Author Archive
23
Jul
(Beyond Pesticides, July 23, 2012) The U.S. Environmental Protection Agency’s (EPA) announcement last week of new agricultural risk mitigation measures for the neurotoxic insecticide chlorpyrifos continues to ignore farmworker health and that of their families, as well as the viability of organic farming systems in providing not only safer food, but safer working environments for farmworkers. The new measures, while a step in the right direction to protect vulnerable populations, do not go far enough to address the unreasonable risks associated with the chemical’s widespread continued use. The national pesticide law, the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), requires protection against “unreasonable adverse effects to man or the environment.” In its latest decision, EPA seeks to reduce exposure to “acceptable” risk levels. In this case, the agency is seeking to reduce exposure of bystanders to spray applications. The measures include reductions in aerial application rates of the insecticide and the establishment of mandatory buffers around sensitive sites where bystanders including children are known to suffer exposure. The new mitigation practices include reducing the maximum amount of chlorpyrifos that can be applied per acre using spray applications from 6 pounds/acre to 2 pounds/acre. The new measures also include no-spray buffer […]
Posted in Chlorpyrifos | No Comments »
20
Jul
(Beyond Pesticides, July 20, 2012) On Thursday, July 19, the U.S. Environmental Protection Agency (EPA) announced it had formally refused to recognize that honey bees face an “imminent hazard” and denied a request by beekeepers to immediately suspend the use of pesticides that pose harm to pollinators. The decision comes in response to a legal petition filed earlier this year by twenty-five beekeepers and environmental organizations, citing significant acute and chronic bee kills across the United States linked to neonicotinoid pesticides, particularly clothianidin. “We’re disappointed. EPA has signaled a willingness to favor pesticide corporations over bees and beekeepers,” said Steve Ellis, a petitioner and owner of Old Mill Honey Co, with operations in California and Minnesota. “This decision puts beekeepers, rural economies and our food system at risk. And the injury we are sustaining this year will be unnecessarily repeated.” This spring and summer, beekeepers from New York to Ohio and Minnesota, are reporting extraordinarily large bee die-offs, due, in part, to exposure to neonicotinoid pesticides. The die-offs are similar to what beekeepers have reported in the past few weeks in Canada (where EPA has admitted there are 120 bee kill reports, a huge number). On average, the U.S. Department […]
Posted in Announcements, Clothianidin, Pesticide Regulation, Pollinators | 3 Comments »
19
Jul
(Beyond Pesticides, July 19, 2012) The Alaska Department of Environmental Conservation (ADEC), along with Alaska Governor Sean Parnell, has proposed drastic changes to state pesticide regulations that will eliminate public participation for pesticide use, undermining the democratic process and affecting public and environmental health. Earlier this week, Representative Les Gara (D-Anchorage) expressed concern about the proposal. “If someone’s plans risk poisoning our drinking water or fishing streams, Alaskans should have a say,” said Rep. Gara. “Alaskans have a right to fish our streams, drink our water, and hunt without fear that our resources will be contaminated by toxic pesticides. If the Parnell administration blocks public comment, it would rob Alaskans of their fundamental right to speak on potential damage to fish and wildlife, and dangers to our children and drinking water.” In his official comments, Rep. Gara wrote, “I believe Alaskans should have a right to comment on important state issues. Elimination of a public commenting process by a state agency is always cause for concern, and when the public process pertains to human health and safety, the action is particularly disconcerting.” Not all of the proposed changes are bad. For instance, the proposed pesticide regulation changes will require the […]
Posted in Alaska, Pesticide Regulation, Take Action | 2 Comments »
18
Jul
