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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
Onion Thrips update 6/22/2019
Onion Treasure Valley
Onion thrips
Posted on: June 22, 2019 by Stuart Reitz
Below are the monitoring results for this week. Fields were checked Thursday afternoon, Friday, and a few Saturday morning. There are 7 – 10 fields in each area.
Not surprisingly, there’s been a sharp increase in thrips in some areas. In other areas, numbers have held fairly steady. Some of the difference reflects where people are with their insecticide programs. For example, fields that have already received a second Movento application tend to have few immatures. Some of those that haven’t or just had a recent application tend to have more immatures and a higher proportion of immatures relative to adults. One way to see when the residual effect of Movento is declining is to see if the proportion of immatures is increasing.
I did find two Iris yellow spot infected plants this week so be on the lookout for it.
Despite a couple of brisk days this week, the degree days for June have been about the same as last year. For the season, 2019 is a couple of days behind 2018 but still a few days ahead of the historic average.
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22
Oregon Slope/Weiser 0.03 0.04 0.06 0.15 2.47 4.41
Vale 0.15 0.55 1.64 2.60 4.79 6.44
Ontario 0.07 0.03 0.78 0.71 1.92 4.35
Nyssa 0.02 0.07 1.32 1.03 3.67 5.20
Adrian 0.02 0.22 1.60 1.67 2.15 2.63
Fruitland 0.05 0.03 0.19 0.94 1.29 6.12
Parma - 0.09 1.60 0.67 2.75 7.89
Overall Average 0.06 0.15 1.03 1.11 2.72 5.29
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22
Oregon Slope/Weiser 0.00 0.00 0.00 0.26 5.45 12.55
Vale 0.00 0.41 6.28 4.20 11.16 5.99
Ontario 0.00 0.00 3.60 1.71 8.71 22.81
Nyssa 0.00 0.02 3.56 5.52 8.00 10.58
Adrian 0.00 0.00 8.42 3.64 5.45 1.10
Fruitland 0.00 0.00 0.16 2.20 3.39 7.62
Parma - 0.00 1.97 4.37 1.66 2.90
Overall Average 0.00 0.06 3.43 3.13 6.26 9.08
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22
Oregon Slope/Weiser 0.03 0.04 0.06 0.42 7.92 16.96
Vale 0.15 0.96 7.92 6.79 15.96 12.43
Ontario 0.07 0.03 4.38 2.42 10.63 27.16
Nyssa 0.02 0.09 4.88 6.55 11.67 15.78
Adrian 0.02 0.22 10.01 5.31 7.61 3.73
Fruitland 0.05 0.03 0.35 3.14 4.68 13.74
Parma - 0.09 3.58 5.03 4.41 10.79
Overall Average 0.06 0.21 4.45 4.24 8.98 14.37
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22
Oregon Slope/Weiser 0% 4% 6% 14% 68% 81%
Vale 0% 31% 64% 54% 81% 83%
Ontario 0% 3% 34% 35% 73% 89%
Nyssa 0% 5% 73% 56% 70% 87%
Adrian 0% 19% 57% 53% 70% 86%
Fruitland 0% 3% 17% 50% 54% 94%
Parma 0% 7% 54% 41% 89% 84%
Overall Average 0% 10% 43% 43% 72% 86%
Onion Thrips update 6/15/2019
Onion Treasure Valley
Onion thrips
Posted on: June 16, 2019 by Stuart Reitz
With the warmer weather, thrips numbers continue to increase around the valley, with a greater and greater proportion of plants having thrips on them. The sharp increase in abundance in the Slope / Weiser area are from fields that had not been sprayed yet. Similar increases in other areas reflect fields where counts were taken ahead of an insecticide treatment. Keep in mind that adults continue to come into fields from outside sources so their numbers rebound soon after insecticide applications followed by increases in the immatures. Monitoring fields can help you prioritize and schedule fields for applications.
We have not observed Iris yellow spot virus yet in this season’s crop.
