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July 25, 2019 One more Lso-positive psyllid found in Idaho
All Crops All Locations
Potato Psyllid
Posted on: July 25, 2019 by Lucy Standley
This week we had traps deployed in 83 of the 83 fields (100%) monitored this year and we found a total of 107 psyllids across 32 (35.9%) of the 83 monitored fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (3 fields), Canyon (11 fields), Owyhee (2 fields), Elmore (4 fields), Twin Falls (9 fields), Jerome (2 fields), and Cassia (1 field).
From last week’s samples, 1 psyllid tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). This hot psyllid was collected from one field in Twin Falls County.
Given the recent incidence of Lso observed in psyllids, we strongly urge growers and crop consultants to maintain their IPM programs.
The uptick in psyllid abundance this week is not surprising given that we historically have seen an increase in captures during late July through August. Abundance of psyllids so far has been higher this year than during the last two, but still not as high as during 2016 when hundreds of psyllids were captured each week during this time.
“Heat maps” of this week’s results are included on the UI and WSU websites (see links below). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
--WSU site: https://potatoes.decisionaid.systems/idaho
Corn Earworm near Hammett, ID
Corn Treasure Valley
corn earworm
Posted on: July 25, 2019 by Jerry Neufeld
Sweet corn in the Hammett Idaho area has been found with earworm larvae. It is time to start scouting for this pest is you haven't already done so.
Corn Earworm - 2019
Corn Treasure Valley
corn earworm
Posted on: July 23, 2019 by Jerry Neufeld
I am once again collaborating with Charter Seed Co. on a project to trap corn earworm moths. Traps will be set out in corn fields at various locations near Dry Lake, Kuna, 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 28, and will reach 1300 GDD in the Parma area about July 30. This is 6-10 days later than 2018. Egg laying in most, if not all, Treasure Valley locations will take place in this time frame. Larval feeding will begin 3 to 4 days later.
Traps will go out in a couple of days. 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://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
Powdery Mildew in Sugarbeets - 2019 - Twin Falls District
Sugarbeets All Locations
Powdery Mildew
Posted on: July 23, 2019 by Jerry Neufeld
Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the Twin Falls District. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
2019 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 22, 2019 by Jeff Miller
Miller Research will be holding their annual potato pest management field day on Thursday, August 15 at the Miller Research facility located near Acequia, ID (426 E 200 N). The event is open to the public and there is no cost to attend.
Topics addressed on the tour will include:
• Susceptibility of varieties to disease with and without fungicide management.
• Fungicides for the control of early blight, brown spot, white mold, and black dot.
• Rhizoctonia management
• Fungicide programs for managing pink rot and Pythium leak
• Spore trapping for managing foliar diseases of potato
The presentations will focus on chemical management of diseases and will highlight research which has been funded by the Pacific Northwest Potato Research Consortium. ISDA pesticide recertification credits (2) and CCA Pest Management credits (2) have been awarded for this meeting.
In order to plan appropriately for lunch, please RSVP to by August 6 to Cheryn Clayton at 208-531-5124 or by email at cheryn@millerresearch.com.
» http://millerresearch.com/event/2019-miller-research-potato-pest-management-field-day/
Beet Leafminer in Gardens
Landscape and Garden Treasure Valley
Posted on: July 20, 2019 by Maria Held
Are you noticing papery areas or tunneling on you beets, Swiss Chard or spinach? The leafminer fly lays white eggs on the underside of leaves. The resulting larvae burrow inside the leaves to feed. See the links below for management options.
False Chinch Bug Migration
Landscape and Garden Treasure Valley
Nysius raphanus
Posted on: July 19, 2019 by Maria Held
The Caldwell Extension office has received multiple calls of masses of false chinch bugs. They may aggregate in large numbers on buildings or driveways especially if hosts are harvested or managed with herbicide. See the attached photo of a false chinch bug aggregation on a driveway.
Insecticides will have little, if any, effect for limiting this situation and are not recommended. False chinch bug migrations resulting in nuisance problems in buildings usually are of short duration and rarely last more than a week.
