(Beyond Pesticides, December 14, 2023) It has been reported that the U.S. Environmental Protection Agency (EPA) is again considering allowing the use of the highly neurotoxic, carbamate insecticide aldicarb for use in Florida citrus, 13 years after the agency and the chemical’s manufacturer, Bayer Crop Science, announced that it was being banned (technically voluntarily canceled). A version of the current EPA proposal and the resource-intensive review process in EPA’s Office of Pesticide Programs—all being done at taxpayers’ expense—was rebuffed, first by the Florida Department of Agriculture and Consumer Services (April 2021), then by a U.S. Court of Appeals (June 2021). Internal EPA emails, as reported in The New Lede (November 21, 2023), expose the extent to which the agency’s science and political staff have tried to downplay aldicarb’s adverse health and environmental outcomes in order to meet the EPA’s broad, and often described as loose, risk parameters.  This Daily News piece on aldicarb is part of an ongoing story of the politicization of science by political appointees to an agency that is charged with protecting public health and the environment. The degree to which agency scientific staff are complicit in advancing agency positions that are not supported by the scientific […]

(Beyond Pesticides, December 8, 2023) Nine pesticides have been found in nearly 40% of nonorganic conventional baby foods tested, according to a study conducted by Environmental Working Group (EWG). The study found no residues of the pesticides studied in a sample of certified organic baby food. While the study finds no traces of the highly neurotoxic insecticide chlorpyrifos, associated with brain damage in children, the chemical has been allowed back on the agricultural market after being removed in 2021—raising an alarm for parents who purchase baby food with ingredients grown in chemical-intensive (“conventional”) agriculture. In November 2023, a three-judge panel of the Eighth Circuit Court of Appeals reversed a 2021 U.S. Environmental Protection Agency (EPA) decision to ban chlorpyrifos’ agricultural uses, which came after a 2021 Ninth Circuit Court of Appeals decision found that the agency’s inaction violated federal pesticide law. Because of its neurotoxic effects on children, EPA had in 2000 negotiated Dow Chemical’s voluntary cancellation of most residential uses of the chemical, but left virtually all of the chemical’s agricultural uses in place. While the EWG study focuses on pesticide residues in food and the hazards associated with ingestion of dangerous chemicals, raising alarms, purchasing baby food processed with nonorganic […]

(Beyond Pesticides, December 7, 2023) A new review published in Ecotoxicology reiterates what past studies have repeatedly stated: the herbicide paraquat (PQ) has profound adverse effects on wildlife at environmentally relevant concentrations. Moreover, these adverse effects span beyond the wilderness, as exposure to this highly toxic herbicide also impacts the health of people working with this chemical (e.g., pesticide applicators) or living adjacent to areas of chemical use. Current data gaps regarding the effects of environmentally relevant concentrations and exposure times, population- or ecosystem-level effects, and biomagnification potential contribute to the uncertainty of predicting risk from environmental PQ exposure. Furthermore, Beyond Pesticides has previously pointed out deficiencies in the U.S. Environmental Protection Agency’s (EPA) ecological risk assessments for paraquat, highlighting failures to perform complete evaluations of the impacts of pesticides on threatened and endangered species. All this occurs amid documented threats to biodiversity from the combined effects of pesticides and climate change.  The review investigated paraquat in the environment, the chemical’s toxicity to nontarget species, and significant data gaps. Overall, the long-term risks of environmental PQ contamination for human and ecological communities can be challenging since the potential chronic effects from extended use are nearly unstudied. Most concerning is that PQ is […]

(Beyond Pesticides, December 6, 2023) A study published in Antioxidants finds prenatal and early life exposure, usually after birth (perinatal), to glyphosate-based herbicides (GBH) induce oxidative stress in the brain, causing damage and negatively affecting melatonin levels. Melatonin is a hormone responsible for regulating circadian rhythm to mitigate sleep disorders. Disruption of melatonin levels also has implications for the development of age-associated neurodegenerative diseases, as melatonin is a neuroprotector against neurodegenerative diseases associated with aging. Additionally, GBH can alter molecules in the pineal gland in the brain, resulting in neurodegenerative diseases like Alzheimer’s disease (AD) and Parkinson’s disease (PD). Levels of inadequate sleep patterns are rising among the global population. Reports find variability in sleep duration results in higher rates of depression, anxiety, and fatigue. Since sleep is an essential factor in normal brain development, disturbance in sleep patterns, such as sleeping too much or too little, can result in long-term associations with the brain’s white matter integrity (responsible for age-dependent cognitive function). The study warns, “Since decreased levels of the important antioxidant and neuroprotector melatonin have been associated with an increased risk of developing neurodegenerative disorders, this demonstrates the need to consider the melatonin hormone system as a central […]

