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What to do if you suspect off-target dicamba movement

Hundreds of cases of off-target dicamba movement were documented in Minnesota during the 2017 growing season. Since then, new federal and state requirements and restrictions for new dicamba formulations have been put in place to reduce the risk of off-target events.

However, non-target crops can be very sensitive to growth regulator herbicides. When combined with a degree of volatility, off-target movement and subsequent plant injury is still possible.

Why data transparency is important

Having good data about off-target events continues to be important as we move forward with this technology. This includes suspected particle drift, tank contamination and volatility.

Traditionally, drift complaints are caused by a pesticide that’s not used in compliance with the label. However, in 2017 there were significant concerns about the number of dicamba injury events to non-target crops when the new formulation labels were followed.  

How to report off-target dicamba damage

If you suspect off-target dicamba damage, the Minnesota Department of Agriculture encourages you to submit a complaint.

You’re also encouraged to report dicamba damage to the manufacturers:  

  • Monsanto (XtendiMax): 1-844-RRXTEND (779-8363)

  • BASF (Engenia): 1-800-832-HELP (4357)

  • DuPont (FeXapan): 1-888-6-DUPONT (38-7668)

Your report, along with others’, will help determine the problem’s scope and provide valuable information.

Jeffrey Gunsolus, Extension weed scientist

Reviewed in 2018

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