(Beyond Pesticides, January 14, 2019)  A petition submitted on January 7 by the Center for Biological Diversity calls on the National Marine Fisheries Service (NMFS) and the U.S. Fish and Wildlife Service (FWS) to initiate rulemaking to proscribe nearly all pesticide use in areas that are deemed critical habitat for endangered species. It asks these federal agencies to use the authority they have under the 1973 Endangered Species Act (ESA) to protect wildlife from the threats represented by pesticides — which threats both agencies have long recognized. The language of the ESA says its purpose is “to provide a means whereby the ecosystems upon which endangered species and threatened species depend may be conserved.” In its press release on the petition, the Center for Biological Diversity (CBD) notes that it comes “after decades of intransigence by the Environmental Protection Agency, which has refused to comply with the legal mandates of the Endangered Species Act to protect the nation’s most imperiled species from highly toxic pesticides like chlorpyrifos and atrazine that are known to harm wildlife.” CBD environmental health director Lori Ann Burd said, “Pesticides pose a devastating danger to endangered wildlife, from coast to coast. If the EPA isn’t going to […]

(Beyond Pesticides, January 8, 2019) At the end of December, the U.S. Department of Agriculture (USDA) finalized its rule regarding the disclosure of genetically engineered (GE) ingredients in consumer foods. After years of local, state and federal pressure to implement a clear, concise labeling requirement for GE foods, advocates say USDA’s rule is a failure, and a capitulation to agrichemical corporations that promote GE farming systems. According to U.S. Representative Chellie Pingree (D-ME), speaking with the Portland Press Herald, the new rule is “an insult to consumers.” She said, “These labels should give people the facts of whether ingredients in their food have been genetically altered, plain and simple.” Rather than the plain and simple language urged by Rep Pingree and other GE labeling advocates, USDA determined to move forward with muddled verbiage that is certain to confuse consumers. GE products will not defined by a term Americans are familiar with, such as GE or GMO. Instead, the term USDA will require on product labels is “bioengineered.” USDA is allowing companies to choose one of the following methods to alert consumers to the presence of GE ingredients in their foods: Inclusion of a “bioengineered” or “derived from bioengineering” symbol alongside […]

(Beyond Pesticides, November 27, 2018) The U.S. Environmental Protection Agency (EPA) ignored the input of an expert weed scientist on the controversial herbicide dicamba, bending to Bayer’s Monsanto and the pesticide industry, according to emails obtained by the Arkansas Democrat and Chronicle (ADC) through a Freedom of Information Act request. The scandal centers on the recent re-approval of the pesticide, a highly volatile and drift-prone herbicide that has become a serious problem for many farmers and state regulators. As top-level EPA officials continue to work with industry to subvert their own agency’s scientific findings, more and more consumers are moving to organic products in order avoid the pesticide risks government regulators ask consumers to accept. Emails ADC received indicate that Jason Norsworthy, PhD, a weed scientist with the University of Arkansas, worked closely with Bayer’s Monsanto in conducting field trials this past summer, but found high volatility and drift of the company’s new dicamba-based herbicide XtendiMax. The product was developed in the face of widespread resistance to glyphosate-based herbicides in genetically engineered (GE) farm fields. However, recent accounts from farmers in the south and midwest indicate that, not only is the switch to dicamba unhelpful  in eliminating drift and reversing escalating weed resistance, its […]

(Beyond Pesticides, November 14, 2018) Monarch butterflies are in the midst of a staggering decades-long population decline that has rapidly accelerated since 2005, research published by an international team of scientists and the University of Florida last month indicates. According to data meticulously collected by researchers, monarchs making their way to central Florida after emerging from their breeding grounds in Mexico have declined by 80% over the last decade and a half. This is roughly the same time frame at which beekeepers began to see precipitous declines in managed honey bee colonies. Researchers point to industrial development and increasing pesticide use as factors that have accelerated the decline of this iconic species. “A broad pattern is that 95 percent of corn and soybean products grown in the U.S. are Roundup Ready crops that resist glyphosate,” said study coauthor Earnest Williams, PhD, of New York’s Hamilton College in a press release. “That has a national impact. What’s really needed are patches of native vegetation and nectar sources without pesticides. It’s not just for monarchs but all pollinators.” Beginning in 1985, renowned monarch expert Lincoln Brower, PhD and his team monitored monarch populations at a pesticide-free cattle pasture south of Gainesville, FL. […]

