Corn rootworm: How to validate your management decision

Mid to late July in Wisconsin is the time you can validate your corn rootworm management decisions by checking for root damage. This is the time period just after feeding damage would have occurred, and just before regrowth would start to mask the damage.

Bryan Jensen with the University of Wisconsin Integrated Pest Management Program takes you into a corn field to show you how to dig corn roots to use for rating damage.


You may also be interested in this root damage scoring tutorial.