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Caribou County Field Day
Small Grains Eastern Idaho
all pests, dryland grain
Posted on: July 9, 2013 by Juliet Marshall
Please join the Caribou County Grain Growers and University of Idaho for a Grain Field Day and Dinner.
3:00 PM
July 18, 2013 - Wednesday, starting at the Spring Trials
(Spring Trial Directions: From stop light at Chevron station go north on Government Dam Road to stop sign about 2 miles north. Turn left and go about 1 1/2 miles north of Hooper Springs to crossroad of truck crossing. Turn left and go 1/4 mile to driveway of Sid Cellans house and turn in driveway. Spring Plots are in field in front of Sids house.
Winter Trials (Winter trials are further north on Government Dam Road 4 or 5 miles to 10 mile pass road. Turn left on 10 mile pass road and go about 2 miles west. Look for plots on north side of road or the left. They are marked with flags.)
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 8, 2013 by Erik Wenninger
More potato psyllids have been found in the U-Idaho monitoring programs. Psyllids have been found thus far in Canyon, Ada, Elmore, Gooding, Jerome, and Twin Falls Counties. So far no psyllids tested to date have been positive for the bacterium that causes ZC. For detailed monitoring results, you can always use the links provided at:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Organic Farm Tours Offered in July
All Crops All Locations
Posted on: July 8, 2013 by Nora Olsen
Organic Farm Tours Offered in July
The Northwest Center for Alternatives to Pesticides invites produce growers and those interested in organic production to attend two farm tours in July.
The tours will focus on produce production, organic pest and weed management, wash facilities, and packing sheds at two organic farms in southern Idaho.
•Wednesday, July 17 – Purple Sage Farms, Middleton, ID
Tim and Mike Sommer of Purple Sage Farms focus on greenhouse production of herbs, greens and specialty produce.
•Wednesday, July 31 – Wood River Organics, Bellevue, ID
Judd McMahan of Wood River Organics grows a variety of lettuce and salad greens, as well as carrots, beets, tomatoes and cucumbers.
The tours are a follow-up to the Northwest Center for Alternatives to Pesticides’ winter workshop “Direct Marketing & WholeSale Success: Post-harvest Handling & Food Safety for Fresh Produce Growers.” Participating farms will receive a complimentary 312-page color manual, Wholesale Success: A Farmers Guide to Food Safety, Postharvest Handling, Packing and Selling Produce, produced by FamilyFarmed.org, which is valued at $70.
Each tour will run from 8:30 am to 12 pm and will conclude with lunch. The cost is $15 and pre-registration is required. Register online at www.pesticide.org or contact Jen Miller (jmiller@pesticide.org or 208-850-6504) by July 12 and July 26, respectively. More details at www.pesticide.org.
These tours are made possible by a grant from USDA Risk Management Agency and support from the following businesses: Brandtastic Soil, Café Mam, Clear Springs Foods, Organic Valley, We Rent Goats and Western Ag Research. This is an equal opportunity event.
Idaho Falls Irrigated Cereals Field Day
Small Grains Eastern Idaho
Various and too many?
Posted on: July 1, 2013 by Juliet Marshall
16 Jul Idaho Falls: UI Cereals Extension Field Day with Bonneville County Grain Growers
WHERE: Idaho Falls, Thiel brothers’ on New Sweden Hwy, 2550 S 45th West
WHEN: Tour starts at 4:00 p.m. Dinner provided. Steak fry at Sealander Park: 6510 So. 65th W. around 6:00 pm.
CONTACTS: Juliet Marshall, (208-390-4859), juliet.marshall@uidaho.edu; Wayne Jones, (208-529-1390), wjones@uidaho.edu; Matt Gellings, (208-206-0126), mjgellings@msn.com; Mark Mulberry, (208) 524-5218, mmulberry56@gmail.com
Elm Seed Bug
Announcements Treasure Valley
Elm Seed Bug
Posted on: July 1, 2013 by Jerry Neufeld
The Elm Seed Bug is out in force in the Treasure Valley and The Idaho State Department of Agriculture has been overwhelmed with phone calls from the public. The fact sheet below tells about all there is to know and do concerning this pest.
update on UI potato psyllid monitoring
Potato All Locations
potato psyllids & zebra chip
Posted on: June 30, 2013 by Erik Wenninger
--Results to date of sticky card captures from the ca. 90 fields being monitored with 4 yellow sticky cards can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
--More potato psyllids have been found in Canyon and Elmore Counties, and 1 potato psyllid was found in Jerome County. All psyllids tested so far from previous weeks have been negative for Lso, the bacterium that causes zebra chip.
