Insect Management

burrower bug nymphs

Burrower Bugs in Soybeans

June 12, 2018
White-margined Burrower Bug nymphs have been identified in high numbers in a soybean field near Beatrice. This pest is seen periodically in Nebraska in a variety of crops.

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Differential grasshopper
Figure 1. The differential grasshopper, one of four grasshopper species in Nebraska that feed on crops. The others are the twostriped, redlegged, and migratory grasshoppers.

Grasshopper Control Most Effective Early Season

June 12, 2018
Heavy populations of immature grasshoppers were found in field borders in south central Nebraska corn fields this week. Scout and if numbers warrant, treat now when they're small and concentrated in borders. See story for identification tips, treatment thresholds, and control recommendations.

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Wheat stem sawfly video screen capture

Wheat Stem Sawfly Numbers Up in the Panhandle

June 6, 2018
Video: Populations of wheat stem sawflies, a serious pest of wheat in western Nebraska, are at high numbers this year. Surveys are underway in wheat fields, grasslands and pastures to evaluate grass hosts for the pest and its parasitoids.

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Insect light trap

Insect Light Trap Data Available for 3 Sites

June 6, 2018
UNL Extension Entomology is monitoring crop insect pests (primarily moths) using black light traps at the Haskell Ag Laboratory near Concord, the South Central Ag Laboratory near Clay Center, and the West Central Research and Extension Center near North Platte.

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wireworm

Scout Emerging Corn for Insects; Don't Take Protection for Granted

May 16, 2018
As corn begins to emerge, be alert to the potential for damage from early season insects such as cutworms, wireworms, white grubs or wheat stem maggot. Seed treatments provide some protection, but can be overwhelmed in some circumstances, allowing losses.

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Life cycle of the black grass bug in western Nebraska

Scouting Recommended in Wheatgrass for Black Grass Bugs

April 27, 2018
In western Nebraska when wheatgrass, especially crested wheatgrass, starts growing, it’s time to begin monitoring for black grass bugs. Feeding damage caused by these insects can substantially reduce wheatgrass forage production.

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Cover crop field with mixed-species plantings
Later season field of cover crops in southeastern Nebraska. (Photo by Paul Jasa)

Timing of Cover Crop Termination and Related Factors

April 20, 2018
Should the cold spring delay cover crop termination? Growers walk a fine line between growing cover crops long enough to get the biomass they want without reducing yield in the following grain crop. This discussion from an agronomist, entomologist and weed scientist looks at various factors to consider.

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Western bean cutworm larvae on an ear of corn

Efficacy of Foliar Insecticide Treatments for Western Bean Cutworm in Corn

April 11, 2018
Researchers report on three years of field research in west central Nebraska where 4-14 insecticide treatments were tested under irrigated conditions.

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