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Two beetles. From left: Yellow beetle with a black head and three distinct black stripes on the back. Yellow beetle with a black head and twelve black spots on the back.

Start Scouting for Striped Cucumber Beetles

Striped cucumber beetles are showing up in gardens across South Dakota. If large populations are present in a garden, they can cause severe injury to squash, cucumbers, melons and other cucurbits if left unmanaged.

Cover crops emerging from a no-till field.

Do Cover Crops and Grazing Harm Soil Properties?

Fact sheet for a study that was conducted to compare short and long-term animal grazing on soil health and water properties at four locations in SD.

Three photos: Man mowing lawn, crab grass growing on lawn, sprinkler watering lawn.

Summer Lawn Care: Mowing, Weed Control and Watering Practices

During a summer of drought, the extreme heat, lack of rainfall and invasion of pests can really take a toll on our turf. Learn some general concepts of summer lawn care and techniques to help your lawn through difficult summer months.

Eight green beetles in the top portion of the image and seven yellow beetles with varying black stripes in the bottom portion of the image.

Corn Rootworm Adults Are Active in South Dakota

We have been observing a lot of corn rootworm adults in South Dakota. The emergence of these primarily underground pests can provide insight into field population levels and the potential for future root injury.

Small, green teardrop shaped insects on a green, soybean stem with pink flower.

Soybean Aphids Spotted in South Dakota

Soybean aphid populations have been observed in South Dakota. Although these populations are still very small, it is a good reminder that soybean aphid scouting should occur throughout the growing season to prevent population outbreaks and yield loss.

Green caterpillar with a dark brown head.

Obliquebanded Leafrollers Active in South Dakota Soybean

If you’ve observed rolled soybean leaves that are held together by webbing, don’t immediately think thistle caterpillar. The obliquebanded leafroller caterpillar will roll soybean leaves and hold the leaf in place with silken webbing.

Green soybean leaf with small holes near the center and edges.

Redheaded Flea Beetles Active in Soybean

Redheaded flea beetles are active in soybean. Although they haven’t caused significant defoliation yet, their activity should be monitored.

Corn plant with yellowing leaf edges due to potassium deficiency.

Corn Potassium and Drought

For many crop producers, potassium deficiency has become an increased concern, and this year’s drought conditions have resulted in potassium deficiency symptoms showing up in fields where it would normally not occur.

a man posing for a headshot in a dark suit and tie

SDSU Welcomes Ali Nafchi to Precision Agriculture Team

July 09, 2021

The South Dakota State University Department of Agronomy, Horticulture and Plant Science, along with SDSU Extension, has named Dr. Ali M. Nafchi to serve as an Assistant Professor and Extension Specialist in Precision Agriculture.

Caterpillar with a red stripe on its back sitting on a green leaf. Bottom: Mottled gray caterpillar sitting on a green leaf.

Cutworms in Sunflowers

In South Dakota, some late-planted sunflower fields are having some cutworm pressure. Although most cutworm activity should be wrapped up by now, it is possible that some populations may have been feeding up until the beginning of July.