(Beyond Pesticides, August, 20, 2018) Health Canada’s Pest Management Regulatory Agency (PMRA) has announced a plan to phase out the outdoor use of two neonicotinoid insecticides — thiamethoxam and clothianidin — over three to five years, due to concerns about their effects on aquatic invertebrates. This comes after their 2016 proposal to phase out another neonicotinoid, imidacloprid, for the same concerns, but the proposal has not been finalized. In April, the European Union (EU) voted to ban the most widely used neonicotinoids, citing risks to bees. Earlier this year, PMRA proposed to phase out a number of uses of neonicotinoids in order to mitigate risks to pollinators. And now, after the Canadian agency initiated a special review based on a preliminary analysis of available information on the concentrations and frequency of detection of clothianidin in aquatic environment, the agency has proposed another round of phase-outs. The agency’s review focused on assessing potential risk to aquatic invertebrates exposed to clothianidin applied as a seed, foliar or soil treatment. The assessment finds that, in aquatic environments in Canada, clothianidin and thiamethoxam are both being measured at concentrations that are harmful to aquatic insects. These insects, according to the agency, are an important part of […]

(Beyond Pesticides, August 14, 2018) A federal judge in Brazil has ordered the suspension of the most widely used pesticide in the world, glyphosate. Under the ruling, new products may not be registered in the country until the Brazilian government reevaluates the herbicide’s toxicity. Glyphosate (Roundup) is used widely in Brazil on genetically engineered (GE) crops, which have been subject of concern in the country. This decision preceded a jury verdict last Friday in San Francisco that handed a 46-year-old groundskeeper $289 million for compensatory and punitive damages associated with his non-Hodgkin lymphoma tied to glyphosate/Roundup exposure. Monsanto, glyphosate’s manufacturer saw its stock plunge 14%, or approximately $11 billion, the next day, according to Bloomberg News. Monsanto told the Wall Street Journal that it would appeal the decision. According to Therecorder, “So far, more than 4,000 people have sued over Roundup, most in Missouri and California state courts. About 470 cases have been coordinated in California federal court as multidistrict litigation.” The San Francisco case was heard first because of the plaintiff’s poor health. The judge in Brasilia ruled on August 3, 2018 that new products containing the chemical could not be registered in the country and existing registrations would be […]

(Beyond Pesticides, August 3, 2018) Documents made public in late July show that the U.S. Environmental Protection Agency (EPA) let Monsanto write its own rules after farmers and the public raised red flags over crop damage and contamination caused by its new line of dicamba herbicides. As part of the discovery process initiated by a lawsuit against EPA’s approval of its new dicamba product, called “XtendiMax with Vapor Grip Technology,” emails released (start at p. 147) show Monsanto line-editing regulations first proposed by EPA. This is only the latest in a long string of instances where EPA has worked hand in glove with the agrichemical industry it is charged with overseeing. When the new regulations were released, Beyond Pesticides’ noted broad criticism that the changes will not adequately address the damage caused by this new herbicide. The newest product in the agrichemical industry’s predictable trajectory toward increasingly toxic cropping systems, XtendiMax was developed to be sprayed on corn and soy genetically engineered to tolerate the herbicide. As its flagship Roundup Ready products have failed to control resistant weeds in farm fields throughout the U.S., Monsanto and others in the agrichemical industry continue to reach back towards older, more toxic pesticides […]

(Beyond Pesticides, August 2, 2018) Weed scientists from the University of Missouri (UM) have just published evidence of a water hemp population resistant to six different herbicides. The study is sending shock waves throughout the chemical-intensive agricultural community, particularly in light of the plant’s resistance to 2,4-D. In its reporting on the study, KTIC Rural Radio begged the question, “If we’re already seeing 2,4-D resistance now, what will happen when use of the herbicide becomes even more commonplace?” KTIC is referring to the impending commercialization of products like Enlist Duo, developed by DowDupont in an attempt to address widespread weed resistance to glyphosate. Enlist Duo is an herbicide containing both glyphosate and 2,4-D, and is intended to be sprayed only on crops genetically engineered (GE) to tolerate exposure to both chemicals. However, with growing reports like this, many farmers may begin to rethink their approach. In 2014, a farmer contacted UM indicating that water hemp was not responding to 2,4-D during a regular ‘burndown’ the farmer conducted before planting a new crop. (Chemical-intensive farmers will often use a synthetic herbicide to clear their field for new plantings.) The farmer had also used other herbicides, fomesafen and glyphosate, in this process […]

