Insect Management

Painted lady butterfly and caterpillar

Large Populations of Painted Lady Butterflies January 8, 2018

In 2017 large populations of painted lady butterflies were seen across the state, raising concerns about whether the larvae form (thistle caterpillars) of this insect would cause damage to soybean fields. An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics.

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Painted lady caterpillar

Northeast Nebraska Insect Pest Update January 8, 2018

Part of the 2018 Crop Production Clinic Proceedings, this article reviews insects to expect in northeast Nebraska crops and links to resources on management.

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Dectes stem borer
Figure 1. Dectes stem borer in soybean (Photos by Kyle Broderick)

Check for Dectes Stem Borer Damage in Soybeans October 27, 2017

The dectes stem borer has been expanding its range in Nebraska and university entomologists are now receiving damage reports from eastern Nebraska.

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Fall armyworm
Fall armyworm

Which Bt Traits Do You Need to Purchase? October 12, 2017

When it comes to buying corn seed, avoid investing in GMO insect protection you don't need. This guide looks at available traits and which proteins are effective on which pest species to help growers select the product best suited to their fields.

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Map of counties reporting the sugarcane aphid
Figure 1. US counties where the sugarcane aphid has been confirmed. (Source: https://www.myFields.info)

Sugarcane Aphid in Nebraska September 28, 2017

The sugarcane aphid has been detected in a Nebraska grain sorghum field near Pawnee City, according to the Nebraska Grain Sorghum Board. This is the first time this pest has been reported on Nebraska sorghum.

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Figure 1. Counties with confirmed sugarcane aphids. Sorghum growers in southeast Nebraska are encouraged to scout for this pest.
Figure 1. Counties with confirmed sugarcane aphids. Sorghum growers in southeast Nebraska are encouraged to scout for this pest. (Source: http://www.myfields.info)
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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