--Results to date of sampling from the 13 fields being monitored with yellow sticky cards, vacuum samples, and leaf samples can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdFRNeW5ReDI2bTNWM0FwYmsxSnB1aGc#gid=0
--More potato psyllids have been found in Canyon County, and 1 potato psyllid was found in Twin Falls County. All psyllids tested so far from the previous week have been negative for Lso, the bacterium that causes zebra chip.
--Any scouting programs underway for potato psyllids should be intensified, and IPM programs should be in place. Refer to the following site for guidance on scouting and IPM programs for potato psyllids: http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
powdery mildew in sugarbeets
All Crops Treasure Valley
powdery mildew in sugarbeets
Posted on: June 28, 2013 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Crop Consultants and University of Idaho Extension Pathologist Dr. Oliver Neher in sugarbeet fields in the western Treasure Valley of Idaho and Oregon. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Depending on the disease pressure, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.
spider mites in sugarbeets
Sugarbeets Treasure Valley
spider mites
Posted on: June 28, 2013 by Jerry Neufeld
Spider mites were a major issue in sugarbeets in 2012. This alert is to let you know that now is the time to be on the watch for them. If you are getting ready to apply fungicide for mildew, you might want to also scout for mites and treat them both at the same time if necessary. Always check with your Amalgamated Sugar Company Crop consultant if you have any questions.
spotted wing drosophilla
Tree Fruits Treasure Valley
spotted wing drosophilla
Posted on: June 28, 2013 by Jerry Neufeld
The following information about Spotted Wing Drosophila was provided by Dr. Jim Barbour, IPM Specialist at the University of Idaho SW Idaho Research and Extension Center in Parma, Idaho.
Spotted Wing Drosophila Found in Southwest Idaho
Spotted wing drosophila (SWD), Drosophila suzukii, is an invasive insect pest of economically valuable small fruit and tree fruit crops. The spotted wing drosophila was first identified in the Western United States in late 2008. Since July 2009, it has been found in Florida, Oregon and Washington and now appears to be established in many Pacific Northwest fruit crops. Spotted wing drosophila was confirmed in samples from Nez Pierce, Latah and Canyon Cos., ID in August of 2012. In June of 2013, two adult spotted wing drosophila, a male and a female, were found in in an orchard south of Fruitland, Idaho being monitored for spotted wing drosophila by crop consultant Jennifer Riebe. Spotted wing drosophila is a temperate vinegar or pomace fly native to Southeast Asia preferring temperatures of 20-30 °C (68-86 °F). The presence of the flies in samples this early in the season indicates the flies may have overwintered in southwest Idaho.
Spotted wing drosophila differs from the common drosophila species such as Drosophila melanogaster that occur in Pacific Northwest fruit crops in that it can attack undamaged fruit still on the tree; the common species will only attack damaged, overripe, or dropped fruit. Spotted wing drosophila have the potential to be a very serious pest of tree and small fruits. Commercial fruit producers and home gardeners should monitor their crops for presence of SWD. Please see the attached information on identification, biology, monitoring and management of spotted wing drosophila. Because of the relatively recent nature of this introduction, the provided information is subject to change as we learn more about the biology of this pest.
PLEASE REPORT SUSPECT SWD INFESTATIONS:
Preserve specimens in alcohol (rubbing alcohol is fine) and send to:
Idaho State Department of Agriculture, Plant Industries Division, P.O. Box 790 Boise, ID 83701. Please include your name, address and phone number or you may call (208) 332-8620 to report the possible find.
Or:
Jim Barbour, University of Idaho, Parma Research and Extension Center, 29603 U of I Lane, Parma, ID 83660. Or call (208) 722-6701 to report the find or for more information on this insect.
