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Tobacco Budworm in Roses, Petunias, Geraniums.
Landscape and Garden All Locations
Tobacco/ Geranium budworm (Helicoverpa virescens)
Posted on: July 21, 2016 by Rich Guggenheim
The Tobacco budworm (Heliothis virescens) causes damage to roses, petunias, geraniums, and the flower buds of other ornamental garden plants. Control methods include scouting and hand picking at dusk, roto-tilling, and planting less susceptible plant material.
On geraniums, insecticidal control is difficult because caterpillars are protected from applications inside the flowerbuds and stems. Consider planting ivy geraniums instead of standard geraniums.
On petunias pyrethrin insecticides can provide good control. Look for products containing the active ingredients permethrin, cyfluthrin, or bifenthrin. Always read and follow all label direction.
» http://extension.colostate.edu/topic-areas/insects/tobacco-geranium-budworm-5-581/
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/budworm.htm
Annual Fruit Field Day in Parma! Mark your calendars!
Landscape and Garden All Locations
Posted on: July 18, 2016 by Dian Roberson
The University of Idaho Annual Fruit Field Day will be held on Friday September 16; 2016, 8:30 am to 1:00 pm at the U of I Parma Research and Extension Center Pomology Orchard and Vineyard site, about 4 miles north of Parma, Idaho. The registration will start at 8:30 am and program will start at 9:00 am (sharp). Several cultivars of new table grapes, peaches, nectarines, apples, plums, quince, Asian pears, and other alternative fruits will be presented during the tour. See the attached document below!
July 15, 2016 – First Lso-positive psyllid found in Magic Valley this year
Potato All Locations
potato psyllids
Posted on: July 15, 2016 by Amy Carroll
One potato psyllid collected last week on a sticky card from a potato field in Jerome County tested positive for Lso (liberibacter), the bacterium that causes zebra chip. All other psyllids collected last week tested negative for Lso.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (3 fields), Canyon (11 fields), Ada (2 fields), Elmore (1 field), Twin Falls (4 fields), Jerome (1 field), and Gooding (1 field). This is the first potato psyllid captured in Gooding County this year.
We collected 100 psyllids this week from sticky cards (69 from Light sites and 30 from Intense sites). One potato psyllid was collected in a vacuum sample on an Intense site in Twin Falls County. Of the total 100 psyllids captured this week, 92 came from the Treasure Valley.
We had traps deployed in 105 of the 107 fields (98%) that will be monitored this year. We found psyllids in 27 of the 105 fields (26%) that were looked at this week.
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Curly Top Virus in Tomatoes
Landscape and Garden All Locations
Curly top Virus
Posted on: July 15, 2016 by Rich Guggenheim
Curly top virus has been spotted in tomatoes.
Visual symptoms of tomatoes infected with Curly top virus are leafs curl up and turn yellow wth purple along the veins.
Curly top virus is transmitted by the beet leafhopper. There are no effective chemical controls. Use row covers to protect tomato plants from leafhoppers.
» http://extension.colostate.edu/docs/pubs/garden/02949.pdf
» http://extension.usu.edu/files/publications/factsheet/curly-top-tomato08.pdf
» http://entoweb.okstate.edu/ddd/diseases/curlytop.htm
» http://cals.arizona.edu/yavapai/anr/hort/byg/archive/curlytopvirus2013.html
Corn Earworm 2016
Corn Treasure Valley
corn earworm
Posted on: July 11, 2016 by Jerry Neufeld
I am once again collaborating with Charter Seed Co. and Crookham 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, Wilder, Homedale, and Caldwell. I will check the traps every few days and post the moth counts to this website.
There are a couple of models that can be used to predict the emergence of the summer generation of corn earworm moths. This is the generation of moths that lay eggs in corn that is silking at the time of their emergence.
One model uses January 1 as a biofix, 55 and 92 as the temperature parameters and predicts the summer moths will appear after 1300 growing degree days (GDD). 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 Parma area on 7/23 and 1300 GDD in the Caldwell area on 7/23. Egg laying in most, if not all, Treasure Valley locations will take place about this same time. This is about 9 days later than 2015.
