Content by Philip Rozeboom

Image of western South Dakota where green triangles indicate areas with low grasshopper populations, orange squares indicate medium grasshopper populations, and red circles indicate high grasshopper populations that exceeded thresholds.

2019 South Dakota Grasshopper Forecast

The USDA Animal Plant Health Inspection Service conducts an annual survey to monitor grasshopper populations in Western South Dakota. In 2018, SDSU conducted a survey to monitor populations in Eastern South Dakota. These previous-year surveys can be used as a prediction tool for where grasshoppers may be an issue during the upcoming season.

Magnified image of a springtail that is hairy and dark blue in color.

What are those black bugs jumping on the snow?

One of the first critters you may notice in early spring or even late winter are snow fleas. These tiny arthropods can be an odd sight when they appear by the hundreds on top of snow drifts that are melting on warm, sunny days.

Black hairy caterpillar with a dark brown band in the middle of its body. The caterpillar is crawling on grey cement with visible pebbles present in the substrate.

Are those woolly bear caterpillars I see crawling?

Anyone that spent the weekend outdoors may have observed flies, wasps, bees, and others flying around for the first time this year. One of these insects is a familiar one, the woolly bear caterpillar.

Green soybean plant with epidermis peeled back revealing numerous orange larvae

Soybean Gall Midge: What We Know So Far

In 2018, South Dakota soybean farmers were faced with a new soybean insect pest. What started with dying field borders ultimately ended with yield losses throughout many fields on the Eastern side of the state. We determined that the pest in question was the soybean gall midge.

Man wearing a long-sleeved shirt and waterproof gloves loading pesticide-contaminated clothing into a washer. Courtesy: NDSU Extension

How to Properly Launder Insecticide-Contaminated Clothes

It is important to prevent insecticide exposure from occurring when laundering contaminated or potentially contaminated clothing.

New Multi-State Extension Publication: Managing Insecticide-Resistant Soybean Aphids

The first pyrethroid resistant soybean aphids were reported in Minnesota in 2015. Since then, pyrethroid resistant soybean aphids have been reported in Iowa, North Dakota, and South Dakota. In an effort to address resistance, researchers from those states have put together a new extension publication.

A small, green, winged insect sitting on a soybean leaf.

First Soybean Aphid Populations Detected in South Dakota

While scouting fields this week, we observed winged (alate) soybean aphids in Southeast South Dakota.