EPA Revokes Approval of Dow's 'Enlist Duo' Herbicide Because of High Toxicity

Harmful Pesticide Banned on Genetically Engineered Crops

WASHINGTON— In response to litigation by conservation groups, the Environmental Protection Agency announced it will revoke approval of the herbicide “Enlist Duo” after  determining that its combination of chemicals is likely significantly more harmful than initially believed. Approved by the agency just over a year ago, Enlist Duo is a toxic combination of glyphosate and 2,4-D that Dow AgroSciences created for use on the next generation of genetically engineered crops that are designed to withstand being drenched with this potent herbicide cocktail. 

The action resolves a year-long legal challenge filed by a coalition of conservation groups seeking to rescind the approval of the dangerous herbicide blend. The EPA had approved use of Enlist Duo in Illinois, Indiana, Iowa, Ohio, South Dakota, Wisconsin, Arkansas, Kansas, Louisiana, Minnesota, Missouri, Mississippi, Nebraska, Oklahoma and North Dakota, and had intended to approve it in additional areas in the near future.

The reversal came after the EPA’s failure to consider the impacts of Enlist Duo on threatened and endangered plants and animals protected under the Endangered Species Act was challenged by Earthjustice and Center for Food Safety, on behalf of Center for Food Safety, Beyond Pesticides, the Center for Biological Diversity, Environmental Working Group, the National Family Farm Coalition and Pesticide Action Network North America. The Endangered Species Act requires that every federal agency consider the impacts of its actions on our nation’s most imperiled plants and animals and seek input from the expert wildlife agencies before plunging ahead, which the EPA had refused to do.  

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Contact: Lori Ann Burd


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Banner photo Center for Biological Diversity; corn photo courtesy Flickr/Timothy Valentine