The second model simply uses 8/1 as the default date that the summer moths will emerge and begin laying eggs in fresh corn silk. I do not think this model will be of value this year.
Traps will go out early next week. 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 view the growing degree day model and also view various treatment methods based on the type of corn that you are growing.
» http://insect.pnwhandbooks.org/vegetable-seed/corn/corn-seed-corn-earworm-sweet-corn-only
» http://insect.pnwhandbooks.org/vegetable/vegetable-pests/hosts-and-pests/corn-sweet-corn-earworm
» http://insect.pnwhandbooks.org/agronomic/field-and-silage-corn/field-and-silage-corn-corn-earworm
July 8, 2016 – Increasing psyllid numbers in Treasure Valley
Potato All Locations
potato psyllids
Posted on: July 8, 2016 by Amy Carroll
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Canyon (12 fields), Ada (2 fields), Elmore (1 field), Twin Falls (1 field), Jerome (1 field), and Power (1 field). We collected 99 psyllids this week from sticky cards (67 from Light sites and 32 from Intense sites).
Of the total 99 psyllids captured this week, 96 came from the Treasure Valley. Two of these psyllids were from vacuum samples taken from an Intense site in Canyon County.
We had traps deployed in 100 of the estimated 107 fields (93%) that will be monitored this year, although we are still waiting for cards from 10 sites to be delivered and processed. We found psyllids in 22 of the 90 fields (24%) that were looked at this week.
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
UI Cereals Field Days and Extension Variety Trials
Small Grains All Locations
Cereal Insects and Pathology, Cereals Breeding, Cereal Agronomy
Posted on: July 7, 2016 by Juliet Marshall
Come join our Cereals Field Days to learn about new cereal varieties and pests!
July 12th at Idaho Falls starting at 4 PM.
UI and Bonneville County Grain Growers
Meet at Marc Thiels
West side of road just north of W 17th South
2550 S 45th W
Idaho Falls, ID
July 13th at Aberdeen R&E Center, starting at 8:30 AM
1693 S 2700 W
Aberdeen, ID 83210
Powdery Mildew in Sugarbeets 2016
Sugarbeets All Locations
powdery mildew
Posted on: July 7, 2016 by Jerry Neufeld
Powdery mildew has been found by Amalgamated Sugar Company Crop Consultants in the Adrian, Oregon area. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure, applications with different chemistries should be repeated every 14 to 21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.
Click on the links below for the powdery mildew page in the PNW Plant Disease handbook.
» http://pnwhandbooks.org/plantdisease/sugar-beet-beta-vulgaris-powdery-mildew
Black Bean Aphid in Sugarbeets 2016
All Crops All Locations
Black Bean Aphid
Posted on: July 7, 2016 by Jerry Neufeld
Amalgamated Sugar Company Field Staff are reporting the Black bean aphids have been found in the Dry Lake Area of Canyon County. In 2015, UI Extension Entomologist Dr. Erik Wenninger posted this information about black bean aphids. The black bean aphid is a dark-bodied aphid, about 1/16 inch long; individuals may be winged or wingless. Aphids may be found on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field. Colonies can produce massive amounts of honeydew, which causes a black, sooty mold to cover the leaves.
There are no formal economic thresholds for insecticide treatment decisions for bean aphids, but treatment should be considered if fields are under heavy pressure. When scouting a field, it is important to sample plants in several representative areas across a field, because infestations may be patchy. Also, several predators (notably, lady beetles) and parasites attack bean aphids and may effectively suppress aphid populations. Therefore, it is advisable to assess natural enemy populations when making a decision on whether to apply insecticides. In addition to sugar beets, black bean aphids may be found in other crops, including beans and corn.
You may be able to tank mix insecticides for black bean aphid with fungicides used for powdery mildew. Make sure to read and follow the label and contact your Field Consultant from AMSCO for more treatment options.
For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook by clicking on the link below.
