Thanks to our 2026 Sponsors:
  • Idaho Potato Commission
  • Snake River Sugar Research and Seed Alliance
  • Idaho Alfalfa & Clover Seed Commission

Search Results

Your search for "All Alerts" in All Alerts
yielded 2129 results.

Swipe Left or Right to navigate Alerts

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

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.

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.

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

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

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.

Peach Twig Borer

Tree Fruits    Treasure Valley

Peach Twig Borer

Posted on: June 15, 2016 by Dian Roberson

It is time to spray for Peach twig borer. This is a major pest of apricots, peaches, plums, and prunes. There are no known hosts outside the orchard. The larvae injure fruit and trees. Feeding on the buds and twigs occurs early in the season, after which the larva bores into the shoots, causing a characteristic "flagging" or wilting of the new growth. Later generations of larvae feed on shoots or fruit, disfiguring the fruit. Flagging of twigs indicates an infestation.

Pacific Northwest 2016 IPM Workshop

All Crops    All Locations

Posted on: June 11, 2016 by Pam Hutchinson

Pacific Northwest 2016 IPM Workshop
*IPM Train-the-Trainer Working Group*
WHAT: A 2 1/2 day short course designed to train ag professionals, crop consultants, and university extension and research faculty at all experience levels on identification, management and control of insects, diseases, and weeds as well as need-to-know pest management tactics.
This hands-on learning experience will include field sampling and identification of major pests in the area plus creation of a mounted insect collection and weeds preserved in plant presses for your very own, take-home, information transfer/educational display.
WHEN: June 27-29, 2016.
WHERE: University of Idaho Aberdeen Research and Extension Center
1693 S. 200 W.
Aberdeen, ID 83210
DON’T MISS THIS OPPORTUNITY TO ENHANCE YOUR LEVEL OF EXPERTISE IN MULTIPLE DISCIPLINES!

· Enrollment is limited to 20 individuals at each site.
· There is a charge of $125 for the course. All handouts, most materials, equipment and supplies will be furnished.
· Webinars will be available before the class. USA experts will be presenting relevant material online.

INSTRUCTORS: Pamela Hutchinson, U of I Weed Specialist
Stuart Reitz, OSU Extension
Silvia Rondon, OSU Extension Entomologist Specialist
Steve Van Vleet, WSU Extension Specialist

If interested, please contact Pamela Hutchinson
Email: phutch@uidaho.edu
Phone 208-681-1304 or 397-4181

Funding for this course was provided in part by WSARE

More psyllids found in Treasure Valley; none in Magic Valley - June 10, 2016

Potato    All Locations

potato psyllid

Posted on: June 11, 2016 by Amy Carroll

All of the psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip.

Psyllids were collected this week on sticky traps in potato in the following counties: Payette (3 fields), Owyhee (1 field), Canyon (13 fields), Ada (2 fields), and Elmore (1 field).

We had traps deployed in 82 of the estimated 107 fields (76.6%) that will be monitored this year and found psyllids in 20 of these 82 fields (24.3%).

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

Squash Bug

Landscape and Garden    All Locations

Squash Bugs

Posted on: June 8, 2016 by Rich Guggenheim

Squash Bugs have been spotted in area home gardens on squash plants. To control, hand picking can be effective if done early. There are chemical control options as well. What works best for nymphs are products that contain spinosad. Adults can be controlled with pyrethrins. When using any pesticide, always read and follow all label instructions.

Iris Yellow Spot Virus detected in Onions

All Crops    All Locations

Iris yellow spot virus / onion thrips

Posted on: June 5, 2016 by Stuart Reitz

Iris yellow spot virus was detected this week in Malheur County and Payette County.

The early appearance of virus points out the need for onion growers to be vigilant in their thrips control programs.

In addition to thrips management, minimize stress on onion plants by making sure fields are maintained at an adequate but not excessive fertility level, and that the soil moisture is kept at about the 20 centibar level. This will help reduce the severity of virus symptoms.

Please contact Stuart Reitz at Malheur County Extension (541-881-1417 / stuart.reitz@oregonstate.edu) if you have questions about your onion fields or would like assistance with virus diagnosis.