(Beyond Pesticides, July 26, 2018) A legal complaint filed by a Kansas farmer claims industry giant, Monsanto, knew its new dicamba-formulated product would harm other crops, but marketed and sold it anyway, damaging thousands of acres of crops. The lawsuit, filed by 4-R Farms based in Corning Kansas, lost over 200 acres of soybeans. This is the latest in a string of lawsuits Monsanto is facing. Farmers in Arkansas, Missouri, and elsewhere have been hit with crop losses as a result of the dicamba damage. Advocates  and victims of damage argue that Monsanto places profits ahead of possible damage to crops when it markets seeds resistant to a powerful weedkiller before making a less volatile herbicide available. This, according to the lawsuit filed in court. The petition, filed last week, could be the catalyst for a class action lawsuit of Kansas farmers against Monsanto, which faces a growing docket of legal challenges. The lawsuit also names chemical company BASF as a co-defendant. BASF is facing its own mounting pile of lawsuits over dicamba. The lawsuit requests unspecified damages and a trial by a federal jury in Topeka. Monsanto marketed its new line of dicamba products, Xtend, to go hand in hand with […]

(Beyond Pesticides, July 19, 2018) A variety of bentgrass, genetically engineered by Scotts Miracle-Gro and Monsanto to tolerate the glyphosate herbicide Roundup, escaped from an experimental field planting in Eastern Oregon 15 years ago, and continues to plague area farmers. Bentgrass is prized by those who maintain golf course greens because of its fine texture and habit of spreading in even, horizontal mats. But the genetically engineered (GE) version has become a giant annoyance for farmers and other growers who battle its spread through the irrigation systems of Malheur County in eastern Oregon. The escape of this GE version of Agrostis stolonifera is especially alarming in Oregon, the grass seed capital of the world. The GE grass showed up after crossing the Snake River from where it had been planted in seed fields in Idaho, despite the fact that the USDA had not approved its release into the seed market. By 2010, farmers and others found it spreading in mats across most of the irrigation canals and ditches that snake across Malheur County. It is now found in Jefferson County, Oregon, and Canyon County, Idaho, as well. The growth habit of the perennial grass is what greenskeepers love, but its persistent […]

(Beyond Pesticides, July 12, 2018) Neonicotinoid insecticides have become notorious for their impacts to insect pollinators like bees and butterflies, but research finding the presence of these chemicals in wild turkeys is raising new concerns about the ubiquitous nature of these chemicals once released into the environment. Published in Environmental Science and Pollution Research by a team from the University of Guelph (UG), this new study highlights the broader effects of neonicotinoids on wildlife, and underlines calls to restrict the use of these products in favor of a more sustainable pest management approach. Looking at roughly 40 wild turkeys in southern Ontario, researchers found 10 that contained pesticide residue in their livers. Claire Jardine, PhD, pathobiology professor and study co-author notes that wild turkeys in agricultural regions are more likely to be contaminated. “Wild turkeys supplement their diet with seeds from farm fields,” she indicated in a press release. The agrichemical industry coats a majority of corn and soybean seeds with neonicotinoids prior to planting. Because of their systemic nature, neonicotinoids are incorporated the seedlings as they grow, with the promise by the industry that this will alleviate pest pressure. However, a significant body of research, including EPA studies, have […]

(Beyond Pesticides, June 19, 2018) Some 200 members of a French beekeeping cooperative in the northern Aisne region have sued Bayer — on the same day the giant chemical company’s acquisition of Monsanto was finalized — after discovering that their honey was contaminated with toxic glyphosate, a known endocrine disruptor and probable human carcinogen (according to the World Health Organization’s International Agency for Research on Cancer). Monsanto is the long-time manufacturer of Roundup, the popular glyphosate pesticide; Bayer now owns not only the company, but also, the liabilities that come with it, including the “Monsanto” name. Environmental activists had denounced the merger, which creates an agrichemical leviathan that promotes use of chemical herbicides and genetically engineered/modified (GE/GMO) seeds. The beekeepers’ suit was filed in early June after Famille Michaud, a large French honey marketer, detected glyphosate contamination in three batches from one of the coop’s members — whose hives happen to border large fields of rapeseed, beets, and sunflowers. Glyphosate is commonly used in French agriculture; President Emmanuel Macron has vowed to ban its use by 2021. Emmanuel Ludot, a lawyer for the cooperative, is looking for an outcome that includes mandated investigation of the extent of glyphosate contamination of honey, and […]

