Justin McMechan - Crop Protection and Cropping Systems Specialist

Soybean plant infested with orange gall midge.
Figure 1. Soybean plant infested with orange gall midge.

Survey of Orange Gall Midge in Nebraska: A Potential Pest of Soybeans August 23, 2018

A relatively new insect in soybean, the orange gall midge has now been confirmed in 15 eastern Nebraska counties.Growers and consultants are invited to submit reports of orange gall midge in counties where it hasn't previously been identified.

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Soybean stem borer

Scouting for Soybean Stem Borer Damage August 9, 2018

High populations of soybean stem borers may predispose your field to lodging and complicate harvest. Fields with higher levels of injury should be harvested first to minimize lodging losses.

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Soybean plants showing wilting and necrosis
Figure 1. Soybean plants exhibiting signs of wilting (A) and necrosis (B) in fields in eastern Nebraska.

Orange Gall Midge in Soybeans August 1, 2018

Reports of orange gall midge in soybean increased in Nebraska this year and researchers have initiated in-field and laboratory studies to help learn more about its potential to reduce yield as well as best practices for its management.

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A guide to estimating soybean leaf defoliation damage

Soybean Defoliators August 1, 2018

Defoliation injury is being reported in soybeans and often can look worse than it is. This illustrated guide to assessing injury can help you get reliable scouting numbers on which to base sound treatment decisions.

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Western corn rootworm beetles feeding on a corn leaf
Figure 1. Damage to corn leaf caused by western corn rootworn. (Photo by Robert Wright)

Western Corn Rootworm Beetles Emerging, Time to Scout June 27, 2018

Corn rootworm beetles started emerging in southeast and south central Nebraska and scouting is recommended. An average of 5-10 beetles per ear usually can seriously affect pollination.

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Figure 1. Japanese beetles will first feed on the leaves of soybean (left) or corn. In corn they'll move to the silks (right) when they become available. (Photos by Justin McMechan)
Figure 1. Japanese beetles will first feed on the leaves of soybean (left) and corn. In corn they'll move to the silks (right) when they become available. (Photos by Justin McMechan)

Scout Corn and Soybean for Japanese Beetles June 25, 2018

Japanese beetles are emerging in eastern Nebraska and will continue to emerge for the next couple of weeks. As numbers will be highest in field margins, growers are advised to scout across the whole field before determining the need for treatment.

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Western bean cutworm moth
Western bean cutworm moth

Using Degree-Day Models to Predict Western Bean Cutworm Flights June 21, 2018

By using a degree-day model, growers can account for the effect of temperature on insect development and approximate when certain insect stages will occur. See predicted cutworm flights and recommended scouting periods for 14 Nebraska locations.

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Hailed corn

Mid-Season Hail Damage Assessments in Corn and Soybeans June 21, 2018

When severe storms and hail hit your corn and soybean fields, it's important to estimate yield losses to determine the need for future inputs and alternative management strategies. This guide offers steps to evaluate mid-season hail damage and estimate potential yield losses.

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