(Beyond Pesticides, July 18, 2012) Just as the U.S. Environmental Protection Agency (EPA) opened the federal docket for the registration review of nanosilver, Rice University researchers settled a long-standing controversy over the mechanism by which silver nanoparticles, the most widely used nanomaterial in the world, kill bacteria. The researchers found that the silver ions, rather than the silver particles, have antimicrobial effects on bacteria. However, their work comes with a warning; low doses of nanosilver can make bacteria stronger and more resistant. Silver nanoparticles are used just about everywhere, including in cosmetics, socks, food containers, detergents, sprays and a wide range of other products to stop the spread of germs. Researchers have debated the mechanisms by which nanosilver particles exert toxicity to bacteria and other organisms. They have long known that silver ions, which flow from nanoparticles when oxidized, are deadly to bacteria. In the study, “Negligible Particle-Specific Antibacterial Activity of Silver Nanoparticles,” published in NanoLetters, the researchers explain that the nanoparticles are practically benign in the presence of microbes. But when in soluble ionic form, that is, when activated via oxidation, nanosilver becomes toxic to bacteria. The research team decided to test nanoparticle toxicity in an anaerobic environment —with […]
Posted in Antibacterial, Nanotechnology, Resistance, Take Action | 1 Comment »
17
Jul
(Beyond Pesticides, July 17th, 2012) On July 8, The New York Times ran an article indicting the organic food industry and the U.S. Department of Agriculgture (USDA) for their involvement in advancing a number of standards, practices, and decisions allowed under the organic label. The Times piece, “Has ”˜Organic’ Been Oversized?,” written by Stephanie Strom and featuring organic food industry critic and chief executive officer of Eden Foods, Michael Potter, concentrated on the outsized role large corporations have assumed economically through organic market share, and politically through the decisions of the National Organic Standards Board (NOSB). While the article reinforces organic advocates’ ongoing call for public vigilance, there is general agreement that organic offers consumers the safest place to spend their food dollars, the best protection for the environment and those who farm, and the highest degree of public input into the standard setting process. Beyond Pesticides’ Executive Director Jay Feldman, current NOSB member holding an environmentalist seat, wrote a response published in the Times article. Mr. Feldman said, “The article noted the involvement of big agriculture and food companies in establishing organic standards, as well as in several controversial decisions. But that discussion only diverts public attention from the […]
Posted in Agriculture, Alternatives/Organics, National Organic Standards Board/National Organic Program | No Comments »
16
Jul
(Beyond Pesticides, July 16, 2012) The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) has announced that it will soon create a docket to receive public comment on twelve petitions for new genetically engineered (GE) plants. Nine of the petitions, which include a soybean variety engineered to tolerate 2,4-D and two other pesticides and the first ever genetically engineered apple, are being processed under USDA’s streamlined review procedures. USDA’s review of the three other petitions, including a separate soybean variety tolerant to 2,4-D and glufosinate, began under the previous procedures and those crops, having reached a further clearance stage, are approaching commercial release. Information on each of the twelve genetically engineered crops is available on the APHIS website and the agency stated that the public comment dockets will be opened in the very near future. The introduction of crops tolerant of 2,4-D represents a dramatic escalation of the damage to human health and the environment caused by genetically engineered crops. 2,4-D is a highly toxic herbicide which has been linked to cancer, reproductive effects, endocrine disruption, and kidney and liver damage in humans. Scientific studies have confirmed significantly elevated rates of non-Hodgkin’s lymphoma for farmers who […]
Posted in 2,4-D, Chemicals, Genetic Engineering, glufosinate | 61 Comments »
13
Jul