» http://insect.pnwhandbooks.org/agronomic/sugar-beet/sugar-beet-aphid
White Grub control methods need to be applied now.
Landscape and Garden All Locations
Lawn Grubs
Posted on: July 5, 2016 by Rich Guggenheim
July and August is the time to apply control methods for white grubs and June beetles.
One way to control them is to simply grow a vigorous lawn. Healthier plants have fewer pests and are more tolerant of infestations. Aerate lawns in the spring and fall, and apply fertilizer in the fall. Proper irrigation and mowing at a height of 3.5 to 4 inches will help establish and maintain a vigorous lawn.
Other options include insecticides such as imidacloprid.
Organic methods include Heterorhabditis spp. nematodes and or Steinernema carpocapsae nematodes.
Proper timing of insecticides is critical for effective control of lawn grubs.
» http://extension.colostate.edu/topic-areas/insects/billbugs-and-white-grubs-5-516/
» http://ipm.ucanr.edu/TOOLS/TURF/PESTS/inbill.html
» http://utahpests.usu.edu/htm/utah-pests-news/utah-pests-news-fall-2014/billbug-management/
2016 Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: July 5, 2016 by Jeff Miller
The 2016 Miller Research Potato Pest Management Field Day will be held Wednesday, August 17 from 9:00-10:30 am. Please see the attached page for details.
New article on late blight and potato psyllid management
Potato All Locations
Late blight
Posted on: July 5, 2016 by Jeff Miller
Early season weather and the presence of late blight in 2015 has made the risk of late blight high for 2016. The attached article discusses some considerations for late blight management and also discusses some cautions when simultaneously treating for potato psyllids.
Summer Farm Festival at the Malheur Experiment Station
All Crops All Locations
Posted on: July 5, 2016 by Bill Buhrig
Everybody is invited to come an check out the annual Farm Festival and Field Day on July 13 at the Malheur Experiment Station just outside Ontario. There is a wide variety of tours and speakers that will provide something of interest for all. There will even be activities for youth and lunch at noon. Check out the attachment for more information. It will be a good time!
First psyllids found in Power and Bingham counties
Potato All Locations
potato psyllids
Posted on: July 1, 2016 by Erik Wenninger
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Owyhee (2 fields), Canyon (12 fields), Ada (1 field), Elmore (1 field), Twin Falls (2 fields), Bingham (1 field), and Power (1 field). These are the first psyllid captures this year in Power and Bingham counties. We collected 48 psyllids this week from sticky cards (34 from Light sites and 14 from Intense sites).
We had traps deployed in 97 of the estimated 107 fields (91%) that will be monitored this year and found psyllids in 24 of the 97 fields (25%).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
VACANT POSITION - Agricultural Technician at University of Idaho, PARMA
All Crops All Locations
Posted on: June 30, 2016 by Olga Walsh
VACANT POSITION - Agricultural Technician at University of Idaho, PARMA RESEARCH & EXTENSION CENTER - QUALIFIED CANDIDATES ENCOURAGED TO APPLY HERE:
https://uidaho.peopleadmin.com/postings/14563
The Agricultural Technician will provide technical support to the PI and to the Research Technician as part of the cropping systems agronomy research and extension program by assisting in field and greenhouse experiments focused on plant nutrition, fertilizer and water use efficiency.
VACANT POSITION - Research Technician at University of Idaho, Parma ID
All Crops All Locations
Posted on: June 28, 2016 by Olga Walsh
VACANT POSITION - Research Technician at University of Idaho, PARMA RESEARCH & EXTENSION CENTER - QUALIFIED CANDIDATES ENCOURAGED TO APPLY HERE:
http://uidaho.peopleadmin.com/postings/14422.
The Research Technician will provide assistance to the PI as part of the cropping systems agronomy research and extension program, and will conduct field, greenhouse, and laboratory experiments focused on plant nutrition, fertilizer and water use efficiency.
Spider Mites!
