Articles tagged with Pesticides
A study by Dr. Anja Weidenmüller reveals that glyphosate affects the collective thermoregulatory capacity of bumblebee colonies, impacting brood development and colony growth. This effect is particularly pronounced in times of resource scarcity, highlighting the need to reassess pesticide approval procedures.
A new project led by INRS will assess how living organisms respond to reduced pesticide use, focusing on soil and water health. The study aims to provide a clear understanding of the benefits and limitations of reducing pesticide use in sustainable farming.
A study found that pesticides can impact the reproductive behavior of male bees, making them less desirable to females. The researchers exposed horned mason bees to a low-toxicity fungicide and discovered that pesticide-exposed males were more likely to be rejected by females.
Researchers found that non-biting midge larvae accumulate pesticides from polluted water and retain them into adulthood. Adult female midges have higher pesticide concentrations than males, which are transferred to their offspring. The study suggests that midges can be a source of pesticides in terrestrial ecosystems.
Researchers at George Washington University developed a novel tool to rapidly screen pesticides for safety and performance. The new approach can aid in the design of next-generation molecules to develop safer pesticides, with only 7% of analyzed compounds meeting safety criteria.
Researchers developed a simple, inexpensive test to detect organophosphate pesticides directly in foods and biological samples. The method uses a new enzymatic cascade reaction called HELP to synthesize luciferin analogues, which produce luminescence in different wavelengths.
Researchers discovered that plant volatile signals can warn neighboring plants of herbivore attacks, activating defense genes and increasing resistance. The team found epigenetic mechanisms, including histone acetylation, play a key role in this process.
A study published in Environmental Toxicology and Chemistry found that pesticide levels are low in nectar and pollen collected by honey bees in urban and suburban areas across the US. Chemical analyses detected 17 pesticides in nectar and 60 in pollen samples, with 73% of all samples containing no detectable pesticide residues.
The EPA has introduced a new policy to evaluate the impact of pesticides on endangered species before new products are introduced to the market. The policy requires consultation with wildlife services and aims to mitigate adverse effects, but challenges remain due to differing approaches and thresholds between agencies.
A new study by Emory University finds that schistosome transmission can be highest when freshwater snail populations are low. Snails competing for resources may lead to lower infectivity rates, contrary to typical pesticide-based control methods.
Researchers from Eötvös Loránd University have created a more efficient method for producing catalysts, which can speed up chemical transformations and reduce environmental impact. This breakthrough could lead to faster drug development and improved pesticide production.
Female mosquitoes learn to avoid pesticides after a single exposure, allowing them to seek out safer food sources and resting sites. The study found that pre-exposed mosquitoes were more likely to avoid pesticide-treated nets and rest in pesticide-free containers.
A UMass Amherst researcher has received a $3 million grant to study the complex interplay of risk factors for autism, including early life exposure to environmental pollutants and genetic susceptibility. The study aims to better understand how multiple pollutants and the folate system are associated with autistic traits.
Researchers have discovered a spray-induced gene silencing technique that effectively controls late blight, a devastating disease affecting potatoes and tomatoes. This environmentally friendly method has potential to reduce the usage of chemical pesticides and can be quickly adapted for new targets.
Mathematicians at the University of Leicester have developed a new mathematical model that could greatly increase the efficiency of pest control. The model uses field data and computer simulations to predict the distribution of slugs in arable fields, accounting for individual creature movements.
A University of Ottawa review provides the first field-wide summary of how pesticide exposure affects social bee gut microbiotas. The study found that pesticides disturb microbial communities, leading to a loss of benefits and potential decline in bee health and performance.
A large population-based study found a significant association between lifetime workplace exposure to pesticides and an increased risk of COPD. The study, which included over 500,000 participants, controlled for other risk factors and found that even low levels of pesticide exposure were linked to a heightened risk of COPD.
Scientists develop a sensitive electrochemical detector using cerium oxide nanozyme to identify organophosphate pesticides in plants. The method provides an unprecedented wider linear range and a detection limit of 0.06 mmol/L, making it suitable for detecting trace amounts of pesticide residues.
Researchers at Washington University in St. Louis are developing a framework to understand how herbicides interact and drift onto unintended plants, affecting crops and the environment. The study found that genetically modified crop introduction influences herbicide use rates and practices, leading to increased drift.
Scientists have discovered new targets for insecticides by analyzing the structure of potassium channels in Drosophila. The study provides a detailed map of the channel, enabling the design of highly selective and safe insecticides.
