(Beyond Pesticides, June 18, 2020) Residential exposure to household pesticide products increases the risk of developing symptoms associated with depression, according to a study published in Environmental Research by researchers at Medical College of Georgia—Augusta University, School of Medicine—Jinan University, and Guangzhou Center for Disease Control and Prevention (CDC), China. Research on pesticide-induced diseases commonly investigates pesticide exposure concerning the development of various physical illnesses, and previous studies show there are occupational risks of developing depression, especially in agriculture where pesticide use is rampant. However, there is a lack of information connecting pesticide exposure to the subsequent psychological (psychiatric) effects on the general population. Additionally, household pesticide exposure varies from occupational exposure via exposure frequency, duration, intensity, and type. This research highlights the significance of researching potential mental health effects resulting from pesticide exposure, especially as society tends to rank mental health risks second to physical health. The study’s scientists note, “Our results highlight the importance of the cautious use of household pesticides because the chronic effects of poisoning may contribute to an elevated risk of depression.”  According to the World Health Organization (WHO), depression affects 322 million people globally, with the number of diagnosed patients increasing by 18.4% from 2005 to 2015. Although the etiology of depression—and […]

(Beyond Pesticides, June 12, 2020) New research finds that western monarch milkweed habitat contains a “ubiquity of pesticides” that are likely contributing to the decline of the iconic species. The research, published in Frontiers in Ecology and Evolution, provides a grim snapshot of a world awash in pesticides, and raises new questions about the U.S. regulatory process that continues to allow these toxic chemicals on to the market without adequate review and oversight. “We expected to find some pesticides in these plants, but we were rather surprised by the depth and extent of the contamination,” said Matt Forister, PhD, a butterfly expert, biology professor at the University of Nevada, Reno and co-author of the paper in a press release. “From roadsides, from yards, from wildlife refuges, even from plants bought at stores—doesn’t matter from where—it’s all loaded with chemicals. We have previously suggested that pesticides are involved in the decline of low elevation butterflies in California, but the ubiquity and diversity of pesticides we found in these milkweeds was a surprise,” Dr. Forister said. The researchers collected over 200 milkweed samples from nearly 20 different sites across the Central Valley of California, as well as from retailers that sell milkweed […]

(Beyond Pesticides, June 9, 2020) EPA has received applications from the states of Maryland, Pennsylvania, and Virginia for the “emergency” use of the bee-toxic neonicotinoid insecticide dinotefuran to control brown marmorated stinkbugs in pome and stone fruits. These three states (and others) have received emergency exemptions for this use for the nine previous years and it must not be allowed for a tenth year. Rather than skirt the regulatory process of review, this use pattern must be subject to EPA registration review in combination with all other neonicotinoid uses. Sign the Petition to EPA and Send a Letter to Your Congressional Representative and Senators: EPA Must Deny Routine “Emergency” Exemptions As a neocotinoid insecticide, dinotefuran presents an alarming hazard to bees and other pollinators. Like other neonicotinoids, it is systemic and can indiscriminately poison any insects feeding on nectar, pollen, or exudates. It is also highly toxic to aquatic invertebrates and soil organisms, as well as being highly persistent. In addition to the serious ecological impacts, dinotefuran is toxic to the immune system. This is, of course, an effect that should avoided during the coronavirus pandemic—when the immune system is under attack. Section 18 of the federal pesticide law (FIFRA—Federal Insecticide, Fungicide, […]

(Beyond Pesticides, June 8, 2020) Brazil is home to more than 300 native bee species — many of them stingless — that help pollinate the nation’s valuable agricultural crops and provide other important environmental services. Yet, chemical-intensive agriculture’s intensive pesticide use and devotion to monocropping are a serious threat to these bees, Mongabay reports. Beyond Pesticides maintains that elimination of such pesticides is key to protecting critical pollinators, ensuring a nontoxic food supply, supporting ecosystems and biodiversity, and ensuring safe working conditions for agricultural workers and safety for rural residents. Organic, regenerative agricultural practices, which often avoid monocropping, achieve all of these important goals. Advocates maintain that a transition to such practices is imperative in ensuring a far less toxic future for humans, other residents of Planet Earth, and Nature itself. The Brazilian Platform for Biodiversity and Ecosystem Services estimates the financial value of pollinators in Brazil, which include bees, moths, bats, butterflies, wasps, beetles, and other organisms, at roughly $8 billion annually. Most honey production in Brazil (and globally) comes from one species, Apis mellifera — a hybrid of European and African species that arrived in the Americas in the early 17th century. A. mellifera is still the dominant […]

