The Ninth Circuit granted in part one petition to review and denied another petition to review EPA's 2014, 2015, and 2017 decisions to register a pesticide that combines two chemicals—2,4-dichlorophenoxyacetic acid (2,4-D) choline salt and glyphosate—to kill weeds on corn, soybean, and cotton fi...

The Ninth Circuit vacated EPA's 2018 decision to conditionally register three dicamba-based herbicides designed to be sprayed on genetically engineered soybeans and cotton. Nonprofit groups argued the decision violated the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). The court found ...

The Ninth Circuit ordered EPA to respond to a petition requesting that the Agency end the use of the pesticide tetrachlorvinphos (TCVP) in household pet products. An environmental group submitted an administrative petition to cancel the registration of TCVP in 2009, following a peer-reviewed study t...

The Ninth Circuit granted environmental groups' petition to review EPA's 2017 order maintaining a tolerance for the pesticide chlorpyrifos, and vacated the Agency's order. The groups argued that the Agency's need for additional scientific research was not a valid ground for maintaining a tolerance t...

A district court granted in part but largely denied in part EPA's motion to dismiss a lawsuit filed by environmental groups alleging that EPA failed to consult with federal wildlife agencies before registering over 2,000 pesticide products. The groups argued that EPA violated the ESA by failing to e...

A district court denied a pesticide manufacturer's motion to dismiss a lawsuit alleging that the label on one of its weed-killing products is false and misleading. The product's label states that it targets an enzyme "found in plants but not in people or pets." But an anti-pesticide group alleges th...

The Ninth Circuit vacated EPA's conditional registration of a pesticide because the Agency failed to support its requisite finding that registration was in the public interest. A pesticide manufacturer applied to register a pesticide that uses nanosilver as its active ingredient. EPA conditionally r...

A district court, on motions for summary judgment, dismissed a lawsuit against EPA filed by a group of beekeepers, farmers, and organizations concerned about the effect of pesticide-treated seeds on bees and other pollinators. The plaintiffs argued that the practice of coating seeds with neonicotino...

The Ninth Circuit vacated and remanded EPA's unconditional registration of insecticides containing sulfoxaflor, ordering the Agency to obtain further studies and data regarding the effect of sulfoxaflor on bees, as required by EPA regulations. FIFRA prohibits the use or sale of pesticides that lack ...

The Sixth Circuit vacated a U.S. Environmental Protection Agency (EPA) rule exempting from the Clean Water Act's (CWA's) national pollutant discharge elimination system (NPDES) permitting requirements pesticides applied in accordance with the Federal Insecticide, Fungicide, and Rodenticide Act. The ...