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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 Spotted Wing Drosophila on Blackberries
General Landscape and Garden Treasure Valley
Spotted Wing Drosophila (Drosophila suzukii)
Posted on: August 16, 2021 by Nic Usabel
A Canyon County Master Gardener has detected Spotted Wing Drosophila (SWD) in blackberries. SWD targets a wide variety of fruits including raspberries, blackberries, and strawberries. SWD can damage ripe-to-overripe fruit by depositing eggs directly beneath the surface. Review the Utah State University publication linked in the reference material for monitoring methods.
To recognize SWD damage, look very closely for scarring or spotting on the fruit surface; liquid exuding (when squeezed) out of scar/hole where eggs were laid; softening, collapsing and/or bruising of fruit at damage site; small white larvae and pupae that can be seen with naked eye if fruit is opened; and, under a microscope, two hair-like filaments sticking out of fruit where they are connected to a white egg within the fruit can sometimes be seen. Reach out to your local Extension office if you need help with identification or review the linked reference materials for additional details.
Non-Chemical Control
- Pick ripe fruits frequently to minimize potential SWD host material.
- Fine-mesh floating row covers can protect low growing fruits.
- Use traps around fruit production areas to capture and kill adult flies.
- Damaged or fallen fruit should be removed, buried, solarized, crushed or stored in sealed container to exclude flies.
Chemical Control
- Should be coupled with monitoring efforts. Rotate chemical families to avoid resistance and follow the label for each crop.
- See specific fruit for recommended chemicals. Review links below.
- Pesticide families that help control SWD include: spinosyns, pyrethroids, carbamates, and organophosphates. Follow the label to determine appropriate rates, risks, and fruits in which it can be applied.
- Do not apply when bees and other pollinators are present, such as when plants are flowering or when pollinators are active.
Reference Materials:
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/
2021 Blossom-End Rot
General Landscape and Garden Treasure Valley
Blossom-End Rot
Posted on: August 12, 2021 by Nic Usabel
Blossom-end rot is showing up on tomato and pepper plants. 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. Some varieties are more prone to blossom-end rot than others.
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.
- Avoid hoeing or cultivating near the roots.
Reference Materials:
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.
2021 Tobacco Budworm, Petunia & Geranium
General Landscape and Garden Treasure Valley
Tobacco Budworm (Chloridea virescens)
Posted on: August 11, 2021 by Nic Usabel
Tobacco budworm damage has been observed by Canyon County Master Gardeners during and Integrated Pest Management walk in Caldwell. Now is the time to monitor your petunia and geranium plants which are commonly affected by this pest.
Tobacco budworm feeds on buds and petals. The adult is a moth which is light green with gray or brown overtones and a few wavy, creamy colored bands. The moth is active in the early evening and lays eggs on buds or leaves. The caterpillar varies in overall color but is common in dark forms, green, or light brown. The caterpillar becomes full grown in about a month at which point it will burrow into the soil and transform to a pupal stage. The adult will emerge and begin the cycle again. Overwintering pupae are generally killed if exposed to temperatures below 20°F. Maintaining potted plants in protected areas (garage) can allow budworm pupae to survive in the soil.
Control
• Monitor and detect early. Check buds and flowers for small holes.
• A small planting could allow for handpicking as a control. Most caterpillars hide around the base of the plant in the day and climb onto plants at dusk or early evening.
• Application of microbial insecticide Bt Bacillus thuringiensis should be made late in the day and applied to provide good coverage.
• Additional insecticide options are available and should be applied when pollinators are not active or present on the plant.
Reference Materials:
• https://extension.colostate.edu/topic-areas/insects/tobacco-geranium-budworm-5-581/
• https://blogs.k-state.edu/kansasbugs/2016/07/15/geraniums-and-petunias-beware-of-the-tobacco-budworm/
• https://ag.umass.edu/greenhouse-floriculture/photos/budworm-petunia-calibrachoa-geranium-0
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.