(Beyond Pesticides, June 2, 2020) During the April meeting of the National Organic Standards Board (NOSB), there was near-unanimous sentiment expressed by NOSB members and stakeholders that the failure of the National Organic Program at USDA to act on NOSB recommendations regarding so-called “inert” ingredients hurts organic producers and consumers and the environment. The NOSB has only one alternative left to force USDA action—denying relisting at the Fall meeting. Tell the National Organic Program and USDA Secretary Sonny Perdue to initiate action to begin NOSB review of “inerts” now. Dr. Asa Bradman, who summarized the issue for the NOSB at the Spring 2020 meeting, is an expert in environmental health, and as part of his day job, leads studies focusing on pesticides, flame retardants, metals, emerging pollutants, VOCs, indoor air quality and other contaminants. As he said at the meeting, “These are often active ingredients.” In fact, the ingredients not listed on a label of a pesticide product—which are not fully reviewed for their adverse effects—may be the most toxic chemicals in the formulation. Recent research, Toxicity of formulants and heavy metals in glyphosate-based herbicides and other pesticides (Toxicology Reports 5, 2018), by Defarge, de Vendômois, and Séralini demonstrates the need to […]

(Beyond Pesticides, May 27, 2020) Research published last week in the journal Scientific Reports uncovers new ways that neonicotinoid (neonic) insecticides hamper the growth and development of honey bee colonies. As new data on the link between neonics and pollinator declines continues to flow from academic institutions, the U.S. Environmental Protection Agency (EPA) has re-opened the public comment period on its proposal to renew the registration of these highly toxic insecticides. The present study, led by German scientists at Goethe University Frankfurt am Main, uses new video techniques to observe the behavior of honey bees behind a glass-pane hive. Researchers filmed their study from start to finish, focusing on the effect of chronic sublethal doses of the neonciotinoids clothianidin and thiacloprid. Colonies were fed these chemicals in a sugar syrup over the course of three weeks in May and June. Even at low levels, scientists found significant changes to brood rearing and development, and the behavior of nurse bees. Nurse bees play a pivotal role in honey bee colonies. These young worker bees clean out old brood cells (where larvae develop), feed larval bees after a queen lays its eggs, and finish by capping a brood cell with wax. Within […]

(Beyond Pesticides, May 26, 2020) Across the pond, the European Commission (EC) has announced plans to protect biodiversity and build a more sustainable food system, and identified the reduction of pesticide use  and the expansion of organic agriculture as pillars of the scheme. The EC expects that the initiative, which will require EU member states’ endorsement, will advance progress on the EU goal of eliminating greenhouse gas emissions by 2050, given that 10% of emissions arise from the agricultural sector. The EC’s goals are important and laudable, but Beyond Pesticides is clear: reduction of pesticide use in service of them is not an adequate strategy to ensure long-term success. Genuine success requires the elimination of the use of synthetic chemical pesticides, fertilizers, and other toxic inputs, and the transition to agricultural and land management systems that work with nature, rather than fight against it. Regenerative, organic practices are the path to a livable future, according to Beyond Pesticides. The EC, which is the executive branch of the EU, expects its plan to reduce use of pesticides by 50% by 2030; reduce use of antimicrobial chemicals, including antibiotics, in fish and animal farming by 50%; dedicate a minimum of 25% of arable […]

(Beyond Pesticides, May 22, 2020) For years, USDA has been looking the other way as giant corporate agribusinesses, primarily producing conventional eggs and poultry, have squeezed family-scale farmers out of the market and misled and defrauded consumers. Due to a lawsuit challenging the Trump administration on the scuttling of new rules that would make it harder for factory farms to qualify for organic status, USDA is seeking input on what was previously an error-filled and biased economic assessment of the rulemaking. Please sign the letter by noon on Tuesday, May 26, to include your voice in our response to the official proceedings. If you would prefer to write your own custom comment you can submit it on Regulations.gov. Letter to National Organic Program (Jenny Tucker, Ph.D. To the National Organic Program: Please include my comment below in evaluating the economic analysis report pursuant to the Organic Livestock and Poultry Practices rulemaking. Docket number: AMS-NOP-20-0037 Both the current and previous OLPP analyses include the following misstatements and omissions: It is a misconception to refer to, and judge, the economic impacts of the OLPP as if the requirement for outdoor access was a new and onerous regulation. In fact, from the beginning of the USDA organic […]

