is was the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA grader facility in eastern Idaho. In that survey, more than 3,500 samples were analyzed, and only one was positive.
On June 13, 2006, soil samples collected from a 45-acre field in northern Bingham County tested positive for PCN. Based on these survey results, and the more than 3,000 additional samples taken since the April detection, the PCN infestation appears to be isolated, but additional surveillance will continue.
Updates and related information:
A soil sample from a field located near the 45-acre field in northern Bingham County has tested positive for PCN. This is the second field to have a confirmed PCN finding. The positive finding is not surprising because of the field’s proximity to the already-identified positive field. ISDA and APHIS officials continue to believe the PCN infestation in eastern Idaho is isolated.
ISDA and APHIS continue to search for the PCN’s original source. A trace of seed sources has been completed, but did not yield any helpful information. Investigators continue to examine other possibilities, including farming practices, tillage equipment, irrigation sources and wildlife patterns.
Investigators continue to test fields that are located near the original 45-acre field or have equipment, tenants or personnel in common. Soil samples taken from those fields are being expedited to the University of Idaho nematology lab in Parma.
Two fields are under federal restrictions (no potatoes to be planted, no soil to leave and equipment to be cleaned).
Officials from the Idaho State Department of Agriculture and U.S. Department of Agriculture continue to work with trade partners on this issue. Both agencies are in the process of answering Japan’s questions about the PCN situation in Idaho. Japan has banned the import of all potatoes from the United States.
powdery mildew in sugarbeets
Sugarbeets All Locations
Posted on: July 10, 2006 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the western Treasure Valley (Homedale, ID; Vale and Adrian, OR areas). While there have been no reports of black bean aphids, loopers or armyworms, they typically show up about this time of year. As you scout your fields for powdery mildew, you may also want to be on the lookout for these pests. Contact your field representative from the Amalgamated Sugar Company if you have questions.
Malheur Field Day
Announcements All Locations
Posted on: July 6, 2006 by Clint Shock
YOU ARE INVITED TO THE
Malheur Experiment Station Annual Field Day
July 12, 2006 from 8:30 AM - 1:00 PM
The program will cover onions (thrips, IYSV, and more!) potatoes, small grains (including waxy barley), teff, wildflower seed production, poplar trees, soybeans, and noxious weeds. A complimentary lunch will be served. During lunch there will be a presentation by Sandy Halstead, Agricultural Specialist of the EPA. EPA is considering restrictions on the ways VAPAM can be used. VAPAM is an important product in growers' attempts to control yellow nutsedge. For more details on the program see http://www.cropinfo.net/events.htm
Please reserve lunch by calling Janet Jones
(541) 889-2174 Or emailing her at janet.jones@oregonstate.edu
Malheur Experiment Station
595 Onion Ave.
Ontario, OR 97914
Late blight forecast
Potato All Locations
Posted on: July 6, 2006 by Jeff Miller
Scattered thundershowers have made conditions ideal for late blight development. Fungicide treatment is recommended due to the favorable weather and the rapid growth of the crop in most places. Late blight was found in the Columbia Basin of Washington in late June.
PCN Update for June 23
Potato All Locations
Posted on: June 23, 2006 by Jeff Miller
Potato Cyst Nematode (PCN)
Stakeholder Update
(6/23/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is was the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA grader facility in eastern Idaho. In that survey, more than 3,500 samples were analyzed, and only one was positive.
On June 13, 2006, soil samples collected from a 45-acre field in northern Bingham County tested positive for PCN. Based on these survey results, and the more than 3,000 additional samples taken since the April detection, the PCN infestation appears to be isolated, but additional surveillance will continue.
Updates and related information:
Investigations revealed that over 80 fields operated by nearly 30 growers provided potatoes that passed through the ISDA grader facility on the day the positive tare dirt sample was collected. Fifty-six of those fields, operated by 25 growers in seven counties, were identified as high priority for sampling. The positive field was one of those fields.
Personnel from ISDA and APHIS continue to collect soil samples from potato fields and cellars in eastern Idaho. They are taking samples from fields that are associated with the positive field south of Idaho Falls as well as other fields throughout the Upper Snake River Plain. Only one field has been confirmed positive.
University of Idaho nematology lab in Parma is currently analyzing the samples, and ISDA is developing additional laboratory capacity in Twin Falls. APHIS is planning to establish laboratory capacity in Idaho Falls.
The two potato cellars which were regulated in April were released from their Emergency Action Notifications (EANs) June 19. All the samples taken at these cellars were analyzed and found to be free of PCN.
Currently, three fields and one packing shed are regulated under EANs. Under the EAN restrictions, no potatoes can be planted in the fields, no soil can leave the fields, and equipment leaving the fields must be cleaned of soil. APHIS and ISDA provide a cleaning service for the equipment when requested. Two of the fields were highly suspect based on the original tare dirt sample analyzed in April. So far, all samples from those fields have been negative for PCN. If analyses of all samples are completed and they are found to be free of PCN, those fields can be released. The third field was determined to be infested with PCN and will be subject to ongoing regulations which will be developed as the situation continues to be evaluated.
The packing shed is currently prohibited from allowing sediment in the settling pond to be dumped without burial at an approved site. Upon disposal of the sediment currently in the pond, that shed will be completely deregulated.
Questions and Answers
Question: Is it true that PCN is present in Europe and is easily managed?
Answer: PCN is present in several European countries, and it is under Official Control in the areas where it exists. Official Control programs place restrictions on growers and shippers so that spread and increase of the nematode population is minimized. PCN is a regulated quarantine pest on the world scene. Some of the management practices that are used in Europe and other locations where PCN is present include long rotations (5+ years between potato crops), use of resistant potato varieties, and chemical treatments. USDA and ISDA scientists do not believe that any of the potato varieties currently grown in Idaho are resistant to PCN.
Question: Is USDA confident of the identification of PCN in Idaho.
Answer: Yes. USDA utilized a multiple step process at the Beltsville Laboratory to confirm the identification of PCN from the original tare dirt sample and the field. Nematode cysts and juvenile nematodes were subjected to a microscopic examination which utilized shape, size, and structural characteristics to compare the specimens with known PCN. Then, Beltsville scientists performed multistage DNA analyses on the larvae to reach a final conclusion that the nematodes are Globodera pallida. They also provided genetic material to the Nematology Laboratory at University of Nebraska where the confirmation was verified through independent testing.
Question: Can soil tests conclusively identify the field from which a sample was taken.
Answer: Current soil tests can show a relationship between a sample and the field from which it was taken. Soil samples have been analyzed by USDA Natural Resources Conservation Service to determine various soil properties so that tare dirt samples can be related to soil type and other geographically described soil areas. The APHIS laboratory in Gulfport Mississippi is conducting research on soil from fields associated with the tare dirt samples, the infested field, and other fields to test new technologies that may allow more specific characterization of soil to a specific site.
PCN Update
Potato All Locations
Posted on: June 16, 2006 by Jeff Miller
Potato Cyst Nematode (PCN) Stakeholder Update (6/15/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is was the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA Grader facility in eastern Idaho. In that survey, 3500 samples were analyzed, and only one was positive.
On June 13, 2006, soil samples collected from a 45-acre field in northern Bingham County tested positive for PCN. Production in the area is for fresh market and processed potatoes, not seed potatoes. The field is not within an Idaho Seed Potato Crop Management area, where safeguards assuring quality are monitored. As part of the investigation following the April detection, more than 2,500 samples representing over 60 fields and facilities associated with shipments that went through the grading station were tested. All other samples collected as part of the investigation have tested negative for PCN. Additionally, more than 3,000 Idaho soil samples taken since last fall as part of the Cooperative Agricultural Pest Survey (CAPS) from processing and fresh pack facilities and 500 samples taken from seed potato producers have been negative for PCN. Based on these survey results, and the more 2,500 samples taken since the April detection the PCN infestation appears to be isolated, but additional surveillance will continue.
Investigators from APHIS and ISDA are continuing to conduct interviews which determine where surveys and sample collection may be useful to ensure that the spread of the nematode is limited.
Preliminary identification of the nematodes was conducted by the University of Idaho (U of I) Nematology Laboratory, and the identity was confirmed by the USDA Nematology Laboratory in Beltsville, Maryland using both morphometric and molecular sequencing technologies.
The microscopic nematodes pose no threat to human health and never actually enter the tuber. However, they can reduce the yield of potatoes through root damage. There is no evidence that the quality or yield of potatoes grown in Idaho has been affected. However, there are significant trade implications.
Trading partners have reacted in various ways to the detection of PCN.
•Japan has suspended all potato imports from the U.S.
•Canada, Korea, and Mexico suspended potato shipments from the State of Idaho.
•Taiwan, Malaysia, and Singapore have asked for information, but have taken no action to suspend potato imports from the United States.
APHIS emergency action notifications (EANS) and ISDA restrictions have been imposed on the Bingham County field and other suspect sites. These state and federal actions restrict the movement of soil, plants, plant material and farm equipment which may have been exposed to the potato cyst nematode and they are intended to prevent the introduction and dissemination of the pest. To date, these restrictions have been imposed in Bingham, Bonneville, and Jefferson counties, but they are currently limited to only five six sites. Previously restricted fresh packed product has been released to move in commerce. Idaho potatoes and potato product are moving normally in domestic commerce.
Depending on the results of ongoing surveys, restrictions may be placed on areas surrounding infested fields. Idaho potato farmers, packers and processors continue to work closely with APHIS and ISDA to ensure that spread of the nematode and need for widespread regulations can be avoided.
Updates and related information:
The APHIS/ISDA unified command in Idaho Falls will continue in operation. Soil samples continue to be collected, focusing on land that is adjacent to the field where PCN was positively identified, and on properties that have shared equipment, labor or other resources with the field.
AHPIS/ISDA continue to gather information about seed sources for the infested field. That traceback continues with the full understanding that the seed source may have nothing to do with the field infestation. It may have originated with equipment, farm personnel, wind, wildlife or other sources. Those other possibilities continue to be explored as well.
APHIS/ISDA has not released the specific location of the field in question in order to prevent the spread of the infestation. One media report incorrectly pinned the location as Blackfoot, which is in central Bingham County. The field is actually in northern Bingham County.
ISDA and APHIS continue to regulate six sites and establishments: three fields, one packing shed, and two potato cellars. Two of the fields remain regulated while soil samples are examined, but have so far not yielded any positive PCN samples. Regulations on those two fields and the shed and cellars are expected to be released soon.
Approximately 28 different farm operations sent potatoes to the grader station on the day in February that the original positive soil sample was collected. Soil samples continue to be analyzed from more than 50 fields on these farms.
During its 25-plus year history, the U. of I. Nematology Laboratory at Parma, Idaho, has processed approximately 100,000 samples all of which have been negative for PCN until the most recent detection.
More than 20 APHIS, ISDA, and U of I personnel are currently working on the cooperative control program.
POTATO CYST NEMATODE TRACED TO SINGLE IDAHO FIELD
Potato All Locations
Posted on: June 14, 2006 by Jeff Miller
POTATO CYST NEMATODE TRACED TO SINGLE IDAHO FIELD
WASHINGTON, June 13, 2006–Scientists looking for evidence of potato cyst nematode (PCN) in Idaho today confirmed the presence of the pest in one eastern Idaho field.
The cysts were discovered in soil samples collected by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA). The soil was collected as part of the investigation into the April 19, detection of the pest, which was found in routine samples taken at a potato grading station in Idaho. The nematode does not pose any threat to human health, but can reduce the yield of potatoes and other crops. There is no sign that the quality of tubers grown in Idaho has been affected.
The soil samples that tested positive for PCN were collected from a 45-acre field located in northern Bingham County, south of Idaho Falls. Production in the area is for fresh market and processed potatoes, not seed potatoes. The field is not within an Idaho Seed Potato Crop Management area, where safeguards assuring quality are monitored. As part of the investigation, more than 2,500 samples representing numerous fields associated with the grading station were tested. All other samples collected as part of the investigation have tested negative for PCN. Additionally, more than 3,000 Idaho soil samples taken since last fall as part of the Cooperative Agricultural Pest Survey (CAPS) have been negative for PCN. Based on these survey results, the PCN infestation appears to be isolated, but additional surveillance will continue.
APHIS and ISDA are implementing a regulatory program at the positive site designed to prevent the pest’s spread to other fields. The program will restrict the movement of plants and soil, and require sanitation procedures for equipment used on the regulated field. Aggressive delimiting surveys are being conducted in areas associated with the PCN-positive field. Associated areas include those areas with geographic nearness, common usage of tillage equipment, common seed sources, common irrigation water or other means.
