Cutworm incidence and damage on peas (Cropland Insects)
Description: Heavy cutworm damage was noticed on peas at certain locations in the Sunburst and other Golden Triangle areas of Montana. Cutworms are the larvae (caterpillars) of numerous species of night-flying moths in the family Noctuidae, which are usually active for feeding during the night. The larvae are called cutworms because they cut down young plants when feeding on stems at or below the soil surface. Cutworm damage occurs on early in the season when plant seedlings are small and have tender tissue. On a regular basis monitor your fields, particularly during late afternoon and evening when cutworms are active, so you can notice their movement when they are initial present. Refer the MontGuide to know about biology, damage, monitoring and decision-making guidelines, http://store.msuextension.org/publications/agandnaturalresources/mt200005ag.pdf For chemical control, refer High Plains IPM Guide, https://wiki.bugwood.org/HPIPM:Cutworms_DB Cutworm
Alert Period: 05/23/2017 - 07/31/2017
Submitted By: Gadi VP Reddy
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Pea Leaf Weevil on Chickpea (Cropland Insects)
Description: Chemical control options are listed in the https://wiki.bugwood.org/HPIPM:PC_Pea_leaf_weevil and a new MontGuide provides biology and management practices summary. Both preventive (seed treatment) and sprayed insecticides can be used to manage the pea leaf weevil. Seed treatments protect the root nodules from larval feeding. Foliar sprays are targeted toward the adults, specifically the female weevils before they lay eggs, to prevent yield loss caused by the larvae. It remains uncertain whether pea leaf weevil adults feeding on chickpea will cause economic damage or not since Saskatchewan Canada Pulse growers’ news bulletin considers this as minor pest for chick pea as because of failing to multiply their generations. However, thresholds developed for pea could be used for spraying field infested with pea leaf weevil adults. Spraying is generally reached in pea when 1/4 to 1/3 of the plants display feeding notches on the clam leaves (the most recently emerging leaves) or leaf pairs.
Alert Period: 05/22/2017 - 06/30/2017
Submitted By: Gadi VP Reddy
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Overwintering stripe rust widespread, at low levels (Cropland Diseases)
Description: Attached are variety information, a link to a fungicide calculator and photos of resistant varieties. --Mary Burrows, mburrows@montana.edu, 599-9966
Alert Period: 05/15/2017 - 05/31/2017
Submitted By: mary burrows
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Wheat streak mosaic virus and the wheat curl mite (Cropland Diseases)
Description: A lot of information on wheat streak mosaic virus: the host, the pathogen and the environment. Contact me if you have any questions, --Mary Burrows mburrows@montana.edu, 599-9966
Alert Period: 05/15/2017 - 05/31/2017
Submitted By: mary burrows
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Spring Nutrient Deficiencies (General)
Description: Cold and variable April weather has spiked the number of nutrient deficiencies being seen across the state. Things to consider if debating a rescue fertilizer treatment.
Alert Period: 05/03/2017 - 05/31/2017
Submitted By: Clain Jones
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Alfalfa weevil (Cropland Insects)
Description: MSU has been receiving questions about alfalfa weevil management in the upcoming season. The attached AgAlert summarizes scouting and management recommendations for this pest.
Alert Period: 03/28/2017 - 05/31/2017
Submitted By: Kevin Wanner and Emily Glunk
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EPA Finalizes Pesticide Certification & Training Requirements for RUP Applicators (Pesticides)
Description: People should be aware of the Environmental Protection Agency (EPA) pesticide certification and training rule finalized on December 12th, 2016 and published in the Federal Register on January 4. 2017. This applies to those that apply restricted use pesticides (RUP) across the nation
Alert Period: 01/24/2017 - 11/17/2017
Submitted By: Cecil Tharp
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