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Adam Varenhorst

Associate Professor & SDSU Extension Field Crop Entomologist

605-688-6854

Berg Agricultural Hall 226
Box 2100A
Brookings, SD 57007

As the SDSU Extension Field Crop Entomologist Adam serves South Dakota stakeholders by addressing insect pest issues in field crops. He conducts applied research that focuses on corn, soybean, wheat and sunflower. Additionally, he assists the other extension entomologists to address questions pertaining to insect questions for the home and garden, urban insect pests and general entomology questions.

State & Regional Offices

SDSU Campus

Also by Adam Varenhorst

Dark green and tan curled caterpillars with an orange stripe along their sides.

True Armyworm Caterpillars Spotted in South Daktoa Wheat

This past week we received reports and observed true armyworm caterpillars in winter wheat and other small grains. These pests will likely feed for another week or so and can cause defoliation injury.

Aerial view of test plots at the Volga Research Farm.
Jul 23

Integrated Pest Management (IPM) Field School

SDSU Extension will host a free Integrated Pest Management (IPM) Field School on Tuesday, July 23, 2024, from 9:00 a.m. - 4:00 p.m. CDT at the SDSU Volga Research Farm (21200-, 21298 464th Ave., Volga, SD 57071). The farm is located about 2 miles south of Volga.

Yellow and black beetle on green soybean leaf.

Bean Leaf Beetles Are Active in South Dakota

It’s important to remember early season scouting for bean leaf beetle defoliation. At this time, overwintering bean leaf beetles reach the adult life stage, and they emerge in with an appetite.