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corn earworm
Corn Treasure Valley
corn earworm
Posted on: July 12, 2013 by Jerry Neufeld
The University of Idaho CIS 366 entitled “Timing Corn Earworm Control,”states that summer corn earworm moths will begin laying eggs in fresh corn silk at approximately 1300 growing degree days (GDD). Egg hatch and larvae attack will begin about 73 GDD later. Click on the pdf below to view CIS 366.
According to the Oregon State University GDD model for Corn Earworm (http://uspest.org/cgi-bin/ddmodel.us ), we are currently at 1057 GDD in the Caldwell area, 1008 GDD in the Nampa area, and 1134 GDD in the Parma area. We will hit 1300 GDD in the Caldwell area on approximately 7/21, 1300 GDD in the Nampa area on approximately 7/24, and 1300 GDD in the Parma area on approximately 7/18. At each location, we will hit 1373 GDD about 3 to 4 days after reaching 1300 GDD. Those fields with fresh silk at 1373 GDD are most vulnerable to attack from corn earworm larvae. The links below contain management information from the Pacific Northwest Insect Management Handbook.
» http://pnwhandbooks.org/insect/vegetable-seed/corn/corn-seed-corn-earworm-sweet-corn-only
» http://pnwhandbooks.org/insect/vegetable/vegetable-pests/hosts-and-pests/corn-sweet-corn-earworm
potato tuberworm moths
Potato All Locations
potato tuberworm moths
Posted on: July 12, 2013 by Erik Wenninger
Potato tuberworm moths have been captured in pheromone traps in Malheur Co (Stuart Reitz, Malheur Co. Cooperative Extension). Feeding by tuberworm larvae may cause extensive damage to tubers in the field and in storage. Thus far, we are unaware of current tuberworm infestations in Idaho; however, Mike Cooper, ISDA, in cooperation with Bill Buhrig, Jim Barbour, and Erik Wenninger, University of Idaho, will be deploying some pheromone traps in Idaho to monitor for moths. We encourage growers and crop consultants, especially those in western Idaho, to be aware of this pest. For more information on tuberworm moths, consult the following references:
http://www.agri.idaho.gov/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php
http://www.cals.uidaho.edu/edComm/pdf/cis/cis1125.pdf
http://extension.oregonstate.edu/catalog/pdf/pnw/pnw594.pdf
bean aphids in sugar beet
Sugarbeets All Locations
bean aphids
Posted on: July 11, 2013 by Erik Wenninger
Black bean aphids have been observed in sugar beet fields at the U-Idaho Kimberly R & E Center. The bean aphid is a dark-bodied aphid, about 1/16-inch long; individuals may be winged or wingless. Aphids are most abundant 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.
Aphids are attacked by a variety of predatory and parasitic insects, including lady beetles. If natural enemies are absent, consider an insecticide application if bean aphid colonies cover 20 to 40 percent of leaf surfaces.
For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook (http://pnwhandbooks.org/insect/agronomic/sugar-beet).
Iris Yellow Spot in Malheur County
Onion Treasure Valley
Iris yellow spot virus
Posted on: July 9, 2013 by Stuart Reitz
Iris yellow spot virus has been confirmed in onion fields in the Nyssa and Ontario, Oregon areas.
Reducing plant stress will help to reduce the severity of the disease. Try to minimize stress by making sure fields are maintained at an adequate fertility level, and that the soil moisture is kept at about the 20 centibar level.
Maintain good thrips management with insecticide applications to help to reduce further spread of the virus.
Correction to date of Caribou Field day - THURSDAY, the 18th
Small Grains Eastern Idaho
Variety Trials
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 - Thursday, 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.)
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/
