Using Dicamba on Dicamba-Tolerant Soybeans

​Label restrictions put in place last year for four dicamba products will continue for 2019-2020, and some further restrictions have been added. The products are:

  • Engenia Herbicide®, manufactured by BASF
  • Xtendimax® With VaporGrip® Technology, made by Monsanto
  • FeXapan® Plus VaporGrip Technology®, a DuPont product
  • Tavium® Plus VaporGrip® Technology, a Syngenta product​ 

These herbicides are intended for post-emergent use on soybeans that have been genetically modified to resist damage from the products. Both the seeds and the products were widely used in 2017-2018. Despite the formulation intended to reduce volatilization, there were many complaints about the products volatilizing and drifting onto non-target crops. 

In response, the U.S. Environmental Protection Agency imposed new label requirements for 2018, which will remain in effect for the 2019-2020 growing seasons, and added some other requirements. 

New Label Requirements

These are not all of the requirements. Please read the label thoroughly. Remember, the label is the law.

  • These are now restricted-use products, so that only certified applicators can apply them. (In Wisconsin, applying under the supervision of a certified applicator is not acceptable.)

  • Applicators must complete special training to use these products annually, prior to the growing season. 

  • Record-keeping requirements are new and different from those for other products.

  • You must check with the owner or operator of neighboring fields to find out what is planted or will be planted there. It is not enough to check Driftwatch™, because it does not include soybean fields unless they are organic. Also, it is voluntary, so may not include even all of the organic soybean fields.

  • New requirement in 2019: The latest that you can apply these products is 45 days after planting or until the soybean plants reach the R1 stage, whichever comes first.

  • New requirement in 2019: In some counties, you must provide a 57-foot in-field buffer on all sides to protect federally listed threatened and endangered species. Before you use any of these products, you must obtain an Endangered Species Bulletin for the month you plan to apply. Bulletins are available on the EPA website.

Training

Wisconsin will accept training provided by the three companies, by the University of Wisconsin-Madison pesticide applicator training program, and training provided by other states.

Monsanto training

BASF training

Corteva Agriscience training

Complaints

If you suspect that you have damage to your crops or landscaping from dicamba products or other herbicides, please submit a complaint to the Wisconsin Department of Agriculture, Trade and Consumer Protection. Find more details on our pesticide complaint page.


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