(Beyond Pesticides, May 21, 2020) Use of the herbicide dicamba increases humans’ risk of various acute and chronic cancers, according to research published in the International Journal of Epidemiology by the National Institutes of Health (NIH). Many pesticides are “known or probable” carcinogens (cancer-causing agents), and their widespread use only amplifies chemical hazards, adversely affecting human health. However, past research lacks comprehensive information regarding human health effects associated with long-term pesticide use. This study highlights the significant role that long-term research plays in identifying potential health concerns surrounding registered pesticides, especially as the Environmental Protection Agency (EPA) plans to reaffirm its decision to allow dicamba use on genetically engineered (GE) crops. Nathan Donley, Ph.D., a scientist with the environmental health program at the Center for Biological Diversity, comments: “This sweeping study exposes the terrible human cost of the EPA’s reckless decision to expand the use of dicamba. […]For the EPA to approve widespread use of this poison across much of the country without assuring its safety to people and the environment is an absolute indictment of the agency’s persistent practice of rubber-stamping dangerous pesticides.” Dicamba—a benzoic acid chemical that controls broadleaf weeds—is one of the most widely applied herbicides in corn production. As a result of weed resistant to […]

(Beyond Pesticides, May 19, 2020) The California Department of Food and Agriculture (CDFA) is taking public comments on a proposal to establish statewide comparable-to-organic standards for cannabis production. Although cannabis remains illegal at the federal level, and thus cannot be labeled with the U.S. Department of Agriculture (USDA) certified organic seal, there is no prohibition on a state-specific program that follows federal organic requirements, but does not use the word “organic.” While such a program has the potential to provide another level of protection for medical patients, questions and concerns remain over the allowance of certain products, and the impact the certifying scheme may have on the future trajectory of the cannabis production industry. Under the Medicinal and Adult-Use Cannabis Regulation Safety Act, passed in 2017 after the success of Proposition 64 by California voters, state agencies were tasked with establishing a state-level program to certify cannabis to the standards set out by USDA’s National Organic Program (NOP). CDFA is required to finalize this program for cannabis production by the start of 2021, while the California Department of Public Health will create a separate program to certify manufactured cannabis products. As outlined by CFDA, cannabis would be certified through third-party […]

(Beyond Pesticides, May 11, 2020) Protecting ourselves from Covid-19 requires not only that we avoid contact with the virus, but also that we avoid exposing ourselves to chemicals that may disrupt our immune or respiratory systems. But when it comes to pesticide products—and disinfectants are pesticides—we encounter once again the problem of so-called “inert,” or nondisclosed, ingredients. Tell EPA and Congress that ALL Ingredients in Pesticides Must Be Disclosed. “Inert” ingredients are not necessarily chemically or biologically harmless. “Inert” or “other” ingredients—as distinguished from “active” ingredients—are generally the majority of the product formulation that makes up the liquid, spray, dust, or granule, but does not specifically attack the pest, according to the manufacturer. They include emulsifiers, solvents, carriers, aerosol propellants, fragrances, and dyes. Many “inerts” are quite toxic, and may be “active” ingredients in other products. “Inert” ingredients may also be described as “adjuvants” or “formulants.” “Inerts” are typically not listed on the label, and hence are often called “secret ingredients.” Beyond Pesticides reviews the disinfectants on EPA’s List N, which are approved for use against the novel coronavirus, but it is only possible to review the active ingredients. One product on the list, for example, contains 99.7784% “other ingredients.” Unfortunately, although this product may […]