A new study found that chronic pesticide exposure has detrimental effects on soft-shell clam growth, condition, and feeding rates. The researchers monitored clams in laboratory conditions over 90 days, exposing them to environmentally relevant concentrations of four pesticides registered for use in forest management.
A new project led by University of Illinois researchers will develop machine learning models to predict the reactivity of thousands of organic contaminants in engineered and natural environments. This will help scientists better model pollutant fate and transport, leading to more accurate contaminant risk assessments.
Scientists from Okayama University have identified the genes that cause pesticide sensitivity in sorghum, a superfood grain. The study reveals that these genes are involved in plant defense mechanisms and could help develop crops that can be grown safely with organophosphate treatment.
The number of wild bees has fallen by 25% since 1990, threatening plant reproduction and food production. Researchers must assume social responsibility to communicate their knowledge and work in transdisciplinary coalitions to halt the decline.
A German study reveals that glyphosate and dozens of other pesticides are spreading through the air for miles into national parks and cities. The analysis was published in a peer-reviewed journal and shows that agricultural toxins like glyphosate are classified as probably carcinogenic to humans by the World Health Organisation.
Researchers have developed a new method to remove micropollution from drinking water by using iron and chlorine to break down carbon-based pollutants. The technique produces only CO2 and salt as by-products, making it a promising solution for purifying contaminated water.
A recent study has identified a nematode attractant in flax seeds, which can be used to develop sustainable and environmentally-friendly agriculture methods. The attractant, consisting of cell wall polysaccharides, is found to contain L-galactose sidechains that are critical for nematode attraction.
A study by Greta Wengert and colleagues found that illegal cannabis farms overlap with habitat ranges of endangered Pacific fisher, threatened Humboldt marten, and northern spotted owl. The researchers mapped 1469 illicit cultivation sites using location data and compared them to habitat distribution models.
Researchers have developed a way to bottle the 'smell of fear' produced by predators to repel and disrupt destructive insects. The odor blend can be used in essential oil diffusers to spread over time across gardens or fields, offering a natural alternative to pesticides.
Long-term simulations show that smart land management, such as organic farming and protected refuge areas, can help stabilize threatened bumblebee species. Climate change is expected to have the strongest total effect on bumblebees, threatening many species.
Researchers at UBCO have developed a data processing technique that expands the effectiveness of fluorescence-based water quality monitoring. This approach addresses the challenge of source-specific models by mapping similarities between water sources, enabling real-time detection of hydrocarbons and pesticides in water.
West Virginia University researchers are working on a project to create a tomato that requires little to no pesticides. They aim to identify pest-resistant genes and make those new varieties available to breeders and farmers. The goal is to develop an environmentally friendly and sustainable crop that reduces pesticide use.
Researchers found that captive-raised monarchs can establish proper orientation using their sense of flight direction after being exposed to sunlight and natural cues. The process takes between 24-48 hours, allowing them to fly in the correct direction once released into the wild.
A recent study has identified discrepancies in World Health Organization (WHO) classifications of pesticide hazards, leading to the continued use of potentially lethal pesticides in developing countries. The researchers propose eliminating all pesticides with fatality rates above five per cent to reduce suicides.
A new study found that exposure to organophosphate pesticides may increase susceptibility to COVID-19 infection by triggering an inflammatory response. The research suggests that people with metabolic diseases or cancer may be particularly at risk due to increased ACE2 receptor expression on the surface of airway cells.
Researchers found that drones were only slightly less expensive per unit area than tractor-mounted boom sprayers for pest-control costs, while also having a slight advantage in daily area coverage. Data envelopment analysis showed that both boom sprayers and UAVs reached maximum or near-maximum efficiency for most paddy areas.
Researchers found that chronic dietary exposure to RNAi pesticides enhances their efficacy in controlling pests, allowing for lower concentrations to be used for effective control. This breakthrough has implications for optimizing dsRNA spray approaches and developing genetically engineered crops with built-in pest control.
A recent study by the University of Sydney found that 64% of the world's arable land is at risk of pesticide pollution. The research highlights concerns about human health and environmental impacts associated with widespread agricultural pesticide use, particularly in regions like Asia and Europe.
CABI-led Plantwise plant clinics help farmers adopt safer alternatives to pesticides, including judicious use of pesticides within Integrated Pest Management (IPM) plans. Farmers who visit plant clinics are more likely to wear protective clothing while working with pesticides, indicating a shift towards more sustainable practices.
A team of researchers used a machine-learning approach to map the genetic and environmental connectivity of Aedes aegypti mosquitoes, a primary vector for diseases such as dengue fever and Zika. The study provides insights into the mosquito's adaptability to new landscapes and expanding range.
