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Purple-brown caterpillar with orange head on a green corn leaf.

Common Stalk Borer Activity Estimate: May 20, 2021

Warmer weather is finally here. Although we have accumulated quite a few degree days for common stalk borers, nowhere in the state has reached accumulation levels for common stalk borer caterpillar movement into corn fields.

White butterfly with black markings on wings, resting on a green leaf.

Cabbage White Butterflies Are Here!

Keep an eye out for cabbage white butterflies in your garden. These butterflies lay eggs on the underside of the vegetable leaves. Once the eggs hatch, their caterpillars feed on cabbage, broccoli, Brussel sprouts, cauliflower, kale, turnips and radishes.

Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: May 20, 2021

Seedcorn maggots can be an early-season pest of corn and soybean in South Dakota, typically affecting crops that are emerging or have recently emerged. Seedcorn maggots can cause direct loss by destroying planted seeds.

Yellow wireworm on an orange sweet potato.

Wireworms in the Garden

With warming soil temperatures, overwintering wireworms have become active throughout South Dakota. Wireworms are soil-dwelling insects that can be pests of germinating seeds, seedlings and root crops.

Color-coded map of South Dakota’s plant hardiness zones.

2023 USDA Plant Hardiness Zones

Winter and spring are a great time for planning new garden and landscape designs. Learn how recent updates to the USDA Plant Hardiness Zones may have South Dakota gardeners feeling extra adventurous when selecting new plants for their gardens this season!

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?

Row of beets growing in a garden.

Beets: How to Grow It

Beets are commonly grown for their bulbous roots, but their tops can also be harvested for greens, and they are an excellent source of Vitamin A as well as calcium. They grow best in the cooler temperatures of spring or fall.

Zucchini ready to harvest. Courtesy: Mary Roduner

Summer Squash: How to Grow It

There are many types of summer squash, including the familiar zucchini (which can be green, green-striped, or yellow), crookneck, straightneck, patty pan and more.

A colorful variety of freshly, harvested bell peppers.

Peppers: How to Grow It

Peppers are heat-loving vegetables that require a long, frost-free season and full sun. Peppers can be sweet or hot, and range in color from green, yellow, orange, red and purple to brown.