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15
Oregon Slope/Weiser 0.03 0.04 0.06 0.15 2.47
Vale 0.15 0.55 1.64 2.60 4.79
Ontario 0.07 0.03 0.78 0.71 1.92
Nyssa 0.02 0.07 1.32 1.03 3.67
Adrian 0.02 0.22 1.60 1.67 2.15
Fruitland 0.05 0.03 0.19 0.94 1.29
Parma - 0.09 1.60 0.67 2.75
Overall Average 0.06 0.15 1.03 1.11 2.72
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15
Oregon Slope/Weiser 0.00 0.00 0.00 0.26 5.45
Vale 0.00 0.41 6.28 4.20 11.16
Ontario 0.00 0.00 3.60 1.71 8.71
Nyssa 0.00 0.02 3.56 5.52 8.00
Adrian 0.00 0.00 8.42 3.64 5.45
Fruitland 0.00 0.00 0.16 2.20 3.39
Parma - 0.00 1.97 4.37 1.66
Overall Average 0.00 0.06 3.43 3.13 6.26
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15
Oregon Slope/Weiser 0.03 0.04 0.06 0.42 7.92
Vale 0.15 0.96 7.92 6.79 15.96
Ontario 0.07 0.03 4.38 2.42 10.63
Nyssa 0.02 0.09 4.88 6.55 11.67
Adrian 0.02 0.22 10.01 5.31 7.61
Fruitland 0.05 0.03 0.35 3.14 4.68
Parma - 0.09 3.58 5.03 4.41
Overall Average 0.06 0.21 4.45 4.24 8.98
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8 6/15
Oregon Slope/Weiser 0% 4% 6% 14% 68%
Vale 0% 31% 64% 54% 81%
Ontario 0% 3% 34% 35% 73%
Nyssa 0% 5% 73% 56% 70%
Adrian 0% 19% 57% 53% 70%
Fruitland 0% 3% 17% 50% 54%
Parma 0% 7% 54% 41% 89%
Overall Average 0% 10% 43% 43% 72%
Potato Psyllids in the Treasure Valley
Potato Treasure Valley
Posted on: June 14, 2019 by Stuart Reitz
Potato psyllids detected in the Treasure Valley.
The potato pest monitoring network in Malheur County found potato psyllids in 45% of checked fields last week (Traps were placed May 31 and collected June 7). A total of 21 psyllids were collected this past week from the 20 fields currently in the monitoring network. The psyllids will be tested for the Zebra Chip bacterium.
For information on psyllid and other pest management in potatoes, please see the 2019 Integrated Pest Management Guidelines for Insects and Mites in Idaho, Oregon and Washington Potatoes, available at http://www.nwpotatoresearch.com/pest-library/pest-management-options/.
» http://www.nwpotatoresearch.com/pest-library/pest-management-options/
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
Onion Thrips update
Onion Treasure Valley
Onion thrips
Posted on: June 1, 2019 by Stuart Reitz
We had a sharp increase in thrips numbers in most areas over the past week. Fields were checked on Thursday and Friday (5/30 – 5/31). Thrips were in 90% of the fields checked this week and are being found on more plants per field now. The overall increase was largely a result of thrips beginning to reproduce in fields (as marked by the increase in immature thrips). Numbers tend to be higher in fields with larger plants. The highest numbers have been in red onion fields with plants at the 4-5 leaf stage and in early onion fields (e.g. Spanish Medallion and other early varieties). The highest numbers in the network were about 32 per plant in a red onion field (about 85% being immatures). The lowest numbers have been in fields at the 1-2 leaf stage, especially those in the Oregon Slope/Weiser area.
Expect additional movement of thrips into onion fields as more alfalfa fields get their first cutting and as rangeland weeds begin to dry down and senesce. Populations will increase rapidly with the warmer, drier weather in the forecast.
Adults per Plant
Growing Area 5/15 5/25 5/31
Oregon Slope/Weiser 0.03 0.04 0.06
Vale 0.15 0.55 1.64
Ontario 0.07 0.03 0.78
Nyssa 0.02 0.07 1.32
Adrian 0.02 0.22 1.60
Fruitland 0.05 0.03 0.19
Parma - 0.09 1.60
Overall Average 0.06 0.15 1.03
Immatures per Plant
Growing Area 5/15 5/25 5/31
Oregon Slope/Weiser 0.00 0.00 0.00
Vale 0.00 0.41 6.28
Ontario 0.00 0.00 3.60
Nyssa 0.00 0.02 3.56
Adrian 0.00 0.00 8.42
Fruitland 0.00 0.00 0.16
Parma - 0.00 1.97
Overall Average 0.00 0.06 3.43
Total average per Plant
Growing Area 5/15 5/25 5/31
Oregon Slope/Weiser 0.03 0.04 0.06
Vale 0.15 0.96 7.92
Ontario 0.07 0.03 4.38
Nyssa 0.02 0.09 4.88
Adrian 0.02 0.22 10.01
Fruitland 0.05 0.03 0.35
Parma - 0.09 3.58
Overall Average 0.06 0.21 4.45
% Plants with Thrips
Growing Area 5/15/2019 5/25/2019 5/31/2019
Oregon Slope/Weiser 3% 4% 6%
Vale 15% 31% 64%
Ontario 7% 3% 34%
Nyssa 2% 5% 73%
Adrian 2% 19% 57%
Fruitland 5% 3% 17%
Parma - 7% 54%
Overall Average 6% 10% 43%
A couple of notes unrelated to onion thrips
1 – As a result of the cool, wet spring, downy mildew has shown up in some overwinter onions in the Columbia Basin. I haven’t seen signs of it in the Treasure Valley, but it’s worth keeping an eye out for it. Even with the wet weather, I don’t think the bulb crop is at high risk since the crop is relatively small and doesn’t have a dense canopy yet that keeps moisture levels high on the leaves. It could be a greater risk for seed crops that have a denser canopy now. Please let me know if you have concerns about it in your fields.
