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USEPA Approves Three Dicamba Products for Five Years

By Amit Jhala and Stevan Knezevic et.al
 
The United States Court of Appeals for the Ninth Circuit issued a ruling on June 3, 2020 that cancelled the registration of three dicamba products XtendiMax®, FeXapan®, and Engenia® primarily used in dicamba-resistant soybean (Roundup Ready 2 Xtend® soybean).
 
On Oct 27, 2020, The United States Environmental Protection Agency (USEPA) announced a new 5-year registration for XtendiMax® and Engenia, and re-registered Tavium (a premix of dicamba and S-metolachlor).
 
To reduce off-target movement of dicamba, USEPA’s 2020 registration features important control measures, including:
  • Requiring a downwind buffer of 240 feet and 310 feet in areas where endangered species are located. The use of hooded sprayers during application may reduce certain buffer requirements.
  • Requiring an approved pH-buffering agent (also called a Volatility Reduction Agent or VRA) be tank mixed with dicamba products to reduce volatility.
  • Prohibiting dicamba application in Roundup Ready 2 Xtend® soybean after June 30, regardless of soybean growth stage.
  • Simplifying the label and use directions so that growers can more easily determine when and how to properly apply dicamba.
Source : unl.edu

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