The potato cyst nematode, Globodera pallida, is a major pest of potato crops in cool-temperate areas. It primarily affects plants within the potato family including tomatoes, eggplants and some weeds. Potato cyst nematode infestations may be associated with patches of poor growth. Affected potato plants may exhibit yellowing, wilting or death of foliage–none of which has been observed in Idaho potato fields. If left unmanaged, nematodes can cause significant yield loss. The PCN is widely distributed in many potato-growing regions throughout the world. In North America, the nematode is also known to be present on the island of Newfoundland, Canada.
Early detection of pests minimizes agricultural production costs and enhances product quality and marketability. Crop rotation and the use of certified seed and nematicides (fumigants or granular systemic compounds) are effective and practical means of suppression.
Wayne Hoffman
Special Assistant to the Director
Idaho State Department of Agriculture
office (208) 332-8671
cell (208) 841-1305
home (208) 467-9257
email whoffman@idahoag.us
UI's Parma R and E Center Field Day
Announcements All Locations
Posted on: June 12, 2006 by Jerry Neufeld
The University of Idaho's Parma Research and Extension Center will showcase its work in small grains, forages and row crops at a July 7 field day for the public.
Beginning at 9 a.m. and concluding at lunch with a sandwich meal, this year's field day will highlight ongoing studies in wheat, barley, triticale, onions, potatoes, beans and alfalfa seed. Visitors will tour trials of promising new small grains in various market classes and will hear about the effects of harvest dates on triticale and wheat forage. They will learn about fertilizer management in small grains, including fall-planted waxy spring barleys and low-phytate spring barleys.
Participants interested in potatoes will see trials of new varieties for the Treasure Valley and studies focusing on phosphorus, groundcover effects, pesticide placement and seed physiology.
Visitors will also tour research on plant spacing and available phosphorus in alfalfa seed, on seed inoculation and treatment in beans, and on neckrot incidence and control of sunscald, thrips and nutsedge in onions.
Attendance is free and lunch will be provided. The Parma Research and Extension Center is located 1 mile north of Parma on UI Road. For more information, contact Extension crop management specialist Brad Brown at (208) 722-6701, Ext. 216, or bradb@uidaho.edu.
Potato cyst nematode update
Potato All Locations
Posted on: May 31, 2006 by Jeff Miller
Potato Cyst Nematode (PCN)
Stakeholder Update
(5/31/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA's Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is the first detection of the pest in the United States. The nematode cysts were detected during a routine survey of tare soil at an ISDA Grader facility in eastern Idaho. The initial identification of PCN in Idaho was made by the University of Idaho Nematology Laboratory in Parma, ID. The identification was confirmed through microscopic and DNA analysis by the USDA ARS Nematology Laboratory in Beltsville, MD.
The microscopic nematodes pose no threat to human health and never actually enter the tuber. However, they can reduce the yield of potatoes through root damage. There is no evidence that the quality or yield of potatoes grown in Idaho has been affected. However, there are significant trade implications.
Trading partners have reacted in various ways to the detection of PCN.
*Japan has suspended all potato imports from the U.S.
*Canada, Korea, and Mexico suspended potato shipments from the State of Idaho.
*Taiwan, Malaysia, and Singapore have asked for information, but have taken no action to suspend potato imports from the United States.
APHIS and ISDA are implementing actions to determine if the pest is actually distributed in fields in Idaho and, if so, prevent movement of PCN to uninfested areas. Officials are working cooperatively with Extension Service and the potato industry to provide Best Management Practices to deal with potato pest issues.
APHIS emergency action notifications (EANS) and ISDA restrictions have been imposed at suspect sites. These state and federal actions restrict the movement of soil, plants, plant material and farm equipment which may have been exposed to the potato cyst nematode and they are intended to prevent the introduction and dissemination of the pest. To date, these restrictions have been imposed in Bingham, Bonneville, and Jefferson counties, but they are currently limited to only five sites. Previously restricted fresh packed product has been released to move in commerce. Idaho potatoes and potato product are moving normally in domestic commerce.
Updates:
* APHIS has deregulated the tare dirt at two potato processing
plants. The action came after the facilities were determined to be free of PCN. Under APHIS/ISDA supervision, facility personnel were able to dispose of all the tare dirt that may have been associated with the potatoes that went through the grading station on the same day as the sample in which the PCN was discovered.
* With the release of the tare dirt at the two processing plants,
ISDA and APHIS continue to regulate the remaining five sites and
establishments: two fields, one packing shed, and two potato cellars.
o The fields are not allowed to be planted to potatoes in 2006, no
soil is to be moved from the fields, and equipment leaving the fields must be cleaned of soil.
o Soil in the settling basin at the packing shed must be moved to an
approved disposal site.
o Except for equipment which must be cleaned, nothing is to enter or
leave the cellars until they are released from the regulation.
* Soil samples are being collected from piler dirt at potato storage
facilities which provided potatoes to the grader station on the same day as the positive sample; if piler dirt is not available then fields that grew the potatoes will need to be sampled. Approximately 28 different farm operations sent potatoes to the grader station on the day in February that the original positive soil sample was collected. Growers are being very cooperative in assisting with tracking down the source of the nematodes. This is extremely important because the source needs to be detected as early as possible to avoid possible spread of the nematode into production areas. Likewise, if nothing is found, it could support the contention that this is "a transient actionable pest under surveillance" according to International Standards for Phytosanitary Measures No. 8 (ISPM 8). Piler dirt from ten growers was sampled during the past two weeks representing 19 fields with 37 samples.
* To date, more than 2500 soil samples have been collected in the
survey that began as a result of the PCN detection. This is in addition to the 3,000 soil samples collected since last August as part of the original detection survey. Samples sent to labs have yielded no additional potato cyst nematodes. Only the original sample of tare dirt taken at an Idaho potato grading station has produced potato cyst nematodes. Other types of cysts, commonly associated with cereal crops, have been detected, but these are ordinary detections of non-quarantine pests.
* ISDA and APHIS scientists are gathering information on used farm
equipment imported from countries where PCN is known to occur. This is based on the possibility that PCN may have been transported onboard foreign farm equipment. There is still no conclusive evidence that PCN originated in an Idaho potato field. Because of the possibility that the PCN did originate with an Idaho potato field, ISDA and APHIS continue to explore leads for sources of such an infestation, but so far, that search has not yielded any conclusive results.
A total of 21 APHIS and ISDA personnel are currently working on the cooperative control program. A representative of the Shoshone-Bannock Tribe is also assisting the PCN investigation.
Section 18, 24c and Crisis Exemption Labels
Announcements All Locations
Posted on: May 31, 2006 by Jerry Neufeld
A current list of Section 18 (Emergency Exemptions), Section 24c (Special Local Needs Labels) and Crisis Exemptions for the state of Idaho is available by clicking on “Crop Info,” “Announcements” and the “Section 18 and 24c Labels” button. A complete list of 24c labels can be found at the Idaho State Department of Agriculture’s website at http://www.agri.state.id.us/Categories/Pesticides/registration/Section24cmain.php.
Approved Crisis Exemptions, Section 18 and 24c Labels for I
All Crops All Locations
Posted on: May 31, 2006 by Jerry Neufeld
A current list of Section 18 (Emergency Exemptions), Section 24c (Special Local Needs Labels) and Crisis Exemptions for the state of Idaho is available by clicking on “Crop Info,” “Announcements” and the “Section 18 and 24c Labels” button. A complete list of 24c labels can be found at the Idaho State Department of Agriculture’s website at http://www.agri.state.id.us/Categories/Pesticides/registration/Section24cmain.php.
PCN Update
Potato All Locations
Posted on: May 15, 2006 by Jeff Miller
A new article on Best Management Practices for preventing the spread of soilborne pests such as the potato cyst nematode (PCN) has been prepared by the University of Idaho. The bulletin can be found at:
http://www.ag.uidaho.edu/potatopath/alerts/pcn.html
Here is the most recent update on the PCN situation:
Potato Cyst Nematode (PCN) Stakeholder Update
(5/15/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is the first detection of the pest in the United States. The microscopic nematodes pose no threat to human health and never actually enter the tuber, but can reduce the yield of potatoes through root damage. There is no evidence that the quality or yield of potatoes grown in Idaho has been affected. APHIS and ISDA are implementing actions to determine if the pest is distributed in fields in Idaho and, if so, prevent movement of PCN to uninfested areas. Officials are working cooperatively with Extension Service and the potato industry to provide Best Management Practices to deal with potato pest issues.
Updates:
A mechanical wheel sampler has arrived in Idaho. This will allow ISDA and AHPIS scientists to continue to collect soil samples from fields more efficiently, and use fewer surveyors. The sampler is used as a tractor implement run across a field filling soil sample bags mounted on the implement. The sampler is based on designs used for the Golden Cyst Nematode in New York. The sampler and tractor must be thoroughly cleaned with a high pressure washer before it can be moved from field to field. This procedure is in place to prevent inadvertent movement of any soil-borne pests. The first run of Idaho’s new mechanical wheel sampler took place on a seed potato field in southern Idaho last week. Pictures of the sampler are available from ISDA Public Information Officer Wayne Hoffman. Email whoffman@idahoag.us.
To date, soil samples collected total more than 2,500 in the survey that began as a result of the PCN detection. This is in addition to the 3,000 soil samples collected since last August as part of the original detection survey. Samples sent to labs have yielded no additional potato cyst nematodes. Only the original sample of tare dirt taken at an Idaho potato grading station has produced potato cyst nematodes. Other types of cysts, commonly associated with cereal crops, have been detected, but these are ordinary detections of non-quarantine pests.
ISDA and APHIS investigators continue to trace back possible sources of the potato cyst nematode, under an assumption that the PCN may have come from a potato field in Idaho. However, so far we have no conclusive evidence that this is the case. We are also exploring the possibility that the cysts may have been conveyed via machinery, clothing, wind, wildlife, or other means. All of these possibilities are under review by ISDA and APHIS scientists. Because of the possibility that the PCN did originate with an Idaho potato field, ISDA and APHIS continues to explore seed sources, but so far, that search has only yielded negative results.
A team of scientists recently discussed the potato cyst nematode situation in Idaho, and generally agreed with the steps being taken by ISDA and APHIS. The group also agreed that USDA’s potato cyst nematode identification data should be independently reviewed by a third party, as many nematodes have similar physical characteristics.
REGULATION
APHIS emergency action notifications (EANS) and ISDA restrictions have been imposed at suspect sites. These state and federal actions restrict the movement of soil, plants, plant material and farm equipment which may have been exposed to the potato cyst nematode and they are intended to prevent the introduction and dissemination of the pest. To date, these restrictions have been imposed in Bingham, Bonneville, and Jefferson counties, but they are limited to only seven sites which include fields, cellars and potato handling facilities. Previously restricted fresh packed product has been released to move in commerce. Potatoes and potato product are moving normally in domestic commerce.
PERSONNEL
Approximately 30 APHIS and ISDA personnel are currently working on the cooperative control program.
TRADE
Trading partners have reacted in various ways to the detection of PCN.
Japan has suspended all potato imports from the U.S.
Canada, Korea, and Mexico suspended potato shipments from the State of Idaho.
Taiwan, Malaysia, and Singapore have asked for information, but have taken no action to suspend potato imports from the United States.
Potato cyst nematode update
Potato All Locations
Posted on: May 4, 2006 by Jeff Miller
Many rumors have been circulated concerning the presence of the potato cyst nematode in Idaho. Unfortunately, many of these rumors are not true. As documented, confirmed information becomes available, it will be released through the Idaho State Department of Agriculture. Below is the most recent update on the current status of PCN. More information will follow.
Potato Cyst Nematode (PCN)
Stakeholder Update
(5/01/06)
SITUATION SUMMARY
On April 19, 2006 officials of USDA’s Animal and Plant Health Inspection Service (APHIS) and the Idaho State Department of Agriculture (ISDA) announced the detection of potato cyst nematode (PCN), Globodera pallida, a major pest of potato crops. This is the first detection of the pest in the United States. The microscopic nematodes pose no threat to human health and never actually enter the tuber, but can reduce the yield of potatoes through root damage. There is no evidence that the quality of potato tubers grown in Idaho has been affected. APHIS and ISDA are implementing actions to determine if the pest is distributed in fields in Idaho and, if so, prevent movement of PCN to uninfested areas. Officials are working cooperatively with the potato industry to provide Best Management Practices to deal with potato cyst nematode issues.
