MSU Herbicide School offered in Washtenaw County

This meeting will aid growers and crop consultants in making wiser decisions regarding herbicide use and reducing weed pressure in prevented planting acres.

Field with weeds
Photo by Christy Sprague, MSU

Michigan State University Extension in southeast Michigan will be offering Herbicide School: Controlling Weeds in Prevented Planting Acres from 9 a.m. to 2 p.m. on March 27, 2020, at the Washtenaw County MSU Extension office, 705 N. Zeeb Road, Ann Arbor, MI 48107.

During the 2019 growing season, an average of 35% of the fields in southeast Michigan did not get planted, allowing weeds to thrive and set seeds. As a result, weed control will be the biggest challenge farmers will face in 2020.

This one-day herbicide school that will give farmers and the local agriculture industry the right tools to control weeds in prevented planted acres. Participants will learn how to delay the evolution of herbicide resistance and pair the correct herbicide to individual weed problems while controlling. 

Program agenda

  • 8:30 a.m. Registration
  • 9:00 a.m. Weeds to watch for this spring
  • 9:45 a.m. Break
  • 10:00 a.m. Lipid and amino acid synthesis inhibitors
  • 10:45 a.m. Break
  • 11:00 a.m. Growth regulators and photosynthesis inhibitors
  • 11:45 p.m. Lunch
  • 12:30 p.m. Pigment inhibitors and cell membrane disrupters
  • 1:15 p.m. Break
  • 1:30 p.m. Seedling shoot and root growth inhibitors
  • 2:15 p.m. Adjourn/RUP credits

During this state-of-the-art meeting, flats with weeds and crops will be planted and sprayed before the meeting to demonstrate herbicide injury symptoms. A variety of live weeds will be shown to participants to demonstrate how to identify weeds in the field. MSU faculty and Extension educators will talk about what tools farmers could use in 2020 to minimize weed pressure on prevented planting fields.

Five CCA and five RUP credits (Private Core, Commercial Core, 1A and 7A) will be offered. The registration fee is $15 and includes lunch. To guarantee your lunch, you need to register by March 22. Only 30 spots are available! 

Register at: 2020 Herbicide School

For more information, call the MSU Extension Lenawee County office at 517-264-5300 or email Ricardo Costa at


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