The Canadian “Bt” Corn Trait Tables for 2024 are now available:

English:  Canadian Bt Corn Trait Table for April 2024

French:  Maïs exprimant des protéines insecticides disponibles au Canada (Avril 2024)

Bt is in quotes because RNAi (RNA interference) technology, which is not a Bt trait, is now offered in some of the packages for rootworm protection. 

This 2-page document list 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 22nd 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 Canadian Bt Corn Trait Tables have been updated for March 2023. These tables include all registered Bt Corn Trait Packages and indicates which Bt proteins and herbicide tolerant traits they contain and pests they target. These tables also include known resistance status for each pest and Bt protein. This article contains links to English and French versions of the tables.

This 2-page document list 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 21st year, the Trait Table for field corn has become the standard as an authoritative reference to Bt toxins in corn. Be sure to check out the new supplemental documents for the trait table, including a checklist of Bt events by stack, table of Bt events, and EPA registration numbers.

The Handy Bt Trait Table provides a helpful list of trait names and details of trait packages to make it easier to understand company seed guides, sales materials, and bag tags.

The purpose of this publication is to take some of the confusion of seed treatments away, giving you a better understanding of what is on your seed. The list covers seed treatments registered in the state of Wisconsin for use on field corn, soybean, small grain and/or alfalfa seed.

The Canadian Bt Corn Trait Tables have been updated for April 2021. The tables list information about trade names, Bt proteins, refuge requirements, and more for products approved in Canada in French.

The Canadian Bt Corn Trait Tables have been updated for April 2021. The tables list information about trade names, Bt proteins, refuge requirements, and more for products approved in Canada. 

The Handy Bt Trait Table provides a helpful list of trait names (below) and details of trait packages (over) to make it easier to understand company seed guides, sales materials, and bag tags.

The latest version of the table is always posted at https://www.texasinsects.org/bt-corn-trait-table.html For questions & corrections: Ben Phillips, Michigan State University (phill406@msu.edu) Contributor: Pat Porter, Texas A&M University (web site host)