Montana State University

Eva Grimme, Ph.D.

Plant Disease Diagnostician
Department of Plant Sciences and Plant Pathology
121 Plant BioScience Facility
Montana State University
Bozeman, MT 59717-3150

Tel: (406) 994-5150
Fax: (406) 994-7600
eva.grimme@montana.edu

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Recent Alerts

Milestone® Receives a Supplemental Label for Off-Farm Distribution of Hay in Montana (General)
Description: Milestone® (aminopyralid) is an effective chemistry that provides effective management of a wide array of broad-leaf weeds. A supplemental label is now available for use in Montana allowing off-farm distribution of grass harvested for hay.
Alert Period: 07/01/2015 - 10/08/2015
Submitted By: Cecil Tharp
Alert Documents:
Fungicide decision tool: feedback requested (General)
Description: Kate Fuller and I have been working on a fungicide decision tool, and we’d like some feedback. It is currently a DRAFT. It should help growers visualize the yield benefit from a fungicide application given the yield of the crop, the cost of the application, and the amount of drive-down, if any. Please take a minute to try the tool at http://fredrikklj.pythonanywhere.com/ecns/powder/graph/ and give us FEEDBACK to improve the tool via a web survey at https://www.surveymonkey.com/r/7XDHXJ6 Thank you very much! --Mary Burrows
Alert Period: 06/26/2015 - 07/10/2015
Submitted By: mary burrows
Alert Documents:
Scout for Ascochyta blight in pulse crops (General)
Description: We've received several samples of peas in the last week with fungal diseases. This is a good time to scout your crop. I've attached a lot of pictures of fungal and bacterial diseases of pulse crops. There is a pulse crop disease guide you can get from your county agent or online through MSU Extension Publications. http://store.msuextension.org/Products/Diseases-of-Cool-Season-Legumes-(Pulse-Crops-Dry-Pea-Lentil-and-Chickpea)__EB0207.aspx Enjoy. --Mary Burrows, 599-9966, mburrows@montana.edu
Alert Period: 06/22/2015 - 07/20/2015
Submitted By: mary burrows
Alert Documents:
“White head” syndrome in small grains (Cropland Diseases)
Description: Time again for the white head agalert! This year, frost is probably primary. But there are other causes. See attached --Mary Burrows
Alert Period: 06/22/2015 - 07/27/2015
Submitted By: mary burrows
Alert Documents:
Grasshopper Update (Cropland Insects)
Description: Statewide the grasshopper outlook for Montana this year does not look severe, but high populations have been reported from some hot spots. The attached Alert provides an update on current grasshopper populations.Statewide the grasshopper outlook for Montana this year does not look severe, but high populations have been reported from some hot spots. The attached Alert provides an update on current grasshopper populations along with USDA rangeland grasshopper hazard maps for 2014 and 2015.
Alert Period: 06/18/2015 - 07/31/2015
Submitted By: Kevin Wanner
Alert Documents:
Goldsky herbicide SLN (General)
Description: An special local need (SLN) for extended application of Goldsky herbicide has been approved and registered, the label is attached
Alert Period: 06/18/2015 - 08/31/2015
Submitted By: Fabian Menalled
Alert Documents:
Barley Thrips Update (Cropland Insects)
Description: Barley thrips have been reported throughout the golden triangle region. This Alert updates information released earlier in the season.
Alert Period: 06/19/2015 - 07/31/2015
Submitted By: Kevin Wanner
Alert Documents:
Updated Wheat Streak Mosaic Virus montguide (Cropland Diseases)
Description: At long last...attached to this agalert is the new WSMV montguide with updated, hopefully clear variety ratings and some new research information. It will be available for download from MSU extension under publications within the next couple of days. --Mary Burrows
Alert Period: 06/17/2015 - 07/08/2015
Submitted By: mary burrows
Alert Documents:
Aphids Moving to Developing Wheat Heads (Cropland Insects)
Description: MSU has received several reports of English grain aphid feeding on developing wheat heads. This alert provides information to identify and manage this insect pest.