Upcoming EPA Review of Nitrates in Waterways Raises Health and Environmental Questions About Synthetic Nitrogen Fertilizer Use. In  a quiet reversal of a 2018 Trump administration decision, EPA is resuming an evaluation of the health impacts of nitrate in water, reflecting the long-standing and mounting evidence of synthetic nitrogen’s adverse effects on human health and the environment, particularly in vulnerable communities.

(Beyond Pesticides, December 1, 2023) Even though researchers have noted since the 1970s that human fertility appears to be declining globally, doubt is still circulating that it is really happening and that pesticides could have anything to do with it. Very recently published studies, however, make it clear that, even without exact elucidation of the mechanisms by which pesticides damage male fertility, there is an unmistakable association of pesticides and many aspects of male reproductive health. One of the new studies, a meta-analysis of 25 studies on the connection between pesticides and male reproductive problems, finds that men exposed to organophosphate (such as glyphosate and malathion) and carbamate (such as carbaryl and methiocarb) insecticides have lower sperm concentrations than the general population. This is especially true of men exposed in work settings. The senior author of the study, Melissa J. Perry,ScD of the George Mason University College of Public Health, told HealthNews, “The evidence available has reached a point that we must take regulatory action to reduce insecticide exposure.” Human infertility is defined as “the failure to achieve pregnancy after 12 months or more of regular unprotected sexual intercourse.” Most public attention regarding infertility focuses on women’s difficulties in getting […]

(Beyond Pesticides, November 27, 2023) The waters of the United States are again under attack by the U.S. Congress. After the chemical industry and pesticide users won a major victory in the U.S. Supreme Court that limits the definition of protected waterways in May, 2023, a member of the U.S. House of Representatives introduced legislation that would ease restrictions of pesticides that could contaminate the remaining waterways protected under the Clean Water Act. Capitol Hill watchers expect the bill’s supporters will try to attach it to the 2023 Farm Bill. The legislation, the Reducing Regulatory Burdens Act, HR 5089, was introduced in the House of by Rep. David Rouzer (R-NC) in July. It would reverse a U.S. Environmental Protection Agency (EPA) requirement to obtain a permit before spraying pesticides on or near waterways. This is a repeat of HR 953, which passed the House and failed to pass the Senate in 2017. The House had passed similar legislation in 2011 amending the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Clean Water Act (CWA) to eliminate provisions requiring pesticide applicators to obtain a permit to allow pesticides or their residues to enter waterways. CWA was adopted “to restore and maintain the chemical, physical, and biological […]

(Beyond Pesticides, November 21, 2023) According to a study in the Scientific Reports Journal, plant-forward diets might increase exposure to pesticide residues compared to meat-heavy diets. However, a switch to organic plant-based options significantly reduces this risk, with a separate research study indicating that vegetarians and vegans—often favoring organic products—are generally less exposed to synthetic pesticides than omnivores. The study also corroborates other research emphasizing the environmental benefits of plant-based diets, advocating for policies that make organic plant-based foods more widely accessible and emphasizing their crucial role in enhancing both environmental and human health.   Plant-based diets are increasingly popular—and with good reason. The intensification of animal agriculture is a major cause of deforestation, greenhouse gas emissions, and high water usage. In particular, Brazil accounts for one-third of global tropical deforestation, with 80% of this deforestation in the Amazon due to cattle ranching. Additionally, animal products like fish, eggs, and meat, responsible for about 83% of land use, supply only 37% of the global protein. Numerous studies suggest that reducing meat and animal product consumption can significantly mitigate environmental impacts, particularly regarding land use and greenhouse gas emissions. However, managed grazing in organic animal agriculture reduces many of the hazards […]