2021 Apple Codling Moth, Third Generation
General Landscape and Garden Treasure Valley
Codling Moth Cydia pomonella
Posted on: August 5, 2021 by Nic Usabel
The third generation of codling moth egg hatch is forecasted to begin August 10. Current degree day models indicate 2030 DD as of August 4. 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:
- PNW Management Handbook: Codling Moth
- Codling Moth, Utah State University
- Codling Moth, Colorado State University
Corn Earworm Counts - 8/4/21
Corn Treasure Valley
corn earworm
Posted on: August 4, 2021 by Jerry Neufeld
Below are the corn earworm moth counts from this morning, August 4. The counts are increasing in certain areas, as you can see below. If you have corn with fresh silk you may want to increase your scouting in areas where the counts are increasing.
Location Date
23-Jul 28-Jul 4-Aug
South of Nampa 2 2 9
Melba 1 0 0
Homedale 4 12 21
Wilder 3 3 29
Roswell 0 4 22
Middleton 2 0 3
Total 12 21 84
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.
Corn Earworm Counts - 7/28/21
Corn Treasure Valley
corn earworm
Posted on: July 29, 2021 by Jerry Neufeld
Below are the corn earworm
moth counts from this morning, July 28. At
this time counts are still low, except they are rising a little bit in the
Homedale area. I will check the traps
again in a few days to see if the numbers are increasing.
Location | Date | |
23-Jul | 28-Jul | |
South | 2 | 2 |
Melba | 1 | 0 |
Homedale | 4 | 12 |
Wilder | 3 | 3 |
Roswell | 0 | 4 |
Middleton | 2 | 0 |
Total | 12 | 21 |
Corn Earworm Counts - 7/23/21
Corn Treasure Valley
corn earworm
Posted on: July 23, 2021 by Jerry Neufeld
Below are the corn earworm moth counts from this morning, July 23. At this time there doesn’t appear to be a great deal of corn earworm moths around the valley. I will check the traps again in a few days to see if the numbers are increasing.
Location July 23
South on Nampa 2
Melba 1
Homedale 4
Wilder 3
Roswell 0
Middleton 2
Total 12
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/
Cereal Field Days! Idaho Falls TODAY, Aberdeen Wednesday, Soda Springs Thursday!
Small Grains Eastern Idaho
Cereals Field Days
Posted on: July 20, 2021 by Juliet Marshall
Idaho Falls Tuesday, July 20
4 PM at 2550 South, 45th West (parking at Thiel's residence, not on side of road), followed by Grain Growers dinner @ Sealander Park
Aberdeen / LCS Field Day Wednesday, July 21
8:20 AM registration, program starts at 8:30 AM Aberdeen R&E
Center. 1693 S 2700 W, Aberdeen, ID. Lunch provided.
Soda Springs Thursday, July 22
4 PM Head north on Government Dam Road, take a right on China Hat Road, 1/4 mile on north side of road
» https://www.uidaho.edu/extension/cereals/scseidaho
» UI_Extension_2021_Cereals_Field_Days_For_Southern_Eastern_ID2.pdf
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.
2021 Peach Twig Borer, Second Generation
General Landscape and Garden Treasure Valley
Peach Twig Borer (Anarsia lineatella)
Posted on: July 15, 2021 by Nic Usabel
The second generation of peach twig borer is beginning egg hatch. Current degree day models indicate 1253 degree days (DD) as of July 14. Second generation cover sprays begin 1200 - 1300 DD. First cover sprays for second generation should be applied now.
To view management control options review the PNW Handbook link below to select an option appropriate for your setting. Apply according to label directions.
Reference Masterials
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.
Corn Earworm - 2021
Corn Treasure Valley
corn earworm
Posted on: July 12, 2021 by Jerry Neufeld
I am once again
collaborating with Charter Seed Co. and Crookham Co. on a project to trap corn
earworm moths. Traps will be set out in
corn fields at various locations near Melba, Middleton, Wilder, Homedale, and
Caldwell. I will check the traps every
few days and post the moth counts to this website.
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, we will
reach 1300 GDD in the Caldwell area about July 12, and will reach 1300 GDD in
the Parma area about July 15. This is 10
to 14 days earlier than last year. 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.
Traps will go out soon. The first moth counts will be posted a few
days after the traps are set out.
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://uspest.org/cgi-bin/ddmodel.us
» 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
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.