Thanks to Carrie Wohleb and Lindsey du Toit for the pictures of downy mildew on onion foliage and flower scapes.
2 – if you have sugarbeets, there have been reports of leafminer and armyworms in beet fields.
3 –June 13 2019: Snake River Weed Research Tour, Malheur Experiment Station, 595 Onion Ave, Ontario, OR, beginning at 8:30 AM
http://www.cropinfo.net/events.php
sugarbeet leafminer and armyworm
Sugarbeets Treasure Valley
leafminer and armyworm
Posted on: May 31, 2019 by Jerry Neufeld
The Amalgamated Sugar Company crop consultants are reporting that pockets of leaf miner and army worm are starting to pop up around various locations in Treasure Valley sugarbeet fields. The links below from the Pacific Northwest Insect Management Handbook describe the damage and also show the damage these pests cause. Please contact your Amalgamated Sugar crop consultant for more details and treatment options.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-leafminer
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-armyworm
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.
Crops, Soils and Technology Field Day at the UI Parma R and E Center
All Crops Treasure Valley
Posted on: May 10, 2019 by Jerry Neufeld
The University of Idaho Crops, Soils and Technology Field Day at the UI Parma Research and Extension Center is June 7, 2019; 8:45 to 1:00 pm, followed by lunch. Click on the pdf below for more information.
Ag Talk Tuesdays - Blackfoot, 8 AM, May 7, Idaho AgCredit, 188 W Judicial St
All Crops Eastern Idaho
Topics for this first session include but are not limited to small grains issues, early season weed control, and potato issues.
Posted on: May 3, 2019 by Juliet Marshall
We are starting this season's Ag Talk Tuesday!
The first Ag Talk Tuesday of 2019 is May 7, 8:00 AM in the conference room at Idaho AgCredit in Blackfoot, 188 W Judicial St: https://goo.gl/maps/BA9sEQsrGKDL9tQK9
Join UI Researchers, Extension Personnel, and agricultural professionals to learn about timely topics in crop production. These events will be offered on the first and third Tuesdays at 8AM throughout the growing season at different locations in eastern Idaho. Venue and location differ from session to session, so look for the announcements via Treasure Valley Pest Alerts (http://tvpestalert.net/), from UI Extension personnel, on the UI Extension Calendar (https://www.uidaho.edu/extension/news/calendar), and through the Potato Country website (https://potatocountry.com).
Topics for this first session include but are not limited to small grains issues, early season weed control, and potato issues.
Light breakfast fare will be provided (such as coffee, juice, and donuts).
lygus bug-alfalfa seed, 2019
Alfalfa Seed Treasure Valley
lygus bug
Posted on: May 2, 2019 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 175 degree days between January 1, 2019 and May 2, 2019. This is 5 days behind 2018, and the same as the 30-year average. Peak emergence of lygus bug 1st and 2nd instar nymphs should occur right around 272 accumulated degree days; this will occur around May 15, 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 4th instar nymphs are detected.
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”
Also, below are the links to the “alfalfa seed-lygus bug” page in the PNW Insect Management Handbook, and the Assail label on the Idaho State Department of Agriculture website.
» https://pnwhandbooks.org/insect/legume-grass-field-seed/alfalfa/alfalfa-seed-lygus-bug
» https://agri.idaho.gov/main/56-2/pesticides/product-registration-2/pesticide-label-search/
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
cutworms in sugarbeets in Jamieson, Oregon area
Sugarbeets Treasure Valley
cutworms
Posted on: April 25, 2019 by Jerry Neufeld
Amalgamated Sugar Company Field Consultant, Aaron Searle is reporting that cutworms and wireworms have been found in sugarbeet fields near Jamieson, Oregon. There are several species of cutworms that attack sugarbeets, but all are nocturnal, so you may see injury but not readily find the insect damaging the sugarbeets. Cutworms are usually worse in fields where there is crop residue, such as following alfalfa or corn. If you see “skips” in the field, dig around in the soil where you would have expected a plant and you will likely find the lower portion of a cut plant. Larvae are often found less than an inch below the soil surface near a damaged plant. Contact your TASCO Field Consultant for treatment options. Below is the link to the PNW Insect Management Handbook for cutworms in sugarbeets.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-cutworm
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
Worker Protection Standard Training
Announcements Treasure Valley
Posted on: April 3, 2019 by Jerry Neufeld
The Idaho State Department of Agriculture is hosting a Worker Protection Standard, Train the Trainer session in Caldwell, ID April 9, 2019. Click on the pdf below for more information.
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/