SURVEY
Program personnel are surveying fields and facilities that may be associated with the detected PCN. More than 1,000 soil samples have been collected from two adjoining suspect fields in eastern Idaho. Samples collected were sent to the University of Idaho Nematology Laboratory for initial screening and diagnostics. So far, none of the additional soil samples has tested PCN positive.
The source of the infestation has not been identified. The original soil sample came from ISDA-sampled tare dirt. Scientists conclusively identified 2 cysts as PCN in that sample. Additional cysts from that same sample have not been conclusively confirmed as PCN. No cysts have been discovered in any other field survey or sample to date. ISDA and APHIS are sampling suspect fields to trace the tare dirt sample to a field of origin so that it can be determined if the field is infested. Officials are also investigating the seed sources for the suspect fields.
REGULATION
APHIS emergency action notifications (EANS) and ISDA restrictions have been imposed at suspect sites. These state and federal actions restrict the movement of soil, plants, plant material and farm equipment which may have been exposed to the potato cyst nematode and is are intended to prevent the introduction and dissemination of the pest. To date, these restrictions have been imposed in Bingham, Bonneville, and Jefferson counties, but limited to seven sites which include fields, cellars and potato handling facilities. Previously restricted fresh packed product has been released to move in commerce. Potatoes and potato product are moving normally in domestic commerce. Japan, Canada, Mexico and Korea have placed restrictions on potato imports.
PERSONNEL
Approximately 50 APHIS and ISDA personnel are working on the cooperative control program at temporary facilities.
TRADE
ISDA, APHIS and potato industry officials are working with trade representatives from Canada, Japan, Korea, and Mexico to lift trade restrictions.
For addition information, or to receive the next PCN update contact:
Wayne Hoffman, ISDA (208) 332-8671
Claude Knighten, USDA (301) 734-5271
pesticide disposal
Announcements All Locations
Posted on: April 26, 2006 by Jerry Neufeld
The Idaho State Department of Agriculture is conducting a Pesticide Disposal Program at the Pickle Butte Landfill in Canyon County on Monday May 1, from 9:00 a.m. to 1:00 p.m. You can turn in up to 1,000 pounds of unusable pesticides for free. For more information go to the following website: http://www.agri.state.id.us/Categories/Pesticides/pdp/indexdisposalmain.php, or call Vic Mason at ISDA (465-8442) if you have questions.
Potato cyst nematode in eastern Idaho
Potato All Locations
Posted on: April 21, 2006 by Jeff Miller
An ealier alert posted today erroneously reported that potato cyst nematode was easy to control and that it caused little damage to the potato crop. This was misleading. Potato cyst nematode can cause serious yield reductions in potato. Additionally, control can be difficult for various reasons.
Information on the status of this problem will be forthcoming as more solid data becomes available.
Potato cyst nematode in eastern Idaho
Potato All Locations
Posted on: April 21, 2006 by Jeff Miller
The potato cyst nematode has been confirmed in Idaho from a tare dirt sample in eastern Idaho. The confirmation did not come from plant material. Further work is underway to learn more about the source of this potential source of the soil sample. This nematode is not particularly difficult to control, and does not cause extensive crop damage. The problem is that the nematode is a quarantine pest. All official information concerning this finding can be found at:
http://www.aphis.usda.gov/newsroom/content/2006/04/potatocyst_ppq.shtml
New potato IPM book available
Potato All Locations
Posted on: April 13, 2006 by Jeff Miller
FOR IMMEDIATE RELEASE
CONTACT: STEPHANIE KLUNK
March 28, 2006
(530) 754-6724
UC Statewide Integrated Pest Management Program releases pest management guide for potatoes
Growers and pest management professionals can now find the latest integrated pest management guidance for the potato tuberworm, a new, troublesome pest in the Pacific Northwest, in Integrated Pest Management for Potatoes in the Western United States, 2nd Edition.
The tuberworm has been recorded in California since 1856, and several times in the last 20 years it was found in the Columbia Basin of Oregon and Washington. However, it was not a major concern for growers in the Pacific Northwest until 2002, when a field with severe potato tuberworm damage was documented in Oregon. The pest is difficult to control and over the years, many farmers have relied extensively on the use of insecticides to control it.
Tuberworm is just one of many pests described in the updated IPM manual by the University of California Statewide IPM Program. Growers can find information on diagnosis and treatment for more than 120 potato pests and disorders—ranging from black scurf, which causes superficial damage, to late blight, which can destroy a whole crop. The guide includes 51 new color photos (bringing the total to 210), 58 tables and line drawings, a section on organic potato production, and a comprehensive index.
Protecting potatoes from insect infestations and diseases is essential to the production of a high-quality crop. The manual contains a new section on general predators and extensively revised sections on aphid management and virus transmission, leafhoppers and phytoplasma transmission, late blight, bacterial early dying, necrotic strains of Potato Virus Y, black dot, silver scurf, and using cover crops for nematode management. Included in the new edition are information on testing Colorado potato beetle populations for insecticide resistance, and a detailed discussion of differential host tests for identifying root knot nematode species and races.
Forty university researchers and Cooperative Extension specialists from across the West contributed to making this revision an up-to-date and essential reference for potato growers and pest management professionals.
More information on the potato tuberworm is also available on the UC Statewide IPM Program’s Web site at http://www.ipm.ucdavis.edu/PMG. Look under “potatoes.”
To order the potato IPM manual, contact ANR Publications, 1-800-994-8849, or www.anrcatalog.ucdavis.edu Ask for publication 3316.
Media Contact:
Stephanie Klunk, Communications Specialist
UC Statewide IPM Program
(530) 754-6724
STATEWIDE INTEGRATED PEST MANAGEMENT PROGRAM
UNIVERSITY OF CALIFORNIA, DAVIS
ONE SHIELDS AVENUE
DAVIS, CA 95616-8621
www.ipm.ucdavis.edu
Stripe Rust in Small Grains
Small Grains All Locations
Posted on: April 11, 2006 by Jerry Neufeld
Recent weather conditions in the Pacific Northwest are once again favorable for the development of stripe rust in small grains. Diana Roberts, PhD, Area Extension Agronomist with Washington State University predicted stripe rust presence from a forecasting model based on winter temperatures. The results were presented by Scott Yates in his article “Rust Expected to Hit Later This Year” in the Capital Press (February 24, 2006). The forecast results indicate that stripe rust will likely develop on susceptible varieties as severely as last year.
Although the forecast model indicates as equally severe stripe rust for 2006 as it was in 2005, Dr. Roberts says the disease will most likely start at least 2-3 weeks later in 2006. This is because of the following two factors. First, due to the lack of moisture last fall during planting time many winter wheat fields were planted in late October. The late plantings should have reduced stripe rust infection before the winter. Second, the cold weather last December prevented further development of stripe rust during the winter months. The cold period in mid February has further slowed winter wheat growth and should have also slowed rust development in infected plant tissue. Therefore, based on the forecast model and these considerations, we will likely have another severe stripe rust year in the PNW. The disease will start later than last year and the damage should not be as great as last year because the initial rust pressure will not be as high in 2006 and the growth period for stripe rust development will be shorter. However, stripe rust is capable of quickly developing and spreading if temperatures and moisture conditions are favorable. Recent Treasure Valley weather conditions were similar to those used in Dr. Robert’s stripe rust prediction model.
Most spring wheat varieties planted in the Treasure Valley have good adult plant stripe rust resistance; however, this does not preclude the need for field scouting to determine actual rust conditions in your fields. That is particularly true if you are growing a small grain variety that is not commonly grown in our area and you are not sure of its stripe rust susceptibility. According to Dr. Brad Brown from the University of Idaho’s Parma Research and Extension Center, it is not too early to scout your earliest fall planted winter grain fields for this disease. In addition, Dr. Brown expects later planted spring wheat will be the most susceptible to stripe rust in 2006.
Pesticide Safety in Spanish
Announcements All Locations
Posted on: February 23, 2006 by Jerry Neufeld
The University of Idaho Extension System and the Idaho State Department of Agriculture are conducting a Pesticide Safety Training in Spanish at Parma on March 14, and in Weiser on March 15, 2006. Pesticide Applicator Training Credits are pending. For additional information click on “Announcements” then “Pesticide Safety Training in Spanish.” Call Jerry Neufeld at 459-6003 if you have questions.
Idaho Potato Pest Management Association meeting.
Announcements All Locations
Posted on: February 13, 2006 by Nora Olsen
The annual Idaho Potato Pest Management Association (IPPMA) meeting is scheduled for February 16, 2006 at the Odd Fellow’s Hall, Wendell, Idaho. All are welcome- you don't have to be a member to attend. The meeting will start at 9:00 am. and end at 1 pm. The agenda will include “Potato tuber moth concerns and control”, “Chemical control of early blight: How to get the most bang for your buck”,“Potato viruses: yield effects and other concerns”, “How to grow and store potatoes for processing quality”, “Manure Management in Potato Cropping Systems”, “Gowan products for potato and corn cropping systems”. Lunch will be provided (sponsored by Gowan Company). Two Idaho Ag Pesticide License Recertification credits will be available. Please contact Nora Olsen at 736-3621 with questions. Hope to see you there.
Potato Education Meeting (Idaho Potato Pest Management Assoc
All Crops All Locations
Posted on: February 10, 2006 by Nora Olsen
The annual Idaho Potato Pest Management Association (IPPMA) meeting is scheduled for February 16, 2006 at the Odd Fellow’s Hall, Wendell, Idaho. All are welcome- you don't have to be a member to attend. The meeting will start at 9:00 am. and end at 1 pm. The agenda will include “Potato tuber moth concerns and control”, “Chemical control of early blight: How to get the most bang for your buck”,“Potato viruses: yield effects and other concerns”, “How to grow and store potatoes for processing quality”, “Manure Management in Potato Cropping Systems”, “Gowan products for potato and corn cropping systems”. Lunch will be provided (sponsored by Gowan Company). Two Idaho Ag Pesticide License Recertification credits will be available. Please contact Nora Olsen at 736-3621 with questions. Hope to see you there.
Potato Education Meeting (Idaho Potato Pest Management Assoc
All Crops All Locations
Posted on: February 10, 2006 by Nora Olsen
The annual Idaho Potato Pest Management Association (IPPMA) meeting is scheduled for February 16, 2006 at the Odd Fellow’s Hall, Wendell, Idaho. All are welcome- you don't have to be a member to attend. The meeting will start at 9:00 am. and end at 1 pm. The agenda will include “Potato tuber moth concerns and control”, “Chemical control of early blight: How to get the most bang for your buck”,“Potato viruses: yield effects and other concerns”, “How to grow and store potatoes for processing quality”, “Manure Management in Potato Cropping Systems”, “Gowan products for potato and corn cropping systems”. Lunch will be provided (sponsored by Gowan Company). Two Idaho Ag Pesticide License Recertification credits will be available. Please contact Nora Olsen at 736-3621 with questions. Hope to see you there.
Potato Education Meeting (Idaho Potato Pest Management Assoc
All Crops All Locations
Posted on: February 10, 2006 by Nora Olsen
The annual Idaho Potato Pest Management Association (IPPMA) meeting is scheduled for February 16, 2006 at the Odd Fellow’s Hall, Wendell, Idaho. All are welcome- you don't have to be a member to attend. The meeting will start at 9:00 am. and end at 1 pm. The agenda will include “Potato tuber moth concerns and control”, “Chemical control of early blight: How to get the most bang for your buck”,“Potato viruses: yield effects and other concerns”, “How to grow and store potatoes for processing quality”, “Manure Management in Potato Cropping Systems”, “Gowan products for potato and corn cropping systems”. Lunch will be provided (sponsored by Gowan Company). Two Idaho Ag Pesticide License Recretification credits will be available. Please contact Nora Olsen at 736-3621 with questions. Hope to see you there.
Crop Protection Meeting credit update
Announcements All Locations
Posted on: February 6, 2006 by Jeff Miller
For the upcoming University of Idaho Crop Protection meeting being held in Idaho Falls on Feb. 7 (Shilo Inn from 8:30-4:00) and Pocatello on Feb. 8 (Ramada Inn from 8:30-4:00), 6 ISDA and 6.5 CCA (Pest Management) will be available at each meeting. More details on the meeting can be found at:
http://www.ag.uidaho.edu/potatopath/meetings/meetings.html
Attendees can receive 3 ISDA credits for just attending either the morning (small grains and alfalfa) or afternoon (potatoes/sugarbeets) sessions. 3.5 CCA credits are available in the morning and 3 in the afternoon.
