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A green Palmer amaranth weed surrounded by various other green plants.

Palmer Amaranth Confirmed in Turner County: Is this weed in your fields?

Palmer amaranth has recently been confirmed in Turner County. Currently, the estimation of Palmer amaranth infestations has been confirmed in 18 counties across South Dakota

Hand folding back a soybean leaf revealing several soybean aphids.

Should I Spray for Soybean Aphids at the End of August?

Soybean aphid populations are persisting in many soybean fields throughout eastern South Dakota. In many cases, these soybean aphid populations are either at the 250 aphids per plant threshold, or very close.

Floating row covers set up over rows of specialty crops.

Season Extension for Fall Specialty Crops

Extending crop production into the fall allows growers to take advantage of cooler temperatures and enjoy fresh, cool-season vegetables later in the year.

Two white flowers with green leaves. The first flower has an abnormal fused bloom.

Fasciation: What’s going on with my plant?

Fasciation is a malformation of plant parts commonly manifested as enlargement, flattening or cojoining. The abnormal growth of plants can be uniquely puzzling and beautiful at the same time.

USDA agent and producer reviewing paperwork at a desk.

An Analysis of Margin Protection Crop Insurance on Corn and Soybeans in South Dakota

Margin protection crop insurance, an endorsement/policy that insures producers against rising input costs, is growing in popularity in South Dakota. Recent research investigated how South Dakota margin protection payouts compared to our neighboring states.

Green and brown grasshopper with two yellow lines that originate on the head and meet on the abdomen.

Monitor Emerging Winter Wheat for Grasshopper Populations

Large grasshopper populations have been observed in many areas of South Dakota. It is important to scout winter wheat fields for grasshoppers before and after planting, especially in areas where large populations have been identified.

Narcissus spp. bulb with green shoots emerging from bare soil.

Warm Winter Temperature Impacts on Flowering Bulbs

Warm winters underscore the importance of temperature in regulating bulb growth, as the right sequence of warm and cold periods is critical for healthy shoots and properly formed flowers.

Rows of sweet corn growing among clover mulch in a research plot.

Organic Sweet Corn Production in Clover Living Mulch Systems: 2-Year Research Summary

Research in 2024 and 2025 in a USDA certified organic field at the SDSU Southeast Research Farm explored growing sweet corn in three types of clover grown as a living mulch.

Color-coded map of South Dakota map of South Dakota showing corn yield by county. For a detailed description, please call SDSU Extension at 605-688-4792.

Statewide Corn Production and County-Level Yield Variation in South Dakota

South Dakota’s corn production has experienced significant increase in both planted acres and production over the past decade.

Greenhouse bench containing plants in potted substrate exhibiting death (brown plants) and survival (green plants) after herbicide treatment.

SDSU Research Update on Herbicide Resistance Screening

SDSU Extension's herbicide resistance screening has been gathering valuable information on regional resistance patterns across South Dakota. Results will help guide herbicide selection, tank-mix strategies, and resistance management programs for growers.