(Beyond Pesticides, July 13, 2012) Seventy-five family farmers, seed businesses, and agricultural organizations representing over 300,000 individuals and 4,500 farms filed a brief on July 5, 2012 with the United States Court of Appeals for the Federal Circuit in Washington asking the appellate court to reverse a lower court’s decision from February dismissing their protective legal action against agricultural giant Monsanto’s patents on genetically engineered seed. The plaintiffs brought the preemptive case against Monsanto in March 2011 in the Southern District of New York and specifically seek to defend themselves from nearly two dozen of Monsanto’s most aggressively asserted patents on GMO seed. They were forced to act preemptively to protect themselves from Monsanto’s abusive lawsuits, fearing that if GMO seed contaminates their property despite their efforts to prevent such contamination, Monsanto will sue them for patent infringement. Beyond Pesticides signed on as a plaintiff in the suit in June 2011. “Monsanto is known for bullying farmers by making baseless accusations of patent infringement,” said attorney Dan Ravicher of the not-for-profit legal services organization Public Patent Foundation (PUBPAT), which represents the plaintiffs in the suit against Monsanto known as Organic Seed Growers and Trade Association et al. v Monsanto. “They’ve […]
Posted in Genetic Engineering, Litigation, Monsanto | 1 Comment »
12
Jul
(Beyond Pesticides, July 12, 2012) The Council of the District of Columbia passed a pesticide reform act Tuesday strengthening pesticide restrictions in our nation’s capital. To ensure the rules are enacted, Beyond Pesticides is calling on supporters to take action and urge D.C. Mayor Vincent C. Gray to sign the legislation into law. The Pesticide Education and Amendment Control Act of 2012, introduced by Chairwoman Mary Cheh of the Environment, Transportation and Public Works Committee, is a step forward in the fight to keep schools and other public spaces free from unnecessary chemical applications. The bill protects children and their parents by restricting the application of pesticides at schools and day care centers, on public property, and near waterways. It also establishes publicly available courses on pesticides at the University of the District of Columbia. The passage of this Act adds to the growing movement across the country calling for increased restrictions on the use of dangerous chemicals in the public sphere. Beyond Pesticides has worked with localities throughout the U.S. in an effort to promote organic land care systems and restrict the hazardous use of chemicals. Recently, Ohio’s Cuyoga County successfully banned a majority of toxic pesticide uses on […]
Posted in Alternatives/Organics, Lawns/Landscapes, Pesticide Regulation, Take Action, Washington D.C. | 8 Comments »
11
Jul
(Beyond Pesticides, July 11, 2012) Hundreds of dead fish have been found in Prince Edward Island, Canada, the second in two years, prompting concerns about the use of pesticides in the province’s agriculture industry, and the effectiveness of mitigation measures to reduce pesticide runoff. It is believed that pesticide runoff from nearby agricultural fields after heavy rains are to blame for the massive fish kill. More than 2,000 fish have been scooped from the near two-mile stretch of Barclay Brook in Coleman since last Thursday following heavy rainfall, more than triple the amount of fish that washed up on the same shores of the brook last year, although the current discovery is concentrated in a smaller area. It is believed the actual number of dead fish is much higher, as predators and river currents would have quickly taken away the remains of other fish. Barclay Brook is part of the Trout River watershed, the scene of a devastating fish kill last July that mainly wiped out large fish. An investigation is underway to determine the exact cause of the fish kill, given that water temperature and oxygen levels were within acceptable ranges and the fish looked healthy and well-fed. As […]
Posted in International, Water, Wildlife/Endangered Sp. | No Comments »
10
Jul
(Beyond Pesticides, July 10, 2012) In a victory for human health and organic farmers, the District Court in Delta, Colorado granted a permanent injunction last week to prohibit a farmer from fogging for moquitoes within 150 feet of his neighbor’s property or allowing the pesticides to drift, considering this to be a form of trespass. The victory is important for organic growers and others who are frequently under threat of pesticide drift from neighboring properties. Judge Charles Greenacre determined that an application of the insecticide, Fyfanon, a form of malathion, had drifted, and thus trespassed, onto the neighboring organic farm of Rosemary Bilchak and her husband, Gordon MacAlpine. In granting the permanent injunction, Judge Greenacre decided that: “Plaintiffs have an interest, shared by the public in general, in not having their property invaded by third persons or things. Plaintiffs also have a specific interest in not having pesticides invade their property because such invasions will delay or negate their efforts to have their property certified for the production of organic crops.” Last year, the Minnesota Court of Appeals ruled that pesticides drifting from one farm to another may constitute trespass, and courts in other states have ruled in favor of […]
