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California to review bee risks

The US California EPA’s Department of Pesticide Regulation (DPR) is to re-evaluate four neonicotinoid insecticides because of concerns over risks to bees. The move has been prompted by residue studies indicating high levels of imidacloprid in treated ornamentals and increases in residue levels over time. The DPR’s review will cover imidacloprid and the other nitroguanidine neonicotinoids, clothianidin, dinotefuran and thiamethoxam.



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