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Small Grains

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A field of green winter wheat.

Winter Wheat Variety Trial Results

The Winter Wheat Variety Trial Results are crop performance testing data from various locations across South Dakota.

People eat ice cream under a large tent
Aug 18

Dakotafest

Stop by the SDSU Extension booth at Dakotafest to meet specialists, ask questions, get recommendations and learn about programming and events.

Three wheat fields exhibiting wheat streak mosaic virus symptoms throughout.

South Dakota Wheat Streak Mosaic Virus Disease: 2026 Update

Wheat streak mosaic virus is on the move across South Dakota wheat fields. Due to the mild winter and overwintering in winter wheat, viral activity has had a jump start in 2026, and the occurrence and intensity of disease pressure is comparable to the 2025 season.

Bird cherry oat aphids, English grain aphids, Greenbugs.

Aphid Populations Detected in Wheat

Aphids are present in South Dakota wheat fields, and that means it’s time to start scouting.

Color-coded map of South Dakota showing Fusarium head blight risk throughout the state. For a detailed description, please call SDSU Extension at 605-688-4792.

Tools Available for Fusarium Head Blight Prediction

Fusarium Head Blight (FHB), commonly known as scab, is a major disease threat for wheat each year during the flowering growth stage. To support growers in making informed fungicide decisions, forecasting tools are available that use weather data to estimate the likelihood of scab development.

Wheat field that is turning yellow due to mite infestation.

Brown Wheat Mites Detected in South Dakota Wheat

Brown wheat mite infestations have been detected in South Dakota wheat. Typically, infestations are more commonly observed in fields experiencing drought stress, which is currently most of the state

Green wheat plants with some cut just above the soil surface.

Army Cutworms Causing Issues in South Dakota Wheat

Army cutworm caterpillars are active in South Dakota wheat fields. This activity is only going to increase with the forecasted temperatures.

Wheat plants in a field showing viral symptomology of Wheat Streak Mosaic Virus.

Wheat Streak Mosaic Virus Confirmed in 2026

At the end of April, a winter wheat sample was submitted to the Plant Diagnostic Clinic displaying typical viral symptoms of chlorosis and streaking. Upon testing, this sample was determined to be positive for Wheat Streak Mosaic Virus.

A sprawling sorghum field ready for harvest

Sorghum Weed Control

Early competition, especially from grass, is critical for successfully controlling weeds in sorghum. There are preemergence as well as postemergence herbicides available for this crop. Early treatment provides the best control of broadleaved weeds with crop stage also being a critical factor for some postemergence treatments.

Wheat growing in a field with rain clouds in the distance.

Optimizing Wheat Success for 2026

Whether it be winter wheat or spring wheat, there are many things to consider to help improve the health and success of these crops in the upcoming growing season.