(Beyond Pesticides, November 15, 2023) A study previously published in the Federation of American Societies for Experimental Biology (FASEB) is drawing renewed attention to the gut microbiome in the scientific community. The study, involving a team including Demetrio Sierra-Mercado, PhD, of the University of Puerto Rico School of Medicine, initially established a link between glyphosate exposure and increased anxiety and fear-related behavior in rats. Glyphosate, a widely-used herbicide, has been detected in trace amounts in fruits, vegetables, grains, and other food and beverages, according to the U.S. Environmental Protection Agency (EPA). Originally deemed safe for humans due to the way it interacts with the shikimic acid pathway—a metabolic route that is absent in humans—glyphosate’s indirect effects on human health are now under scrutiny as the research linking it to anxiety-like behavior grows.  Dr. Sierra-Mercado’s team is expanding on his previous research to take a closer look at the compound’s potential disruption of the gut microbiome, which plays a pivotal role in regulating both physical and mental health. His upcoming study, anticipated in August 2024, aims to delve into the intricate relationship between glyphosate exposure and the gut-brain axis, with a focus on how this may influence neurological and emotional health […]

(Beyond Pesticides, November 14, 2023) One of the Environmental Protection Agency’s (EPA) strongest tools for avoiding responsibility is delay—a tactic that kept cancellation of the neurotoxic pesticide chlorpyrifos at bay for 21 years—until May 2021, when a three-judge panel of the Ninth Circuit Court of Appeals, responded to a petition filed in 2007 by the Natural Resources Defense Council, Pesticide Action Network, and numerous other groups. The Ninth Circuit ordered the agency to quit lollygagging and acknowledge chlorpyrifos’s threat to human health, something the agency had acknowledged already. The Ninth Circuit instructed EPA to either revoke the “safe” tolerances the agency had set for chlorpyrifos’s residue in various foods or demonstrate that they are actually safe. Finally capitulating, EPA issued a final rule in August 2021 revoking all food tolerances for the neurotoxicant. Tell your governor and mayor to adopt policies that support organic land management.  This looked like progress until February 2022, when a different set of petitioners—pesticide companies, U.S. farmer groups, and other countries’ agricultural interests—filed an action in the Eighth Circuit Court of Appeals. On November 3 of this year, a three-judge panel of the Eighth Circuit reversed EPA’s decision, thereby neutralizing the Ninth Circuit’s opinion. Chlorpyrifos, […]

(Beyond Pesticides, November 13, 2023) The news of a federal Appeals Court’s reversal of a U.S. Environmental Protection Agency (EPA) decision in early November calls into question the value of the basic structures, processes, and authorities of pesticide law that the public has been told are protective of health and the environment. After decades of review and litigation, this reversal, especially on a highly neurotoxic insecticide like chlorpyrifos, identifies a fundamentally flawed system that does not protect the health of people, in this case, children’s brains. >>Tell your governor and mayor to adopt policies that support organic land management.  It was EPA’s finding that chlorpyrifos was destructive of the nervous system, particularly in children, and the functioning of the brain that led to an EPA-negotiated chemical company (Corteva/Dow Chemical) settlement in 1999 (took effect in 2000) that removed residential uses of chlorpyrifos from the market. The 2020 EPA decision, 21 years later, to stop agricultural uses followed another Appeals Court decision, departing from the agency’s usually long drawn-out negotiations that ultimately compromise health and the environment. EPA banned agricultural uses of chlorpyrifos in 2016 in the Obama Administration, but the decision was reversed by the Trump Administration in 2017. Because […]

(Beyond Pesticides, November 10, 2023) In a press conference this week just prior to Veteran’s Day, Department of Veterans Affairs Secretary Denis McDonough affirmed the federal government’s medical support for veterans exposed to toxic chemicals during their service in the military under a law passed last year entitled The Sergeant First Class Heath Robinson Honoring Our Promise to Address Comprehensive Toxics Act of 2022, or PACT Act. The law, passed in August 2022, identifies specific diseases as “presumptive conditions” caused during specified military service. The passage of the law is a tribute to veterans and the public uproar just over one  year ago that demanded that the U.S. Congress recognize and treat diseases caused by toxic chemical exposure during military service. The passage of the PACT Act in 2022 was controversial and first blocked by Republicans in the Senate, but public outrage and high profile support from comedian and activist Jon Stewart ultimately led to final passage. Senate Majority Leader Chuck Schumer (D-NY) said, “For too long, our nation’s veterans have faced an absurd indignity: They enlisted to serve our country, went abroad in good health, and came back home only to get sick from toxic exposure endured while in […]