Posted in Colorado, Litigation, Malathion, Pesticide Drift | No Comments »
09
Jul
(Beyond Pesticides, July 9, 2012) Health officials in Connecticut are telling residents who drink from private wells to test their water for the banned pesticides chlordane and dieldrin, after a study from the town of Stamford, CT found at least one of the toxic chemicals in 195 out of 628 wells tested. Over half of the wells that tested positive for one of the pesticides were found to contain concentrations at levels above what the U.S Environmental Protection Agency (EPA) considers acceptable. Both of these chemicals, discussed at length in Rachael Carson’s seminal book Silent Spring, were widely used throughout the country before their ban in the late 1980s. Since then, these chemicals have revealed themselves to be pervasive in our environment. In 2007, Beyond Pesticides wrote on the discovery of chlordane on the grounds of a New Jersey middle school at levels above EPA limits. In 2009, the U.S Housing and Urban Development (HUD) and EPA conducted a survey that found chlordane in 64% of U.S households sampled. In 2010, we reported on the occurrence of these two historic-use chemicals in what are considered “pristine” National Parks. Unfortunately, if the water contamination residents are finding turns out to be […]
Posted in Chlordane, Connecticut, Dieldrin, Water | No Comments »
06
Jul
(Beyond Pesticides, July 6, 2012) The agribusiness conglomerate DuPont has received more than 30,000 damage claims arising from its sale of a pesticide that resulted in death and injury to hundreds of thousands of evergreen trees, particularly Norway spruce and white pine. DuPont marketed the pesticide, sold under the trade name Imprelis, based on a conditional registration that the U.S. Environmental Protection Agency (EPA) granted in 2010. Soon after Imprelis became commercially available the next spring, EPA began receiving widespread reports of tree death and injury from landscapers and residential users who had applied the pesticide according to its label conditions. EPA issued an immediate stop sale order for Imprelis on August 11, 2011 after DuPont submitted reports of more than 7,000 reports of tree damage. The New York Times reports that DuPont has set aside $225 million for claims that have already been submitted, and that the payout could ultimately reach $575 million. These figures do not include costs related to a class-action lawsuit filed by thousands of homeowners, landscapers and others, consolidated in federal court in Philadelphia. Some claimants are frustrated by the pace of the claims process and communications from the company. “We’re hearing nothing,” said Janet […]
Posted in Aminocyclopyrachlor, clopyralid, DuPont | No Comments »
05
Jul
(Beyond Pesticides, July 5, 2012) After a 2006 cancellation of uses due to unreasonable risks to farmworker health and the environment, and a 6-year phase out scheduled to conclude this September, the U.S. Environmental Protection Agency (EPA) is conducting a risk-benefit analysis to make a determination whether to keep in place or amend the cancellation order for the organophosphate azinphos-methyl (AZM), citing new information on the economic costs of using alternatives. In 2001, EPA found that insecticides azinphos-methyl (AZM) posed unacceptable risks to farmworkers and announced that 28 crop uses were being canceled, seven crop uses were to be phased-out over four years, and eight crop uses were to be allowed to continue under a “time-limited” registration for another four years. Farmworker advocates challenged that decision in federal court citing that EPA failed to take into account the costs of poisoning workers, exposing children, and polluting rivers and streams. A settlement agreement effectively stayed the legal challenge pending EPA’s reconsideration of the “time limited” uses of AZM. In November 2006, EPA decided that AZM poses unreasonable adverse effects and issued a final decision to cancel AZM, but allowed continued use on some fruit crops (apples, cherries, pears) for six more […]
