Julie Peterson - Extension Entomologist

Julie Peterson

Faculty Bio
CW Welcome to Julie Peterson
Twitter: @PetersonInsects

Example of bioassay used for monitoring ECB susceptibility to Bt protein

First ECB Resistance to Bt Corn Reported in Canada May 22, 2019

The first case of field-evolved resistance of European corn borer (ECB) to Bt transgenic corn has been reported in Canada. What does this mean for Nebraska corn farmers and how can they help maintain resistance here?

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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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Corn earworm larva

What’s New in Entomology: West Central Nebraska January 9, 2019

A survey of ongoing, new, and potential insect pest threats to crop production in west central Nebraska. This article is from the 2019 Crop Production Clinic Proceedings.

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Corn rootworm

Which Bt Traits Do You Need to Buy? November 15, 2018

When it comes to buying corn seed, one way to save money is to ensure you are not investing in GMO insect protection traits you do not need for your particular farm or field. This guide can help you determine which traits you need where.

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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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Western bean cutworm moth flights

Western Bean Cutworm Pest Update January 8, 2018

An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics: An update on the western bean cutworm, a major pest in corn and dry bean production for most of Nebraska.

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