Handy Bt Trait Table for U.S. Corn Production (Official Version)
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 25th 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. If you would like to reprint the table in a local publication or extension bulletin, contact Chris DiFonzo ([email protected] or 517-353-5328) for a version modifiable for your state.
Handy Bt Trait Table for FIELD CORN (Revised 2/29/2024) Chris DiFonzo, MSU
Handy Bt Trait Table for SWEET CORN (1/8/2024) Ben Phillips, MSU
Watch the video at the bottom of this page to see how to use the trait table
Supplements for more information:
Legacy Bt Corn Trait Tables going back to 2009
Note about insect resistance to Bt corn:
The Bt Trait Table has a column titled 'Species w/ resistance to all Bts in package' to highlight insect x Bt combinations with documented field-failures, confirmed resistance, or cross-resistance. These statements are based on published lab assays &/or field research as documented in the link above for "citations for resistance statements ...'. This column is intended to alert growers and consultants to potential management problems, influence seed selection, and encourage field scouting. It is important to note that the Trait Table is a national publication and resistance may be widespread (as in western bean cutworm) or regional (as in corn rootworm). Check with your local seed company or extension personnel for the types of Bt resistance present in your area.
Now in its 25th 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. If you would like to reprint the table in a local publication or extension bulletin, contact Chris DiFonzo ([email protected] or 517-353-5328) for a version modifiable for your state.
Handy Bt Trait Table for FIELD CORN (Revised 2/29/2024) Chris DiFonzo, MSU
Handy Bt Trait Table for SWEET CORN (1/8/2024) Ben Phillips, MSU
Watch the video at the bottom of this page to see how to use the trait table
Supplements for more information:
- Checklist of Bt Events by Stack (2/29/2024)
- Table of Bt Events (1/8/2024)
- Table of EPA Registration Numbers (3/2023)
- Citations for resistance statements in the Trait Table (1/8/2024)
- How to use the Trait Table (and what it tells you about your corn hybrid) (3/18/2023)
See below for a video walkthrough of how to use the Trait Table (3/3023)
Legacy Bt Corn Trait Tables going back to 2009
Note about insect resistance to Bt corn:
The Bt Trait Table has a column titled 'Species w/ resistance to all Bts in package' to highlight insect x Bt combinations with documented field-failures, confirmed resistance, or cross-resistance. These statements are based on published lab assays &/or field research as documented in the link above for "citations for resistance statements ...'. This column is intended to alert growers and consultants to potential management problems, influence seed selection, and encourage field scouting. It is important to note that the Trait Table is a national publication and resistance may be widespread (as in western bean cutworm) or regional (as in corn rootworm). Check with your local seed company or extension personnel for the types of Bt resistance present in your area.