Posted in Alternatives/Organics, Autism, Azinphos-methyl, Biofuels, California, Disease/Health Effects, Farmworkers, International, Pesticide Regulation, Take Action | 3 Comments »
03
Jul
(Beyond Pesticides, July 3, 2012) Several organizations, including Occupy Wall Street Maui and GMO-Free Maui, as well as over 100 concerned citizens, held a protest on Thursday, June 28 in front of the Monsanto Corporation headquarters in Kunia on the Island of Oahu, Hawaii. According to the organizers, the protesters met in Kunia and marched over a half mile to the Monsanto, compound for two hours of roadside sign-waving and chanting, demanding that Monsanto leave Hawaii and saying they need real food not exported GMO seeds and chemical contamination. The group also demands that genetically engineered (GE) food be labeled. The protesters wore masks to protect themselves from pesticide drift and GE spores, and received lots of support from many in passing cars that honked their horns and waved in support. According to organizers, a nearby resident even came to find out what was going on and soon donned a mask himself as he was unaware of the dangers so close to his house. The resident expressed concern about the large trucks and equipment operating at night at Monsanto’s fields. Monsanto operates about 8,000 acres in Hawaii for GE seed production. According to organizers, these operations use the most valuable […]
Posted in Genetic Engineering, Hawaii, Monsanto | 2 Comments »
02
Jul
(Beyond Pesticides, July 2, 2012) The French Ministry of Agriculture has issued a ban on the neonicotinoid pesticide thiamethoxam due to concerns over the chemical’s impacts on pollinators, especially honey bees. The pesticide product containing thiamethoxam, Cruiser OSR, is manufactured by Swiss chemical giant Syngenta and has been used as a seed treatment on canola seed. The French Agriculture Minister, Stephane Le Foll, had announced in June that his agency was considering a ban on the pesticide and asked Syngenta to submit any new data the company had on the chemical. Apparently finding this data insufficient evidence that thiamethoxam was safe for pollinators, the agency withdrew the permit for Cruiser OSR last Friday. The ban is expected to take effect at the start of the next canola planting season in late summer. Thiamethoxam is a neonicotinoid insecticide used to coat seeds prior to planting. When the seed germinates, the plant that grows from it takes the chemical up through its vascular system and expresses it through pollen, nectar, and guttation droplets from which bees forage and drink. Thiamethoxam is very closely related to another neonicotinoid insecticide, clothianidin. When insects ingest thiamethoxam, their digestive system metabolizes it to clothianidin, killing the […]
Posted in Agriculture, International, Pollinators, Syngenta, Thiamethoxam | 3 Comments »
29
Jun
(Beyond Pesticides, June 29, 2012) New research from the McGill University Health Centre (MUHC) in Montreal suggests that pesticide exposure, as well as smoking, head injury, farming, and less education, may be a risk factor for a rare sleep disorder that causes people to kick or punch during sleep, according to a study entitled “Environmental risk factors for REM sleep behavior disorder: A multicenter case-control study” published in the June 27, 2012, online issue of Neurology, the medical journal of the American Academy of Neurology. People with the disorder, called REM sleep behavior disorder, do not have the normal lack of muscle tone that occurs during rapid eye movement (REM) sleep, causing them to act out their dreams. The movements can sometimes be violent, causing injury to the person or their bed partner. The disorder is estimated to occur in 0.5 percent of adults. “Until now, we didn’t know much about the risk factors for this disorder, except that it was more common in men and in older people,” said study author Ronald B. Postuma, MD, MSc, with the Research Institute at MUHC and a member of the American Academy of Neurology. “Because it is a rare disorder, it was […]
Posted in Disease/Health Effects, Farmworkers, Parkinson's | No Comments »
28
Jun