Landscape and Garden All Locations
spider mite
Posted on: June 27, 2016 by Dian Roberson
With the hot dry weather in the forcast, be on the look out for spider mite damage. They attack evergreens, deciduous trees, and many other ornamental plants. They even like your veggies occasionally. You will probably not see the insect as they are as small as tiny specs of dust. They damage plants by rasping the cell surface so look for stippling or browning of needles. If you shake the plant over a white piece of paper and look closely you may see them moving around.
» http://insect.pnwhandbooks.org/hort/landscape/common/landscape-pests-spider-mite
» http://insect.pnwhandbooks.org/hort/landscape/common/landscape-pests-spider-mite
» http://extension.colostate.edu/topic-areas/insects/spider-mites-5-507/
June 24, 2016 – First potato psyllid found in Minidoka County
Potato All Locations
potato psyllid
Posted on: June 24, 2016 by Amy Carroll
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (2 fields), Owyhee (1 field), Canyon (10 fields), Ada (1 field), Jerome (1 field), Twin Falls (1 field), and Minidoka (1 field). This is the first psyllid captures this year in Minidoka County. We collected 35 psyllids this week from sticky cards (23 from Light sites and 12 from Intense sites).
We had traps deployed in 94 of the estimated 107 fields (88%) that will be monitored this year and found psyllids in 18 of the 94 fields (19%).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
Aphids on Cole crops
Landscape and Garden All Locations
Aphid on Garden Crops
Posted on: June 24, 2016 by Rich Guggenheim
Aphids have been observed on numerous cole and other garden and ornamental crops in the Treasure Valley. Look for sticky residue and curled, distorted leaves. As fields of alfalfa and wheat are cut in the next few weeks, aphids and other insects can move from fresh cut fields into home gardens. Options for control include streams of water to dislodge the insect. See the attached for further information on aphid control.
» https://www.youtube.com/watch?v=jTZurTQzMus&feature=youtu.be
» http://ipm.ucanr.edu/PMG/PESTNOTES/pn7404.html
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/aphids.htm
Squash Bug Alert
Landscape and Garden All Locations
Squash Bug
Posted on: June 24, 2016 by Rich Guggenheim
Squash Bugs have been observed in home garden locations throughout the Treasure Valley. Control method options are attached.
» https://www.youtube.com/watch?v=SFMDcGDQOTY
» http://extension.usu.edu/files/publications/factsheet/ENT-120-08.pdf
» http://www.colostate.edu/Dept/CoopExt/4dmg/Pests/sqshbug.htm
More psyllids found in Treasure and Magic Valleys
Potato All Locations
potato psyllids
Posted on: June 17, 2016 by Erik Wenninger
All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.
Potato psyllids were collected this week on sticky traps in potato in the following counties: Malheur (OR) (1 field), Payette (3 fields), Canyon (10 fields), Ada (1 field), Gooding (1 field), and Jerome (1 field). These are the first psyllid captures this year in Gooding and Jerome counties. We collected 42 psyllids this week from sticky cards (33 from Light sites and 9 from Intense sites).
We had traps deployed in 88 of the estimated 107 fields (82%) that will be monitored this year and found psyllids in 17 of the 80 fields for which we have had cards returned thus far (21%; we are still waiting to receive cards from 8 fields).
As always, we urge growers and crop consultants to have an IPM program in place. More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the links below.
