MSU Weed Science - Department of Crop and Soil Sciences
Jun 23rd, 2017

Field Crops Entomology Program
Michigan State University

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For MSU weed control information, visit our sister site, MSUWEEDS.COM
For regional field crops information, visit Purdue's Chat 'n Chew Cafe

Avipel Special Local Needs labels extended into 2017

For those of you dealing with bird damage to corn stands before and just after emergence, the Section 24(c) Special Local Needs labels for Avipel crane repellent were extended to July 2017. Avipel is a non-lethal repellent with active ingredient anthraquinone. Sandhill cranes find anthraquinone-treated seed distasteful, and learn to avoid it. Avipel liquid is applied as a seed treatment, alone or with other pesticides, so you must arranage for seed to be treated ahead of time. Avipel dry can be used straight into the hopper-box, however it must be mixed well with the seed for even coverage.

Companies carrying Avipel in Michiga (there may be others)  -  Helena outlets,  CPS

Access the current Michigan labels for the two formulations by clicking here: 
      Avipel DRY HOPPERBOX      or      Avipel LIQUID

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  (latest version, from March 15, 2017)

Citations for reduced effectiveness

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,, 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 ( or 517-353-5328) for a version modifiable for your state.