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn74153.html
» https://extension.colostate.edu/topic-areas/insects/false-chinch-bugs-5-603-2/
» https://utahpests.usu.edu/ipm/ornamental-pest-guide/arthropods/plant-lace-seed-bugs/false-chinch-bug
July 18, 2019 First Lso-positive psyllids found in Idaho
Potato All Locations
Potato Psyllid
Posted on: July 18, 2019 by Lucy Standley
This week we had traps deployed in 83 of the 83 fields (100%) monitored this year and we found a total of 59 psyllids across 29 (34.9%) of the 83 monitored fields.
Psyllids were collected on sticky traps in potato in the following counties: Payette (1 field), Canyon (11 fields), Elmore (3 fields), Twin Falls (10 fields), Jerome (3 fields), and Cassia (1 field).
From last week’s samples, 5 psyllids tested positive for Lso (liberibacter), the bacterium associated with zebra chip disease (ZC). These hot psyllids were collected from one field in Payette County and two fields in Twin Falls County. In addition, one psyllid collected from a field in Canyon County in mid-June (before our monitoring program had officially started) tested positive for Lso.
Given the incidence of Lso observed in psyllids, we strongly urge growers and crop consultants to maintain their IPM programs.
We apologize for not having “heat maps” yet this week. We hope to have them generated before next week and posted on our website.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Black Bean Aphid -2019
Sugarbeets All Locations
Black Bean Aphid
Posted on: July 17, 2019 by Jerry Neufeld
The Amalgamated Sugar Company personnel are reporting that Black Bean Aphids have been found in sugarbeet fields in the Magic Valley. Insecticides for Black Bean Aphid and Fungicides for Powdery Mildew can be tank mixed; however, TASCO has some concerns about the amount of water carrier used when these products are applied by air. TASCO asks that you contact your crop consultant if you have any application questions. Click on the link below for more information about Black Bean Aphid in the Pacific Northwest Insect Management Handbook.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-aphid
Getting Started with Cover Crops Workshop
All Crops Treasure Valley
Posted on: July 15, 2019 by Christy Tanner
If you are thinking about trying cover cropping this year, this workshop is designed to help you get started. We will cover species selection, planting, timing and termination. The course is designed for first time cover croppers, but those with more experience are welcome.
Time: 6 pm on Wednesday July 17th
Location: Malheur County Extension Office
710 SW 5th Ave Ontario, OR
Contact: 541-881-1417
christy.tanner@oregonstate.edu
Rupert Cereals Field Day - University of Idaho Cereal Extension Variety Trials
All Crops Magic Valley
Stripe rust, FHB, Take-all, Strawbreaker, Pythium, Rhizoc, Scald and any thing else you can think of
Posted on: July 12, 2019 by Juliet Marshall
JULY 16th. Rupert / Minidoka
Get the latest information on new releases of wheat and barley - both public and private varieties!
Bring your disease samples for diagnoses!
Join us for a great field day in Rupert next Tuesday morning!
Starting at Winter trials: Meridian Road north of Rupert at junction with 500 North on east side of road.
Spring trials ~700 N, 825 E
Lunch provided.
Contacts: Jason Thomas jasont@uidaho.edu 208-406-3571 or Jon Hogge (jhogge@uidaho.edu) or Juliet.Marshall@uidaho.edu
Big Week next week for University of Idaho Extension Cereal Field Days!
All Crops Eastern Idaho
Cereals
Posted on: July 12, 2019 by Juliet Marshall
Get the best, latest information on cereal production and varieties for your area.
Aberdeen Collaborative Field Day next Wednesday morning! Researchers, results, food and door prizes - please come and bring a friend!
Ashton Spring Cereals Field Day next Thursday morning!
Idaho Falls Spring Cereals Field Day next Thursday afternoon!
Earwigs Everywhere
Landscape and Garden Treasure Valley
Forficula auricularia
Posted on: July 12, 2019 by Maria Held
Garden plants commonly injured by earwigs include annual flowers (especially marigolds, dahlias and zinnias), herbs (especially basil), roses, raspberries, strawberries, apricots, peaches, sweet corn tassels and silks. Because earwigs are beneficial due to their predaceous and decomposer feeding habits, they should only be controlled when causing harm. Earwigs are nocturnal. If chewing injury to plants is apparent but no culprit can be found during the day, check the plants at night with a flashlight. If shiny, slime trails are present, snails or slugs are the culprit rather than earwigs. Trapping is an effective way to control the population.
