Robert Wright - Extension Entomologist

Robert Wright

(faculty)
Work ENTO 213
Lincoln NE 68583-0816
US
Work 402-472-2128 On-campus 2-2128

Faculty Bio

Twitter: @BobWrightUNL

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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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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Bt-Trait-Table-Partial-image

Handy Bt Trait Table Revised for 2017 January 19, 2017

The Handy Bt Trait Table for US corn production has been updated for 2017. It includes information on all registered Bt corn hybrids commercially available and summarizes which insects are controlled by which hybrids, which Bt and herbicide tolerance traits are expressed in different hybrids, and the Insect Resistance Management Refuge requirements associated with these hybrids.

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Proper cleaning and bin preparation will help assure that grain going into storage will remain in good condition.

Prepare Grain Bins and Equipment For Harvest August 31, 2016

Proper cleaning of all harvesting equipment and grain bins and preparation of bins is a key to preserving stored grain quality. See these recommendations and lists of commonly used products for treating bins.

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Soybean stem borer larva
Soybean stem borer larva

Soybean Stem Borers Feeding in South Central Nebraska August 16, 2016

We are starting to see dead leaves caused by feeding of soybean stem borer larvae in south central Nebraska soybeans. No control measures are appropriate at this time, but monitor your fields and be aware that high populations of soybean stem borers may predispose the field to lodging and make harvest difficult.

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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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Spider mite damage to soybean leaves.
Spider mite damage to soybean leaves.

Identifying Spider Mite Damage and the Species Responsible August 10, 2016

Two species of spider mites, the Banks grass mite and the twospotted spider mite, commonly feed on Nebraska corn. Banks grass mites (BGM) feed almost exclusively on grasses, including corn, small grains, and sorghum. Twospotted spider mites (TSM) not only feed on many species of grasses, but also on soybeans, fruit trees, and a variety of vegetables and ornamental plants.

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Adult differential grasshopper
Adult differential grasshopper

Watch For Grasshoppers in Crops August 9, 2016

Growers are reporting grasshoppers in field borders moving into crop fields in parts of Nebraska. Here are the insect treatments to help you determine treatment need.

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