Adam Varenhorst

Assistant Professor & SDSU Extension Field Crop Entomologist

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605-688-6854

Berg Agricultural Hall 308
Agronomy, Horticulture & Plant Science-2207A
University Station
Brookings, SD 57007

As the SDSU Extension Field Crop Entomologist I serve South Dakota stakeholders by addressing insect pest issues in field crops. I conduct applied research that focuses on corn, soybean, wheat and sunflower. I also assist the other extension entomologists to address questions pertaining to insect questions for the home and garden, urban insect pests and general entomology questions.

Also by Adam Varenhorst

sun rising over South Dakota field

South Dakota Pest Management Guides

The South Dakota Pest Management guides are now available for free. The guides offer recommendations for controlling weeds, insects, and diseases in a variety of South Dakota crops.

Oilseed, Corn, Wheat, Soybean, Sunflower, Crop Management, Crop Treatments, Forage

two black beetles rolling a ball of dung

An identification guide to common Dung Beetles of South Dakota

A guide of common dung beetles of South Dakota.

Range, Grassland, Soil Health, Forage, Beef Cattle, Wildlife, Conservation, Pasture

Black beetles with heads as wide as thorax on brown soybean pods.

Broad-Headed Bugs in Soybean: Should You Be Worried?

This week we received a report of insects infesting a soybean field. However, they weren’t insects that we generally think of when the term "soybean insect pests" comes up.

Soybean, Crop Management, Crop Treatments

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