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2022 Fall Lawn Fertilization & Care
General Landscape and Garden Treasure Valley, Treasure Valley - Idaho, Northern Idaho
2022 Fall Lawn Fertilization & Care
Posted on: September 16, 2022 by Ruth Givens
University of Idaho turf specialists recommended splitting the application of lawn fertilization into three (3) applications; early May, early September, and late October/November. Review the first reference below to identify fertilization application amounts using a soil test result or the second reference for general recommendations for southern Idaho. Apply according to label directions.
If your lawn is suffering from soil compaction or development of a thick thatch layer fall is the optimal time to core aerate. For more information on core aeration review Lawn Aeration.
Fall is a great time to control perennial weeds in the landscape if opting to use herbicides. Perennials will begin storing carbohydrates in the roots promoting herbicides to be drawn deeper into the root system and allowing for better control.
If there are additional questions on lawn care or weed management reach out to a local University of Idaho Extension office.
References:
Using Soil Test for Garden Fertilization
https://drive.google.com/file/d/16svAaPIqRcsN8VyGMc_p5SMoOO-hImv8/view
Southern Idaho Lawns
https://drive.google.com/file/d/1EcuP1OErzgRMMHN8l4fugN0VEXkLI-gv/view
Lawn Aeration
https://planttalk.colostate.edu/topics/lawns/1505-lawn-aeration/
Find University of Idaho Extension
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
All Crops All Locations
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)
2022 Reduce Watering Frequency During Fall
General Landscape and Garden Treasure Valley, Treasure Valley - Idaho, Northern Idaho
Reduced Watering
Posted on: September 9, 2022 by Ruth Givens
The days are shortening, and evening temperatures are cooling. Now is the time to adjust the frequency between irrigation days for the landscape and garden.
Lawn irrigation systems can be set to increase the number of days between irrigation based on soil texture. Adjusting the frequency of watering versus the run time allows for replenishment of the water holding capacity and usable water in the soil profile. Review reference links one and two below for greater explanation. This deep and infrequent method encourages a deeper root growth of plants.
A reminder to deep water trees and shrubs prior to shutoff of irrigation water.
References:
Watering Home Lawns and Landscape, University of Idaho
https://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1098.pdf
Watering Home Lawns: How Much and How Often, University of Idaho
https://www.extension.uidaho.edu/publishing/pdf/CIS/CIS1157.pdf
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.
2022 Apple Codling Moth, Third Generation
General Landscape and Garden Treasure Valley, Treasure Valley - Idaho, Northern Idaho
Apple Codling Moth
Posted on: August 22, 2022 by Ruth Givens
The third generation of codling moth egg hatch is forecasted to begin August 24. Current degree day models indicate 2096 DD as of August 22. Third generation egg hatch begins at 2160-2200 DD.
Continue to keep fruit protected through September 15. Protection of fruit can stop after this time even if fruit has not been harvested. By mid-September there is not enough day length to signal eggs on the fruit to hatch.
Follow label directions for harvest and post-harvest requirements.
Reference Materials:
https://pnwhandbooks.org/insect/tree-fruit/apple/apple-codling-moth
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1879&context=extension_curall
https://extension.colostate.edu/topic-areas/insects/codling-moth-control-in-home-plantings-5-613/
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.
2022 Blossom End Rot
General Landscape and Garden Treasure Valley, Treasure Valley - Idaho, Northern Idaho
Blossom End Rot
Posted on: August 8, 2022 by Ruth Givens
Blossom-end rot is showing up on tomato plants. Pepper, eggplant, squash, and watermelon can also be affected.
Blossom-end rot is a physiological disorder due to a shortage of calcium in young fruit. Blossom-end rot often occurs when soil moisture fluctuates as water stress interferes with calcium uptake in the plant. Most Treasure Valley garden soils have enough calcium and additions are not recommended. Refer to soil test results.
Cultural control practices: Use infrequent deep irrigation to keep the soil uniformly moist and avoid water stress or fluctuating soil moisture. Organic mulch can be used to prevent wide fluctuations in soil moisture. Avoid over fertilizing and hoeing or cultivating near the roots.
https://utahpests.usu.edu/ipm/notes_ag/veg-blossom-end-rot
https://pnwhandbooks.org/plantdisease/host-disease/tomato-solanum-lycopersicum-blossom-end-rot
https://extension.usu.edu/vegetableguide/tomato-pepper-eggplant/blossom-end-rot
corn earworm - 2022
Corn Treasure Valley - Idaho
corn earworm
Posted on: August 5, 2022 by Jerry Neufeld
The online Phenology and Degree Day Model (GDD) from Oregon State University is being used to estimate when the summer generation of corn earworm moths will emerge. This is the generation of moths that lay eggs in corn that is silking at the time when they emerge. The link to the GDD calculator for Corn Earworm is below.
