Insect Management

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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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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