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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.

Tan grasshopper with light colored stripes on its back sitting on the soil surface.

South Dakota Grasshopper Prediction for 2023

Grasshoppers can cause serious defoliation in forage, soybeans and corn throughout much of the growing season. See our activity predictions for the 2023 growing season based on the 2022 U.S. Department of Agriculture Adult Grasshopper Survey.

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.

Alfalfa weevil larvae and adult.

It’s Time To Start Scouting for Alfalfa Weevils in South Dakota

With increasing temperatures, the degree days for alfalfa weevils have steadily increased. The best way to avoid serious alfalfa weevil defoliation is to scout and detect populations early.

A small black bug with tan margins on its wings resting on a grass seed head.

Time to Start Scouting for Black Grass Bugs

In central and western South Dakota, black grass bugs are a common spring forage pest that can cause considerable damage during periods of drought. Learn how to monitor and manage this pest to protect your forages this spring.

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

Alfalfa Weevil Activity Prediction Update: May 4, 2023

With warmer temperatures during the last week, there was an increase in the accumulation of degree days for alfalfa weevils. See our latest observations from around the state.

Small group of bison grazing winter pasture.

Considerations for Winter Bison Management

Although many tools and techniques developed for cattle management have been adapted for bison, there are some stark differences between the two species that producers should consider when managing bison on winter range.

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

Alfalfa Weevil Activity Prediction Update: April 27, 2023

As temperatures warm up, degree days will accumulate more rapidly, and alfalfa weevils could quickly become an issue. See our latest observations from around the state.

A woman sits in a grassland with a clipboard making notes. More people with notes and buses are in the background.

South Dakota Range Management Workshop Set for June 27-29

April 18, 2023

SDSU Extension is partnering with the United States Forest Service, Bureau of Land Management and Natural Resources Conservation Service to provide the 2023 South Dakota Range Management Workshop June 27-29 near Deadwood, South Dakota.