The meetings are free.
Please contact Jeff Miller at 208-397-4181 if you have any more questions.
U of I Crop Protection Meeting
All Crops All Locations
Posted on: January 20, 2006 by Jeff Miller
The third annual University of Idaho Crop Protection Seminar will be held February 7 in Idaho Falls at the Shilo Inn and February 8 in Pocatello at the Ramada Inn. Meetings will begin at 8:30 and end at 4:00. Lunch will be provided. Please RSVP to Jeff Miller at jsmiller@uidaho.edu or 397-4181 so we can get an accurate head count for lunch. On both days the morning session will focus on wheat, barley, corn, and alfalfa. The afternoon session in Idaho Falls will focus on potatoes and the afternoon session in Pocatello will focus on sugarbeets and potatoes. A copy of the agenda can be found at:
http://www.ag.uidaho.edu/potatopath/meetings/2006_crop_protection_meeting.pdf
Evaluation Survey
Announcements All Locations
Posted on: December 9, 2005 by Jerry Neufeld
Thanks to everyone that recently completed an evaluation for the Pest Alert Network.
The winners of the $75 gift certificates to the Outback Steakhouse are Doug Gross (potato grower) and Mike Larsen. The winners of the polo shirts and hats are Scott Rinehart and David Shaw.
I will get the prizes in the mail ASAP.
Crop consultant potato disease meeting update
Potato All Locations
Posted on: December 5, 2005 by Jeff Miller
The potato disease workshop to be held in Burley on December 14 has received 3.5 Pest Management CCA credits and 3 ISDA credits for pesticide license recertification. More information on the meeting can be found at:
http://www.ag.uidaho.edu/potatopath/
Look under the "Meetings" section.
Please contact Jeff Miller at 208-397-4181 if you have any further questions.
Potato Disease Management Meeting
Potato All Locations
Posted on: November 22, 2005 by Jeff Miller
University of Idaho Crop Consultant Training Workshop
December 14, 2005
Best Western Conference Center
800 N. Overland Ave.; Burley, ID
For all potato growers and consultants:
Come to learn the latest information on managing diseases of potato. Presentations will be given on managing soilborne, foliar, and storage diseases of potatoes.
Agenda:
8:30-9:30: Managing Rhizoctonia canker in potato
9:30-10:30: Managing foliar diseases (white mold, early blight, and late blight with some information on black dot)
10:30-12:00: Managing storage diseases of potato (pink rot, leak, silver scurf, and dry rot)
Presentations will be given by Dr. Jeff Miller (University of Idaho) and Dr. Terry Miller (Miller Research, Inc.) and will focus on new results from fungicide trials relating to product rates, fungicide application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations.
Please contact Jeff Miller at 208-397-4181 for further information.
Potato Disease Management Meeting
Sugarbeets All Locations
Posted on: November 22, 2005 by Jeff Miller
University of Idaho Crop Consultant Training Workshop
December 14, 2005
Best Western Conference Center
800 N. Overland Ave.; Burley, ID
For all potato growers and consultants:
Come to learn the latest information on managing diseases of potato. Presentations will be given on managing soilborne, foliar, and storage diseases of potatoes.
Agenda:
8:30-9:30: Managing Rhizoctonia canker in potato
9:30-10:30: Managing foliar diseases (white mold, early blight, and late blight with some information on black dot)
10:30-12:00: Managing storage diseases of potato (pink rot, leak, silver scurf, and dry rot)
Presentations will be given by Dr. Jeff Miller (University of Idaho) and Dr. Terry Miller (Miller Research, Inc.) and will focus on new results from fungicide trials relating to product rates, fungicide application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations.
Please contact Jeff Miller at 208-397-4181 for further information.
NRCS Cost sharing for biofumigation and field scouting
Announcements All Locations
Posted on: November 8, 2005 by Jerry Neufeld
The Natural Resources Conservation Service has approved two pest management practices for EQIP cost sharing. Producers must sign up by NOVEMBER 22, at their local NRCS Field Office.
The two Pest Management practices are:
1. Biofumigation. This is the planting of either radish or mustard as a green manure crop preceding potatoes or sugarbeets. The crop is planted following an early harvest crop such as wheat. Trials conducted in 2003 and 2004 show biofumigation costs the farmer about $120 to $140 per acre. Farmers using biofumigation have seen significant decreases in nematode populations and increases in potato yields, without using chemical fumigants. The practice will pay a flat rate of $50/Ac and is limited to a maximum of 160 acres.
2. Field Scouting. It was agreed that NRCS needs to promote the use of field scouting for insects to determine if threshold numbers are exceeded prior to making the decision to apply pesticides. This practice is limited only to insect pests -- not weeds. The scouting must be done by a qualified (certified) individual (likely a crop consultant or CCA). Submission of scouting and insecticide records will be required. This practice will pay $10/Ac and is limited to 160 acres.
Producers should contact their County NRCS Field Office by NOVEMBER 22 and sign up to participate in an EQIP contract. After the signup, NRCS will contact interested producers and work with them to develop an EQIP contract. These two pest management practices will be part of their contract along with other conservation practices they may be interested in.
Potato Tuberworm
Potato All Locations
Posted on: October 14, 2005 by Jerry Neufeld
Potato tuberworm, also commonly called the tuber moth, is a relatively new pest of concern in the Pacific Northwest. Several tuber moths were recently collected near Parma in a trapping system established by the University of Idaho with funding from the Idaho Potato Commission. The Idaho State Department of Agriculture has responded by developing a more extensive set of traps throughout southern Idaho. While we don’t yet know what these isolated findings of tuberworm adults in Idaho mean, we do know that tuberworm damage if left unchecked can reduce the value of a potato crop more drastically than just about any other pest. Therefore, it is important that growers and fieldrepresentatives stay informed about this pest and focus on the best management practices that have been established for the control of potato tuberworm. Background information on the pest and results of the University of Idaho trapping program are available at http://www.uidaho.edu/so-id/entomology/. Best management practices and general information on potato tuberworm can be found at www.agri.state.id.us/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php#Potato. Results of the Idaho trapping network are scheduled to be posted at that website in the near future. Information on tuber moth trap counts for the Columbia Basin of Washington and Oregon can be found at www.potatoes.com/mapthing/plotmap1.cfm. This information was provided by Dr. Mike Thornton from the University of Idaho.
Pesticide disposal for eastern and south central Idaho
All Crops All Locations
Posted on: September 7, 2005 by Jeff Miller
The ISDA has announced a free pickup for unusable pesticides in eastern and south-central Idaho. More information can be found at the following link:
http://www.agri.state.id.us/Categories/Pesticides/pdp/indexdisposalmain.php
Dates and places for pickup are:
Sept. 12 in Rexburg (Madison County Solid Waste Transfer Site)
Sept. 13 in Preston (Franklin County Weed Control)
Sept. 14 in American Falls (Power County Landfill)
Sept. 15 in Burley (BLM Yard)
Sept. 16 in Twin Falls (Twin Falls Canal Company)
Sept. 17 in Jerome (Jerome County Fair Grounds)
Each location will be receiving pesticides from 9:00 a.m. to 1:00 p.m.
Late blight in western Bingham County
Potato All Locations
Posted on: September 3, 2005 by Jeff Miller
Late blight has been confirmed in western Bingham County (north of Aberdeen). The field had received four applications of fungicides on 14-day intervals. Similar to the late blight north of American Falls, the outbreak in this field is small.
Late blight in Power County
Potato All Locations
Posted on: September 2, 2005 by Jeff Miller
Late blight has been confirmed in Power County north of American Falls. The potato field is still green. Two fungicide applications had been made to the field prior to finding the late blight. The blight was only found on stems and petioles and appeared to have come in from outside the field. The blight was very limited in the field. The lesions at first appeared to be wind and/or frost damage.
For the Pleasant Valley area, growers with healthy, actively growing vines are advised to apply a protectant fungicide. Spread of the pathogen is unlikely in the absence of thundershowers. However, dew formation will favor spread within a field.
If you have any further questions, please contact Jeff Miller at the University of Idaho at 681-1379.
Late blight in the Magic Valley
Potato All Locations
Posted on: August 26, 2005 by Jeff Miller
Late blight has been confirmed in Minidoka County. Protectant fungicide applications in this area are advised to protect against the threat of tuber blight for fields that still have healthy canopies. Ranger Russet is particularly susceptible to tuber blight.
Continued scouting of potato fields is still critical. Any suspicious lesions can be submitted to the University of Idaho for confirmation. Please contact any of the people listed below:
Mike Thornton (Treasure Valley): 722-6701
Nora Olsen (Magic Valley): 736-3600
Jeff Miller (Aberdeen): 397-4181
Bill Bohl (Blackfoot): 785-8060
Phil Nolte (Idaho Falls): 529-8376
All field specific information will be held strictly confidential and reported only on a county basis.
Organic Potato Field Day August 8
Announcements All Locations
Posted on: July 25, 2005 by Nora Olsen
******* FIELD DAY ANNOUNCEMENT ********
Organic Potato Field Day
Monday, August 8, 2005
Sunset Butte Organics near Buhl, Idaho
10 am - 3 pm
******** FIELD DAY ANNOUNCEMENT ********
Potato Growers of Idaho, the Northwest Coalition for Alternatives to Pesticides and Rural Roots invite you to attend a tour of Sunset Butte Organics' potato farm on August 8 near Buhl, Idaho. Mike Heath of Sunset
Butte Organics, along with other organic potato growers, will discuss rotation crops, fertility and pest management and marketing. John O'Connor, an organic grower and former organic inspector, will speak about the organic certification process and on-farm inspection. Mir Seyedbagheri, Juan Alvarez and Nora Olsen from the University of Idaho will share their work on organic potato fertility, beneficial insects and organic sprout inhibitors. Enjoy a delicious meal of organic beef and freshly picked fruits and vegetables.
Please RSVP by August 3, 2005 with Keith Esplin at 785-1110 or pgike@cableone.net or Jen Miller at 850-6504 or millerjen12@aol.com. Support for this field day also comes from the following businesses: Frontier Natural Products Co-op, Magic Valley Compost, Mountain States Oilseeds and Pillar Butte Seed.
DIRECTIONS TO THE FIELD DAY: From Boise - Exit I-84 at Bliss. Travel south on Hwy 30 through Hagerman. After leaving the canyon, head south to the first 90°
curve and go straight (leave Hwy 30) onto 1000 E Rd. The road will wind around. At first T intersection, turn left onto 4200 North Rd. After 200 yards, take a right onto 1000 East Rd and travel 1 mile. At next T
intersection, turn left onto 4100 North Rd. After 200 yards, take a right onto 1000 East Rd and travel 3 miles. Turn right onto 3800 North Rd and travel 1 mile. Meet at house with shady front yard and Sunset Butte Organics sign (3800 N 912 E). From Twin Falls - Take Hwy 30 (truck route) towards Buhl. Travel west through Buhl on Burley Ave, which becomes Deep Creek Rd and then 4100 North Rd) for 4 miles. Turn left onto 1000 East Rd and travel 3 miles. Turn right onto 3800 North Rd and travel 1 mile. Meet at house with shady front yard and Sunset Butte Organics sign (3800 N 912 E).
Late blight found in southern Idaho
Potato All Locations
Posted on: July 19, 2005 by Jeff Miller
Late blight was confirmed in Canyon County this morning (July 19, 2005). The blight appeared to have started in a spot that looked like a drowned-out spot. Further investigation showed that lesions were scattered throughout the field. A second field nearby was found to have a very light infestation.
The typical light-green halo that usually surrounds late blight lesions was not present on the infected leaves early in the morning when the leaves were wet. As the leaves dried out, the characteristic halo did appear. However, white sporulation was visible on leaves in the early morning dew.
Growers in the Treasure Valley who do not have late blight should spray immediately if no applications have been made and continue on a weekly basis with a protectant fungicide. As long as the weather remains hot and dry, spread of the pathogen will be slow. If late blight has been confirmed in a field, stronger products such as Curzate®, Acrobat®, and Previcur® can be mixed with the protectants (TanosTM is a combination of the active ingredient in Curzate® and famoxate, which is similar in activity to strobilurins). Stand alone products like Omega® and Gavel® have also shown good protection against tuber blight. If you have any question about fungicide usage please contact the University of Idaho personnel listed at the end of this email.
