Showing results for: insecticide Articles
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Fipronil and imidacloprid reduce honeybee mitochondrial activity
Bees have a crucial role in pollination; therefore, it is important to determine the causes of their recent decline. Fipronil and imidacloprid are insecticides used worldwide to eliminate or control insect pests. Because they are broad‐spectrum insecticides, they can also affect honeybees. Many researchers have studied the lethal and sublethal effects of these and other insecticides on ...
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Pollinator effects on genotypically distinct soybean cytoplasmic male sterile lines
Poor seed-set limits potential for soybean hybrid seed production. The objective of this study was to evaluate effects of different pollinators on the rate of seed set in three soybean cytoplasmic male sterile (CMS) lines, JLCMS9A, JLCMS82A, and JLCMS89A. The following five treatments were applied under net room isolation-conditions: (i) insecticide application and release of alfalfa leafcutter ...
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Insecticidal Proteins: A Promising Solution for Pest Control
Pests, such as insects, pose a significant threat to agriculture and public health. Traditional methods of pest control, such as chemical pesticides, have raised concerns about their impact on the environment and human health. In recent years, there has been a growing interest in the development of alternative pest control strategies, and one promising approach is the use of insecticidal ...
By Lifeasible
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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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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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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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Fipronil promotes motor and behavioral changes in honey bees (Apis mellifera) and affects the development of colonies exposed to sublethal doses
Bees play a crucial role in pollination and generate honey and other hive products; therefore, their worldwide decline is cause for concern. New broad‐spectrum systemic insecticides like fipronil can harm bees, and their use has been discussed as a potential threat to bees' survival. In the present study, the authors evaluated the in vitro toxicity of fipronil and noted behavioral and motor ...
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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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Could evolution be our ally when it comes to mosquito control?
Two researchers propose a novel approach to reduce mosquitoes’ human toll without disrupting ecosystems. By the quirks of genetics, some people are natural mosquito bait. In any group of 10, it seems, one person will draw a fury of bites, while the rest get off lightly. Which makes a dreamer wonder: Why not devise a nonhuman target to attract mosquitoes and so reduce the toll of ...
By Ensia
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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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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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Comparison of certified and farm-saved seed on yield and quality characteristics of Canola
Relatively high seed prices and low canola (Brassica napus L.) grain prices created a controversy over using farm-saved seed from hybrids. Agronomic implications of saving seed from a canola crop were investigated by planting certified seed and saved-seed of an open-pollinated and a hybrid canola cultivar at eight site-years in Saskatchewan and Alberta, Canada. In one series of experiments ...
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EPA Registers Long-Term Uses for Sulfoxaflor
On July 12, 2019, the U.S. Environmental Protection Agency (EPA) announced in a Decision Memorandum that it has registered new uses and restored previously registered uses for sulfoxaflor. EPA has approved the use of sulfoxaflor on alfalfa, corn, cacao, grains (millet, oats), pineapple, sorghum, teff, teosinte, tree plantations, and restored the uses on citrus cotton, cucurbits (squash, ...
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