A recent CABI study has updated the list of potential biopesticide active ingredients for managing fall armyworm in Africa, with 41 products now registered across 30 countries. The review highlights the efficacy of eight additional biological control agents, including Aspergillus oryzae and thyme oil.
Researchers developed an in vitro and computational model-based approach to identify chemicals affecting male reproductive health without animal tests. The method predicts exposure of fetuses to harmful substances, showing promising results compared to traditional animal tests.
Researchers discovered that mosquitoes carrying Wolbachia bacteria are less susceptible to widely used pesticides. The study found that the bacterial species naturally infecting mosquitoes makes them resistant to three types of pesticide, potentially reducing their use and environmental impact.
Excessive use of pharmaceuticals and pesticides in industrial meat production facilities affects water quality and air pollution. Aerial transport of agrochemicals from feed yards contributes to environmental degradation, posing risks to humans and wildlife.
Scientists are developing new solutions for honeybee colony collapse, a threat to global food security. The University of California's four-campus network will use breeding programs, medications, and monitoring tools to combat the issue.
A bio-pesticide made from safflower and cottonseed oils has been found to work against two-spotted spider mites by preventing their embryo from rotating within its eggshell for hatching. This allows the pesticide to spare the mites' natural predators, making it a promising eco-friendly solution for farmers and gardeners.
The CABI-led Plantwise programme has helped millions of smallholder farmers increase crop-based activity and income by 12-30%. The programme supports over 44 million farmers with plant health knowledge, reducing the likelihood of a household falling below the poverty line by 5%.
Researchers developed a detector that mimics a mosquito's antenna to identify species and sex based on sound patterns. The bioinspired device uses machine learning and speech recognition tools to differentiate between species and sex, offering a potential tool for disease-carrying mosquito identification and selective pesticide use.
Researchers found widespread contamination of English rivers with neurotoxic pesticides fipronil and imidacloprid, exceeding accepted safe limits. The use of pet flea products is a likely source of the contamination, posing a high risk to aquatic ecosystems.
A new disease affecting maize has been discovered by researchers at the University of Göttingen, caused by an aggressive strain of the fungus Trichoderma. This discovery raises concerns about the potential risks of using organic plant protection products in agriculture.
A study by the University of Copenhagen found that Danes associate purity with naturalness, preferring foods with visible mold to those with long shelf lives. This trend suggests a shift in attitudes towards food purity, with consumers prioritizing natural ingredients and visible signs of spoilage.
Researchers found that butylparaben, used in cosmetics, has endocrine disrupting effects on humans. The study proposes using the existing EU guidance document with modifications to identify endocrine disrupting effects of a broader spectrum of chemicals.
Researchers discovered elevated markers associated with heat stress and pesticide exposure in failed queens from B.C., suggesting temperature fluctuations during transportation and potential pesticide effects may contribute to queen bee failure. A diagnostic test is proposed to help beekeepers understand and prevent this issue.
Research suggests that fertilizer and pesticide applications on croplands are the largest source of sulfur in the environment, exceeding peak levels seen during acid rain days. This increase poses risks to mercury levels, soil degradation, and asthma rates in agricultural areas.
A set of reviews concludes that hundreds of studies link widespread health issues including infertility, diabetes, and impaired brain development to hormone disruptors in pesticides, flame retardants, and certain plastics.
A study of Uruguayan children wearing silicone wristbands found an average of 13 pollutants, including industrial and agricultural chemicals banned in the US. The researchers detected pesticides like DDT and brominated flame retardants, highlighting concerns about long-term environmental and health impacts.
Research at UC Berkeley reveals pesticides can boost schistosome parasite transmission by affecting snail survival, aquatic predators and algae composition. This increases disease burden in areas with high agricultural agrochemical use, posing a significant threat to public health.
Researchers developed the APIStrip tool to sample contaminants in honeybee colonies without disrupting their normal routine. The method uses a polystyrene strip with Tenax to detect up to 442 kinds of pesticides, including residues from beekeepers' treatments and plant protection products.
Research has found that nearly all water samples from 15 waterways discharging into the Great Barrier Reef lagoon contained pesticide mixtures, with up to 20 pesticides present in some samples. The study emphasizes the need for improved pesticide management practices among land managers and farmers to reduce losses to waterways.
A new CABI-led study suggests that governments should reallocate subsidies to encourage the use of lower-risk control options like biopesticides. The research also emphasizes the importance of enforcing pesticide regulations and mass media campaigns to inform farmers about recommended pesticides and sustainable management options.