As long as the weather remains hot and dry, growers in other regions of the state can stay on a 10-14 day program. However, fields need to be scouted intensively. The weather in Canyon County has been hot and dry. The late blight has most likely been present for a while, but was limited in expression due to the hot dry weather. Spring conditions were extremely favorable for the late blight pathogen to get established. The threat of late blight is high for all areas of the state and most likely will appear in other areas soon. Scout wet areas in fields 2-3 times each week.
If you find any suspicious symptoms, please contact University of Idaho personnel:
Mike Thornton (Treasure Valley): 722-6701
Nora Olsen (Magic Valley): 736-3600
Phil Nolte (Idaho Falls): 529-8376
Bill Bohl (Blackfoot): 785-8060
Jeff Miller (Aberdeen): 397-4181
All field specific information will be held strictly confidential.
Malheur Experiment Station Field Day Wednesday, July 13th
Announcements All Locations
Posted on: July 12, 2005 by Clint Shock
The Malheur Experiment Station Field Day will be held this Wednesday, July 13th.
The schedule for this year is as follows:
8:30 (am) - 9:00
9:00 - 10:30
10:30 - 12:00
12:00 - 1:00
1:30 - 4:00
We'll also be showing off the new Mid-Snake River Watershed Vegetation Database after lunch.
Late blight
Potato All Locations
Posted on: July 12, 2005 by Jeff Miller
Late blight has been found in northern Idaho. Based on the pattern of disease in the field, it originated from seed.
This outbreak does not pose a threat to potato producers in southern Idaho. However, it does underscore the potential for blight development given the weather we have experienced this year. Conditions prior to the last few weeks were ideal for the establishment of an epidemic.
Scout wet areas twice weekly. An initial fungicide application be made just prior to row closure. An interval of 14 days is justified under our current hot, weather. If thundershowers develop, however, intervals will need to be shortened.
Crop Production Challenge
Announcements All Locations
Posted on: June 30, 2005 by Nora Olsen
The University of Idaho and USDA/ARS invite you to join us for the First Annual Crop Production Challenge on July 7, 2005 at the University of Idaho Kimberly R & E Center (3806 N. 3600 E.).
Registration from 8 to 8:30 am. The challenge will run from 8:30 to 3 pm with lunch provided for those who RSVP by July 5.
This is an educational event to test and increase the knowledge of crop advisors, consultants, extension educators, and other agricultural professionals; and have fun at the same time.
Pesticide applicator recertification credits and Certified Crop Advisor credits available.
Topics to include: Entomology, Plant Pathology, Weed Science, Potato Physiology, Soil Fertility, Irrigation Management, and Water Quality.
Call 736-3600 (Mary) to register or if you have any questions.
Powdery Mildew in Sugarbeets
All Crops All Locations
Posted on: June 21, 2005 by Jerry Neufeld
Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatment for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, AMSCO Field Representatives say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. AMSCO is recommending mildew applications in the west end of the Treasure Valley by July 5 and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN AN UPDATED REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. YOU SHOULD CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO FOR THEIR TREATMENT RECOMMENDATIONS.
Snake River Weed Control Tour
Announcements All Locations
Posted on: June 16, 2005 by Nora Olsen
You Are Invited to Attend
THE SNAKE RIVER WEED CONTROL TOUR
June 21 and 22, 2005
University of Idaho Locations: Aberdeen R&E Center (June 21st)and Kimberly R&E Center (June 22nd).
Registration begins at 8:00 A.M. with the tours starting at 8:30 A.M. Tours will conclude at noon with a sponsored lunch each day. Bring friends and associates. Idaho pesticide re-certification credits (3) will be offered.
Call Aberdeen at 208-397-4181 or Kimberly at 423-4691
for more information.
WE HOPE TO SEE YOU AT THE TOURS!!!
Stripe Rust
All Crops All Locations
Posted on: June 14, 2005 by Jerry Neufeld
Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is reporting that stripe rust in spring grains is developing quite rapidly and we are approaching the growth stages that limit spray options. According the to “2005 PNW Plant Disease Handbook,” Headline and Quadris are the only products that can be used to the ”end of flowering” growth stage. In order to maximize yields in cereals it is important to protect the flag leaf from infection.
According to Dr. Brown, the most susceptible soft white spring cereals in the variety trial at the Parma R and E Center are Penewawa, Treasure, White Bird and Jubilee. If you are growing these varieties and haven’t yet scouted your fields, you should do so as soon as possible.
Eminent Registration in Sugarbeets
Sugarbeets All Locations
Posted on: June 14, 2005 by Jerry Neufeld
Dr. John Gallian, Sugarbeet Specialist and Plant Pathologist at the University of Idaho Twin Falls R&E Center posted this message to the UIsugarbeet-INFO digest regarding registration for Eminent Fungicide.
Eminent 125SL (tetraconazole) has been given a 24(c) Special Local Need (SLN) registration for use in Idaho for powdery mildew and Cercospora leafspot control on sugarbeets. This registration will be valid beginning with the 2005 growing season through November 30, 2012.
This registration provides sugarbeet growers with a fungicide for resistance management that has a different mode of action than the strobilurins (Gem and Headline) and the benzimidizoles (Topsin M). Eminent is a sterol demethylation inhibitor (DMI) fungicide and should be applied in tank mix or in alternate applications with non- DMI fungicides. It belongs to the triazole group of fungicides.
Check our website at www.uidaho.edu/sugarbeet under "Pesticides" for more information on resistance management and under "Diseases" for Eminent powdery mildew efficacy data for each year since 2001.
Eminent 125SL is to be applied at 13 fl oz/acre and must be alternated with a non-triazole fungicide which is registered for sugarbeets. For the complete label, you can check the Idaho State Department of Agriculture website www.agri.state.id.us. Follow these links, "Programs & Services" "Pesticides" "Product Registrations" "Section 24c Labels."
Potato late blight forecast
Potato All Locations
Posted on: June 14, 2005 by Jeff Miller
The probability for late blight in southern Idaho is extremely high in 2005. The amount of precipitation and the number of hours favorable for late blight pathogen establishment have been very high all across southern Idaho. The probability of seeing disease ranges from 95-99%. These values are higher than what was observed in the bad late blight years of 1997 and 1998.
Protectant fungicides are very similar to sunscreen in that they wear off over time and only protect where they are applied. If thundershowers persist through the coming weeks, growers are advised to begin spraying at row closure and continue on a weekly schedule for 4 weeks. This can be done using standard protectant fungicides such as EBDC based products or chlorothalonil (See www.ag.uidaho.edu/potatopath/diseases_lateblight_fungicides.htm) While this is an expense most growers have not had in the past, the late blight pathogen does not care, and cool, wet weather can fuel an epidemic similar to what was seen in 1997.
Fungicide stocks will also be low this year due to soybean rust in the Midwestern U.S. Now is the time to line up the fungicides you plan to use this coming year. It is likely that some products may not be available later in the season.
Volunteers and infected tubers from storage pose a threat for establishing an epidemic in 2005. Many commercial storages in southern Idaho have sprouting cull piles even at this late date. Manage cull piles and volunteers in order to minimize the threat of late blight this coming season.
For more information, call University of Idaho Extension personnel at the following numbers:
Treasure Valley: 722-6701 (Mike Thornton)
Magic Valley: 736-3600 or 423-6621 (Nora Olsen)
Eastern Idaho: 529-8376 (Phil Nolte), 785-8060 (Bill Bohl), or 397-4181 (Jeff Miller)
Season start up message
Announcements All Locations
Posted on: April 12, 2005 by Jerry Neufeld
Dear Pest Alert Subscriber;
The growing season in the Treasure Valley began in early March this year. By now a lot of crops have been planted and are emerging. It won’t be long before planting is in full swing across all of Idaho and pests start showing up.
At the present time there is quite a bit of uncertainty in production agriculture related to markets and water supplies. Because of these challenges, Sugar Magazine Editor Gary Rawlings wrote an article entitled “Whatever You Do, Don’t Cut Inputs” The article appeared in the February 2005 issue. In his article about sugarbeets, Rawlings says “weed, disease, and insect control products must be used. Shortcuts cannot be taken. It’s only the tonnage that will matter next fall with acres being eliminated.” Our goal with TV/PNWPestAlert.net is to inform you about pest problems in a timely manner. With earlier warning of pest problems, you can make more informed decisions that will help maximize use of your inputs.
The 2004 evaluation of TV/PNWPestAlert.net was favorable. Below are some of the comments subscribers submitted with the evaluation.
“I improved the timeliness of my chemical applications and improved my scouting methods because of the pest alert network.”
“Helped me to watch for mildew in beets for better timing. Helped in timing of field scouting for peach aphid in potatoes.”
“I improved the timeliness and reduced the number of my applications, the program felt like another set of eyes watching out for my crops.”
“I had more timely scouting activities as a result of knowing the status of lygus and powdery mildew.”
As you can see from the comments above, TV/PNWPestAlert.net is a valuable resource for the agriculture industry in Idaho and Oregon. As website administrators, we value and need your continued assistance. When pest outbreaks occur in 2005, please provide this information to one of us as quickly as possible so the information can be quickly posted to the website. In addition, please tell your neighbors or clients about the website. The more participation we have the better.
TV/PNWPestAlert.net would not be possible without our sponsors. Last year’s sponsors were the Idaho Alfalfa and Clover Seed Commission, the Idaho Sugarbeet Industry and the Idaho Potato Commission. We would like to extend a sincere thank you to them for their generous support. We are currently in the process of lining up sponsors for 2005.
Once again, thanks to everyone who has helped to make TV/PNWPestAlert.net a success. We wish each of you a safe and prosperous production season.
Sincerely,
Jerry Neufeld
Steve Reddy
Jeff Miller
Nora Olsen
William Bohl
Bryan Hopkins
Juliet Windes
Clint Shock
Lynn Jensen
Outback Steakhouse Gift Certificate Winners
All Crops All Locations
Posted on: December 15, 2004 by Jerry Neufeld
Thanks to everyone that recently completed an evaluation for the Pest Alert Network.
The winners of the $75 gift certificates to the Outback Steakhouse are: Ralph Graham, Darren Bradley and Rod Steele. The winners of the polo shirts and hats are Allan Landon, Jeffery Christianson and Gene Schmitt.
I will get the prizes in the mail ASAP.
Late Blight
Potato All Locations
Posted on: July 30, 2004 by Nora Olsen/Terry Miller
Late blight has been confirmed in Minidoka County.
prize winners
Announcements All Locations
Posted on: December 5, 2003 by Jerry Neufeld
Thank you to everyone that completed an evaluation survey for TVPestAlert.net. Your input is very important to us and will be used help us to make the website better for you.
Winners of the $75 gift certificates to Outback Steakhouse are Gordon Obermeyer in Idaho and Martin Fujishin in Oregon. Winners of the polo shirts and hats are Doug Plaisted in Idaho and Carl Hill in Oregon. Prizes will be in the mail ASAP. Once again, thanks for your help.
Weed Control Seminar
Announcements All Locations
Posted on: November 4, 2003 by Jerry Neufeld
The southwest Idaho Weed Control Association is sponsoring a “Weed Control Seminar” on November 18, 2003 at the Elks Building in Caldwell (1015 N Kimball). Registration begins at 8:00 a.m. Cost is $20.00 if you pre-register or $25.00 if you pay at the door. Space is limited; therefore you must pre-resister by November 12 regardless of when you pay. At the conclusion of the program you will receive five Idaho pesticide license credits. Oregon credits are pending. Call Ada County Weed Control at 888-2316 to RSVP or to get more information.
Reminder about Pesticide Disposal Program
Announcements All Locations
Posted on: October 15, 2003 by Jerry Neufeld
The Idaho State Department of Agriculture’s Pesticide Disposal Program is holding a waste pesticide collection in Canyon County in conjunction with Canyon County’s first ever Household Hazardous Waste collection. Bring your unusable pesticides to the Canyon County landfill on Friday, October 17, 2003 between 9:00 a.m. and 2:00 p.m.
Only pesticides such as herbicides, insecticides and fungicides will be accepted. Do not bring household paint, motor oil, anti-freeze or similar products. These products will be collected on Saturday, October 18, 2003.
Bring materials to the Canyon County Landfill; Pickles Butte; 15500 Missouri Ave.; Nampa, Idaho; (208) 466-7288
For more information contact Victor Mason II at (208) 465-8442.
Visit the ISDA website at http://www.agri.state.id.us/agresource/pdschedule.htm for more information.