(Beyond Pesticides, May 1, 2020) As the globe settles in for a long summer of social distancing to prevent the spread of COVID-19, experts warn that concentrated animal feeding operations (CAFOs), more commonly referred to as “factory farms,” are setting the table for the next pandemic. Crowded conditions and prophylactic use of antibiotics, scientists say, are creating an environment ripe for viruses and bacteria to evolve and jump from animal to human populations. The Food and Agriculture Organization of the United Nations said back in 2013, “Livestock health is the weakest link in our global health chain.” Alternatively, organic principles offer an existing federal guideline for ecologically and environmentally viable conditions for agriculture. Michael Greger, M.D., Ph.D., author of Bird Flu: A Virus of Our Own Hatching, explains, “When we overcrowd animals by the thousands, in cramped football-field-size sheds, to lie beak to beak or snout to snout, and there’s stress crippling their immune systems, and there’s ammonia from the decomposing waste burning their lungs, and there’s a lack of fresh air and sunlight — put all these factors together and you have a perfect-storm environment for the emergence and spread of disease.” Dr. Greger notes that the spread of […]

(Beyond Pesticides, April 30, 2020) Chemical-intensive farming of crops for animal fodder powers the global market for highly hazardous pesticides (HHPs), according to data analyzed by Unearthed, and the Swiss NGO Public Eye. Animal fodder production not only intensifies global pollution, but it also increases pesticide exposure and degrades human, animal, and environmental health. This data analysis supports advocates advancing pesticide policies to eliminate HHPs by identifying which toxic chemicals lead global pesticide sales. However, it will take more than eliminating the worst chemicals to address the impending biodiversity collapse and the climate crisis, according to experts who point to the need for an urgent shift to organic land and agricultural management practices. United Nations’ (UN) special rapporteur on toxic substances and human rights, Baskut Tuncak, says, “There is nothing sustainable about the widespread use of highly hazardous pesticides for agriculture. Whether they poison workers, extinguish biodiversity, persist in the environment, or accumulate in a mother’s breast milk, these are unsustainable, cannot be used safely, and should have been phased out of use long ago.”  Unearthed and Public Eye investigated over $23 billion in global pesticide market sales to determine the proportion of pesticides considered highly hazardous by the Pesticide Action Network’s […]

(Beyond Pesticides, April 28, 2020) Roughly a quarter of the global insect population has been wiped out since 1990, according to new research published in the journal Science. Billed as one of the most comprehensive assessments to date, the study finds significant overall insect declines, but notes of some specific bright spots. While variation in the ongoing crisis is to be expected, ultimately the trends in the data show the need for immediate policy and regulatory action to protect the insect world as the foundation of global food webs. The team of European scientists behind the research analyzed 166 studies spread out over 41 countries, and consisting of over 1,600 sites, with data beginning in the mid-1920s. Overall trends found declines in terrestrial insect biomass to be nearly 1% each year (~9% each decade). However, contrasting this data was a bright spot – freshwater insects were found to be increasing at an annual rate just over 1% (~11% each decade). The authors caution, however, that because fresh water covers only 2.4% of the earth’s surface, the increase may not be a good spatial representative of broader trends. While North America appeared to show more significant declines when compared to Europe, […]

(Beyond Pesticides, April 23, 2020) Pesticide spray drift from adjacent farmlands expose butterfly larvae to lethal pesticide concentrations, according to research published in Environmental Toxicology and Chemistry by Iowa State University (ISU). Lack of previous experimental pesticide toxicity data makes it unclear as to what degree insecticides impact monarch butterfly (Danaus plexippus) productivity in milkweed (Asclepias spp.) habitats near pesticide-treated pasture. This study adds weight to the idea that pesticides are playing a role in the ongoing decline of this iconic butterfly, as researchers find insecticide drift from adjacent fields to be strongly associated with larval mortality. Future monarch butterfly conservation efforts should consider risks stemming from pesticide exposure when developing butterfly rehabilitation efforts, according to advocates. As co-author Niranjana Krishnan (ISU graduate student) states, “In order to make the best decisions about how and where to plant milkweed, we first need to find basic toxicity and exposure data.”  ISU researchers established monarch butterfly colonies by collecting larvae from roadside milkweeds, which they then reared in the laboratory for incubation. To analyze the relative toxicity of various insecticides on monarch butterflies, researchers applied normal field-application rates of each pesticide at different larval development stages. Scientists used a bioassay to measure the […]

