Field Crops Entomology Program
Michigan State University
For MSU weed control information, visit our sister site, MSUWEEDS.COM
For regional field crops information, visit Purdue's Chat 'n Chew Cafe
Handy Bt Trait Table - Updated for 2017
After the major issues with western bean cutworm in the Great Lakes region in 2016, and increasing problems with leps in the southern United States, a major change was made to the 2017 Handy Bt Trait table. It now includes a new column ('May Be Ineffective On') to highlight insect x Bt combinations with documented field-failures, confirmed resistance, or cross-resistance. Ineffective ratings are based on published lab assays &/or field research. This column is intended to alert growers and consultants to potential management problems, influence seed selection, and encourage field scouting.
To view or download the trait table, click below.
2017 Bt trait table
Citations for reduced effectivness
NOTE - If you wish to give a link to the table on a website or in a publication, it is easiest to give this home page, msuent.com, because the table is updated and reposted during the year. If you would like to reprint the table in a local publication or extension bulletin, contact Chris DiFonzo (email@example.com or 517-353-5328) for a version modifiable for your state.
Western bean cutworm x Cry1F will be discussed at the following winter extension meetings....
January 20, Corn/Soybean Day, Founders Hall at Sauder Village, Archbold, Ohio
February 20, Branch County Farmers Day in Coldwater, MI
February 21, IPM meeting at Cabela's in Dundee
February 22, IPM meeting at the Dowagiac Conservation Club
February 23, IPM meeting the Sanilac Career Center north of Peck