Western Bean Cutworm

western bean cutworm moth

Scouting and Treatment Recommendations for Western Bean Cutworm

July 8, 2020
The first western bean cutworm moths were captured in University of Nebraska-Lincoln black light traps June 23 at North Platte, June 26 at Clay Center, and July 7 at Scottsbluff.

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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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Crop progress and conditions for corn from the USDA National Agricultural Statistics Service indicating predicted timing for corn growth stages (2019).

Using Degree-Day Models to Predict Western Bean Cutworm Flights

June 21, 2019
With late planting, slow emergence, and cooler summer temperatures affecting corn development, will corn be spared from western bean cutworm damage in 2019. Unfortunately, models indicate WBC growth is also delayed. See a table of predicted dates for 2019 WBC flights in Nebraska and surrounding states.

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Western bean cutworm eggs (Photo by Jen Bruggeman)
Western bean cutworm eggs (Photo by Jen Bruggeman)

Introducing the 'Western Bean Cutworm Central' Webpage

March 8, 2019
This new webpage is designed to serve as a clearinghouse of information related to western bean cutworm biology, behavior, and management in both corn and dry bean agroecosystems.

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Western bean cutworm in corn

The Biology and Management of Ear-Feeding Lepidopteran Pests of Corn in Nebraska

January 9, 2019
A guide to Identification and management of European corn borer (Ostrinia nubilalis), western bean cutworm (Striacosta albicosta), corn earworm (Helicoverpa zea), and fall armyworm (Spodoptera frugiperda).

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Western bean cutworm moth
Figure 1. Western bean cutworm moth (Photos by Julie Peterson)

Scouting and Treating Western Bean Cutworm

July 11, 2018
Western bean cutworm egg masses have been reported on field corn in a number of locations across the state this week. Here's what to look for in the field, treatment thresholds and recommendations.

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Western bean cutworm moth
Western bean cutworm moth

Using Degree-Day Models to Predict Western Bean Cutworm Flights

June 21, 2018
By using a degree-day model, growers can account for the effect of temperature on insect development and approximate when certain insect stages will occur. See predicted cutworm flights and recommended scouting periods for 14 Nebraska locations.

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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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