Pest Management

Fall Armyworm

Fall Armyworms in Pastures, Alfalfa, Small Grains, Cover Crops, and Lawns

September 24, 2021
We continue to receive questions on management with the unprecedented number of fall armyworms experienced in Nebraska this fall. The following is a Q/A to address the specific questions we’ve received.

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Soybean gall midge infestation map

Soybean Gall Midge Identified in Eight Additional Nebraska Counties

September 1, 2021
Soybean gall midge (SGM) injury and pressure varied considerably across its geographic range, with the largest concentration of injured soybean fields occurring in east-central Nebraska this season. To date, a total of 140 Midwestern counties have been identified as infested with SGM.

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Western bean cutworm adult

Degree-days for Prediction of Western Bean Cutworm Flight

July 1, 2021
Measuring the amount of heat between an upper and lower threshold to which an insect has been exposed, degree-days models can provide a high level of precision in predicting western bean cutworm peak flight.

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Potato leafhopper

Start Scouting for Potato Leafhoppers in Alfalfa

June 23, 2021
Potato leafhoppers have the potential to injure alfalfa in Nebraska every year and have been reported recently in southeast Nebraska. Generally they are a second and third cutting pest.

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New seeding alfalfa

Pasture and Forage Minute: Management Strategies for Alfalfa Insects, Irrigation

June 17, 2021
This week, extension educators review seasonal issues for alfalfa — scouting practices for alfalfa pests, when and how to correctly irrigate alfalfa, and harvest guidelines for first-year alfalfa.

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Soybean gall midge-injured field

Soybean Gall Midge Emergence at Several Sites in Nebraska

June 10, 2021
On June 8 and 9, several sites in east-central and northeast Nebraska recorded emergence of soybean gall midge adults. Growers should consider making field edge applications now.

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ECB adult female

Light Trap Data Available Online

June 8, 2021
UNL Extension Entomology is monitoring crop insect pests (primarily moths) using black light traps at university facilities at North Platte, Clay Center, Mead and Concord.

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Wheat stem sawfly
An adult wheat stem sawfly in wheat at the High Plains Ag Lab.

Wheat Stem Sawfly Emergence — Field Notes from Early June

June 7, 2021
Recent observations indicate very high populations of wheat stem sawfly in Nebraska wheat fields, with emergence not only from field edges but also deep within fallow fields. Documentation on infestations is encouraged for successful fall sawfly management.

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