UI Talk Tuesday session for July 16 cancelled
All Crops All Locations
General announcment
Posted on: July 11, 2019 by Kasia Duellman
The UI Ag Talk Tuesday session scheduled for July 16 at the Bonneville County Fairgrounds (Idaho Falls) has been cancelled.
The remaining sessions are still planned.
August 6 (8:00 AM):
Bannock County Extension Office
10560 Fairgrounds Rd
Pocatello
Topics:
Economics/cost of production/markets forecast (Ben Eborn)
Weeds update (Pam Hutchinson)
Other topics determined by those who attend
August 20 (8:00 am)
Minnidoka County Extension Office (McGregor Center)
85 East Baseline Rd
Rupert
Topics:
Utilizing Barn Owl Boxes to Manage Voles (Jason Thomas)
Cover crops (Steve Hines)
Aphid Monitoring, Storage disease issues (Kasia Duellman)
Weed update (Pam Hutchinson)
Other topics determined by those who attend
Psyllid monitoring program underway
Potato All Locations
Potato Psyllid
Posted on: July 11, 2019 by Lucy Standley
The 2019 University of Idaho monitoring program for potato psyllids and liberibacter (Lso), the bacterium associated with zebra chip disease (ZC), is underway. Following recommendations from our ZC Advisory Committee last year, we shortened the duration of the program. We also plan to post weekly updates by Thursday each week instead of Friday.
This week, we collected 38 psyllids from sticky cards (across 20 sites).
Psyllids were collected on sticky traps in potato in the following counties: Payette (2 fields), Canyon (7 fields), Owyhee (2 fields), Elmore (3 fields), Twin Falls (3 fields), Jerome (2 fields), and Minidoka (1 field).
We had traps deployed in 53 of the 83 fields (63.8%) monitored this year and found psyllids in 19 of the monitored fields (37.7%).
During the previous week (before the monitoring program officially began), we collected 14 psyllids across 7 of 25 fields that were monitored (psyllids were captured in Payette, Canyon, and Owyhee counties).
All psyllids tested so far have been negative for Lso. Nevertheless, we urge growers and crop consultants to maintain their IPM programs.
“Heat maps” of this week’s results will not be made given that a relatively low number of psyllids and sites (traps in several fields were just deployed this week) tends to result in skewed maps.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Onion Thrips update 7/6/2019
All Crops All Locations
Onion thrips
Posted on: July 7, 2019 by Stuart Reitz
Overall thrips pressure continues, as is typical for early July. With the warmer conditions, thrips will develop faster so numbers will rebound sooner after insecticide applications. At this time of year, most thrips are ones developing within onion crops. However, dispersal from other plants still continues. Wheat has dried down so the thrips have left it; do pay attention to when hay fields are cut as significant numbers of onion thrips can disperse out of those fields after cutting.
I found Iris yellow spot in about 20% of the fields this week. Those fields have been in Ontario, Nyssa and Fruitland. So far, it has been at low levels in most of those fields.
