Appeals court overturns EPA approval of drift-prone weedkiller dicamba, citing ‘substantially understated’ risks

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In a stunning rebuke of the Environmental Protection Agency, a federal court on [June 3] overturned the agency’s approval of popular dicamba-based herbicides made by chemical giants Bayer, BASF and Corteva Agrisciences. The ruling effectively makes it illegal for farmers to continue to use the product.

The ruling by the U.S. Court of Appeals for the Ninth Circuit found that the EPA “substantially understated the risks” of the dicamba herbicides and “failed entirely to acknowledge other risks.”

“The EPA made multiple errors in granting the conditional registrations,” the court ruling states.

The lawsuit was brought by the National Family Farm Coalition, Center for Food Safety, Center for Biological Diversity, and Pesticide Action Network North America.

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The plaintiffs accused the EPA of breaking the law in evaluating the impacts of a system designed by Monsanto, which was bought by Bayer in 2018, that has triggered “widespread” crop damage over the last few summers and continues to threaten farms across the country.

The court found that among other problems, the EPA “refused to estimate the amount of dicamba damage, characterizing such damage as ‘potential’ and ‘alleged,’ when record evidence showed that dicamba had caused substantial and undisputed damage.”

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