(Beyond Pesticides, June 18, 2018) At the start of National Pollinator Week, Beyond Pesticides today released its new video, Seeds that Poison –to broaden public understanding of the devastating adverse effects of pesticides on the health of pollinators (bees, birds, butterflies, and other organisms), and the solution in the organic management of agriculture, parks, playing fields, gardens, and lawns. Hazardous pesticides tied to the decline of honey bees and native bees are not permitted in certified organic food production and numerous policies adopted by local governments across the U.S. The accumulated studies and data have found that honey bees and other pollinators, such as native bees, butterflies and birds, are in decline. Scientists studying the issue have identified several factors that are contributing to bee decline, including pesticides, parasites, improper nutrition, stress, and habitat loss. (See Beyond Pesticides’ What the Science Shows.) Pesticides have been identified in the independent scientific literature as a major contributing factor. Pesticides in the neonicotinoid (neonic) chemical class have been singled out as major suspects due to their widespread use as seed coatings, high toxicity to bees, “systemic” nature –neonic chemicals move through the plant’s vascular system and are expressed in pollen, nectar, and guttation droplets– […]

(Beyond Pesticides, June 8, 2018) In the wake of U.S. Department of Justice (DOJ) approval of the buyout of Monsanto by Bayer, the new mega-corporation — now the world’s largest agrochemical and seed company — has announced that it will drop the “Monsanto” name, possibly as soon as late summer, when the acquisition is expected to be completed. Bayer first needs to sell off $9 billion in assets to German chemical giant BASF in compliance with a DOJ antitrust agreement that will permit the merger. The union of these two corporations, which joins Bayer’s pesticide business with Monsanto’s genetically engineered (GE) seed operations, faced vigorous opposition from health and environment advocates both in the U.S. and abroad. Fortune magazine has pointed out that dropping a well-known name is unusual, but given that Monsanto is one of the world’s most-hated companies, perhaps the move is understandable. Ditching the “Monsanto” moniker is reportedly one aspect of a coming Bayer campaign to regain public trust and make efforts to engage with critics, according to Bayer spokespeople. Liam Condon, president of Bayer’s Crop Science Division, has said, “Just changing the name doesn’t do so much — we’ve got to explain to farmers and ultimately to […]

(Beyond Pesticides, May 21, 2018)  490,000 Pounds of Toxic Pesticides Sprayed on National Wildlife Refuges in 2016 The nation’s 562 national wildlife refuges play a critical role in protecting fish, plants, and other wildlife. They include forests, wetlands, and waterways vital to thousands of species of plants and animals, including 280 that are protected under the Endangered Species Act. However, private chemical-intensive commercial farming of crops like corn, soybeans, and sorghum has become common on refuge lands, with the increasing use of highly toxic pesticides that threaten the long-term health of sensitive habitats and the creatures who depend on them. The Center for Biological Diversity (CBD) estimates that 490,000 pounds of pesticides were applied to commodity crops like corn, soybeans, and sorghum grown in national wildlife refuges in 2016, the most recent year for which data are available. Tell FWS to take toxic pesticides out of wildlife refuges. The nearly half million pounds of pesticides used on wildlife refuges in 2016 include 2,4-D, dicamba, and paraquat, all of which are toxic to fish, amphibians, crustaceans, and other animals. Also included are 116,200 pounds of glyphosate, the herbicide that has caused widespread decreases in milkweed plants, helping to trigger the 80 percent […]