Minimizing Root-Knot Nematode Problem On Potato In This Seas
Potato All Locations
Posted on: August 27, 2003 by Dr. Saad Hafez
A severe winter is one of the characteristics for Idaho's weather. But, mild winter conditions during the current year followed by an early warm spring and a hot summer produced a perfect condition not only for the growth of potato but also for the 'unseen enemy' nematode. It has been a perfect condition for the nematode multiplication, resulting in severe damage on the 2003 potato crop.
Among all abiotic factors, temperature plays an important role on the nematode life cycle, feeding and multiplication rate. Deep frost and lower temperatures during the winter season reduce the nematode population and there by minimize the nematode damage on the succeeding potato crop. This year crop season is characterized by unusual mild winter with very early warm spring, which leads to the more nematode generations within a short period. This environment is highly congenial for the development of all nematodes. Although the nematode diagnostic lab can determine the initial nematode population before planting of potato, no method is available to determine the accurate population during the crop growth period. But, when there is a will there is a way. Yes, one of the ways by which growers can minimize the root-knot damage on potato is to harvest the crop early and not to keep the crop in storage. Adoption of such a practice will be highly useful to the growers whose field has a previous history of root-knot nematodes.
Malheur Experiment Station Field Day
Announcements All Locations
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Pea Leaf Weevil
Alfalfa Seed All Locations
Posted on: April 22, 2003 by Jerry Neufeld
Brad Chambers from Pioneer is reporting Pea Leaf Weevils are being found in spring seeded alfalfa seed fields. Insects have been found around Caldwell, Nampa, and Melba. Brad is reporting these insects have been around for a few weeks and he has seen stand reductions in fields with high populations. Pea Leaf Weevils feed on the cotyledons of the seedling after it emerges and then on older growth. Leaves with half circle notches in them should alert the grower that they are present (they can be confused with cut worm damage). 2003 Insect PNW is reporting there are no products registered for this pest.
ISDA pesticide disposal program
Announcements All Locations
Posted on: April 21, 2003 by Jerry Neufeld
Here is information from Victor Mason at ISDA regarding pesticide disposal in the Treasure Valley.
April 21, 2003
To: PESTICIDE USERS IN IDAHO
RE: PESTICIDE DISPOSAL PROGRAM (PDP)
The Idaho State Department of Agriculture (ISDA) is preparing for the annual unusable pesticide collection programs in your area this spring. Since 1993, when the pesticide disposal program (PDP) began, it has safely disposed of over a half a million pounds of unusable pesticides.
Collections are going to be held in: Caldwell - May 19,2003; Weiser- May 20, 2003; Lewiston ? May 21, 2003, and Coeur d' Alene ? May 22, 2003. All collection times are from 9:00 AM- 2 PM.
This program is specifically designed with the agricultural pesticide user in mind; however, we accept pesticides from virtually all sources including farmers, homeowners, pesticide applicators, researchers, or pesticide dealers, etc. We include herbicides, rodenticides, fungicides, insecticides and all other "icides" in our definition of pesticides, however, we are unable to accept fertilizers, spent motor oil, antifreeze, paint or similar waste in these pesticide collections. There is no cost to the participant for the first 1,000 pounds of pesticide. We would appreciate your promoting the program to other pesticide users in your area.
The department is not concerned with who has what pesticide, since the program is simply a service provided by the department to prevent possible contamination of the environment or avoid potential human and animal health exposure. Although pre-registration prior to collection will not be required it will be necessary for the participants to sign a release, transferring the ownership of the products to the ISDA at the collection site in accordance with the PDP rules.
It is the responsibility of the participant to follow all Federal and state laws and rules pertaining to the transportation of these materials and to over-pack all torn or leaky containers to prevent a release of product into the environment during transportation. ISDA staff is available to provide assistance in over-packing torn or leaking containers provided that sufficient time is available for arrangements to be made prior to the collections (the sooner the better).
The WEB Page address for the program is http://www.agri.state.id.us/agresource/pdptoc.htm
Local ISDA staff is also available to answer any questions you may have about these collections. The phone numbers and office addresses can be obtained by calling the Boise office at (208) 332-8610, or if you or anyone has questions, I can be reached by phone at (208) 465-8442 or E-mail at vmason@agri.state.id.us
Sincerely,
Victor Mason II, Agricultural Program Manager
Cereal Leaf Beetle
Small Grains All Locations
Posted on: April 15, 2003 by Jerry Neufeld
Brad Brown, UI Extension Crop Management Specialist, and Bob Trudel from Producers Supply Coop are both reporting they have seen cereal leaf beetle adults and adult feeding damage in small grains. Brad saw the adults and feeding damage approximately two miles east of Wilder.
Overwintering adults become fully active (mating and flight) when daytime temperatures reach 66 degrees F. Adults mate and begin to lay eggs on host plant leaves within 10 days of breaking diapause (spring emergence). Preferred hosts are spring seeded small grains, especially oats and barley. Eggs take from 4 to 23 days to hatch depending on temperature. Upon emergence, CLB larvae will begin feeding on host leaves.
Welcome and Thanks
Announcements All Locations
Posted on: April 8, 2003 by Jerry Neufeld
Dear Pest Alert Subscriber;
As you already know, crop pests are appearing in the Treasure Valley. We have already posted a couple of alerts. Seems like the pests show up earlier each year.
Based upon the comments received in last year?s evaluation, the 2002 TVPestAlert.net operations were a success. With your help, we posted 51 alerts to approximately 195 subscribers in the Treasure Valley. Below are several comments received from subscribers on last fall?s evaluation:
Ø The alfalfa seed, corn, onion, and sugarbeet pest notifications helped me decide when to scout my fields and helped me to improve the accuracy and timing of my pesticide applications. (Grower).
Ø I used it to assist the crop advisors in watching what pests were coming into our area. I know the hatch information was of particular interest to the crop advisors and growers when they were trying to time spray applications. (Simplot Company Field Representative)
Ø Made me more alert to the possible danger of a certain pest or disease. I didn't have any major pest problems because through pest alert I caught them in time. (Grower)
The primary crops of Pest Alert subscribers are small grains, onions, corn, sugarbeets, forage, alfalfa seed, potatoes and mint. Presently, 38% of subscribers are growers, 35% are field representatives, 20% are government and 7% are other. There are currently 226 subscribers.
TVPestAlert.net wouldn?t be possible without our sponsors. Last year?s, and this year?s sponsors include the Idaho Alfalfa and Clover Seed Commission, the Sugarbeet Research Commission and the Idaho Potato Commission. We would like to extend a sincere thank you to them for their generous support.
As you can see from the comments above, TVPestAlert.net is a valuable service to the agriculture industry in the Treasure Valley. We would like to thank each of you who contributed to that success by submitting pest information last year. As we proceed through the 2003 growing season, please don?t forget to submit pest information to us. In addition, please tell your neighbors, or clients about the website.
Once again, thanks to everyone who helped to make TVPestAlert.net a success. We wish each of you a safe and prosperous production season.
Sincerely,
Jerry Neufeld, UI
Ben Simko, OSU
Steve Reddy, UI
Lynn Jensen,OSU
Clint Shock, OSU
Brad Geary, UI
Tim Davis, UI
cutworms in mint
Mint All Locations
Posted on: March 21, 2003 by Jerry Neufeld
Cutworms have been found to be damaging mint fields in the Idaho portion of the Treasure Valley. Populations in some areas are high enough to require treatment. Bob Trudel from Producers Supply Coop provided this information.
cutworms in alfalfa seed
Alfalfa Seed All Locations
Posted on: March 21, 2003 by Jerry Neufeld
Cutworms are increasing in numbers in alfalfa seed fields throughout the Idaho portion of the Treasure Valley and also in the Nyssa/Adrian area of Malheur county. Populations in the Parma, Wilder, Homedale, Nampa and Melba areas have been on the increase over the last week. New alfalfa seedings small enough to be affected by this pest should be inspected and if necessary proper treatment should be applied to avoid serious stand reduction. Brad Chambers from Pioneer provided this information.
potato grower contracts
Announcements All Locations
Posted on: February 25, 2003 by Brad Geary
To all Potato Growers:
POTATO GROWERS MEET TO DISCUSS FRY CONTRACTS.
All contract potato growers for the Idaho fry processing companies are encouraged to attend one of two meetings this week to discuss the current state of contract negotiations for the 2003 crop year. Meetings have been scheduled for 1:30 p.m. at the Burley Inn on Thursday, February 27 and 1:30 p.m. at the Shilo Inn Suites in Nampa on Friday, February 28. The Southern Idaho Potato Cooperative reports that meetings held to date with Idaho fryers indicate soft french fry demand which means a decrease in the amount of Idaho potatoes required for frozen processing. With no fry contract settlements to date in the Pacific Northwest and planting time rapidly approaching, growers should take a hard look at their options for displaced contract potato acreage.
Treasure Valley Bean School
Announcements All Locations
Posted on: February 10, 2003 by Jerry Neufeld
The 2003 Treasure Valley Bean School will be held February 19, 2003 in the gymnasium of the Oregon Trail Church of God. The church is located approximately 3 miles west of Caldwell at exit 25 on I-84. Topics to be included are the state of the industry, white mold control options, changes in the seed indemnity fund, bean herbicide trial report, irrigation and the Treasure Valley Pest Alert Network. Lunch is sponsored by the Idaho Bean Commission and the Western Bean Dealers Association. Two pesticide license credits will be awarded at the end of the program. There is no cost to attend, but you must RSVP by February 17, to the Canyon County Extension office at 208.459.6003.
Survey Winners Announced
Announcements All Locations
Posted on: December 9, 2002 by Jerry Neufeld
Thanks to everyone that participated in the TVPestAlert.net 2002 program evaluation survey. We will use the information you submitted to make the website better suit your needs.
The winners of the $75.00 gift certificates to Outback Steakhouse are Mike Talkington and Ross Nishahara. The winners of the TVPestAlert.net polo shirts are Thad Schutt and Brad Roberts.
Thanks again for your participation.
TVPestAlert.Net Team
Jerry Neufeld
Ben Simko
Brad Geary
Lynn Jensen
Steven Reddy
Clint Shock
Tim Davis
Survey Winners Announced
All Crops All Locations
Posted on: December 9, 2002 by Jerry Neufeld
Thanks to everyone that participated in the TVPestAlert.net 2002 program evaluation survey. We will use the information you submitted to make the website better suit your needs.
The winners of the $75.00 gift certificates to Outback Steakhouse are Mike Talkington and Ross Nishahara. The winners of the TVPestAlert.net polo shirts are Thad Schutt and Brad Roberts.
Thanks again for your participation.
TVPestAlert.Net Team
Jerry Neufeld
Ben Simko
Brad Geary
Lynn Jensen
Steven Reddy
Clint Shock
Tim Davis
pesticide re-certification credits
Announcements All Locations
Posted on: November 21, 2002 by Jerry Neufeld
A pesticide re-certification training is being offered by Canyon County Cooperative Extension and the Idaho State Department of Agriculture on December 10, 2002. The training will be at the Canyon County Farm Bureau office at 4122 E. Cleveland Blvd. in Caldwell. Registration begins at 8:30 a.m. and is over at 3:00 p.m. Five pesticide licensing credits and four CCA credits will be given at the conclusion of the training (Oregon credits are pending). Cost is $25.00 at the door. Lunch and refreshments will be provided. Subjects to be covered are: Regulatory Updates, West Nile Virus, Bio Control of Purple Loosestrife and Cereal Leaf Beetle, Pesticides in Groundwater and Herbicide Decomposition, Spray Drift, Treasure Valley Pest Alert Network and Field Burning. Call Jerry Neufeld at 459-6003 if you have questions.
unsable pesticide collection
Announcements All Locations
Posted on: October 11, 2002 by Jerry Neufeld
ISDA conducts unusable pesticide disposal collection from agricultural producers, dealers, homeowners and applicators throughout the state. Although pre-registration was required in the past, it is not required this year. Prospective participants need only bring their unusable pesticides to the Canyon County landfill from 9:00 a.m. to 1:00 p.m. on Wednesday, October 23, 2002. ISDA is not concerned with who has what pesticide, since the program is simply a service provided by the Department to prevent possible contamination of the environment or avoid potential human or animal exposure. This program provides the agricultural producer and homeowner a safe, convenient, and environmentally friendly way to dispose of unusable pesticides. This program is free for the first 1,000 pounds of unusable pesticides per participant. Contact Victor Mason Agricultural Program Manager at ISDA if you have questions (465-8442).
