Showing results for: neonicotinoid Articles
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The stingless bee species, Scaptotrigona aff. Depilis, as a potential indicator of environmental pesticide contamination
Neonicotinoids have the potential to enter the diet of pollinators that collect resources from contaminated plants. The species Scaptotrigona aff. depilis (Moure, 1942) can be a useful indicator of the prevalence of these chemicals in the environment. Using high‐performance liquid chromatography–mass spectrometry, the authors devised a protocol for neonicotinoid residue extraction and detected ...
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Field scale examination of neonicotinoid insecticide persistence in soil as a result of seed treatment use in commercial maize (corn) fields in Southwestern Ontario
Neonicotinoid insecticides, especially as seed treatments, have raised concerns about environmental loading and impacts on pollinators, biodiversity and ecosystems. We measured concentrations of neonicotinoid residues in the top 5 cm of soil before planting of maize (corn) in 18 commercial fields with a history of neonicotinoid seed treatment use in southwestern Ontario in 2013 and 2014 using ...
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EPA Sued Over Guidance Classifying Seeds Coated with Neonicotinoid Insecticides as Treated Articles Exempt from Registration under FIFRA
On January 6, 2016, a complaint was filed against the U.S. Environmental Protection Agency (EPA) in the United States District Court for the Northern District of California by a coalition of U.S. beekeepers, farmers, and affiliated non-government organizations (Petitioners). The Petitioners allege that EPA has allowed “the ongoing sale and use of unregistered pesticide products” ...
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Risks of neonicotinoid insecticides to honeybees
The European honeybee, Apis mellifera, is an important pollinator of agricultural crops. Since 2006, when unexpectedly high colony losses were first reported, articles have proliferated in the popular press suggesting a range of possible causes and raising alarm over the general decline of bees. Suggested causes include pesticides, genetically modified crops, habitat fragmentation, and ...
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NAFTA TWG on Pesticides Meeting
On November 3-5, 2015, the North American Free Trade Agreement (NAFTA) Technical Working Group (TWG) on Pesticides, established in 1997 to streamline certain pesticide shipments between Canada (CN), Mexico (MX), and the United States (U.S.), held a meeting hosted by the U.S. Environmental Protection Agency in Durham, North Carolina. NAFTA TWG states that its primary objective “is to ...
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EPA Releases Preliminary Risk Assessment for Neonicotinoid Insecticide Imidacloprid
On January 6, 2016, the U.S. Environmental Protection Agency (EPA), in collaboration with California’s Department of Pesticide Regulation (DPR) announced the release of a preliminary pollinator risk assessment for the neonicotinoid insecticide, imidacloprid (Preliminary Risk Assessment or Assessment). In its assessment, EPA states that imidacloprid potentially poses a risk to hives when the ...
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Ninth Circuit Vacates EPA’s Unconditional Registration for the Neonicotinoid Pesticide Sulfoxaflor Based on Hazard to Bees
In an opinion issued on September 10, 2015, the U.S. Court of Appeals for the Ninth Circuit vacated the U.S. Environmental Protection Agency’s (EPA) unconditional registration for the pesticide sulfoxaflor and remanded the matter to EPA to obtain further studies and data regarding the effects of sulfoxaflor on bees and bee colonies. Sulfoxaflor is a new insecticide in the class of ...
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Fate and effects of clothianidin in fields using conservation practices
Despite the extensive use of the neonicotinoid insecticide clothianidin, and its known toxicity to beneficial insects like pollinators, little attention has been given to its fate under agricultural field conditions. The present study investigated the fate and toxicity of clothianidin applied every other year as a corn seed‐coating at two different rates, i.e., 0.25 and 0.50 mg/seed, in an ...
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