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US EPA bars neonicotinoid use extensions

The US EPA has written to the registrants of the neonicotinoid insecticides, clothianidin, dinotefuran, imidacloprid and thiamethoxam, to inform them that it is unlikely to approve new outdoor uses until additional data on bees have been submitted and pollinator risk assessments completed. The letter reiterates that the Agency has required pollinator hazard and exposure data under the registration review for neonicotinoids. It requires data on potential impacts on developing bees, oral exposure and bee colony health. In the absence of the new studies, the EPA does not believe it has sufficient information to support a determination that new outdoor uses would meet the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA) registration standard. Until the data have been reviewed and risk assessments completed, the Agency is unlikely to be in a position to determine that such uses would avoid "unreasonable adverse effects on the environment", the EPA points out.


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