Samples also may be submitted to your County Educators at your local University of Idaho Cooperative Extension office.
Other Resources:
Identification and Management resources:
Identification and biology: http://spottedwing.org/
Identification card SWD males: http://www.ipm.ucdavis.edu/PDF/PMG/SWD_IDCard.pdf
Identification card SWD females: http://www.ipm.ucdavis.edu/PDF/PMG/SWD-ID-Dsuzukii.pdf
Identification and management including trapping information:
http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=165
http://ipm.wsu.edu/small/pdf/Concord_Grape_SWD_Bulletin_v1_02.pdf
http://extension.usu.edu/files/publications/publication/ENT-140-10.pdf
Malheur Experiment Station Field Day
Announcements Treasure Valley
Posted on: June 28, 2013 by Jerry Neufeld
The OSU Malheur Experiment Station Field Day is July 10, 2013. Click on the pdf below for more information.
Iris Yellow Spot Virus
Onion Treasure Valley
Iris Yellow Spot Virus
Posted on: June 28, 2013 by Jerry Neufeld
Dr. Clint Shock from the OSU Malheur Experiment Station is reporting that Iris Yellow Spot virus has been confirmed in the Fruitland, Idaho area. Make sure onion fields are maintained at an adequate fertility level, and that the soil moisture level is kept at about the 20 centibar level. Make thrips control insecticide applications every 7 - 10 days.
Miller Research Potato Pest Management Field Day
Potato All Locations
Posted on: June 28, 2013 by Jeff Miller
The 2013 Miller Research Potato Pest Management Field Day will be held August 14 beginning at 9:00 am at Miller Research in Rupert, ID (426 E 200 N). A brief presentation will be followed by the opportunity to tour the research trials and see the performance of various fungicide programs on early blight, white mold, Rhizoctonia and other potato diseases. We will be highlighting research that has been sponsored by the Idaho Potato Commission. We will conclude the tour around noon and lunch will be provided.
Please RSVP so that we can plan appropriately for the tour and for lunch. Contact Jeff Miller at 431-4420 or jeff@millerresearch.com.
ODA restricts use of certain dinotefuran pesticides
Announcements Treasure Valley - Oregon
Posted on: June 27, 2013 by Stuart Reitz
June 27, 2013... The Oregon Department of Agriculture is restricting the use of 18 pesticide products containing the active ingredient dinotefuran while it continues the investigation of a large kill of bumblebees in Wilsonville and Hillsboro this month. By adopting a temporary rule, ODA is taking action, in an abundance of caution, to avoid the potential of similar large bee kills this summer due to specific pesticide applications.
“I have directed the agency to take this step in an effort to minimize any potential for additional incidents involving bee deaths connected to pesticide products with this active ingredient until such time as our investigation is completed and we have more information,” says ODA Director Katy Coba. “Conclusions from the investigation will help us and our partners evaluate whether additional steps need to be considered.”
The ODA restriction focuses on ornamental, turf, and agricultural pesticide products that are used by both professional applicators and homeowners. Products with the active ingredient dinotefuran registered in Oregon for other uses, such as flea and tick control on pets or home ant and roach control, are not affected by the restriction. ODA’s concern is focused on those uses that may impact pollinators.
By statute, ODA has legal authority to establish limitations and procedures deemed necessary and proper for the protection of bees and other pollinating insects. The temporary rule, which goes into effect immediately, will be enforced for 180 days, by which time ODA is expected to complete its pesticide use investigations of the Wilsonville and Hillsboro incidents. Those investigations will determine if the pesticide applications were in violation of state and federal pesticide regulations, and will assist ODA in addressing any potential future actions.
ODA’s Pesticide Program has established a website with more information on the dinotefuran restriction, including a list of specific products affected as well as instructions for those who may have purchased these products. Go to
Agricultural products containing dinotefuran include:
Product Name EPA Reg. No. Registrant
Safari 20 SG 33657-16-59639 Valent USA Corporation
Safari 20 SG 86203-11-59639 Valent USA Corporation
Safari 2 G 59639-149 Valent USA Corporation
Venom 59639-135 Valent USA Corporation
Scorpion 35SL 10163-317 Gowan Company
Please see the ODA announcement (http://oregon.gov/ODA/PEST/Pages/Pollinator.aspx) for a complete list of restricted pesticides and additional information.