(Beyond Pesticides, June 28th 2012) The Canadian province of Manitoba is asking for public feedback on whether to ban the sale and/or use of cosmetic pesticides for lawn care. This request comes on the heels of a May 17 recommendation by a special committee in the Canadian provincial government of British Columbia (BC) not to enact an all-out ban on cosmetic pesticides. Currently, seven Canadian provinces have enacted pesticide regulation, each with varying degrees of restrictions. The public has until October 1 to submit their comments on the ban to the Manitoba government. The province is providing guidance to the public through a paper titled Play it Safe, which outlines the background on the proposed ban, explores restriction options, and raises awareness about pesticide use on lawns. The paper makes note of the importance of using a precautionary approach to the sale and use of lawn care pesticides, acknowledging the potential harm these chemicals can cause to the environment and human health, especially those at increased risk, such as pregnant women and children. Environmental groups and public health organizations, including the Canadian Cancer Society, the Canadian Association of Physicians for the Environment (CAPE), and The David Suzuki Foundation are all […]
Posted in International, Lawns/Landscapes, Take Action | No Comments »
27
Jun
(Beyond Pesticides, June 27, 2012) One county in New Jersey is getting serious about combating mosquitoes this season. Instead of relying on pesticide spraying, which has been shown to not be effective, the Cape May County Department of Mosquito Control is employing 10,000 tiny shrimp-like crustaceans that will eat their way through mosquito larvae in the county’s swamps, roadside ditches and small pools. The latest weapon in the battle against mosquitoes is barely visible. The crustaceans, known as copepods, are cousins to crayfish and water fleas, and do not get much bigger than two millimeters. They are voracious predators of mosquito larvae. New Jersey recently delivered 10,000 of the tiny shrimp-like crustaceans to Cape May County. They are already being used to fight mosquitoes in Bergen, Passaic, and Morris counties. Ocean County is next on the delivery list and six other counties will follow. “The days of driving a truck down the street and spraying pesticides are long gone. These copepods can pick up where fish leave off,” according to Administrator Robert Kent, of the state Office of Mosquito Control. Natural Predators as a Solution for Mosquito Control New Jersey has used mosquitofish, fathead minnows, killifish, bluegill and other fish […]
Posted in Alternatives/Organics, Mosquitoes, New Jersey | No Comments »
26
Jun
(Beyond Pesticides, June 26, 2012) A new analysis of the current state of nano pesticide-based technologies shows that human and environmental risks are not fully understood and calls on the use of precautionary principal, which suggests minimizing environmental release of nano-particles until their fate and toxicity is better understood. The study, Nano-pesticides: State of knowledge, environmental fate and exposure modeling was was published in the June 6th issue of Critical Reviews in Environmental Science and Technology. “A good understanding of nano-materials is essential to evaluate whether the benefits overcome potential new risks,” explains co-author Thilo Hofmann, Ph.D., of the University of Vienna study. According to the researchers, the current level of knowledge does not allow a fair assessment of the advantages and disadvantages that will result from the use of nano-pesticides. As a prerequisite for such assessment, a better understanding of the fate and effect of nano-pesticides after their application is required. The suitability of current regulations should also be analyzed so that refinements can be implemented if needed. Research on nano-pesticides is therefore a priority for preserving the safety of both the food chain and the environment. The study echoes similar findings of a U.S. Government Accountability Office report, […]
Posted in Nanotechnology | No Comments »
25
Jun
(Beyond Pesticides, June 25, 2012) The Canadian governmental authority responsible for pesticide registration has expanded its re-evaluation of neonicotinoid pesticides to include two additional compounds linked to honey bee deaths and Colony Collapse Disorder (CCD). Health Canada’s Pest Management Regulatory Agency (PMRA) announced on June 12 that it has added clothianidin and thiamethoxam and their associated products to its ongoing re-evaluation of imidacloprid. The re-evaluation of these pesticides will focus on resolving issues related to environmental risk and specifically the potential effects of neonicotinoids on pollinators. The re-evaluation will consider all agricultural uses of neonicotinoid insecticides, including soil applications, seed treatment, as well as foliar and greenhouse uses. The Canadian announcement follows France’s decision earlier this month to initiate its own review for thiamethoxam that could result in the cancelation of allowances for using the pesticide. Neonicitinoids are highly toxic to a range of insects, including honey bees and other pollinators. They are taken up by a plant’s vascular system and expressed through pollen, nectar, and gutation droplets from which bees forage and drink. Neonicotinoids are particularly dangerous because, in addition to being acutely toxic in high doses, they also result in serious sublethal effects when insects are exposed to […]