(Beyond Pesticides, November 9, 2023) Two-hundred-foot pesticide spray “buffer zones” around 4,028 U.S. elementary schools contiguous to crop fields—according to data evaluated by Environmental Working Group—are threatened by potential Farm Bill amendments now under consideration. Legislative language, if adopted, would take away (preempt) the authority of states and local jurisdictions to protect children and restrict agricultural pesticides used near schools. Pesticide drift is a widespread problem throughout the U.S. that has attracted national attention in recent years because of crop damage caused by the weed killer dicamba in numerous midwestern states. In the face of the U.S. Environmental Protection Agency’s (EPA) failure to mitigate drift hazards, states enact limits on when and how pesticides can be used, establish buffer zones around application sites, and in some cases, ban uses. In 2018, Arkansas banned dicamba use from mid-April through the end of October (and survived a Monsanto challenge to the ban. For a historical perspective on the drift issue, see Getting the Drift on Pesticide Trespass. Children, in particular, face unique risks from pesticide and toxic chemical exposures. Due to their smaller body size, they absorb a higher relative amount of pesticides through the food they consume and the air they breathe. Additionally, children’s developing […]

(Beyond Pesticides, November 8, 2023) A study published in Environmental Science and Pollution Research finds organophosphate pesticides (OPs) are linked to an increased asthma prevalence. The study was released just before an 8th Circuit U.S. Court of Appeals November 3 decision vacating EPA’s 2021 decision to cancel all food tolerances for chlorpyrifos and sending it back to the agency. (Required by a 9th Circuit Court of Appeals decision in April 2021 to take action, EPA issued a final rule in August, 2021—in full effect February 28, 2022—after an earlier 9th Circuit decision, concluding that, “EPA is unable to conclude that the risk from aggregate exposure from the use of chlorpyrifos meets the safety standard of the Federal Food, Drug, and Cosmetic Act (FFDCA). Accordingly, EPA is revoking all tolerances for chlorpyrifos.”  Using urinary metabolites of OPs, the study highlights that diethyl phosphate (DEP, the breakdown chemical of chlorpyrifos) has the strongest association with asthma. However, individual and combined exposure to all OPs have a significant link to respiratory disease. The respiratory system is essential to human survival, regulating gas exchange (oxygen-carbon dioxide) in the body to balance acid and base tissue cells for normal function. Damage to the respiratory system can […]

(Beyond Pesticides, November 7, 2023) Two decades after the introduction of genetically engineered, herbicide-resistant crops and the consequential exponential growth in weed killers, Brazil is seeing an increase in childhood cancer. This is the conclusion reached in a comprehensive study spanning 15 years (2004-2019), “Agriculture Intensification and Childhood Cancer in Brazil,” published in Proceedings of the National Academy of Sciences (PNAS) in October. For the past 20 years, soybean herbicides have been killing and sickening children in the Cerrado and Amazon regions–where soybean cultivation is concentrated. The study reveals a link between an increase in soy cultivation and a spike in cases of acute lymphoblastic leukemia (ALL), the most common cancer affecting children, among indirectly exposed populations. Researchers identify pesticide-contaminated drinking water as the driving force behind the increased cancer rates occurring downstream from soybean sites.  In 2003, Brazil legalized its first official genetically modified (GM) crop, welcoming the era of GM soybeans and sparking a radical transformation in its agricultural landscape–for better or worse. The introduction of Monsanto’s Roundup Ready soybean seed promised farmers an efficient and herbicide-resistant alternative to traditional crops. A significant shift occurred in the areas dedicated to soy cultivation in the Cerrado region, tripling from […]

