Content by Philip Rozeboom

Greenish brown bugs on a white sweep net cloth.

Alfalfa Plant Bugs Showing Up in Abundance

Several insect pests have been showing up early in alfalfa this season, including the alfalfa plant bug. Learn how to identify, scout, and manage this pest before it impacts your alfalfa yields.

Bean leaf beetle feeding damage on young soybean plants.

Time to Start Scouting for Bean Leaf Beetles

With soybean emergence underway, the next concern is early-season bean leaf beetle defoliation. Learn some expert tips for scouting and managing them before they impact yields.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: June 1, 2023

Throughout much of the state, enough degree days have accumulated for alfalfa weevil larvae to begin pupating. Scouting should continue until larvae are not observed.

Small pale green leafhopper on a green alfalfa leaf.

Potato Leafhoppers Arriving Early This Season

Potato leafhoppers are already active in alfalfa due to prevalent south winds and above-average temperatures. Learn some tips for scouting and managing them before they impact yields.

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

Common Stalk Borer Activity Estimate: May 25, 2023

Common stalk borer caterpillars are a frequent early-season pest of corn, and their hatching and movement can be estimated by using degree days. See our latest scouting and management recommendations based on observations from around the state.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: May 25, 2023

Last week we confirmed both alfalfa weevil adult and larval activity in alfalfa. Scouting should continue, as the forecasted warm weather will promote alfalfa weevil larvae feeding.

Many small, thin insects on a yellow background with a mechanical pencil tip for scale.

Invasion of the Western Flower Thrips

Recent southerly winds brought large numbers of western flower thrips to the eastern third of South Dakota. Learn how to identify and manage this pest before they become a problem in your yard and garden.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: May 19, 2023

Forecasted weather conditions are ideal for alfalfa weevil activity, and early detection of feeding activity will prevent extensive defoliation.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: May 15, 2023

During the last week, the entire state reached enough degree days to have active alfalfa larvae. In areas with the highest accumulation of degree days, alfalfa should be scouted to ensure that alfalfa weevils don’t cause extensive defoliation.

Caterpillar with brown and black stripes running down the length of its body. The caterpillar has a tan head and is feeding on green plant material.

Army Cutworms Are Active in South Dakota

Army cutworms can rapidly reduce winter wheat stands if large populations are present. See our latest management recommendations based on observations from around the state.