Aberdeen Cereals Field Day
All Crops Eastern Idaho
Various
Posted on: June 26, 2013 by Juliet Marshall
27 Jun Aberdeen: UI Cereals Extension and Wheat Breeding Field Day
WHERE: Aberdeen R&E Center, 1693 S 2700 W, Aberdeen, ID
WHEN: Tour starts at 9:00 AM. Lunch provided.
Please join us to tour the Aberdeen Cereals Extension Variety Trials and the UI Wheat Breeding Trials!
Aberdeen Cereals Field Day
Small Grains Eastern Idaho
Various
Posted on: June 26, 2013 by Juliet Marshall
27 Jun Aberdeen: UI Cereals Extension and Wheat Breeding Field Day
WHERE: Aberdeen R&E Center, 1693 S 2700 W, Aberdeen, ID
WHEN: Tour starts at 9:00 AM. Lunch provided.
Please join us to tour the Aberdeen Cereals Extension Variety Trials and the UI Wheat Breeding Trials!
potato psyllids found in Ada, Canyon, and Elmore Counties
Potato All Locations
potato psyllids and ZC
Posted on: June 21, 2013 by Erik Wenninger
--Results to date of sticky card captures from the ca. 90 fields being monitored with 4 yellow sticky cards can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
--1 potato psyllid was found in a field in Elmore County this week.
--Results to date of sampling from the 13 fields being monitored with yellow sticky cards, vacuum samples, and leaf samples can be found here: https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdFRNeW5ReDI2bTNWM0FwYmsxSnB1aGc#gid=0
--1 potato psyllid was found in a field in Ada County and a total of 3 potato psyllids was found across two fields in Canyon County this week.
--Any scouting programs underway for potato psyllids should be intensified, and IPM programs should be in place. Refer to the following site for guidance on scouting and IPM programs for potato psyllids: http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Potato Psyllids detected in Malheur County
All Crops Treasure Valley
Potato Psyllid
Posted on: June 21, 2013 by Stuart Reitz
Four potato psyllids were found on one yellow sticky card placed in a potato field in Malheur County. This was the only field with psyllids out of 20 fields monitored during the week of June 12-19.
More information and resources on potato psyllids and zebra chip can be found at the link below.
Click on the link(s) below for more information about this pest:
» http://www.nwpotatoresearch.com/IPMStuff/PDFs/PotatoPsyllid.pdf
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Field Days Next week! Dryland and Irrigated
Small Grains All Locations
Variety information and Numerous Pests
Posted on: June 20, 2013 by Juliet Marshall
Please join us for the latest information on diseases of small grains and variety information:
25 Jun Rockland: UI Wheat Breeding Program,
9:30 AM Arbon Valley: UI Wheat Breeding Program, 1:30 pm
WHERE: Meet at UI Breeding plots in Rockland and Arbon
WHEN: 9:30 AM in Rockland, 1:30 PM in Arbon
CONTACTS: Reed Findlay, (208-226-7621), rfindlay@uidaho.edu; Jianli Chen, (208-397-4162), jchen@uidaho.edu
26 Jun Rupert: UI Cereals Extension Field Day
WHERE: 700 E. 600 N.
WHEN: registration at 9:30 AM. Lunch is provided.
CONTACTS: Joel Packham, (208-878-9461) jpackham@uidaho.edu; Juliet Marshall, (208-390-4859), juliet.marshall@uidaho.edu
27 Jun Aberdeen: UI Cereals Extension and Wheat Breeding Field Day
WHERE: Aberdeen R&E Center, 1693 S 2700 W, Aberdeen, ID
WHEN: Tour starts at 9:00 AM. Lunch provided.
CONTACTS: Juliet Marshall, (208-390-4859), juliet.marshall@uidaho.edu; Jianli Chen, (208-397-4162), jchen@uidaho.edu
Early blight found
Potato All Locations
Early Blight
Posted on: June 20, 2013 by Jeff Miller
A sample of early blight from Rangers being grown in the Hazelton area was found yesterday. Lesions were only observed on the lower, senescing leaves of the plant. This is early for this area. The most effective timing for fungicide application for early blight control is just before row closure.