In 1962, Rachel Carson said we stood at a crossroads: “The road we have long been traveling is deceptively easy, a smooth superhighway on which we progress with great speed, but at its end lies disaster. The other fork of the road — the one less traveled by — offers our last, our only chance to reach a destination that assures the preservation of the earth.” Eight years later, on April 22, 1970, the first Earth Day encouraged collective action for conservation. Now, in the midst of a pandemic and cascading environmental crises (arguably, down the road of disaster), forging a new path toward restoration will take courage and imagination. This Earth Day, Beyond Pesticides is putting forth a toolkit to abandon half measures and forge ahead with an organic approach for repairing human health and the environment. LISTEN TO SCIENCE Biodiversity is plummeting worldwide. The climate crisis looms even as COVID-19 grabs headlines. Environmental pollution is a predictor of coronavirus death. Never has it been more obvious that the global community is interconnected, and enforcing preventative measures is critical before it is too late. Meanwhile, the Trump Administration’s Environmental Protection Agency (EPA) ignores science, moving ahead with deregulation to […]

(Beyond Pesticides, April 20, 2020) As USDA takes public comments on its updated dietary guidelines, it important that sustainable, regenerative organic food production practices are an integral part. Since 1990, Congress has required an every-five-years review of its Dietary Guidelines — recommendations intended to promote public health and prevent chronic diseases. The next review and a draft updated version, the 2020–2025 Dietary Guidelines for Americans, is currently underway. USDA says that the dietary guidelines provide “information that helps Americans make healthy choices for themselves and their families.” In order to make healthy food choices, the guidelines must go beyond the traditional parameters to include how the food is produced. How food is produced affects the health of Americans not only as a result of the nutritional quality of the food, but also due to environmental contamination. Sign the petition to USDA and send a letter to Congress. Tell them that organic food must be emphasized in new dietary guidelines. Although research on the nutritional density of organic produce is equivocal, showing some higher levels of antioxidants, results are decidedly clear for animal products. Pastured organic animal products—including beef, lamb, pork, dairy, poultry, and eggs—have been shown to be superior to that of products of […]

(Beyond Pesticides, April 16, 2020) Pesticide exposure in farmland birds is a concomitant of pesticide-treated muesli (cereal) seed commonly planted during winter months, according to research published in Science of the Total Environment by United Kingdom (UK) scientists. Not only do pesticide-treated seeds pose the highest dietary risk to birds, but pesticide-treated seeds also go underreported as farmers often lack knowledge of what pesticides are on the seeds they plant. This study emphasizes the global effects of treated seeds, and their corresponding pesticide exposure, on bird species. Future risk assessments for bird should address these implications when implementing agricultural pesticide policies.  Farmers use of treated seeds exposes farmland birds to pesticides like neonicotinoids (neonics), including clothianidin (CLO). Pesticide residues then accumulate in the birds’ blood. UK scientists examined pesticides in farmland bird blood samples to connect the field-based use of treated seeds to clothianidin exposure patterns. At the time of this study, CLO was the most widely used pesticide on treated winter cereal seeds in the UK. Scientists recorded the presence of neonicotinoid-treated seed in 39 fields of 25 farms after seeding. Camera traps monitored farmland birds’ seed consumption. To measure CLO concentration in treated seed and seedling, scientists used liquid chromatography-tandem mass spectrometry to identify inorganic, organic, […]

(Beyond Pesticides, April 13, 2020) Since 1990, Congress has required an every-five-years review of its Dietary Guidelines — recommendations that are supposed, minimally, to promote public health and prevent chronic diseases. The next review and a draft updated iteration, the 2020–2025 Dietary Guidelines for Americans, are currently underway. The Union of Concerned Scientists (and several colleagues) have examined recent studies on dietary patterns and sustainability; their analysis reveals that the current federal guidelines on diet are unlikely to support sustainability of the food system in the long-term. Beyond Pesticides concurs, and maintains that a transition to sustainable, organic, regenerative agriculture is the path to both improved human health and long-term sustainability of the natural world essential to life. The Union of Concerned Scientists’ (UCS’s) report — In Support of Sustainable Eating: Why U.S. Dietary Guidelines Should Prioritize Healthy People and a Healthy Planet — identifies this next version of the federal guidelines as a critical opportunity to shift the direction of the U.S. food and agricultural system toward far greater sustainability. UCS asserts that such a shift is beyond due: the food system in the U.S. has huge environmental impacts on pollution, use of chemical pesticides, biodiversity, and emissions that significantly […]