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.03 0.04 0.06 0.15 2.47 4.41 5.22 5.51
Vale 0.15 0.55 1.64 2.60 4.79 6.44 5.72 3.99
Ontario 0.07 0.03 0.78 0.71 1.92 4.35 5.98 5.66
Nyssa 0.02 0.07 1.32 1.03 3.67 5.20 7.33 3.98
Adrian 0.02 0.22 1.60 1.67 2.15 2.63 7.60 2.82
Fruitland 0.05 0.03 0.19 0.94 1.29 6.12 6.30 1.82
Parma - 0.09 1.60 0.67 2.75 7.89 3.47 6.54
Overall Average 0.06 0.15 1.03 1.11 2.72 5.29 5.95 4.33
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.00 0.00 0.00 0.26 5.45 12.55 9.90 10.19
Vale 0.00 0.41 6.28 4.20 11.16 5.99 11.64 17.73
Ontario 0.00 0.00 3.60 1.71 8.71 22.81 21.28 9.63
Nyssa 0.00 0.02 3.56 5.52 8.00 10.58 26.98 12.75
Adrian 0.00 0.00 8.42 3.64 5.45 1.10 5.17 8.92
Fruitland 0.00 0.00 0.16 2.20 3.39 7.62 1.55 0.46
Parma - 0.00 1.97 4.37 1.66 2.90 12.78 49.01
Overall Average 0.00 0.06 3.43 3.13 6.26 9.08 12.76 15.53
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.03 0.04 0.06 0.42 7.92 16.96 15.12 15.69
Vale 0.15 0.96 7.92 6.79 15.96 12.43 17.36 21.71
Ontario 0.07 0.03 4.38 2.42 10.63 27.16 27.26 15.29
Nyssa 0.02 0.09 4.88 6.55 11.67 15.78 34.31 16.73
Adrian 0.02 0.22 10.01 5.31 7.61 3.73 12.77 11.74
Fruitland 0.05 0.03 0.35 3.14 4.68 13.74 7.85 2.28
Parma - 0.09 3.58 5.03 4.41 10.79 16.25 55.56
Overall Average 0.06 0.21 4.45 4.24 8.98 14.37 18.70 19.86
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0% 4% 6% 14% 68% 81% 93% 86%
Vale 0% 31% 64% 54% 81% 83% 76% 89%
Ontario 0% 3% 34% 35% 73% 89% 96% 75%
Nyssa 0% 5% 73% 56% 70% 87% 97% 71%
Adrian 0% 19% 57% 53% 70% 86% 98% 87%
Fruitland 0% 3% 17% 50% 54% 94% 100% 65%
Parma 0% 7% 54% 41% 89% 84% 74% 90%
Overall Average 0% 10% 43% 43% 72% 86% 91% 80%
IYSV Incidence (% plants with lesions)
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29 7/6
Oregon Slope/Weiser 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Vale 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Ontario 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.9% 1.0%
Nyssa 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1% 0.2%
Adrian 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Fruitland 0.0% 0.0% 0.0% 0.0% 0.0% 0.2% 9.4% 6.1%
Parma 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Overall Average 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 1.5% 1.0%
* the decrease in Fruitland is a sampling artefact – this week includes fields not sampled last week because of spraying
Malheur Experiment Station Field Day July 10, 2019
All Crops Treasure Valley
Posted on: July 2, 2019 by Janet Jones
You are invited to the Malheur Experiment Station Summer Farm Festival and Annual Field Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
Date: Wednesday, July 10, 2019
Registration starts at 8:00 am with coffee and donuts
Click on the PDF below for the tour descriptions and schedule.
A complimentary lunch will be served at noon.
For more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
July 17 Aberdeen Collaborative Field Day
Small Grains All Locations
Cereal Field Days - Update on varieties, diseases (stripe rust, foot rots, frost damage, etc)
Posted on: July 2, 2019 by Juliet Marshall
Wednesday, July 17 | 8:30 a.m.
FREE and open to the public - Please share this invitation!
Aberdeen Research Station | 1693 2700 West Rd, Aberdeen, ID 83210
Google Map
See the latest in advanced grain genetics
Tour of current and new public and private winter wheat and barley varieties for southern Idaho
Q&A with experts from the University of Idaho, The Andersons and Limagrain Cereal Seeds
Eat, drink and be merry
Hot coffee and donuts to greet you
Catered lunch with good company
Wheat and barley food products to sample
Collaborative local craft brew with Mountain Malt and Portneuf Valley Brewing
Reserve your spot by Monday, July 8
University of Idaho | jmarshall@uidaho.edu
Limagrain Cereal Seeds | hannah.kammeyer@limagrain.com
Onion Thrips update 6/28/2019
Onion Treasure Valley
Onion thrips
Posted on: June 30, 2019 by Stuart Reitz
Below are the results from this past week’s thrips monitoring program. Thrips pressure continues to be strong – as there were increases in adults and immatures in most areas. Please keep in mind that numbers vary from field to field.
This week, we found Iris yellow spot virus in fields in Ontario, Nyssa and Fruitland, with the highest levels around 10% in a couple of fields. Infected plants have been more abundant closer to the edges of fields, which suggests that most transmission at this time is from adults dispersing into fields. That would change later in the season if immature thrips survive on infected plants and then transmit virus to other plants within a field.