Drip Irrigation Tour
Announcements All Locations
Posted on: August 28, 2002 by Jerry Neufeld
Oregon State University, Malheur County Extension Office and Clearwater Supply are sponsoring a one day tour to Othello, Washington to see Ranger and Umatilla potatoes grown with drip irrigation. The tour will depart from the Malheur County Extension Office on Wednesday, September 4 at 7:00 a.m. and will return by 9:00 p.m. the same day. If you are interested in attending, RSVP by 5:00 p.m. on September 3 by calling 541.881.1417. Transportation and lunch will be provided.
U of I Fruit Field Day
Announcements All Locations
Posted on: August 28, 2002 by Jerry Neufeld
Two pesticide certification credits from the Idaho Department of Agriculture are being offered for the University of Idaho Fruit Field Day on September 5, 2002 at the Parma Research and Extension Center.
U of I Fruit Field Day
Announcements All Locations
Posted on: August 26, 2002 by Jerry Neufeld
University of Idaho Pomology Program's Annual Fruit Field Day will be on September 5, 2002 at 9:00AM. The tour will start at the Parma Research and Extension Center where several unique varieties of table grapes, apples, peaches, nectarines and plums will be presented and tasted. Then participants will tour apple variety orchards, apples with particle films, table grape vineyards, peach and nectarine experiments and a modern high-density apple orchard with complete or partial root zone drying drip and sprinkler systems for "Fuji, 'Gala' and 'Corail' apples. During this tour, fruit cultural practices will be discussed and a new U of I orchard consisting of several new potential alternative fruit crops for Idaho and the PNW, including quince, pomegranate, persimmon, figs, mulberry, walnut and Asian pears will be visited. This tour is open to the public. Home gardeners, Master Gardeners, researchers and nursery representatives are welcome to join us. This tour is offered once a year and is a great opportunity for everyone interested in fruit to participate. If you have any questions, please call Dr. Essie Fallahi, Professor of Fruit Physiology at 208 722-6701 ext 225, Dr. Saad Hafez, Interim-Superintendent at 722-6701 Ext 237 or Maurine Baucom 622-6701 Ext 228. See you there!
Where: University of Idaho Parma Research & Extension Center; 29603 U of I Lane, Parma, Idaho
When: Thursday September 5, 2002 9:00 AM ? 12:30 PM
Powdery Mildew on potatoes (severe infection)
All Crops All Locations
Posted on: August 21, 2002 by Lynn Jensen
A severe infectation of powdery mildew has been observed on furrow irrigated potatoes.
corn earworm
Corn All Locations
Posted on: August 19, 2002 by Jerry Neufeld
Earworm in sweet corn seed has been a problem in the Treasure Valley this summer. The third generation was estimated to emerge at about 1450 to 1650 growing degree days (August 3 to August 15). Fourth generation emergence can?t be predicted with the current GDD model; however, it usually appears in late August to early September. Keep up your scouting program for this pest.
Corn Earworm
Corn All Locations
Posted on: July 29, 2002 by Jerry Neufeld
The next generation of corn earworm moths will begin laying eggs in the silk of corn between 1450 and 1650 growing degree days (gdd). In Nampa/Caldwell and Parma we are currently at 1389 and 1390 gdd respectively. The Oregon State University IPM model is predicting we will hit 1450 gdd in Nampa/Caldwell on August 2 and in Parma on August 1.
Corn Blotch Leafminer
Corn All Locations
Posted on: July 29, 2002 by Jerry Neufeld
A new corn pest, the corn blotch leafminer (Agromyza parvicornis), was discovered last week in a northeastern Idaho field near Rigby. To the best of our knowledge, this is the pest?s first occurrence in Idaho, although it has been reported previously in Southeastern and Midwestern states and, in 1995, in Nebraska. The current scientific literature indicates that corn is its only known host plant. Click on the "More Information" button for additional information and images.
Iris Yellow Spot Virus in Onions
Onion All Locations
Posted on: July 23, 2002 by Brad Geary
Iris Yellow Spot Virus symptoms are becoming very prevelant in onion fields where the symptoms were not obvious a couple of weeks ago. Once the virus is in the plant, minimize damage by reducing stress - particularly water stress. Fungicides will not control viral pathogens, so do not apply fungicides unless you are targeting a fungal pathogen.
cereal leaf beetle
Corn All Locations
Posted on: July 15, 2002 by Jerry Neufeld
Greg Willison, Chiquita Farms (New Plymouth) has been observing adult CLB infestations and feeding damage in field corn. Damage is most severe in corn fields adjacent to small grains, especially small grains that were not treated for CLB.
Adult CLB infestations of field corn are rarely of economic significance. However, growers may become alarmed at the amount of damage, especially near the field borders. The following web address links to a publication from Virginia Tech that has a section on CLB in field corn: http://ipm-www.ento.vt.edu/nipmn/VA-IPM/cereal_leaf_beetle/clb.html. In that publication it says:
"Adults emerge as the small grain crop is drying and migrate to other areas to find suitable food. Often, corn fields bordering small grain fields are attractive to the migrating beetles and these adults colonize the corn, especially along the edges nearest small grain. Cereal leaf beetles eat the leaf surface tissue on whorl stage corn plants. Narrow streaks are eaten between the leaf veins, usually on the surface but sometimes completely through the leaf. If beetle populations are very high, defoliation can reduce yield, but leaf feeding is usually cosmetic. Damage is often alarming to farmers even if it poses no economic threat. Beetles do not reproduce or remain for a very long time in corn fields and, therefore, damage is a single, short-term event that rapidly developing corn plants soon out-grow."
There has been rare case of economic damage of CLB in field corn in the eastern U.S.
corn earworm
Corn All Locations
Posted on: July 15, 2002 by Jerry Neufeld
Second generation corn earworm moths will begin laying eggs in the silk of corn that is silking at about 1300 growing degree days (gdd). According the Oregon State University gdd model, we are at 1032 gdd in Nampa/Caldwell and 1032 gdd in Parma. We are accumulating about 23 gdd per day. The model predicts we will be at 1300 gdd about July 25, 2002.
There is a possibility that a few overwintering or first generation moths may be laying eggs in the silk right now. However, the greatest threat will come from the second generation moths. You will want to scout your fields and take control measures as needed.
Wheat and Barley Field Tour
Announcements All Locations
Posted on: June 24, 2002 by Jerry Neufeld
Dr. Brad Brown is hosting a Wheat and Barley Variety Review and Field Tour at the Parma Research and Extension Center on June 26, 2002 starting at 9:30 a.m. Topics to be covered are Irrigated Cereal Variety performance and update on Cereal Leaf Beetle. Please RSVP by the end of Tuesday June 24 to reserve a hosted lunch with homemade ice cream. (208.722.6701 ext. 216)
Late Blight on Potato in Washington State
Potato All Locations
Posted on: June 20, 2002 by Brad Geary
Late blight was positively identified in Washington during the first week of June. Since that time more fields have been identified. Late blight has not been found in Idaho or Eastern Oregon. Protective spray programs should be initiated and maintained during the year. Scout fields twice and week and pay particular attention to areas of fields that have, or receive, extra water. If you would like current updates on late blight in Idaho, Washington and Oregon call:
Idaho - 1-800-791-7195
Washington - 1-800-984-7400
Oregon - 1-800-705-3377
Early blight has been found in several Treasure Valley potato fields, and can be monitored while scouting for late blight.
Adult Western Cherry Fruit Fly Found in traps
Tree Fruits All Locations
Posted on: June 10, 2002 by Tim Davis/Will Cook
An adult Western Cherry Fruit Fly was found in a trap in the Emmett area on June 7th. Cover sprays should be added if not already.
spotted alfalfa aphid
Alfalfa Seed All Locations
Posted on: June 7, 2002 by Jerry Neufeld
Mike Huff from Dairyland Seed is reporting spotted alfalfa aphids in alfalfa seed field across the Treasure Valley. He is finding both winged and wingless aphids. Mike advises to keep this in mind as you apply clean up sprays.
curlytop in sugarbeets
Sugarbeets All Locations
Posted on: June 6, 2002 by Jerry Neufeld
Curlytop virus has been found in sugarbeet fields in several locations around the Treasure Valley. Amalgamated Sugar Company is reporting that the virus is not widespread. Contact your field representative if you have suspect fields.
Cereal Leaf Beetles Infests Winter and Spring Wheat
Small Grains All Locations
Posted on: June 3, 2002 by Ben Simko
A fieldman with Simplot Soil Builders, Ontario has discovered hot spots of Cereal Leaf Beetle (CLB) infestations in spring and winter wheat near Fruitland, Idaho. In these fields egg hatch is complete with the CLB populations predominately in the medium to large size larval stages. An unusually heavy infestation of over 1 larva per flag leaf was observed in a winter wheat field just south of town. Other wheat fields had CLB injury levels ranging from 10 to 50% infested or damaged flag leaves. Fieldmen and growers are advised to monitor populations of CLB larvae to assess potential economic damage to small grains. At this time it is important to prevent damage to the flag leaf as the wheat plant moves from the boot to heading, anthesis, and kernel filling growth stages. See CLB Reference Page for more information on identification, action thresholds and crop protection chemicals.
Colorado Potato Beetle and Volunteer Potatoes
Potato All Locations
Posted on: May 24, 2002 by Brad Geary
Colorado potato beetles have been found on many volunteer plants and in a couple of commercial fields. Populations of beetles are far from economic threshold levels requiring control, however, be mindful of populations within fields so they can be managed properly. Also, it is important to control volunteer potato plants, if not these plants can serve as sources of inoculum for a number of diseases. This includes plants from cull piles. Volunteer potatoes are very competitive for light, water and nutrients, and will cause yield reductions in a crop unless they are controlled.
Sugarbeet Root Maggot
Sugarbeets All Locations
Posted on: May 23, 2002 by Jerry Neufeld
According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we accumulated 360 growing degree days as of May 13, 2002. For the past 7-10 days overwintering root maggot pupa have been emerging as adults and flying. Now is the time to be on the lookout for maggots feeding on sugarbeet roots, especially in replanted fields. Terry Cane from The Amalgamated Sugar Company has already confirmed the siting of adult root maggot flies.
Western Cherry Fruit Fly Activity
Tree Fruits All Locations
Posted on: May 21, 2002 by Tim Davis
Using temperature data from the Caldwell weather station the degree day model is predicting Adult Emergence on May 30, eggs laid on first fruit on June 5, and first egg hatch by June 9. The weather station in Parma is predicting the same dates. The weather station in Ontario predicts all activity four days earlier.
Coddling Moth Degree Days Near 250
Tree Fruits All Locations
Posted on: May 21, 2002 by Tim Davis
As of May 20th the Ontario weather station is reporting 189 degree days and forcasting accumulation of 250 dd's (3% hatch) on May 26. The Caldwell weather station reports 176 dd's and forcasts 250 dd's on May 28. The Parma weather station reports 178 dd's and also forcasts 250 dd's on May 28. Your first cover spray should be prior to these listed dates depending on your location.
Sugarbeet Leafhopper
Sugarbeets All Locations
Posted on: May 17, 2002 by Jerry Neufeld
Terry Cane from the Amalgamated Sugar Company is reporting that sugarbeet leafhoppers have been found in sugarbeet fields at several locations across the Treasure Valley in Idaho and Oregon. Leafhoppers are vectors of the curly top virus. Call your field representative from TASCO for more information.
Cereal Leaf Beetle
Small Grains All Locations
Posted on: May 17, 2002 by Jerry Neufeld
Cereal leaf beetle larvae are being reported south of Nampa, near Middleton, and west of Homedale to the Oregon border. Populations are heaviest in spring grains. U of I Extension Soil and Crop Management Specialist Brad Brown has included a "Cereal Leaf Beetle" update in the latest edition of the Cereal Sentinel (http://agweb.ag.uidaho.edu/swidaho.). Information provided by Land View Fertilizer Inc.
Mormon Crickets
Rangeland All Locations
Posted on: May 16, 2002 by Jerry Neufeld
Michael E. Cooper from the Idaho Department of Agriculture reports Mormon Crickets Emerging En masse' Across the Boise Front.
Mormon Crickets are being reported from the Danskin Mountain/Blacks Creek road area east of Mountain Home to Rocky Canyon outside of Boise and the Summit of Horseshoe Bend Hill on Highway 55. In excess of 24 bands of migrating crickets have been observed between Mayfield and the road to the Danskin Mountains in Elmore County. One of the biggest Bands of migrating crickets is on Horseshoe Bend Hill East of Hwy 55 extending a mile or two up the ridge.
