Insect Management

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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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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Soybean aphid

Although at Low Levels, Soybean Aphids Are in Northeast Nebraska July 17, 2017

Soybean aphids are at low numbers in northeast, but these populations could quickly explode when temperatures drop. Farmers are encouraged to scout their fields and be prepared to treat if numbers reach the threshold.

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aphid speed scouting app

Soybean Aphid Scouting and Management July 17, 2017

The current economic threshold for soybean aphids is 250 aphids per plant with 80% of the plant infested and populations increasing. The article discusses the basis for this threshold and two scouting methods, including a speed scouting app, and management guidelines.

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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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Mosquito on skin
Figure 1. Manage mosquitoes to protect your health.

Manage Standing Water to Reduce Mosquito Disease Threat June 23, 2017

Managing the potential for mosquito breeding and populations on your farm can help protect you and your family from a number of diseases, including West Nile Virus. An entomologist offers information on mosquitoes and recommendations for reducing your risk.

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