EPA Extends Comment Period for Neonicotinoid Risk Assessments

At the request of stakeholders, the U.S. Environmental Protection Agency (EPA) is extending the public comment period for recently released neonicotinoid insecticide risk assessments from February 20, 2018, to April 21, 2018. The Agency published preliminary ecological and human health risk assessments in December 2017 for the neonicotinoid insecticides, clothianidin, thiamethoxam, and dinotefuran, and a preliminary ecological risk assessment for imidacloprid (assessing risks to birds, mammals, non-target insects, and plants). In December 2017, the Agency also published new cotton and citrus benefits assessments for foliar applications of the neonicotinoids, as well as a response to public comments on the 2014 Benefits of Neonicotinoid Seed Treatment to Soybean Production Continue reading

EPA Releases Neonicotinoid Assessments for Public Comment

The U.S. Environmental Protection Agency (EPA) is releasing preliminary ecological and human health risk assessments for these neonicotinoid insecticides — clothianidin, thiamethoxam, and dinotefuran — and a preliminary ecological risk assessment for imidacloprid, assessing risks to birds, mammals, non-target insects, and plants. Preliminary pollinator-only risk assessments for these chemicals were published for comment in 2016 and 2017, and preliminary human health and ecological assessments (for aquatic species only) for imidacloprid were also released in 2017.

The Agency is also releasing new cotton and citrus benefits assessments for foliar applications of the neonicotinoids as well as its response to public comments on the 2014 Benefits of Neonicotinoid Seed Treatment to Soybean ProductionContinue reading

EPA Releases Four Neonicotinoid Risk Assessments for Public Comment

The U.S. Environmental Protection Agency has published preliminary pollinator-only risk assessments for the neonicotinoid insecticides clothianidin, thiamethoxam, and dinotefuran and also an update to its preliminary risk assessment for imidacloprid, which we published in January 2016. The updated imidacloprid assessment looks at potential risks to aquatic species, and identifies some risks for aquatic insects.

The assessments for clothianidin, thiamethoxam, and dinotefuran, similar to the preliminary pollinator assessment for imidacloprid showed: most approved uses do not pose significant risks to bee colonies. However, spray applications to a few crops, such as cucumbers, berries, and cotton, may pose risks to bees that come in direct contact with residue. In its preliminary pollinator-only analysis for clothianidin and thiamethoxam, the EPA has proposed a new method for accounting for pesticide exposure that may occur through pollen and nectar. Continue reading

Can attractive toxic sugar baits harm nontarget species? Scientists test a new ingredient to find out

Mosquito control may well be one of the most debated topics among IPM professionals. Pesticide sprays such as DDT and malathion have been decried by groups concerned about their effect on the environment, while groups concerned about the health risks posed by mosquitoes argue that the chemicals save lives. In some situations, attractive toxic sugar baits (ATSBs) have been used as an alternative to broadcast sprays, with effective results.

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