Pest Management

Soybean aphids on leaf

Although at Low Levels, Soybean Aphids are in Nebraska

August 2, 2023
With soybean aphid infestations, it's important to preserve natural enemies under an integrated pest management approach, as well as treating only when pest populations reach economic or treatment thresholds, to let beneficial insects do their work.

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Soybean aphid

Soybean Aphid Scouting and Management

August 2, 2023
Soybean aphids in Nebraska typically reach the economic threshold and require treatment in late July through August. Treatment during this time is usually enough to keep aphid populations from resurging before they leave fields for the season. 

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Corn leaf aphids

Watch for Aphids in Corn

July 27, 2023
Aphids cause the greatest amount of injury while they are feeding within the whorl prior to tassel emergence. Treatment may be needed if pollination is no more than half complete and more than half of the corn tassels are covered with aphids.

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Grasshopper in meadow
Grasshoppers tend to thrive in dry, hot conditions while outbreaks can be severely limited by cool, wet spring weather, and as such, producers in eastern Nebraska might see an increase in outbreaks this summer, while western Nebraska grasshopper populations may be reduced.

Pasture and Forage Minute: Grasshopper Control, Sub-irrigated Meadow Hay Harvest

July 7, 2023
Extension insights on grazing strategies to accommodate weather changes, grasshopper scouting and treatment recommendations, and tips for getting the most out of sub-irrigated meadow hay harvest in Nebraska. 

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Wheat stem sawfly
Wheat stem sawfly on a piece of wheat. (Photo by Jeff Bradshaw)

‘Great Plains Sawfly Survey Project’ Seeks Grower Input

July 6, 2023
Growers are encouraged to share their insights on controlling wheat stem sawfly through the survey, which will help a UNL-led team of researchers find improved solutions for management of this pervasive wheat pest.

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Western bean cutworm adult moth

Degree-days for Prediction of Western Bean Cutworm Flight

June 29, 2023
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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Soybean gall midge larvae

Soybean Gall Midge Regional Field Day Set for July 25

June 26, 2023
Participants will learn how to identify soybean gall midge larvae and plant injury, and learn about the latest research on control options.

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N Field logo

This Week on N Field: Alfalfa Insects

June 16, 2023
Learn how to spot the different feeding signs of alfalfa weevils and aphids, and why it's important to identify all insects present in an alfalfa field before applying chemical control.

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