A research report by Miller Research outlining the relative efficacy of different fungicide programs can be found at the link listed below.
One potato psyllid detected in Canyon County potato field
Potato All Locations
potato psyllids and ZC
Posted on: June 17, 2013 by Erik Wenninger
Among the approximately 90 fields are being monitored only with yellow sticky cards in cooperation with several crop consultants, one potato psyllid was found on a card in Canyon County last week. This psyllid will be tested for Lso, the bacterium that causes zebra chip.
Results to date of sticky card captures from the ca. 90 fields being monitored with yellow sticky cards can be found at the link below.
https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
Weekly update summaries will be extended to stakeholders; however, to obtain the most up-to-date information on trap captures, this website can be checked at any time for periodic updates over the week.
A spreadsheet detailing results from the 13 fields being monitored using sticky cards, vacuum samples, and leaf samples will be posted soon. So far no psyllids have been detected from these sites.
More information and resources on potato psyllids and zebra chip can be found at the link below.
» https://docs.google.com/spreadsheet/ccc?key=0AuZRwfbNUs2YdHc2TVpneVJoeGk0ZDRIaHJQajhDVUE#gid=0
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
No potato psyllids detected in Idaho potatoes yet
Potato All Locations
potato psyllids and ZC
Posted on: June 14, 2013 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 13 that covers commercial potato fields throughout southern Idaho. The project is funded in part by ISDA and IPC. Thirteen fields are being monitored with 10 yellow sticky cards, vacuum samples, and leaf samples. Approximately 90 additional fields are being monitored with 4 yellow sticky cards. Thus far, no potato psyllids have been found in any samples from potato fields.
More information and resources on potato psyllids and zebra chip can be found at the link below.
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Cereal Disease Update
Small Grains All Locations
Stripe rust and other cereal diseases / insects
Posted on: June 14, 2013 by Juliet Marshall
Stripe rust continues to spread in Brundage and is showing up in other susceptible winter wheat varieties such as Garland hard red winter wheat. Given the current weather, the widespread nature of stripe rust in southern and eastern Idaho, and the forecast for the next week, stripe rust will start to show up in our spring wheat fields, especially the susceptible varieties.
Many winter wheat fields are past legal application of fungicides, based on growth stage and pre-harvest application (PHI) index. Please follow label directions. For fields still within the window of application, the most susceptible varieties (based on reaction to previous 2011 races) include:
Hard winter wheat:
susceptible - Deloris, DW, Boundary, Garland, Golden Spike, Moreland, Whetstone, Yellowstone, Weston, Promontory, Juniper.
Soft white winter:
susceptible - Brundage, AP Legacy, AP Badger, WB 470, Lambert, Goetze, WB528 ("slow rusting"), Agripro Legion and Salute.
This list is by no means totally inclusive. Many of the winter wheat fields, especially towards the Magic Valley and Burley areas, are past the application window (50% heading or 30 days PHI depending on fungicide used).
For the spring wheats, keep an eye on the most susceptible varieties, which include hard wheats WB 936, UI Winchester, Klasic, Snow Crest, Bullseye, Kelse, Jerome, Jefferson, Kronos (durum), WB-Idamax, and WB-Paloma. In the soft spring wheat varieties, keep an eye on Jubilee, Alpowa, Cataldo, Penawawa, and Nick. High-temperature, adult plant resistance (HTAP) should be kicking in with varieties such as Alturas and UI Pettit, but again, please scout and never assume the environmental conditions are sufficient to sustain any initiated HTAP.
Scout resistant varieties as well - never assume stripe rust won't change virulence patterns.
IN ADDITION TO stripe rust, other problems that are surfacing include Cereal Leaf beetle. Damage has been reportedly significant in the areas south and west of Blackfoot. A great reference for CLB is the University of Idaho's Current Information Series #994 (CIS994) found at http://www.cals.uidaho.edu/edComm/pdf/CIS/CIS0994.pdf This reference puts the economic threshold for insecticide application at 3 larvae per plant or 3 eggs per plant or both BEFORE boot, or after boot growth stage, 1 larvae per flag leaf. There are many pesticides listed for CLB control in the 2013 PNW Insect Management Handbook http://pnwhandbooks.org/insect/ .
