Wisconsin Agriculture - Extension

🚜 Alfalfa weevil season is just about here in Wisconsin!

In this video, Dr. Emily Bick, Extension field crop entomology specialist, shares what she’s seeing right now in the field—and what growers should be watching for as the season gets started.

Key takeaways:
📍 Alfalfa weevil damage looks like small pinholes on alfalfa leaves
📈 The action threshold is 40% of stems with pinhole damage
⚠️ If you’re within one week of cutting, spraying isn’t recommended
🚜 Early cutting can be one of the most effective control options

Bottom line: start scouting now, but don’t panic—alfalfa can recover well if damage stays below threshold!

Sign up to receive Insect Pest Text Alerts to get a heads up when pest counts are up in fields near you: go.wisc.edu/InsectPestAlert
Managing Alfalfa Weevil in Wisconsin Alfalfa: cropsandsoils.extension.wisc.edu/articles/managing-alfalfa-weevil-in-wisconsin-alfalfa-fields/
Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) Crop Pest Trap Networks: datcp.wi.gov/Pages/Programs_Services/TrapNetworks.aspx