Bryan Jensen of the University of Wisconsin Integrated Pest Management Program takes you into the field to show you how to scout and manage alfalfa weevil in Wisconsin field crops. Scouting after first-cut harvest is different than scouting before harvest because it includes checking during regrowth for green up. Also, the economic threshold moves up to 50% on the count of plants showing damage.
For more information, consult your county Extension office or these resources:
- Cullen Field Crop Entomology Lab, Department of Entomology, UW-Madison and UW-Extension
- Wisconsin Department of Trade, Agriculture, and Consumer Protection’s Wisconsin Pest Bulletin
- Pest Management in Wisconsin Field Crops (A3646)