The Regional Corn Rootworm Monitoring Network turned five in 2025! In 2025, data from 273 sites were compiled to produce this report. Data from 143 sites were entered into the data entry website used by the Regional Corn Rootworm Monitoring Network, and data for 130 sites were shared with us from the Iowa Soybean Association.

The Corn Rootworm Trap Network is 5 years old! We have learned a lot about corn rootworm populations here in Ontario and we value the efforts of all trap participants who have monitored sites each season. A special thanks goes to Dan Bihari, Senior GIS Specialist, OMAFA for maintaining the trap network platform and to our sponsors including Grain Farmers of Ontario (GFO), Agricultural Biotechnology Stewardship Technical Committee (ABSTC) and OMAFA for funding trap supplies.

This report provides a summary of research conducted by the Gassmann Lab at Iowa State University to evaluation insecticide products and traits for corn rootworm management.

This 2-page document lists the types of Bt present in all commercialized corn in the U.S.A. in a concise format. It presents the trade names for traits, Bt event, protein(s) expressed, targeted insects and herbicide traits. Now in its 26th year, the Trait Table for field corn has become the standard as an authoritative reference to Bt toxins in corn. Dr. Chris DiFonzo at Michigan State University is the author, and questions or comments should be directed to her.

The most recent report of corn rootworm beetle counts is now available! This report covers beetle counts on sticky traps placed around the U.S. and Canada in 2024 as well as relevant field history information.