http://www.uidaho.edu/extension/news/psyllid-management
Detailed results from the “Light” sites can be found here:
https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
Detailed results from the “Intense” sites can be found here:
https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
» http://www.uidaho.edu/extension/news/psyllid-management
» https://docs.google.com/spreadsheets/d/1EruNcKgfqJ0RUpleaHBpODfwBZIqDyT4l-9MPKZBYcY/edit#gid=0
» https://docs.google.com/spreadsheets/d/1Uk6GBxEgZeGWWhT84wymaWfHRs2it_Eg02eWPFLgWsI/edit#gid=0
UI Parma + OSU Malheur Co FIELD DAY
All Crops All Locations
Posted on: June 17, 2016 by Olga Walsh and Bill Buhrig
2016 Cropping Systems
Field Day
Oregon State University University of Idaho
Location: Parma Research & Extension Center
29603 U of I Lane Parma, ID 83660
Date/time: June 20, 2016 8:30 am noon to 1 pm
8:30 – 8:55 Registration, Modular Building
Travel to D3
9:00 – 9:15 Drip irrigation in potatoes Galen Mooso, J.R. Simplot Company
Travel to C1
9:25 – 9:35 Corn nitrogen fertilizer guidelines Olga Walsh, UI
C1
9:35: 10:05 UAV (drone) demo Craig Thompson, Kristin Swoboda, Take Flight UAS, LLC
Travel to M7
10:10 – 10:25 Spring wheat: nitrogen and water, micronutrients Olga Walsh, UI
Travel to M2
10:35 – 10:50 Winter wheat seed treatments Olga Walsh, UI
M2
10:50 – 11:10 Winter cereals nursery Mike Flowers, OSU
Travel to E1
11:20 – 11:35 Winter wheat nitrogen and phosphorus Olga Walsh, UI
E1
11:35 – 11:55 Spring cereals nursery Jianli Chen, Olga Walsh, UI
E1
11:50 - 12:00 Crop disease update James Woodhall, UI
Travel to Modular Building
12:00 – 1:00 Lunch, indoor presentation, prize draw
Contact information:
IDAHO: Olga Walsh, Cropping Systems Agronomist, Southwest Idaho Research & Extension Center, 29603 U of I Lane, Parma, ID 83660, (208)722-6701, ext. 218.; owalsh@uidaho.edu; Twitter: @IDCrops, Web: ID Crops & Soils
OREGON: William Buhrig, Crop Agent, OSU Malheur County Extension, 710 SW 5th Ave, Ontario, OR 97914, william.buhrig@oregonstate.edu; O: 541-881-1417 x 106
» http://idcrops.blogspot.com/2016/06/cropping-systems-agronomy-field-day-ui.html
New University of Idaho Extension Publication - Planting Dates for Wheat
All Crops All Locations
Posted on: June 17, 2016 by Olga Walsh and Bradford Brown
Appropriate planting dates help to maximize grain yields and quality. Planting date can influence susceptibility to insect pests, diseases, drought, lodging, and inclement harvest conditions. It can affect variety performance and selection, water management, and other aspects of wheat management.
The focus of this publication will be on planting dates for southwestern (SW) Idaho although much of the information will be pertinent to other areas. Planting dates have been a research focus in SW Idaho for three decades, in part because the cropping system is diverse and the planting date window is so long. Research has dealt primarily with the effects of late plantings.
http://www.cals.uidaho.edu/edComm/pdf/BUL/BUL906.pdf
Cereal Field Days in southern Idaho from the University of Idaho
All Crops All Locations
Posted on: June 16, 2016 by Juliet Marshall
There will be several field days hosted by the University of Idaho in the upcoming weeks. Information on varieties, diseases, insects and cropping systems will be available with several of our Cereals faculty available for discussion. We hope to see you there!
Stripe rust in wheat and barley q
All Crops All Locations
stripe rust
Posted on: June 16, 2016 by Juliet Marshall
Susceptible varieties of spring wheat are showing high levels of infection from stripe rust if they are not protected by fungicides. High levels are showing in Klasic, for example, from the Aberdeen area through Idaho Falls.
Some formerly resistant varieties are showing low levels of stripe rust as well. There is heavy disease pressure in southeast Idaho. As spring wheat is starting to head, please be aware that strobilurin fungicides should not be used to control stripe rust due to the potential for increased DON levels from Fusarium head blight. Choose a fungicide that will be effective for both stripe rust control and FHB suppression and if possible, target application window for FHB suppression especially for hard white spring wheat.
Read and follow all label directions.
Stripe rust is also being found in winter and spring barley. We are not recommending fungicide applications for stripe rust in barley at this time, but similar to wheat, fungicide applications to suppress FHB will also protect against stripe rust infection. In general, six row barleys are more susceptible than two row barleys.