(Beyond Pesticides, November 3, 2023) California joined 10 other states that have laws partially restricting use of bee-toxic neonicotinoid (neonic) insecticides with the enactment of CA AB 363 into law in October, 2023.  California’s new law will ban over-the-counter sales of lawn and garden neonics by 2025, limiting their use to licensed pesticide applicators. The legislation gives the state’s Department of Pesticide Regulation (CA EPA) until June 30, 2029 to take broader action on neonics, if it determines restrictions are necessary. CA 363 will take neonics out of the hands of homeowners, while allowing lawn care companies to continue use. The California law falls short of the strongest state laws in Nevada, New Jersey, and Maine that eliminate all outdoor (nonagricultural) uses of these chemicals, even by lawn care companies. In June, 2023 Nevada became the third state to ban lawn and garden uses of neonics, while Colorado prohibited homeowner use of land and garden neonic products, similar to laws in Maryland, New York, Massachusetts, Rhode Island, and Vermont.  Minnesota recently banned neonic use on state lands and granted its home-rule subdivisions the authority to ban “pollinator-lethal pesticides” (those with bee warning labels) under its state law preempting local authority […]

(Beyond Pesticides, November 1, 2023) A study published in Environmental Health Perspective finds the risk of acute childhood leukemia (AL), specifically acute lymphoblastic leukemia (ALL), slightly increases with exposure to pesticides (i.e., insecticides and herbicides) from uses on vines, a crop subject to intensive pesticide use. Within 1 kilometer [km] of vineyards, the risk of ALL among children increases in areas with a higher density of vines. Although medical advancements in disease survival are more common nowadays, childhood AL remains the secondary cause of child mortality following physical injury. Furthermore, childhood leukemia survivors can suffer from chronic or long-term health complications that may be life-threatening. The etiology or cause of childhood AL involves the interaction of multiple components, including lifestyle and genetics; emerging evidence indicates that environmental contaminants (e.g., pesticides, air pollution, solvents, diet, etc.) play a role in disease. Pesticide contamination is widespread in all ecosystems, and chemical compounds can accumulate in human tissues, resulting in chronic health effects. Children are particularly vulnerable to the impacts of pesticide exposure as their developing bodies cannot adequately combat exposure effects. Already, studies find low levels of pesticide exposure during pregnancy or childhood cause adverse health effects, from metabolic disorders to mental and physical disabilities. Moreover, […]

(Beyond Pesticides, October 31, 2023) With cooler weather setting in and people heading indoors and closing windows, the issue of COVID-19 transmission escalates, as do concerns about toxic chemicals filling the indoor ambient air. As a recent segment of 60 Minutes (October 29, 2023) stresses, COVID-19 spreads elevated public concern and understanding about the importance of ventilation, filtration, and air exchange to indoor air quality. Unfortunately, the concerns about indoor air are not limited to COVID-19 as volatile organic compounds (VOCs) invade most spaces where people live and work. These invisible toxic substances can be found in common household products, furniture, mattresses, and more, including pesticides in and around the house. Recognizing the risks associated with VOCs and the potentially hazardous off-gassing process is crucial for protecting public health.  VOCs are a group of chemicals that can easily vaporize into the air at room temperature. These compounds are found in many everyday items, including furniture, cleaning products, pesticides, cosmetics, and even air fresheners. Some household products, particularly pesticides, can introduce their own set of risks in addition to the risks they pose due to their VOC content. VOCs can range from harmless to harmful, and their presence can have a […]

(Beyond Pesticides, October 30, 2023) TAKE ACTION. It is said that the definition of insanity is doing the same thing over and over again and expecting a different result. And so it goes with the U.S. Environmental Protection Agency’s (EPA) proposal to register a new genetically engineered pesticide for the Colorado Potato Beetle (CPB); this time with a pesticide that has not been fully evaluated for its adverse effects to people and the environment. [Submit a public comment before comment period ends today, October 30, 2023.] Chemical-intensive agriculture has failed to control CPB since resistance to DDT was identified in 1952 and has continued with every family of pesticides since then. CPB has been dubbed the billion-dollar-bug because of the investment in failed attempts of chemical manufacturers to control the insect, the profits generated by chemical companies despite this failure, and the resulting losses for chemical-intensive farmers—not to mention government expenditures for the registration of chemicals that have short efficacy, pollution costs associated with chemical production and use, and lost ecosystem services. But, EPA is at it again, registering a new novel pesticide active ingredient, Ledprona, which raises the stakes on potential harm. The only winners in this ongoing failure […]

