Corn Insects

western bean cutworm moth

Scouting and Treatment Recommendations for Western Bean Cutworm

July 15, 2021
The first western bean cutworm moths were captured in University of Nebraska-Lincoln black light traps on June 25-27 at Clay Center, June 26-27 at North Platte, and July 1 at Scottsbluff.

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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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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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Seed corn maggots
Figure 1. Seed corn maggots. (Photo by Jim Kalisch)

Avoiding Injury from Seed Corn Maggot

April 7, 2021
For producers concerned about seed corn maggot, these recommendations could help reduce injury in soybean fields this year. 

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Western corn rootworm beetle feeding on a leaf of corn

Western Corn Rootworm Beetles Emerging, Time to Scout

July 7, 2020
Western corn rootworm beetles began emerging in southeast and south central Nebraska at the end of June. Beetles emerge somewhat later in northeastern and western Nebraska.

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western bean cutworm larvae

Western Bean Cutworm Flight Predictions for 2020

June 17, 2020
The growth stage of corn during WBC flight is critical as moths prefer to lay their eggs on corn plants between the late whorl to early tassel stage. Survival of young WBC larvae is highest if they can feed on newly emerged tassel prior to moving into the ears.

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Seed corn maggots
Seed corn maggots

Avoiding Injury from Seed Corn Maggot

May 20, 2020
We have received several reports of injury from seed corn maggot that has reduced stands of Nebraska soybeans. Learn why they may have been more problematic this year.

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CW Podcast: Late-Maturing Crops and Insects

September 13, 2019
In this month’s CropWatch Podcast Extension Educator Michael Sindelar is joined by entomologist Robert Wright to discuss insect issues in late maturing corn and soybeans.

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