Alert Period: 06/17/2015 - 07/16/2015
Submitted By: Kevin Wanner
Alert Documents:
The window for THIMET 20-G application (General)
Description: This alert is an update on the window for applying THIMET 20-G for control of wheat stem sawfly.
Alert Period: 06/15/2015 - 09/01/2015
Submitted By: Kevin Wanner & Cecil Tharp
Alert Documents:
Wheat Stem Sawfly and Thimet (Pesticides)
Description: The wheat stem sawfly (WSS) is one of the most damaging insect pests of wheat in the northern Great Plains region. A new application method for the insecticide Thimet 20-G® has received a 24 (C) special local need registration label for control of WSS in spring and winter wheat crops, and research has demonstrated that it is effective.
Alert Period: 06/10/2015 - 08/29/2015
Submitted By: Cecil Tharp
Alert Documents:
Canola Flea Beetle Damaging Canola (Cropland Insects)
Description: Dr. Gadi Reddy at the Western Triangle Ag Research Center has reported outbreak levels of canola flea beetle. This alert provides management recommendations including thresholds for treatment and supporting publications from WTARC.
Alert Period: 06/10/2015 - 07/31/2015
Submitted By: Kevin Wanner
Alert Documents:
Wheat Midge Alert (Cropland Insects)
Description: The orange wheat blossom midge flight has started earlier this season. Bob Stougaard, Dan Picard, and Brooke Bohannon provide an update on midge activity and recommend scouting winter wheat for midge due to the early flight and synchrony with winter wheat crop development.
Alert Period: 06/09/2015 - 07/15/2015
Submitted By: Kevin Wanner
Alert Documents:
Grasshopper Activity (Cropland Insects)
Description: Grasshoppers have been hatching across Montana for the last 2-3 weeks. They remain small and the statewide risk of damage from grasshoppers remains low based on USDA ARS hazard maps. A few species overwinter as large nymphs, and now have developed into large adults that can fly. While their appearance causes concern, these species typically do not cause economic damage. The attached alert provides more information.
Alert Period: 06/08/2015 - 07/15/2015
Submitted By: Kevin Wanner
Alert Documents:
Russian wheat aphid identified by Schutter Diagnostic Lab (Cropland Insects)
Description: Russian wheat aphid
Alert Period: 06/04/2015 - 07/24/2015
Submitted By: Kevin Wanner
Alert Documents:
Field day at the MSU Post Farm - July 21, 2015 (General)
Description: The annual crops and weeds field day will be held at Montana State University's Post Research Farm, six miles west of Bozeman on Tuesday July 8, from 8:30 a.m. to 3:30 p.m.
Alert Period: 05/12/2015 - 07/21/2015
Submitted By: Fabian Menalled
Alert Documents:
2015 Crops and Weeds Field Day (General)
Description: Field day - Post Farm. July 21, 2015 (please note the correct date -July 21, not July 8)
Alert Period: 05/12/2015 - 07/21/2015
Submitted By: Fabian Menalled
Respiratory Protection of Increasing Concern for MT Applicators (General)
Description: The use of highly toxic pesticides that require respiratory protection were on the decline for over two decades. Recently, the use of one highly toxic active ingredient is on the rise due to glyphosate resistant kochia in Montana. This active ingredient is known as paraquat. Paraquat is in such formulations as Devour®, Firestorm®, Helmquat 3SL®, Gramoxone SL®, Cyclone SL 2.0®, Bonedry®, Willowood Paraquat 3SL®, Paraquat Concentrate® and Parazone 3SL Herbicide®. Paraquat is a photosynthesis inhibitor and acts as a non-selective contact herbicide.
Alert Period: 04/27/2015 - 09/23/2015
Submitted By: Cecil Tharp
Alert Documents:
New Special Registration for Repelling Sand Hill Cranes Approved in Montana (Pesticides)
Description: A section 24(c)special use registration was granted for the use of Avipel liquid seed treatment and Avipel dry seed treatment. These seed treatments can be used for the protection of field and sweet corn against Sand Hill Cranes until July 1st, 2019 in Montana. See attached 24(c) labels.
Alert Period: 01/24/2014 - 09/16/2015
Submitted By: Cecil Tharp
Alert Documents: