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EPA Study Finds Insecticide Imidacloprid Poses Threat to Bees

  • Chemical can reduce pollination numbers, honey produced
  • EPA conducting more studies to assess other pesticides risk

The U.S. Environmental Protection Agency said Wednesday a preliminary pollinator risk assessment for the insecticide imidacloprid shows the chemical can threaten bees, which boost the value of crops by an estimated $15 billion annually.

The assessment identified a residue level for imidacloprid of 25 parts per billion, a threshold above which effects are likely, the statement said. Fewer hive pollinators and less honey produced are among potential effects, according to the report, which was prepared in collaboration with California’s Department of Pesticide Regulation.