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

Painted lady butterfly by Jim Kalisch

Large Populations of Painted Lady Butterflies August 8, 2017

Reports of painted lady butterflys have been numerous in rural areas, including in soybeans, causing growers to ask if there's likely to be an increase in their soybean leaf-eating caterpillars. Entomologists discuss this question and the insect's life cycle, and offer a "how-to" on estimating leaf defoliation.

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Stem borer in soybean

Check Soybean Fields for Evidence of Soybean Stem Borer August 7, 2017

Dropped leaves in soybean fields indicate soybean stem borers are feeding and causing leaf damage. These insects are expanding their range as a pest of soybeans in Nebraska and now can be found in several counties north of I-80.

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Guide to estimating soybean leaf defoliation

Estimating Soybean Leaf Defoliation July 26, 2017

Growers are reporting finding painted lady caterpillars and silver spotted skipper caterpillars in soybeans. This guide can help estimate leaf defoliation in soybean, key to determining whether treatment is necessary.

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Western corn rootworm beetle

Scout Now for Corn Rootworm Beetles to Assess Potential Risk of Future Damage July 19, 2017

Western corn rootworm beetles have started emerging in southeastern and south central Nebraska and weekly scouting is recommended to help determine the need for rootworm control next year. Beetle emergence and scouting is slight delayed for growers in northeast Nebraska.

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western bean cutworm eggs and larvae

Scouting and Treatment Recommendations for Western Bean Cutworm July 11, 2017

Scouting is urged for Western bean cutworm in corn as moth flights are active and particularly heavy in south central Nebraska this week. This article includes trapping reports and recommendations for scouting and treatment.

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Damage to corn leaf by western corn rootworm
Figure 1. Damage to corn leaf caused by western corn rootworn. (Photo by Robert Wright)

Time to Scout for Western Corn Rootworm Beetles June 29, 2017

Western corn rootworm beetles began emerging in southeast and south central Nebraska this week. Before corn silks emerge, they're apt to feed by scraping the surface tissue, leaving a white parchment-like appearance.

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Wheat stem maggot fly

Adult Emergence of Suspected Wheat Stem Maggot from Infested Corn Plants June 22, 2017

University researchers are studying why suspected wheat stem sawflies are being found again this year in Nebraska corn, previously thought to be a non-host. Major yield loss is not expected in corn from this pest.

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Differential grasshopper

They're Back ... Time to Scout Field Borders for Grasshoppers June 22, 2017

Populations of immature grasshoppers have been reported in areas bordering crop fields. If you're seeing one of the four species that harm cropland noted here, control may be warranted. Treatment is most effective when grasshoppers are small and still contained in field borders.

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