Julie Peterson - Extension Entomologist

Julie Peterson

(faculty)
Work
WCREC 402 W State Farm Rd North Platte NE 69101-7751
US
Work 308-696-6704 On-campus 7-6704

Faculty Bio

CW Welcome to Julie Peterson

Twitter: @PetersonInsects

western bean cutworm in corn
Figure 1. (left) Western bean cutworm causing feeding damage in corn. (Photo by Jim Kalisch and Silvana Paula-Moraes) (right) A green lacewing beneficial insect eating western bean cutworm eggs. (Photo by Julie Peterson)

Which Bt Traits Do You Need to Purchase? March 24, 2017

When it comes to buying corn seed, one way to save money can be to ensure that you don't invest in GMO insect protection traits that you do not need for your particular farm or field. Which corn rootworm, western bean cutworm, or European corn borer traits do you need? This article can help you determine which of the nine types of Bt proteins might best serve your needs.

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army cutworms

Cutworm Scouting Urged in Western Nebraska Wheat and Alfalfa March 23, 2017

Army cutworms are beginning to show up from central Kansas to Chappell. As wheat breaks dormancy, scouting for cutworms is advised from now through April to determine whether treatment is warranted.

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Field pea

Field Pea Seeding Rates, Seeding Depth, and Inoculant March 13, 2017

Grain-type field peas are a cool season grain crop grown as an alternative for no-till summer fallow in a semiarid cereal-based cropping systems such as wheat-corn-fallow and/or wheat-fallow. They are typically planted in mid-March and harvested late-July. This article reports on research conducted on seeding practices and offers recommendations for producers on the economically optimal seeding rate, seeding depth, and inoculant to grow field peas in western Nebraska.

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field pea comparison
Figure 1. Comparison of water use of two systems -- summer fallow and field peas -- between March 27 and July 20. (Photos by Stranhinja Stepanovic)

Field Pea Production: Rotational Costs and Benefits March 10, 2017

Research findings show benefits in soil nutrient cycling, water infiltration, and microbial activity from replacing fallow with grain-type field peas in a wheat-fallow rotation in western Nebraska.

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western corn rootworm beetle

Considering Non-Bt Traited Corn in 2017? Plan for More Scouting February 8, 2017

If you're considering planting non-Bt corn this year, entomologists urge you to plan for the additional pest management practices (and associated costs) you may need to adopt, given this decision.

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Western bean cutworm damaging an ear of corn
Western bean cutworm damaging an ear of corn

Nebraska Perspective on Efficacy of Cry1F Bt Corn Against Western Bean Cutworm October 21, 2016

While entomologists in the Eastern Corn Belt this month reported reduced efficacy of the Cry1f Bt protein against western bean cutworm in corn, Nebraska growers have been facing this for several years. While Cry1F products will still help control other pests, growers are advised to scout for WBC and determine whether treatment is necessary.

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wheat stem sawfly
wheat stem sawfly

Wheat Insects in 2016 September 1, 2016

The wheat stem sawfly continues to be the predominant insect in wheat and has now been verified in all Nebraska Panhandle counties as well as counties in southwest and south central Nebraska.

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Figure 1. Twospotted spider mites on a leaf and in a web. Often spider mites may be almost imperceptible on a leaf, but before more visible against their silk-like webs. (Photos by Jim Kalisch)
Figure 1. Twospotted spider mites. Almost microscopic in size, the spider mites may be imperceptible on a leaf, but becomes more visible against its silk-like webs. (Photos by Jim Kalisch)

Managing Spider Mites in Corn and Sobyean August 11, 2016

Recommendations for managing spider mites in corn and soybean, including treatment thresholds, insecticides as well as discussions on the potential impact of beneficial insects, diseases, and insecticide applications.

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