(Beyond Pesticides, May 15, 2018) According to a new report from the Center for Biological Diversity (CBD), hundreds of thousands of pounds of pesticides are sprayed on lands that are designated as refuges for wildlife and protected under U.S. law. Approximately 490,000 pounds of pesticides have been sprayed on crops grown in national wildlife refuges in 2016 alone. Pesticide use in these sensitive areas poses risks to pollinators, aquatic organisms, migratory birds, and other wildlife on refuges that were created to protect them. The report, No Refuge, released last week, analyzes pesticide use on national wildlife refuges using records obtained through a Freedom of Information Act request. The report finds that in 2016 more than 270,000 acres of refuge lands were sprayed with pesticides for agricultural purposes. Five national wildlife refuge systems are identified as most reliant on pesticides for agriculture: Klamath Basin National Wildlife Refuge Complex in California and Oregon, with 236,966 pounds of pesticides; Central Arkansas Refuges Complex in Arkansas, with 48,725 pounds of pesticides; West Tennessee Refuge Complex in Tennessee, with 22,044 pounds of pesticides; Tennessee National Wildlife Refuge Complex in Tennessee, with 16,615 pounds of pesticides; and, Chesapeake Marshlands National Wildlife Refuge Complex on the Eastern Shore of Maryland and Virginia, with […]

(Beyond Pesticides, May 2, 2018) Granola, cereal, and wheat crackers all contain “a fair amount” of glyphosate, the herbicide in Monsanto’s popular Roundup, according to internal emails from the Food and Drug Administration (FDA). Although the results of these tests have not been formally released, FDA had stated it will be conducting tests for glyphosate in food. Previous reports have detailed the presence of glyphosate, the chemical classified as a “probable carcinogen,” in a wide range of foods and in people’s bodies. Internal emails obtained by The Guardian through a Freedom of Information Act (FOIA) request reveal communication between FDA scientists regarding glyphosate residues in common foods. One email, dated January 2017, detail one scientist’s results from foods taken from his own home. “I have brought wheat crackers, granola cereal and cornmeal from home and there’s a fair amount in all of them,” FDA chemist Richard Thompson wrote to colleagues in the email last year regarding glyphosate. He further went on to write that broccoli was the only food he had “on hand” that he found to be glyphosate-free. According to The Guardian, another FDA chemist Narong Chamkasem separately found “over-the-tolerance” levels of glyphosate in corn, detected at 6.5 parts per million, an FDA […]

(Beyond Pesticides, April 23, 2018) The U.S. Environmental Protection Agency (EPA) is accepting comments on its human health and environmental risk assessments of glyphosate (sold as Roundup™, Rodeo™, and many other products) until April 30. Evidence is mounting that glyphosate products cause cancer and many other human health and environmental problems. Sign the petition asking EPA to ban glyphosate. Despite the prevalent myth that this widely used herbicide is harmless, glyphosate is associated with a wide range of illnesses, including non-Hodgkin’s lymphoma, genetic damage, liver and kidney damage, and endocrine disruption, as well as environmental damage, including water contamination and harm to amphibians. Researchers have also determined that the “inert” ingredients in glyphosate products, especially polyethoxylated tallow amine or POEA –a surfactant commonly used in glyphosate and other herbicidal products— are even more toxic than glyphosate itself. Monsanto, manufacturer of glyphosate, formulates many products (such as Roundup™ and Rodeo™) and markets formulations exclusively used on genetically engineered (GE) crops. Glyphosate is one of the most widely used herbicides in the world, due in large part to the increased cultivation of GE crops that are tolerant of the herbicide. This petition summarizes the reasons glyphosate should be banned. More information can be […]

(Beyond Pesticides, April 12, 2018) The Justice Department will allow two notorious agrichemical corporations, Bayer and Monsanto, to merge, according to reports published earlier this week. Despite strong voices of opposition from grassroots advocates across the country, and investigations by state Attorneys General, the over $60 billion merger was approved after Bayer agreed to sell off select sectors to another competitor, BASF.  The merger will make Bayer the largest seed and pesticide company in the world. While lining the pockets of C-suite executives, farmers will be hurt by decreased competition and greater costs, which will ultimately affect consumer prices for food. China, Brazil, Australia, and the European Union (EU) signed off on the deal prior to U.S. approval. As part of EU negotiations, Bayer agreed to divest $7 billion, selling off its soybean and cottonseed sectors, as well as its glufosinate herbicide division, which competes with Monsanto’s Roundup. Bayer also promised European regulators that it would not attempt to foist genetically engineered (GE) crops onto European consumers.  The U.S. Justice Department added additional requirements, noting that widespread use of GE crops in America meant there would be different considerations. According to reports, Bayer will need to sell off additional seed […]