First potato psyllid found in Magic Valley potato field this season

Potato    All Locations

potato psyllids

Posted on: June 3, 2016 by Erik Wenninger

We collected our first potato psyllid from the Magic Valley this year, on a sticky card deployed in potato. In addition, we collected psyllids from several fields in the Treasure Valley. Psyllids were collected this week on sticky traps in potato in the following counties: Malheur (Oregon), Canyon (4 fields), Ada (2 fields), and Twin Falls.

We know from previous years that psyllids tend to occur earlier and in greater numbers in the Treasure Valley, and patterns observed thus far this year are consistent with this.

We had traps deployed in 68 of the estimated 107 fields (63.6%) that will be monitored this year and found psyllids in 4 of these 68 fields (11.8%).

On another note, of five potato psyllids collected in vacuum samples from bittersweet nightshade on May 17 from Shoshone Falls Park, three were positive for liberibacter (Lso), the bacterium that causes zebra chip.

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 (from which the two psyllids were found) 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

Volunteer Potato Management

Potato    All Locations

Volunteer potatoes

Posted on: June 3, 2016 by Pam Hutchinson

Here’s an update to the recent article by Pamela Hutchinson, Potato Cropping Systems Weed Scientist at the University of Idaho Aberdeen R&E Center in SE Idaho, on methods for controlling volunteer potatoes. As previously mentioned, due to the mild winter experienced in the Pacific Northwest, tubers left after the 2015 harvest can and did survive. At this point in time (first week of June), volunteer plants may be past the tuber initiation, which has been shown to be the best stage for application of many herbicides for effective control, and to prevent re-sprouting and tuber production. However, that is not the case for all fields.

In addition, there are reports of newly emerging sprouts/plants after fields appear to have been sprayed. Fields should be monitored closely after an application in order to determine if further actions are needed!

Thanks,

Pam

First Lso-positive potato psyllids found in Idaho potato fields this season

Potato    All Locations

potato psyllids

Posted on: June 2, 2016 by Erik Wenninger

Both of the potato psyllids found last week (one in each of two potato fields in Canyon County) tested positive for liberibacter (Lso; the bacterium that causes zebra chip).

A more detailed update of trapping results from the past week will be posted on Friday.

We continue to urge growers and crop consultants to implement IPM programs for zebra chip. 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/extension/news/psyllid-management

Idaho Wheat Commission and UI-CALS wireworm survey

Small Grains    All Locations

wireworm

Posted on: June 1, 2016 by Jerry Neufeld

Dr. Cathy Wilson (Director of Research Collaboration) from the Idaho Wheat Commission and Dr. Arash Rashad from the UI-CALS Department of Plant, Soil, and Entomological Sciences are conducting a survey about the impact of wireworm in cereals production. Wireworm has been a serious pest in cereals due to limited management options. The only registered chemistry in cereals, i.e. neonicotinoid seed treatment, has provided limited protection and wireworms continue to be a major challenge to Idaho producers. The pest is wide spread and is present across southern and northern Idaho. Previous research conducted in Canada has shown that fipronil causes considerable mortality in wireworms and the IWC and UI-CALS need this survey information to initiate a section 18 application for growers that are greatly suffering from this pest. Results from this survey will also be used to highlight producers/industry concerns about this pest, and will assist in approaching various sources of funding to support research on wireworm management in the PNW and intermountain regions. Please take a few minutes to complete this survey about an important pest in cereals. Start by clicking on the link below.

Malheur Experiment Station Weed Research Tour on June 9th

All Crops    All Locations

Posted on: May 31, 2016 by Bill Buhrig

The Malheur stop of the Snake River Weed Research Tour will be in Ontario, OR on June 9th starting @ 8AM at the Experiment Station. Please see the attachment for more information. This is free to the public and pesticide recertification credits are going to be available. There will even be lunch!

Potato Psyllids in Malheur County

Potato    All Locations

Potato Psyllid

Posted on: May 29, 2016 by Stuart Reitz

We collected our first potato psyllids of the season from sticky cards in Malheur County potato fields. Two psyllids were found – one in each of two potato fields.

For information and resources on potato psyllids and zebra chip, including management and scouting recommendations, please see the following article: http://www.nwpotatoresearch.com/IPMStuff/PDFs/PotatoPsyllid.pdf.