As the onions’ canopy develops and leaves start folding over one another, be sure to use sufficient spray volumes and pressure to get insecticides down in the neck of plants. This week some I saw some recently sprayed fields that had dead thrips several inches up on the leaves but still had live ones in the neck at the base of leaves.
The Malheur Experiment Station Annual Farm Fest will be July 10, beginning at 8 AM with drone demonstrations followed by research tours and kids’ activities. ODA Director Alexis Taylor will be our special guest speaker at lunch. She will be there with other ODA representatives, including Susanna Pearlstein, ODA’s Produce Safety Program Manager, and Casey Prentiss. Please call 541-889-2174 to RSVP.
Figure 1. IYSV on leaves 2019-06-28
Adults per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29
Oregon Slope/Weiser 0.03 0.04 0.06 0.15 2.47 4.41 5.22
Vale 0.15 0.55 1.64 2.60 4.79 6.44 5.72
Ontario 0.07 0.03 0.78 0.71 1.92 4.35 5.98
Nyssa 0.02 0.07 1.32 1.03 3.67 5.20 7.33
Adrian 0.02 0.22 1.60 1.67 2.15 2.63 7.60
Fruitland 0.05 0.03 0.19 0.94 1.29 6.12 6.30
Parma - 0.09 1.60 0.67 2.75 7.89 3.47
Overall Average 0.06 0.15 1.03 1.11 2.72 5.29 5.95
Immatures per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29
Oregon Slope/Weiser 0.00 0.00 0.00 0.26 5.45 12.55 9.90
Vale 0.00 0.41 6.28 4.20 11.16 5.99 11.64
Ontario 0.00 0.00 3.60 1.71 8.71 22.81 21.28
Nyssa 0.00 0.02 3.56 5.52 8.00 10.58 26.98
Adrian 0.00 0.00 8.42 3.64 5.45 1.10 5.17
Fruitland 0.00 0.00 0.16 2.20 3.39 7.62 1.55
Parma - 0.00 1.97 4.37 1.66 2.90 12.78
Overall Average 0.00 0.06 3.43 3.13 6.26 9.08 12.76
Total average per Plant
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29
Oregon Slope/Weiser 0.03 0.04 0.06 0.42 7.92 16.96 15.12
Vale 0.15 0.96 7.92 6.79 15.96 12.43 17.36
Ontario 0.07 0.03 4.38 2.42 10.63 27.16 27.26
Nyssa 0.02 0.09 4.88 6.55 11.67 15.78 34.31
Adrian 0.02 0.22 10.01 5.31 7.61 3.73 12.77
Fruitland 0.05 0.03 0.35 3.14 4.68 13.74 7.85
Parma - 0.09 3.58 5.03 4.41 10.79 16.25
Overall Average 0.06 0.21 4.45 4.24 8.98 14.37 18.70
% Plants with Thrips
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29
Oregon Slope/Weiser 0% 4% 6% 14% 68% 81% 93%
Vale 0% 31% 64% 54% 81% 83% 76%
Ontario 0% 3% 34% 35% 73% 89% 96%
Nyssa 0% 5% 73% 56% 70% 87% 97%
Adrian 0% 19% 57% 53% 70% 86% 98%
Fruitland 0% 3% 17% 50% 54% 94% 100%
Parma 0% 7% 54% 41% 89% 84% 74%
Overall Average 0% 10% 43% 43% 72% 86% 91%
IYSV Incidence (% plants with lesions)
Growing Area 5/15 5/25 5/31 6/8 6/15 6/22 6/29
Oregon Slope/Weiser 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Vale 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Ontario 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.9%
Nyssa 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.1%
Adrian 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Fruitland 0.0% 0.0% 0.0% 0.0% 0.0% 0.2% 9.4%
Parma 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Overall Average 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 1.5%
2019 Potato psyllid monitoring program in Idaho
Potato All Locations
potato psyllid
Posted on: June 28, 2019 by Erik Wenninger
The University of Idaho, in collaboration with crop consultants across the state, will continue our monitoring program for potato psyllids, zebra chip disease, and liberibacter (Lso), the bacterium associated with zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and is funded in part by the Idaho Potato Commission, USDA, and generous in-kind contributions by our collaborators.