(Beyond Pesticides, April 4, 2018) In late March, the Missouri Department of Agriculture hosted a public hearing to discuss a proposed emergency rule restricting the sale and use of the herbicides dicamba and 2,4-D – which are known for their ability to drift off-site and damage sensitive crops. The emergency rule was introduced to prevent off-label use of specific dicamba or 2,4-D products. Thus far, dicamba is responsible for damaging approximately 325,000 acres of soybeans in the state last year. The proposed rule will stop sales of the herbicides dicamba and 2,4-D between April 15 and October 1 in Missouri. The department’s goal is to prevent off-label pesticides from drifting onto neighboring property and damaging other crops. According to the department, if it chooses to pursue an emergency rule, it could become effective as soon as April 1, 2018, and expire 180 days later. The rule also requires registrants to provide a sales record by April 30 for each pesticide sold between October 1 and April 15. A proposed rule will be filed at the same time as an emergency rule to initiate the formal rulemaking process. The draft rule language reads as follows: Pesticides that meet the conditions of this section are […]

(Beyond Pesticides, March 8, 2018) Simple approaches that increase populations of vertebrate predators, like bats and falcons on farms, can reduce pesticide use, increase on-farm productivity, and conserve wildlife, according to a literature review published by researchers at Michigan State University in the journal Agriculture, Ecosystems and Environment.  The review encompasses 48 studies published over the last 150 years on the effect of human interventions to enhance natural ecosystem services. Results point not only to new methods to improve on-farm pest management, but also potential ways to engage farmers and citizen scientists in implementing these win-win strategies. Researchers looked at a number of methods tested in the scientific literature that would increase on-farm populations of vertebrate pest predators. Broadly, discrete approaches such as installing structures like nest boxes, perches, and artificial roosts were investigated alongside more wide-ranging systems aimed at altering habitat and increasing landscape complexity. The latter includes methods such as installing field borders, increasing tree cover, reintroducing native species, and eliminating invasives. The more discrete approaches provided a simpler, more accessible, and less expensive method of pest management when compared to approaches that require more wide-ranging landscape changes, though the benefits of those activities were not negligible. Nest […]

(Beyond Pesticides, February 23, 2018) Agrichemical corporation Monsanto has lost its bid to halt a statewide ban on the use of its specialty dicamba herbicide in Arkansas. Despite a lengthy process of evaluation and public comment that led to a prohibition on the use of drift-prone dicamba herbicides during the growing season on Arkansas farms, Monsanto made one last-ditch attempt to stop the law from going into effect by suing the entire state. With the industry’s loss, Arkansas is on track to implement the toughest restrictions against dicamba in the U.S. State Circuit Court Judge Chris Piazza dismissed the lawsuit last week based on a recent Arkansas Supreme Court ruling, which held that the state cannot be made a defendant in court. Monsanto’s lawsuit argued against the makeup of the state’s Plant Board, which voted to prohibit the company’s product last November. Monsanto also made claims that the state did not consider the economic damage a ban on the herbicide would cause, despite not seeking monetary restitution in court. Beyond Pesticides led a nationwide campaign to urge action by the Arkansas Plant Board to ban dicamba. Dicamba is an herbicide originally registered for use in 1967 to control broadleaf weeds. […]

(Beyond Pesticides, January 30, 2018) New data from the U.S. Geological Survey (USGS) reveals the year-round presence of neonicotinoids (neonics) in the Great Lakes – the world’s largest freshwater ecosystem. Neonics, which are highly toxic to aquatic organisms and pollinators, are prevalent in the tributaries of the Great Lakes with concentrations and detections increasing during planting season. This new data adds to burgeoning demand for a federal ban of these insecticides in order to safeguard vulnerable aquatic ecosystems and pollinators. The study, “Year-round presence of neonicotinoid insecticides in tributaries to the Great Lakes, USA,” sampled ten major tributaries to the Great Lakes from October 2015 to September 2016. Neonicotinoids were detected in every month sampled. At least one neonicotinoid was detected in 74 percent of the samples, with 10 percent of samples containing three neonicotinoids. The most frequently detected neonicotinoid was imidacloprid (53%), followed by clothianidin (44%), thiamethoxam (22%), acetamiprid (2%), and dinotefuran (1%). The detections of clothianidin and thiamethoxam are significantly correlated with the percentage of agricultural land use. Similarly, concentrations increased in the spring and summer months when the planting of neonic-coated seeds and broadcast applications are the highest. For instance, in the agriculturally dominated basin (corn and soybean) […]