Additional information on pest management in potatoes in the PNW is available at:
http://www.nwpotatoresearch.com/IPMStuff/PDFs/NorthwestInsectGuidelines.pdf

Iris yellow spot virus in Volunteer Onions

Onion    All Locations

Iris yellow spot virus / onion thrips

Posted on: May 28, 2016 by Stuart Reitz

Iris yellow spot virus (IYSV) was detected in volunteer onions in the Ontario, OR area. Characteristic necrotic, diamond-shaped lesions were found on flower scapes. Volunteer onions can serve as a source of virus-infected thrips to move into this season's onion crop.

Although the virus has not yet been found in this season's bulb fields, please continue to monitor fields carefully for thrips. Thrips populations have grown substantially over the past week, and the high temperatures forecast for later next week will further increase thrips development and population growth.

Reducing overall stress on onions will help reduce the severity of damage from thrips and virus

If you see potentially symptomatic plants that you would like tested for virus or have questions about thrips and the virus, please contact Stuart Reitz, Malheur County Extension, 541-881-1417.

First potato psyllids found in Idaho potato fields this season

Potato    All Locations

potato psyllids

Posted on: May 27, 2016 by Erik Wenninger

May 27, 2016 – First potato psyllids found in Idaho potato fields this year

We collected our first potato psyllids of the season from sticky cards in Idaho potato fields. Two psyllids were found – one in each of two potato fields in Canyon County. We found our first potato psyllids at a similar time last year.

Sticky cards have now been deployed in 66 of the estimated 97 fields that will be included in the monitoring program this year.

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 link below.

http://www.uidaho.edu/extension/news/psyllid-management

Detailed results from the "Light" sites (from which the two psyllids were found) 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

“Heads up” for Volunteer Potato Control in other crops.

All Crops    All Locations

Posted on: May 26, 2016 by Phillip Wharton

With the very mild winter weather conditions this year a lot of volunteer potatoes survived over winter. Growers are now seeing a lot of problems with volunteer potatoes in other crops such as corn, sugar beet, wheat and onions. Volunteer potatoes can be very hard to eliminate if the correct control measures are not taken at the most appropriate time. The potato tuber initiation stage has been shown to be the best time for herbicide application in order to kill the volunteer potato plant, prevent re-sprouting, and prevent tuber production. Attached, Dr. Pamela Hutchinson, Potato Cropping Systems Weed Scientist, has put together a great article on methods for controlling volunteer potatoes in other crops.

Clarification on “New strain of Tomato Late Blight detected in Idaho”

All Crops    All Locations

late blight

Posted on: May 26, 2016 by Phillip Wharton

A point of clarification on the announcement that a “New strain of Tomato Late Blight detected in Idaho”: Late blight has NOT been found in Idaho this year yet in either tomatoes or potatoes. The strain of late blight referred to in the announcement is not new as it has been found in tomatoes and potatoes in 2013, 2014 and 2015, with a widespread outbreak in potatoes throughout SE Idaho last year. The purpose of the leaflet linked to in the previous announcement is to make home owner’s and growers aware of the potential threat of tomato late blight in home owners tomatoes to commercial potato fields. This is because the risk of an outbreak of late blight in potatoes this year is high due to the current cool wet weather and the potential that the late blight pathogen was able to over winter in volunteer potatoes due to the very mild winter conditions. For more information see http://bit.ly/1XSWHsS

New strain of Tomato Late Blight detected in Idaho.

Landscape and Garden    All Locations

Late Blight in Tomatoes.

Posted on: May 25, 2016 by Rich Guggenheim

Late blight in tomatoes will likely be seen again this year in Idaho. There is a new highly infectious strain in Idaho this year, US23 which is pathogenic both to tomatoes and potatoes, and some research suggests even petunias.
Application of fungicides in the home garden are preventative only and not curative. Best management practices include avoiding water on leaves of plants and removing infected plants which may spread the disease.
Some varieties are resistant to late blight.

For more information, contact your local County Extension Office!

Update of potato psyllid monitoring in Idaho - 20 May 2016

All Crops    All Locations

potato psyllids

Posted on: May 20, 2016 by Erik Wenninger

This week we collected our first sticky cards of the season from potato fields. No potato psyllids were found in potato fields this week. Sticky cards had been deployed in only 27 of the estimated 96 fields that will be included in the program this year, but quite a few more sites were established this past week.

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/extension/news/psyllid-management

Please Wait... Your request is being processed...