Soybean Insects

Wooly Bear
Photo credit; UNL Entomology

Woolly Bears in Late Maturing Soybean Fields

September 24, 2020
High numbers of woolly bear caterpillars are reported in some soybean fields in south central Nebraska. Pay particular attention to late maturing soybean fields. These act as a magnet for woolly bear caterpillars and many other insects.

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Spider mite damage to soybean leaves.
Spider mite damage to soybean leaves.

Identifying Spider Mite Damage and the Species Responsible

July 22, 2020
We are starting to get more reports of spider mites damaging corn and soybeans in Nebraska. Because many other things can cause similar discoloration, it is important to check leaves closely to make sure mites are actually causing the damage.

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Soybean aphid

Although at Low Levels, Soybean Aphids Are in Northeast Nebraska

July 15, 2020
The infestations appear to have occurred recently, as the aphids were only observed on leaves that had not yet expanded completely. The economic threshold for late vegetative through R5 stage soybeans is 250 aphids per plant with 80% of the plants infested and populations increasing.

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aphid speed scouting app

Soybean Aphid Scouting and Management

July 15, 2020
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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ECB adult female

Light Trap Data Available Online

June 18, 2020
UNL Extension Entomology is monitoring crop insect pests (primarily moths) using black light traps at university facilities at North Platte, Clay Center, Mead, and Concord.

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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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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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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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