Content by Patrick Wagner
Dectes Stem Borer Adults Are Active in Soybean
SDSU Extension is again surveying soybean in South Dakota for Dectes stem borer adults. After a slow start this growing season, large populations of beetles were observed in soybeans last week.
Bean Leaf Beetles Are Active in South Dakota
It’s important to remember early season scouting for bean leaf beetle defoliation. At this time, overwintering bean leaf beetles reach the adult life stage, and they emerge in with an appetite.
Wet Spring Brings Surge of False Chinch Bugs
Within the past week, large populations of false chinch bugs have been reported across western South Dakota. In high numbers, these pests can pose a threat to Brassica plants.
Alfalfa Weevil Activity Prediction Update: June 5, 2024
Although the degree day estimates suggest that alfalfa weevils are no longer active in the fields and should be pupating, scouting has indicated otherwise.
Don’t Forget to Scout Canola for Flea Beetles
Canola emergence is well underway and ahead of emergence at this time in 2023. There are three species of flea beetles that commonly infest canola and feed on the leaves.
Alfalfa Weevil Activity Prediction Update: May 29, 2024
Most alfalfa weevil larvae that were observed this week were between the first and second instar, but it is likely that later instars are present in southern counties.
Common Stalk Borer Activity Estimate: May 24, 2024
Throughout South Dakota, common stalk borer caterpillars are still active in alternative weed and grass hosts.
Alfalfa Weevil Activity Prediction Update: May 16, 2024
South Dakota finally warmed up and as a result, alfalfa across the state should be scouted for alfalfa weevil larvae.
Alfalfa Weevil Activity Prediction Update: May 9, 2024
Although May hasn’t been extremely warm, the accumulated degree days in South Dakota since January 1, 2024, suggest that alfalfa weevil larvae could be active in several areas of the state.
I heard cicadas are having a big year. Are they coming to South Dakota?
Cicadas are making headlines—specifically the periodical cicadas in Brood XIII and Brood XIX. Both both broods are in the Midwest and are geographically close together. Find out where you can expect to see them this spring.