Content by Adam Varenhorst

: Gray caterpillar with dark markings, white splotches and a white stripe running down the middle of its back.

Monitor Alfalfa for Cutworm Activity

During the spring, there are a lot of insects to scout for in alfalfa. One pest group that should be focused on right now are cutworms. There are a couple of cutworm species that are active earlier in the season than others.

A grub that has an orange colored head and legs and a white body with a dark grey tip at the end. The grub is laying on top of the soil.

2019 June Beetle Update

In the spring of 2016, we received reports of large populations of June beetles in Central South Dakota, which indicates the start of a new cycle for the grubs. Based on these reports, it is estimated that 2019 will be the big emergence year if the 2016 adults were successful and their grubs survived.

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.

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.

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.

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.

fruit and vegetable garden with raised beds

Growing Sweet Corn in South Dakota

Sweet corn is a delicious vegetable enjoyed by both kids and adults. It is popular in the mid-to-late summer and is often bought at stands on street corners and grocery stores throughout small towns in South Dakota. What many people don’t know, however, is that sweet corn is a remarkably easy vegetable to grow yourself. All you need are a few essential materials and some basic knowledge to grow your own delicious sweet corn.

A vast, open rangeland with a few patches of weeds.

An identification guide to common Rangeland Insect Pests of South Dakota

The insects listed in this guide can be pests of rangeland in South Dakota. The best approach for preventing these pests from reaching damaging populations involves routine scouting.

soybean plants showing difference in pods

Soybean Planting Population: A Review

There have been reports in recent years that agronomists in states such as Iowa, Nebraska and Wisconsin have observed success when reducing soybean planting populations.