(Beyond Pesticides, April 9, 2020) Honey bees (Apis mellifera) remain in severe decline, with U.S. beekeepers losing 30% of their managed colonies each year. A Texas A&M University (Dr. Juliana Rangel’s laboratory)  study provides evidence that chemical-intensive farming practices contaminate honey bee hives with pesticides that cause developmental delays. Researchers found that toxic pesticides adversely affect honey bee queen physiology and worker bee performance. Moreover, pesticides exacerbate the health risks associated with the declining honey bee population. When maturing honey bees’ exposure to pesticides is limited, there is an improvement in honey bee queen health and colony behavior. In agricultural settings, honey bees are exposed to an amalgamation of pesticides. AAFC and Texas A&M researchers determined which pesticides (miticides, insecticides, and fungicides) are commonly used in combination and then used those pesticide combinations to expose honey bees to field-realistic doses in the lab: tau-fluvalinate and coumaphos, amitraz, or chlorothalonil and chlorpyrifos. Researchers cultivated maturing honey bee queens in plastic cups coated with either pesticide-free or pesticide-contaminated beeswax. Honey bee queens were transferred into hives upon maturation and bred naturally. Researchers measured their egg-laying frequency along with worker bee entourage size. Post-reproduction, scientists performed a bioassay (a measurement of substance potency or concentration effects on living cells) on […]

(Beyond Pesticides, April 8, 2020) We are deeply concerned about the impact of COVID-19 on organic farmers, farmworkers, businesses, certifiers and inspectors, and consumers. We are mindful of the need to protect the health and safety of all who are involved in organic agriculture, certification, and compliance. We also seek to advocate for responsible actions that will protect the integrity of the USDA organic seal during this difficult time. Send a message to USDA Secretary Sonny Perdue asking for support to organic farmers, farmworkers, businesses, certifiers and inspectors, and consumers. The recently enacted CARES Act includes a $9.5 billion emergency fund: “to prevent, prepare for, and respond to coronavirus by providing support for agricultural producers impacted by coronavirus, including producers of specialty crops, producers that supply local food systems, including farmers markets, restaurants, and schools, and livestock producers, including dairy producers.” It is critical that organic farmers and others in the organic community are included in the emergency response actions taken by USDA. Beyond Pesticides, as a member of the National Organic Coalition (NOC), is asking USDA Secretary Perdue to take action to support USDA organic through the coronavirus pandemic.  Please note, our form letter to Secretary Perdue is close to the […]

(Beyond Pesticides, April 1, 2020) Your comments are due by Friday, April 3, end of day. The National Organic Standards Board (NOSB) meets April 29-30 online to debate issues concerning what goes into your organic food. Lend your voice to continuous improvement by learning about issues and submitting comments. From the very beginning, with the passage of the Organic Foods Production Act in 1990, “organic” has meant “continuous improvement.” The primary mechanism for continuous improvement in organic production is the high level of public involvement that comes from twice-annual meetings of the stakeholder board. The second mechanism is the sunset process, which helps move synthetic substances out of organic production as the market invests in growing organic inputs and ingredients. Despite USDA’s efforts to weaken the sunset process, the 5-year cycle of review of every synthetic substance currently used in organic production and processing, offers us an opportunity to keep organic strong and strengthen any weaknesses. Items on the NOSB agenda in April include materials allowed in organic production, as well as discussion of policies and sunset materials on which the NOSB will vote in the Fall. We have identified some priority issues of both kinds. The only voting issue on […]

(Beyond Pesticides, March 31, 2020) Adding to the widespread and problematic use of neonicotinoid pesticides as seed treatments, a recent study published in BioScience finds that there are significant knowledge gaps among some farmers about the seeds they are planting. The research indicates that those gaps contribute to underreporting of accurate data on the use of pesticide-coated (often with neonicotinoid pesticides) seeds — because farmers may not know what pesticides are on the seeds they plant. Pennsylvania State University reports on the study, in Phys.org, saying, “This lack of data may complicate efforts to evaluate the value of different pest management strategies, while also protecting human health and the environment.” Beyond Pesticides advocates for widespread adoption of organic, regenerative systems and practices that precludes the use of such pesticides.  The research was conducted by a team of scientist from around the U.S., led by Claudia Hitaj, PhD, of the Luxembourg Institute of Science and Technology, and former economist at USDA’s Economic Research Service. In the Phys.org coverage of the study, assistant professor of epidemiology and crop pathology at Penn State, Paul Esker, PhD, notes that this lack of farmer knowledge can lead to overuse of pesticides, which would increase the already considerable risks […]