Justin McMechan - Crop Protection and Cropping Systems Specialist

Western corn rootworm beetle feeding on a leaf of corn

Western Corn Rootworm Beetles Emerging, Time to Scout

July 7, 2020
Western corn rootworm beetles began emerging in southeast and south central Nebraska at the end of June. Beetles emerge somewhat later in northeastern and western Nebraska.

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Japanese beetle

Japanese Beetles Emerging; Scout Corn and Soybean Fields

June 23, 2020
Japanese beetle adults are beginning to emerge in eastern Nebraska corn and soybeans, as well as landscape trees and shrubs. They will continue to emerge for the next few weeks. This story includes a guide for estimating total defoliation from multiple insects to determine need for treatment in soybean.

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Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well
Figure 1. The wheat-mite-virus complex has extreme potential to impact yield the following year if high risk volunteer wheat situations are not managed well. (Photo by Gary Hein)

Why Control of Volunteer Wheat is Critical to Protecting Next Season's Yields

June 23, 2020
Volunteer wheat can provide the summer "green bridge" for the disease wheat streak mosaic and other virus diseases. This almost always occurs as a result of wheat seed shattered from heads during hail storms.

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soybean gall midge adult

First Emergence of Soybean Gall Midge in Cass County, Nebraska

June 11, 2020
On June 10th, 2020 three soybean gall midge adults were collected south of Louisville, Nebraska. This was the only site in the network with soybean gall midge adult activity.

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soybean gall midge larva

2020 Soybean Gall Midge Alert Network

May 20, 2020
In 2019, an alert network was established to monitor soybean gall midge adult emergence using cages across 27 sites in four states. Growers and consultants can sign up to receive emergence information alerts to aid in the timing of insecticide applications.

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Seed corn maggots
Seed corn maggots

Avoiding Injury from Seed Corn Maggot

May 20, 2020
We have received several reports of injury from seed corn maggot that has reduced stands of Nebraska soybeans. Learn why they may have been more problematic this year.

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barbel ear and short husk deformations in corn

Planting Date Impact on Corn Growth and Ear Issues

May 14, 2020
Despite the above-average yields in recent years, there has been reports of ear formation issues in corn that ranged from sites in the Texas Panhandle, Colorado, Nebraska, Iowa, and Illinois. Does planting date play a role?

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cutworm caterpillar

Scout Emerging Corn for Insects; Don’t Assume Protection

May 13, 2020
As corn begins to emerge, be alert to the potential for damage from early season insects such as cutworms, wireworms, white grubs, or other insects.

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