The Handy Bt Trait Table was updated and posted Feb. 29, 2024 by Dr. Chris DiFonzo, Michigan State University. It lists information about all Bt corn hybrids commercially available in the U.S. in a concise two-page format. It presents the trade names for hybrids with Bt traits, Bt protein(s) expressed, targeted insects, refuge requirements, and herbicide traits. In this updated version, there is a separate table for trait packages that are being phased out as standalone products, as these are not commercially available but have a historical reference to traits sold and tested in the past.

The table is a useful reference to help understand which hybrids have which traits (both Bt and herbicide tolerance traits). This table can help avoid the development of resistance from repeatedly using the same traits (even if you change hybrids) and will be useful during the field season as you troubleshoot insect injury or prepare to apply herbicides.

Now in its 25th year, this table has become the standard as an authoritative reference to Bt toxins in corn. For more information, see the Bt Trait Table site.