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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.

A photo of a winter grazing pasture with a variety of grasses, shrubs and forbs that was taken at the SDSU Cottonwood Field Station that contains some field pennycress.

2025 Field Pennycress Management Considerations

Field pennycress prevalence on pastures has been observed to be in higher abundance this year in Western South Dakota. When consumed in certain quantities it can be toxic to livestock.

Vegetables are displayed, including zucchini, potatoes and radishes

SDSU Extension to host weed management tour at Sisseton farm

July 30, 2025

South Dakota State University Extension is pleased to announce a field tour featuring Koeppe Family Fields on Aug. 5, 2025.

Bergamot flower in a field being pollinated by a honey bee

Managing Forests for Pollinators

Fact sheet on the importance of managing Black Hills forests for pollinators.

A field of no-till soybeans and corn.

SDSU Extension Tile Drainage Economics Calculator

Calculator for farmers who are interested in evaluating the decision to install tile drainage from an economic perspective.

United States Environmental Protection Agency Sign plate outside the agency’s main office.

EPA Proposes a Decision to Approve Registration for Dicamba Labeling to Be Applied to Tolerant Soybean

Dicamba products previously labeled for overtop application to tolerant soybean are not registered for use during the 2025 growing season. However, the EPA has proposed to re-register these dicamba products for use in tolerant soybean starting in 2026.

Corn leaf with trace amounts of tar spot.

Tar Spot Confirmed in South Dakota

Trace amounts of tar spot were recently found in Yankton and Bon Homme counties and are thought to have originated from corn residue instead of windblown spores. This speaks to the importance of crop rotation in the management of this disease.

Green corn leaf with yellow rust-colored spots throughout.

Southern Rust Observed in South Dakota Corn Fields

Southern Rust was recently confirmed in South Dakota corn fields. Yield impacts from Southern Rust can be high, so scouting for the disease is highly encouraged to determine if it is present.

Gray beetle on a green alfalfa plant with purple flowers.

Watch for Blister Beetles in Later Alfalfa Cuttings

The frequent rain events experienced this summer has helped boost forage production. Although this is great for growers, the possibility of encountering blister beetles at harvest increases later in the summer.

Two pictures of green soybeans with a blue sky in the background.

Strong, Effective Herbicide Programs Can Be Complimented With Narrow Row Spacing

While strong herbicide programs will result in effective weed management, a cultural tactic, such as row spacing can result in a complementary increase in effectiveness.