Control measures have been undertaken in Elmore County with more being planned. Boise County has declared a local emergency due to the threat to traffic on Highway 55. Boise County and ISDA officials are reviewing options to see what can be done to prevent the crickets from affecting vehicle traffic on the hill. Large numbers of crickets crushed by passing vehicles can cause hazardous driving conditions by making the road slick.
There have also been reports of crickets in Owyhee County near Murphy.
Alfalfa Weevil Infesting Hay Fields
Alfalfa All Locations
Posted on: May 15, 2002 by Ben Simko
Alfalfa weevil infestations are causing varying degrees of damage to many hay fields in Malheur County. Tim Kurth, Farmers Supply Coop has reported treatable levels of alfalfa weevil in several fields in the Vale area and assisted growers on management decisions. Hay growers are advised to check their fields now to assess weevil infestation levels and decide if treatment is necessary. Weather conditions, plant vigor, irrigation schedules, cutting date, previous history of weevils in the fields are all important factors to determine if treatment is justified. See the Alfalfa Weevil Reference page (click on More information….) for IPM resources.
sugarbeet root maggot
Sugarbeets All Locations
Posted on: May 14, 2002 by Jerry Neufeld
According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we have accumulated 360 growing degree days as of May 13, 2002. What this means is that any day now overwintering root maggot pupa will begin to emerge as adults and begin flying. In about 7-10 days maggots will begin feeding on sugarbeet roots. Terry Cane from The Amalgamated Sugar Company has also confirmed the siting of adult root maggot flies. For treatment options see the ?Sugarbeet Root Maggot? reference page.
Lygus Bug - First Hatch
Alfalfa Seed All Locations
Posted on: May 14, 2002 by Ben Simko
Lygus bug degree-day model, through May 13, indicates Ontario and Parma areas have accumulated 225 and 228 degree-day units respectively. Peak first hatch (1st & 2nd instars) is predicted at 275 degree-days and the current forecast indicates peak hatch to occur on or near May 19. Due to cooler weather experienced this spring the 2002 hatch in the Ontario area will be 6 days later than last year and in the Parma area 11 days later than 2001. Small nymphs are beginning to appear in fields in the Adrian, Big Bend, Nyssa, and Ontario areas. Traces of floral buds are starting to also show in established fields. View Lygus Reference Page to find links to degree day calculators, DD maps, and to get daily Lygus heat unit updates for Ontario, OR, Parma, Caldwell, and Boise, ID seed production areas.
wireworms
Corn All Locations
Posted on: May 10, 2002 by Jerry Neufeld
Wireworms are damaging sweet corn seed fields in the Melba area. According to the literature, corns fields following pasture or alfalfa are most prone to wireworms. Information provided by Terry Drye.
Coddling Moth
Apple All Locations
Posted on: May 6, 2002 by Tim Davis
The biofix date for the Coddling Moth has been set for April 29. Using this date on the degree-day calculator made available on the Oregon State Universities website the first hatch will not occur until May 25. This date is later than previous years as we have had a cool spring. Another alert will be posted 7-10 days before the predicted hatch.
cereal leaf beetle
Small Grains All Locations
Posted on: April 23, 2002 by Jerry Neufeld
Cereal leaf beetle larvae have been found in winter wheat north of the interstate near Meridian. Treat when there are three larvae or eggs per plant up to the boot stage. Although CLB is widespread in Canyon County, there are hot spots south of Nampa and near Kuna. Look for the CLB to move into spring grains in the near future. Information provided by Duane Yamamoto and Producers Supply Coop.
Idaho and Oregon Alfalfa Seed Growers Winter Meeting
Announcements All Locations
Posted on: January 18, 2002 by Ben Simko
The 2002 Idaho/Oregon Alfalfa Seed Growers winter meeting will be held Wednesday, January 23 at the Nampa Civic Center. The meeting starts at 8:45 a.m. and will include topics covering pest management research, drip irrigation trials, market analysis, and GMO alfalfa. Growers and allied industry are welcome to attend but RSVP is required by January 18. Call 208-888-0988 or
541-881-1417 to RSVP or for more information.
Idaho & Oregon Alfalfa Seed Growers Winter Meeting January 2
Announcements All Locations
Posted on: January 16, 2002 by Ben Simko
The 2002 Idaho/Oregon Alfalfa Seed Growers winter meeting will be held Wednesday, January 23 at the Nampa Civic Center. The meeting starts at 8:45 a.m. and will include topics covering pest management research, drip irrigation trials, market analysis, and GMO alfalfa. Growers and allied industry are welcome to attend but RSVP is required by January 18. Call 208-888-0988 or 541-881-1417 to RSVP or for more information.
Outback Steakhouse Certificate Winners
Announcements All Locations
Posted on: November 26, 2001 by Jerry Neufeld
We would like to send our sincere thanks to all of you that participated in the evaluation survey for the first year of TVPestAlert.net operations. We received some good information and will do our best to address the issues identified so we can make this website more useful to you.
The winners of the two $50 gift certificates to the Outback Steakhouse are:
Dan Silveria; Farmer from Caldwell, ID and Mike Huff; Fieldman from Dairyland Seed Co. in Homedale, ID.
Please remember to submit meeting announcement information to us and we will post it on the website over the winter.
Thanks again,
Fruit Field Day
Announcements All Locations
Posted on: August 29, 2001 by Jerry Neufeld
The University of Idaho is sponsoring the annual Fruit Field Day at the Parma R and E Center on Thursday, September 6, 2001 from 9 a.m. to noon. Commercial fruit growers, small-acreage producers, home gardeners and interested members of the public are all welcome. The tour will begin on the lawn of the main office.
Along with taste-testing, participants will learn about fruit-related research and extension trials being conducted at the center. In addition to variety trials, these experiments focus on orchard and vineyard establishment, peach and nectarine training and the effects of the potential growth regulator Messenger in apples.
For more information, contact UI pomologist/viticulturist Essie Fallahi or extension horticulturist Michael Colt at 208/722-6701 in Parma.
Black Bean Aphid in Sugarbeets
Sugarbeets All Locations
Posted on: August 17, 2001 by Jerry Neufeld
Black Bean Aphids have been found in sugarbeet fields in the Star and Eagle areas. If you find these aphids in your sugarbeet fields, contact your field representative from the Amalgamated Sugar Company about your treatment options.
powdery mildew in sugarbeets
Sugarbeets All Locations
Posted on: August 16, 2001 by Jerry Neufeld
Amalgamated Sugar Company is reporting powdery mildew is being found in sugarbeet fields in a widespread area around Eagle, Notus, Wilder and Emmett.
aphid flyer
Potato All Locations
Posted on: July 27, 2001 by Jerry Neufeld
A new aphid flyer with information about green peach aphid is posted on the southern Idaho Entomology page at: http://www.uidaho.edu/so-id/entomology/
Virus disease in onions
Onion All Locations
Posted on: July 26, 2001 by Lynn Jensen, Brad Geary, Vincent Bijman
Iris yellow spot virus has been positively identified on onions in several locations of the Treasure Valley. These sites include the Oregon Slope area and the Nyssa area. In addition, plants with similar symptoms have been seen in the Homedale/Marsing and Parma areas.
Symptoms include straw colored chlorotic ring spots on leaves, followed by deterioration of the leaf. In Israel the disease has led to a rapid die of leaf tissue, causing the field to look like a straw field. Their name for the disease is "straw bleaching". The disease is known to be transmitted by onion thrips, but thus far Western Flower thrips have not been associated with the disease.
The disease has probably been here for several years, but not identifyed until now. A number fields died eary last year, probably due to the virus. It has been identifyed in both bulb and seed crops.
Fungicides are not effective. Probably most of the plant infection has already occured. More information will be sent out as it becomes available.
Powdery Mildew in Hops
Hops All Locations
Posted on: July 23, 2001 by Jerry Neufeld
Hop Powdery mildew continues to spread to hop fields in southwestern Idaho. Current weather conditions in this area continue to favor the growth, reproduction, and spread of hop powdery mildew. In addition, most of the hop acres in Canyon County are planted to powdery mildew-susceptible varieties. Fields of Zeus hops are highly susceptible and should be treated prophylactically with a protectant fungicide. As more acres of Zeus become infected, Galena, Willamette and Chinook hops may need to be treated as well. It is imperative to check hop yards at least once per week to determine the level of powdery mildew and to assess the effectiveness of treatments. Information provided by Jim Barbour from the U of Idaho, Parma Research and Extension Center.
Corn Earworm
Corn All Locations
Posted on: July 23, 2001 by Jerry Neufeld
The growing degree day (gdd) totals for corn earworm through July 25, 2001 are:
Caldwell-1360
Nampa-1359
Parma-1634
The next generation of corn earworm will lay eggs between 1450 and 1650 gdd. The OSU model predicts Caldwell and Nampa will reach 1450 gdd on July 30.
numerous green peach aphids
Potato All Locations
Posted on: July 20, 2001 by Brad Geary
Numerous green peach aphids have been found in potato fields near Parma, Middleton, Marsing and Caldwell. We are counting 40-50 aphids/100 leaves in some fields. The Mountain Home, Glenns Ferry area fields do not appear to have the high populations we are experiencing west of Boise. University of Idaho potato scouts have counted 1-2 aphids/100 leaves in the Mountain Home, Glenns Ferry area. We hope that aphid control measures have been implemented in your potato management programs.
corn earworm
Corn All Locations
Posted on: July 19, 2001 by Jerry Neufeld
Corn earworm moths will begin laying eggs in the silk of corn that is silking at about 1300 growing degree days(gdd). According the Oregon State University Model, we are at 1247 gdd in Caldwell and 1242 gdd in Nampa. At Parma we are at 1493 gdd which is the time for second generation egg laying. You will want to scout fields take control measures as needed.
Corn Earworm
Corn All Locations
Posted on: July 13, 2001 by Jerry Neufeld
Corn earworm moths will begin laying eggs in the silk of corn that is silking at about 1300 growing degree days (gdd). According the Oregon State University Model, we are at 961 gdd in Caldwell and will reach 1300 gdd on approximately July 30. In Nampa we are at 1161 gdd and will reach 1300 gdd on approximately July 21. At Parma we are at 1300 gdd now. You will want to scout fields that are silking around 1300 gdd and take control measures as needed.
Powdery mildew on sugarbeets
Sugarbeets All Locations
Posted on: July 10, 2001 by Bob HuffakerBen Simko
Powdery mildew is showing up on sugarbeets in the Treasure Valley. Remember that Larado has recieved a section 18 label for Idaho and Oregon. This alert was submitted once, but at least some people did not recieve it, so it is being resubmitted.
Powdery mildew on sugarbeets
Sugarbeets All Locations
Posted on: July 10, 2001 by Bob Huffaker
Powdery mildew has been found on sugarbeets in the Valley. Remember that Larado has been cleared for use in both Idaho and Oregon.
information about potato insects
Potato All Locations
Posted on: July 10, 2001 by Jerry Neufeld
There is a new newsletter at the U of Idaho's Southern Idaho Entomology Homepage. The most current newsletter contains information about the Colorado Potato Beetle and Green Peach Aphid. Please go to the following address to view the pages: http://www.uidaho.edu./so-id/entomology
Green Peach Aphids on Potatoes
Potato All Locations
Posted on: June 11, 2001 by Brad Geary
Green peach aphids have been found at the Parma Research and Extension Center in aphid traps, at local nurseries, and in potatoes in home gardens. The numbers have been low, but they are out there. If you have not started scouting your fields please start.
Western Cherry Fruit Fly
All Crops All Locations
Posted on: May 24, 2001 by Jerry Neufeld
WESTERN CHERRY FRUIT FLY
Degree-day calculations for the Western Cherry Fruit Fly using the Oregon State University On-Line Phenology and Degree Day Models at the Internet WebSite: http://ippc2.orst.edu/cgi-bin/ddmodel.pl?clm
Parma, ID May 22, 2001 = 991.2
Nampa, ID May 14, 2001= 790.6
Caldwell, ID May 15, 2001 = 758.5
First emergence should occur by the end of this week. First hatch can be expected at around 830 Degree-days control applications are recommended prior to and no later than 1060 Degree-day accumulations according to "Orchard Pest Management" as published by the "Good Fruit Grower", Yakima, Wa. 1993.
Michael E. Cooper, Chief
Bureau of Feeds and Plant Services
Plant Industries Division
Idaho State Department of Agriculture
P.O. Box 790
Boise, ID 83701
Phone: (208) 332-8620
Fax: (208) 334-2283
e-mail: mcooper@agri.state.id.us
Cell: (208) 850-1125
Cell e-mail: 2088501125@mobile.att.net