(Beyond Pesticides, October 27, 2023) In a typical move, EPA proposes to greenlight a type of genetic engineering to solve a problem created by the industrial paradigm for pest control, i.e. vast acreages of monoculture treated with millions of tons of toxic pesticides leading to rapid resistance among crop pests. In this case EPA wants to approve using a nucleic acid—double-stranded RNA (dsRNA)–called “interfering RNA,” or RNAi—to silence a gene crucial to the survival of the Colorado Potato Beetle (CPB), the scourge of potato farmers around the world. But EPA has skipped over important steps in its decision-making process and rushed to judgment. Like chemical pesticides, genetically-based pesticides are regulated under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). In 2020, Massachusetts-based GreenLight Biosciences applied for registration of its RNAi active ingredient, Ledprona, and its end-use product, Calantha. The company executive heading the effort is an alumnus of Monsanto and several other major chemical companies. Last May EPA granted GreenLight an Experimental Use Permit (EUP) authorizing field studies in states that produce tons of potatoes. A mere five months later, EPA announced its decision to approve the registration based almost entirely on incomplete EUP data and giving the public very […]

(Beyond Pesticides, October 26, 2023) The increasing prevalence of neurodevelopmental disorders (NDDs) in the United States has raised concerns about the impact of toxic exposures on child development. A comprehensive review by Devon Payne-Sturges, PhD, and colleagues in Environmental Health Perspectives analyzes the literature about disparities in NDDs in vulnerable and marginalized populations. The review investigates over 200 studies and reveals that fewer than half of these studies actually examine disparities, and most fail to provide a rationale for their assessments. The authors also offer practical suggestions for improving future research, including better methods for characterizing race and socioeconomic status and interpreting effect modification in environmental epidemiologic studies of health disparities. Associate Professor Devon Payne-Sturges, PhD, at the University of Maryland’s School of Public Health, one of the lead authors of the study and a former policy specialist at the U.S. Environmental Protection Agency (EPA) said, “FDA and EPA can act now—not later—to protect families from neurotoxic chemicals in consumer products and in the environment.” Tanya Khemet Taiwo, PhD, the other lead author and assistant professor at Bastyr University in Seattle said, “We need more stringent environmental standards to address pollution that is disproportionately impacting low-income communities and communities of […]

(Beyond Pesticides, October 25, 2023) A study published in Environmental Pollution finds farming and organophosphate (OP) pesticide exposure are risk factors for depression, with pesticide poisoning being a risk factor for suicidal behavior. Additionally, psychiatric disorder prognosis affects men more than women, with depression and suicidal outcomes more common among pesticide-exposed males. Age also affected depression and suicidal consequences, with elevated rates among older farmers. Research on pesticide-induced diseases commonly investigates pesticide exposure concerning the development of various physical illnesses. However, previous studies show that occupational (work-related) risks of developing depression are high in agriculture, where pesticide use is widespread. Acute exposure to chemicals, including organophosphate, organochlorine, triazine, and carbamate pesticides, tends to put farmers at elevated risk. More study is needed on pesticide exposure and similar psychological (psychiatric) effects in the general population. 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 many other psychiatric disorders—is often genetic, studies suggest that other etiological factors, like pesticide exposure, play a role in depression incidents. Poor mental health has a tangible influence on physical health (e.g., depression and cardiovascular disease); therefore, the combination of pesticide exposure […]

(Beyond Pesticides, October 24, 2023) Sub-Saharan Africa, often celebrated for its rich cultural diversity and stunning landscapes, is also home to a growing crisis beneath its surface – the depletion of its ancient soils. These soils–some of the oldest in the world–have undergone long periods of weathering and erosion, leading to severe nutrient deficiencies. Potassium, nitrogen, calcium, and phosphorus, vital for crop growth, are notably absent from these soils. Due to this and a dependency on synthetic fertilizers, along with an absence of soil and water conservation programs and other complex issues stemming from poor infrastructure, pervasive government instability, and colonialism, African soils have a markedly decreased ability to sustain high-yielding food crops. As a result, restoring soil health through the nurturing of microbial activity and the natural cycling of nutrients is identified as the number-one priority to improve agricultural productivity and ensure food sovereignty. While it might seem that African farmers could turn to organic or chemical fertilizers to address soil nutrient deficiencies, the reality is quite different. The high costs associated with these fertilizers make them largely inaccessible to most African farmers. Even though the average fertilizer application rate In Sub-Saharan Africa is 22 kilograms per hectare, significantly […]