The GDD model uses January 1 as a biofix, 55 and 92 as the temperature parameters. Summer moths will emerge after 1300 GDD have accumulated. These moths will then begin laying eggs in fresh corn silk. This model also estimates the eggs will hatch and larvae will begin feeding on corn ears 73 GDD later. According to this model egg hatch is beginning about now. Egg laying in most, if not all, Treasure Valley locations will take place in this approximate time frame. Larval feeding will begin 3 to 4 days after egg hatch.
The links below will take you to the websites where you can use the growing degree day model and also view various treatment methods based on the type of corn that you are growing.
» https://pnwhandbooks.org/insect/vegetable-seed/corn/corn-seed-corn-earworm-sweet-corn-only
» https://pnwhandbooks.org/insect/vegetable/vegetable-pests/hosts-pests/corn-sweet-corn-earworm
» https://pnwhandbooks.org/insect/agronomic/field-silage-corn/field-silage-corn-corn-earworm
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
2022 Peach Twig Borer, Second Generation
All Crops Treasure Valley, Treasure Valley - Idaho, Northern Idaho
Posted on: July 27, 2022 by Ruth Givens
The second generation of peach twig borer will has begun egg hatch. Current degree day models indicate 1217 as of July 27. Second generation cover sprays begin at 1200 DD. First cover sprays for second generation should be applied now.
For management control options review the PNW Handbook link below to select a control option appropriate for the operation. Apply according to label directions.
https://pnwhandbooks.org/insect/tree-fruit/peach-nectarine/peach-nectarine-peach-twig-borer
https://climate.usu.edu//includes/pestFactSheets/Peach-Twig-Borer.pdf
https://utahpests.usu.edu/slideshows/ppt/05sh-insects-ptbcontrol.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.
A BIG Week for Cereals Field days! Let's GO, Idaho!
Small Grains Eastern Idaho
Cereals
Posted on: July 18, 2022 by Juliet Marshall
Tuesday - ABERDEEN R&E Center. 8 AM registration UI and LCS joint field day - lunch provided Wednesday - IDAHO FALLS. 4:00 PM start - Dinner provided (Sealander Park) Thursday - SODA SPRINGS. 4 PM start - Dinner provided at Hooper Springs |
See the Attached PDF file for locations and directions
» UI_Extension_2022_Cereals_Field_Days_For_Southern_Eastern_ID.pdf
Ag Talk Tuesday - Cancelled for Tuesday July 19th
Small Grains Eastern Idaho
Wheat, barley, etc
Posted on: July 18, 2022 by Juliet Marshall
Ag Talk Tuesday Registrants,
Thank you for registering for the University of Idaho Ag Talk Tuesday sessions.
Please note that the July 19th session is cancelled. All organizers will be at different meetings and unavailable.
Ag Talk Tuesday sessions will return for August 2 and August 16. You can view the scheduled topics here: https://www.uidaho.edu/extension/news/ag-talk-tuesday
Sincerely,
Your Ag Talk Tuesday Oganizers:
Kasia Duellman
Pam Hutchinson
Doug Finkelnburg
Juliet Marshall
Olga Walsh
--------------------------------------
| KASIA M. DUELLMAN, Ph.D. Assistant Professor of Plant Pathology and Extension Specialist |
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
2022 Apple Codling Moth, Second Generation
General Landscape and Garden Treasure Valley, Treasure Valley - Idaho, Northern Idaho
Posted on: July 15, 2022 by Ruth Givens
The second generation of codling moth will begin egg hatch this week. Current degree day models indicate 1078 DD as of July 15. Beginning egg hatch begins at 1100 DD, currently forecasted for July 16.
Rotate among insecticide classes between generations to prevent development of insecticide resistance. Reference publication links to view insecticide options for commercial or residential sites. Commercial products with the active ingredients including; spinetoram, acetamiprid, chlorantraniliprole, etc. Residential products with active ingredients including; lambda-cyhalothrin (restricted use pesticide), or esfenvalerate and Spinosad (general-use pesticides). Non-spray option is to bag the fruit.
This pest needs prevention all season long for clean fruit.
https://pnwhandbooks.org/insect/tree-fruit/apple/apple-codling-moth
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1879&context=extension_curall
https://extension.colostate.edu/topic-areas/insects/codling-moth-control-in-home-plantings-5-613/
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?
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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.