Now is the time to consider preventative action for our spring grain for control of FHB. Spring grain is fast approaching heading, with some of our earliest varieties like Klasic hard white showing awns and ear emergence. ESPECIALLY if you have planted spring grains following corn, consider application of one of three effective fungicides: Prosaro, Caramba or Proline. Conditions are favorable for FHB infection, especially with these storms! For wheat, application should be at 50% flowering. For barley, application will be at early head emergence. Internet references for FHB in small grains include http://msuextension.org/publications/AgandNaturalResources/MT200806AG.pdf (Mary Burrows at Montana State) and http://www.ag.ndsu.edu/pubs/plantsci/smgrains/pp804.pdf (Marcia McMullen at NDSU).
Winter wheat and winter barley diseases that are showing up: Barley Yellow Dwarf Virus, Wheat Streak Mosaic Virus (dry land areas), Eyespot (straw breaker foot rot), environmental damage associated with freezing temperatures.
Spring diseases that have started to show up - so far, black chaff in wheat (Xanthomonas) is just beginning. CURRENT weather is CONDUCIVE for continued development of black chaff in wheat and bacterial blight in barley (both caused by Xanthomonas bacteria. NO fungicides will control Xanthomonas).
Also, damage from Cereal Cyst Nematode is occurring in the sandy soils around Rexburg and Sugar City.
No potato psyllids detected in Idaho potatoes so far
Potato All Locations
potato psyllids and ZC
Posted on: June 7, 2013 by Erik Wenninger
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state initiated a scouting program during the week of May 13 that covers commercial potato fields throughout southern Idaho. The project is funded in part by ISDA and IPC. Thirteen fields are being monitored with 10 yellow sticky cards, vacuum samples, and leaf samples. Approximately 90 additional fields are being monitored with 4 yellow sticky cards; scouting efforts in some fields (especially in eastern Idaho) are still being initiated. Thus far, no potato psyllids have been found in any samples from potato fields; however, this week one adult potato psyllid and numerous psyllid eggs were observed on bittersweet nightshade in Twin Falls. This is not surprising given the apparent ability of psyllids to overwinter in association with this alternative host plant. Next week we will provide access to an online spreadsheet that shows results of the potato field monitoring efforts and location of fields (by county).
More information and resources on potato psyllids and zebra chip can be found at the link below.
» http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/
Additional stripe rust reports
Small Grains All Locations
Stripe rust
Posted on: June 5, 2013 by Juliet Marshall
Additional reports of stripe rust in wheat are coming in from Aberdeen, American Falls and the Pocatello area. Chad Jackson (University of Idaho) reported stripe rust in Brundage in the border of research plots on the Research station. Brad Clayson and Ron Ellis report stripe rust on the Fort Hall reservation and near Pocatello and American Falls. Additional reports continue from the Magic Valley. Most reports are of stripe rust in Brundage. If you find stripe rust in other varieties, please let me know. Again, further information is available on our website.
Stripe Rust Update
Small Grains All Locations
Stripe Rust
Posted on: June 5, 2013 by Juliet Marshall
Stripe rust has been reported in Northern Idaho by Doug Finkelnburg in the soft white winter variety 'Brundage' on the University of Idaho's research farm in Moscow, ID. Stripe rust is also confirmed in southern Idaho from the Twin Falls / Filer areas (also in Brundage) and in Declo (also in Brundage). If you are growing a susceptible variety, please scout and spray with fungicides as needed. While visiting fields in the Twin Falls area, many fields (approximately 30%) of winter wheat and winter barley were infected with BYDV. Most of the fields of winter wheat were Stephens. What appeared to be a resistant reaction to stripe rust was visible on many of the flag leaves of Stephens. Please don't assume resistance with be maintained in varieties reported as resistant, as changes can and do occur in the race structure of the stripe rust fungi. Please check our website for additional information, pictures, and fungicide efficacy chart.
