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All Wheat Content

Four photos depicting field progress for corn, winter wheat, oats and soybean as of July 10, 2020.

Follow the Fields Tour

Follow the field crops during the 2020 growing season.

aerial view of South Dakota farm and surrounding land

Pest & Crop Newsletter

SDSU Extension publishes the South Dakota Pest & Crop Newsletter to provide growers, producers, crop consultants, and others involved in crop production with timely news pertinent to management of pests, diseases, and weeds in South Dakota.

SDSU Extension Winter Wheat Variety trials. One plot is showing more yellowing and stress than other plots.
Jul 10

Plot Tours @ Crop Performance Testing Winter Wheat Trials

SDSU Extension will be hosting ‘open house’ tours for the Crop Performance Testing Winter Wheat Trials at various locations throughout the state.

Diseases on three different wheat plants. From the left: powdery mildew, fusarium head blight, and leaf rust.

Winter Wheat Diseases Update

Powdery mildew, fusarium head blight and leaf rust were observed in a few winter wheat fields recently scouted. The recent rainfall showers and warm temperatures have favored these diseases to develop in winter wheat.

Map of South Dakota showing Fusarium head blight risk. Green indicates low risk, yellow moderate risk, and red high risk. Most of the state is green except for scattered, yellow areas within Edmunds, Faulk, Hyde, Hand, Buffalo, Jerauld, Brule, Aurora, Turner, Lincoln, McCook, Lake, Brookings, and Kingsbury counties. Some red, high risk areas are in Buffalo, Brule, Hyde, and Minnehaha counties.

Fusarium Head Blight Predicted Risk for Spring Wheat

Most of the spring wheat is at or will soon be at flowering. One disease that can develop in wheat at this growth stage is fusarium head blight (FHB or scab).

Dark colored caterpillar feeding on wheat head.

Scout for True Armyworms in Oats and Wheat

During most years, we start worrying about true armyworm activity in wheat fields in mid-July. However, the strong southerly winds that we experienced during the last two weeks pushed several insect pests north ahead of their normal schedule

Several wrapped bales of hay lined up near a barn.

Round Bale Storage Conservation

Fact sheet discussing conservation of round bale storage.

Left: Brown moth with light markings present on a green leaf. Right: Brown moth with light markings present.

Army Cutworm Moths Among the Recently Reported Western Bean Cutworm Moths

Last week, we published an article about the presence of western bean cutworm moths being very abundant throughout Central and Western South Dakota. However, when talking with an entomologist from a neighboring state, they suggested the moths could also be army cutworm moths.

Yellow and brown streaks on a winter wheat leaf indicative of bacterial leaf streak symptoms.

Bacterial Leaf Streak Developing at Low Level in Winter Wheat

A few winter wheat fields were found with bacterial leaf streak starting to develop at low levels. Bacterial leaf streak is usually observed starting from flag leaf growth stage. It can be severe on the upper leaves when there is prolonged leaf wetness resulting from frequent rains.

Green, teardrop shaped insects on a green leaf that has dark spots. Courtesy: Alton N. Spark Jr., University of Georgia,

Low-Level Aphid Populations Present in Wheat

Reports of aphid populations in wheat fields have been slowly increasing in the past week. Most of these populations are well below the economic threshold, but there is a potential for them to increase.