Following recommendations from our ZC Advisory Committee last year, we are shortening the duration of the program. We still plan to monitor about 100 fields across the state, but only with 4 sticky traps per field rather than the more intense sampling that was conducted on some fields in the past.
The first official deployment of sticky traps for the program will occur next week. However, following earlier than usual observation of potato psyllids in Oregon, we began deploying traps on a limited basis over the last three weeks. During the week of June 10, we captured 22 potato psyllids across six fields in Canyon County and one psyllid in a field in Payette County. During the week of June 17, we captured one psyllid in each of two fields in Canyon County and three psyllids across two fields in Payette County. We have yet to observe potato psyllids in Twin Falls County after three weeks of monitoring in a few fields. Over the last two weeks, we found psyllids in 8 of 12 fields (67%) and 4 of 23 fields (17%) being monitored, respectively.
It should be noted that observation of potato psyllids in Idaho during June is not at all unexpected. We typically would find our first psyllids during mid-May.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
» http://www.uidaho.edu/cals/potatoes/news/psyllid-management
Marketing Class available for East Idaho Growers
All Crops Eastern Idaho
Posted on: June 28, 2019 by Juliet Marshall
The University of Idaho Extension and Lee Andersen from Ririe Grain is offering a workshop for anyone wanting to learn the basics of the futures market and utilizing it in your grain marketing. Topics will include:
Basics of the Futures Market
Hedging Strategies
Using Options
Charting Techniques
Order Types
Location & Time:
Rigby Courthouse Annex Building Upstairs Meeting Room
210 Courthouse Way – July 2nd
Classes are from 1:00 to 4:00 p.m.
Cost: Free
For Questions Call: or Email Madison County Extension Office (208) 716-5602, Jon Hogge jhogge@uidaho.edu
Cercospora leaf spot in Sugarbeets - 2019
Sugarbeets All Locations
Cercospora leaf spot
Posted on: June 28, 2019 by Jerry Neufeld
Cercospora leaf spot has been found by The Amalgamated Sugar Company in fields near eastern Oregon, Treasure Valley, western Magic Valley. Incidence is low and likely does not warrant treatment yet. However, when inoculum is present, infection will progress with warmer temperatures and increased irrigation and relative humidity. There are several fungicides available for use to treat Cercospora leaf spot, but be aware of multiple fungicide resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days.
Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your area, to report a loss of fungicide efficacy, or if you have any questions.
Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
Powdery Mildew in Sugarbeets - 2019
Sugarbeets All Locations
Powdery Mildew
Posted on: June 27, 2019 by Jerry Neufeld
Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in fields near Adrian, Oregon and western Idaho. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.
Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
UI Ag Talk Tuesday July 2 at 8:00 AM at the Idaho AgCredit Rexburg branch
All Crops All Locations
Posted on: June 27, 2019 by Kasia Duellman
Reminder: The next UI Ag Talk Tuesday will be hosted in Rexburg July 2 at the Idaho AgCredit Rexburg branch, 1586 N. 2nd E., at 8:00 AM.
Join UI Researchers, Extension Personnel, and ag professionals to learn about timely topics in ag production. For this next session on July 2, Jon Hogge will update us on the latest thrips investigations and cereal diseases. Other topics may include potato diseases, weed issues, and other crop challenges currently being faced.
These events are offered on the first and third Tuesdays at 8AM throughout the growing season at different locations in eastern Idaho. Breakfast beverages (coffee, juice) and light breakfast fare (e.g., pastries/donuts/fruits) will be provided. Venue and location differs, so look for the announcements via Treasure Valley Pest Alerts and on the UI Extension Calendar.
» https://webpages.uidaho.edu/extension-seed-potato/ATT.html
Squash Bugs are here!
Landscape and Garden Treasure Valley - Idaho
Anasa tristis
Posted on: June 27, 2019 by Maria Held
Squash bugs and eggs have been found yesterday at the IPM scouting walk at Idaho Veterans Garden in Caldwell. The insects affect cucurbits and vine crops sucking sap from the plants. Check the underside of leaves for egg masses and destroy them. The adults are hard to control. Always follow label instructions.
