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Forage

All Forage Content
Yellow wheat field with green weeds throughout.

Weed Control Field Test Data

Data books to use as a reference to select appropriate herbicide(s) for row crops

oats

Cover Crops

The benefits of planting cover crops are numerous. 

Plastic bag containing numerous green larvae.

Learn about alfalfa weevil at Northern Plains Forage Association annual meeting

November 17, 2025

South Dakota State University Extension encourages producers to attend the Northern Plains Forage Association annual meeting and seminars, which will feature forage-related education and research.

Yellow toadflax plants flowering in a grassy area beside a field.

Yellow Toadflax Has Begun Producing Seeds: Scout before treating infested areas

Yellow toadflax is a perennial weed that infests pasture and rangeland across South Dakota. This year, with an abundance of heat and moisture, plants flowered in early August and now have started to produce seeds.

Cow grazing on sudangrass.

SDSU Extension welcomes new crop and livestock field specialist

September 12, 2025

South Dakota State University Extension is pleased to welcome Parker Witt as a new Crop and Livestock Field Specialist.

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.

True armyworm caterpillar on a corn leaf.

Reports of Pyrethroid Failures for True Armyworm Caterpillar Management

True armyworm caterpillars reached thresholds in oats and wheat in many areas of South Dakota recently. Management efforts to reduce populations had varying levels of success, with SDSU Extension receiving numerous reports of pyrethroid insecticide failures.

Green Canada thistle with whitened leaves at the top. Various green plants throughout.

White Thistle Disease: Biological management at work

White thistle disease can be seen among many Canada thistle plants throughout South Dakota this growing season. Plants infected with the disease exhibit significant reductions in both growth and seed head compared with non-infected plants.

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.

Hail-damaged soybean field with storm clouds in the background.

Making Decisions With Hail-Damaged Row Crops

Late-season hail damage can leave growers wondering what to do next. Before deciding what to do with your hail-damaged fields, take some time to consider a variety of management options.