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A soybean leaf infested with numerous soybean aphids.

Soybean Aphids Exceeding Thresholds in Some Parts of South Dakota

There have been a few fields this week that were infested with soybean aphids that are getting closer to threshold. We have also received reports of insecticides being applied to manage soybean aphids in South Dakota.

Multiple grasshoppers feeding on a corn ear.

Grasshopper Populations Continue to Cause Issues in South Dakota

Recent reports of crop loss along field edges indicate that grasshopper populations in some areas of South Dakota are well above threshold. Unfortunately, crops are often the target of these moving populations.

Combine harvesting wheat.

Weed Management After Wheat Harvest

Most of the winter wheat has been harvested in South Dakota and spring wheat harvest is underway. While the growing season is over for the wheat, post-harvest weed management is important to minimize the amount of weeds that are present in the spring

Rancher looking at cattle in a pasture
Nov 06

Sustaining the Legacy @ Rapid City

Join SDSU Extension and industry professionals for a three-day estate planning and farm succession conference on November 6, 13 and 20, 2025, at the SDSU Extension Rapid City Regional Center (711 North Creek Drive, Rapid City, SD 57703). Each day begins at 10:00 a.m. and concludes at 4:00 p.m.

Wheat plants infected with wheat streak mosaic virus.

Volunteer Wheat and Kochia Management With Herbicides Will Likely Require Two Passes

Wheat curl mites, which carry wheat streak mosaic virus, use volunteer wheat and grass weeds as secondary hosts to infest recently planted winter wheat crops. Therefore, effective management of these plants before winter wheat planting is critical.

Green wheat leaves with yellow streaks throughout.

Wheat Streak Mosaic Virus Complex: Breaking the Green Bridge

As wheat harvest proceeds, it won’t be long until winter wheat planting is underway in South Dakota. To effectively reduce wheat streak mosaic virus, it is important to manage the green bridge effect to slow spread of disease in newly emerging wheat fields.

Corn leaf samples with Southern Rust and Tar Spot.

Corn Diseases in South Dakota Update

Several South Dakota counties have confirmed positive cases of Southern Rust and Tar Spot this growing season. See our latest recommendations for dealing with these diseases before they become a problem.

Old barn and windmill with the sunset in the background
Dec 04

Sustaining the Legacy @ Winner

Join SDSU Extension and industry professionals for a three-day estate planning and farm succession conference on December 4, 11 and 18, 2025, at the SDSU Extension Winner Regional Center (325 S. Monroe St., Ste. 125, Winner, SD 57580). Each day begins at 10:00 a.m. and concludes at 4:00 p.m.

A green field bindweed with a white flower at top.

In a Bind With Field Bindweed?

It’s August and field bindweed, one of our most-persistent perennial weeds, is flowering. Although field bindweed is not statewide noxious, it’s locally noxious in Bennett, Bon Homme, Clarke, Lake, Stanley, and Yankton counties.

Three generations of a family looking out at a field
Jan 08

Sustaining the Legacy @ Mitchell

Join SDSU Extension and industry professionals for a three-day estate planning and farm succession conference on January 8, 15 and 22, 2026, at the SDSU Extension Mitchell Regional Center (1800 E Spruce, Mitchell, SD 57301). Each day begins at 10:00 a.m. and concludes at 4:00 p.m.