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A green absinth wormwood plant surrounded by other green vegetation.

Absinth Wormwood Spray Window Passed: Mow now and plan to treat the regrowth in the fall

Absinth wormwood is a statewide noxious weed that inhabits cropland, pasture, rangeland, right-of-ways, and waste sites. If not effectively managed, the species can displace desirable vegetation, reduce crop yield and decrease land value.

U.S. Environmental Protection Agency offices in Washington, D.C.

Update on Chlorpyrifos Use in South Dakota

As of June 30, 2025, the labeled uses for chlorpyrifos products for food and feed are limited to alfalfa, soybean, and wheat in South Dakota. Chlorpyrifos can no longer be used to treat sunflowers.

Many green soybean plants within a field that has brown grass and residute.

Burnt Soybeans Look a Lot Better Than Weedy Beans!

Prior to the introduction of Roundup-Ready soybean, growers were accustomed to soybeans exhibiting short-lived herbicide injury. While soybean plants may look unsightly from a PPO-inhibiting herbicide application, a more unsightly view is a soybean field full of weeds.

A sign directs drivers to an SDSU Extension field day

SDSU Extension hosts 5th annual Specialty Crop Field Day

July 24, 2025

South Dakota State University Extension is pleased to announce its fifth annual Specialty Crop Field Day at the SDSU campus in Brookings.

Producer holding soil in cupped hands over a bare field in early spring.

SDSU Extension 2024 Impact Report

This brief report highlights how SDSU Extension strengthens people and places across South Dakota through every program, contact, volunteer hour and digital outreach effort.

Crop field with various areas highlighted to show variations in crop performance.

Variations in a Field and Variable Rate Technology Adoption

Field variations, including soil properties, nutrient content, and moisture levels, can significantly impact crop yield and farm profits. By understanding the specific needs of different areas, farmers can apply fertilizers, seeds, and other inputs more effectively.

Tree lined hiking trail at Cathedral Spires

Limber Pines of the Cathedral Spires: A Unique Tree

Fact sheet on the history, status and threats of limber pines.

Young tomato plants surrounded by organic mulch in a no-till garden.

Microbial Water Testing for South Dakota Producers

Microbial water testing is important for produce growers to know the quality of their water to help ensure the safety of the fruits, vegetables, and herbs they produce.

Field showing sheet and rill erosion following a heavy rain event.

Soil Erosion Mitigation During Heavy Rainfall Events

Adopting soil health practices that minimize disturbance, increase surface cover and organic matter content, and keep roots growing in the soil can help to increase soil infiltration rates and reduce destruction of soil aggregates from heavy rain.

Leaf with noticeable powdery mildew symptoms.

Powdery Mildew Presence in Your Garden: How to identify and prevent it

Powdery mildew is a common fungal disease that targets a wide range of hosts. It is important to identify its presence as soon as possible to slow its spread and prevent irreversible damage.