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a field with plots of soybeans

SDSU Extension’s Soybean Week Dives into Pest Management, Soil Health and 2021 Outlook

January 07, 2021

Want to know more about weed control, research, planting dates, and fungicide? Join us on January 19 - 22.

green plant growing in a field with small grains growing on the ends

Proso Millet Trial Results

In 2020, proso millet trials were conducted in 1 location in South Dakota.

Two rows of corn at V5 leaf growth stage looking down from above. Between the corn rows there are 3 separate cotton strips placed on the soil surface just before burial in a 2-inch-deep trench. The cotton strips are numbered for their identification after recovery at three different dates.

Cotton Strip Soil Test: Rapid Assessment of Soil Microbial Activity and Diversity in the Field

Soil has always been considered as a living system due to its biological components: fungi, bacteria and plant roots. Under several ongoing research projects, we started researching how we can use ‘cotton strip assay’ to compare different cover crop mixes to optimize field soil activity and build up better soil health.

Earthworms on the soil surface inside a white hard-plastic ring, after mustard-vinegar solution was drained down through the soil profile forcing earthworms out onto the surface in order to be counted.

How’s Life in the Soil? Ask (Count) the Earthworms.

Earthworms are ‘very special’ creatures on earth, and their contribution in soil nutrient cycling and fertility management has been acknowledged from the beginning of agriculture. So, the question needs to be asked, how can we help improve earthworm populations?

a strand of oats in a field

2020 Plant Disease Summaries for Small Grains

A number of field trials were implemented in the 2020 growing season with the general objective of assessing various disease management practices suitable for South Dakota growers and the Great Plains.

Field with purple flax flowers

Herbicide Residual Effects on Cover Crops after Wheat

Fact sheet about herbicide residual effect on cover crops after wheat.

Winter wheat emerging from a dry stand in early spring.

Assessing Winter Wheat Stand In the Spring

Overwintering of winter wheat starts in the late fall and is completed during spring regrowth. Factors, such as genetics, amount of snow cover and winter temperatures, can all play a significant role in winter survival of wheat crops.

Top: Army cutworm caterpillar. Bottom: Pale western cutworm caterpillar.

Monitor Wheat for Early-Season Cutworm Activity

It's finally warming up in South Dakota, and insect activity in wheat fields will be increasing. For wheat, a couple of early-season pests that may already be active are the army cutworm and the pale western cutworm.

Grain bin fan with a plywood cover installed on the exterior.

Check Your Bins This Spring

As it warms up this spring, don’t forget to check the bins. Grain bins work as solar heat collectors, and the grain inside of them may be much warmer than expected.

A farmer watching the sun rise in a bare, unplanted field.

Crop Tolerance to Soil Herbicide Residual

Some herbicides can persist in soil, especially dry soil. Herbicide carryover could be an issue in 2021 across the state depending upon last year’s moisture levels and field conditions.