Posted in Clothianidin, Imidacloprid, International, Pesticide Regulation, Pollinators, Thiamethoxam | 1 Comment »
22
Jun
(Beyond Pesticides, June 22, 2012) In May, the U.S. Department of Agriculture’s National Organic Standards Board (NOSB) met to decide on a range of issues concerning allowable materials and practices in certified organic farming. The recommendations adopted by the board have been sent on to USDA’s National Organic Program (NOP) for incorporation into federal regulations. A webcast of the entire four day meeting can be viewed here. Additionally, NOP has provided a short summary of the meeting in their quarterly newsletter. On our Keeping Organic Strong action page, you will find summaries of the significant actions taken by the board at the meeting along with supporting documentation. Each issue is discussed separately, incorporating Beyond Pesticides’ positions on what the outcomes signify for the future of the organic movement. This was the first meeting to be chaired by the newly-elected NOSB chairman Barry Flamm, who holds an Environmentalist position on the Board. This was also the first meeting for the five newest NOSB members, who were appointed at the Fall 2011 meeting: Harold V. Austin, IV, Director of Orchard Administration for Zirkle Fruit Company (Handler position); Carmela Beck, National Organic Program Supervisor and Organic Certification Grower Liaison for Driscoll’s, an organic […]
Posted in Agriculture, Alternatives/Organics, National Organic Standards Board/National Organic Program | No Comments »
21
Jun
(Beyond Pesticides, June 21st, 2012) A new study details the toxic effects of long-term exposure to commonly used agricultural pesticides. Results indicate an increased likelihood of moderate to severe blood toxicity and a reduced total number of bone marrow cells, which can lead to degenerative diseases like aplastic anemia. The study, entitled “Pesticide Induced Alterations in Marrow Physiology and Depletion of Stem and Stromal Progenitor Population: An Experimental Model to Study the Toxic Effects of Pesticide” is published in the online version of the Journal of Environmental Toxicology . The experiment, led by researchers at the Calcutta School of Tropical Medicine’s Department of Biochemistry and Medical Biotechnology, exposed a group of mice to a mixture of organochlorine, organophosphate and pyrethriod pesticides, including a preponderance of the chemicals cypermethrin, and chloropyrofos. The exposed mice showed an overall reduction in the ability of their bodies to produce bone marrow cells. Bone marrow, the soft flexible tissue found in the interior of bones, is a storehouse for stem cells. While the exact mechanism is unknown to researchers, the study reveals that the microenvironment in which stem cells develop is somehow deranged by pesticides. This derangement prevents the maturation of stem cells into every […]
Posted in Chlorpyrifos, cypermethrin, Disease/Health Effects | 1 Comment »
20
Jun
(Beyond Pesticides, June 20, 2012) To control a growing insect resistance problem to the widely used biological pesticide Bacillus thuringiensis (Bt) toxin, now genetically engineered into corn, two experts have concluded that the U.S. Environmental Protection Agency (EPA) should double the so-called “refuges” of acreage planted with non-genetically engineered (GE) corn. If the resistance problem continues -exacerbated by these GE pesticide incorporated plants (PIPs), it will eliminate a bio-rational tool often used by organic farmers. The article, “Delaying Corn Rootworm Resistance to Bt Corn,” was published in the June 2012 issue of Journal of Economic Entomology. Currently, EPA requires 20 percent of the total acreage to be set aside for refuges for corn producing one Bt protein (CryBb1), and a 5 percent refuge portion for corn that produces two different Bt proteins at the same time. However, earlier this year, inspections found that more than 40% of American farmers who planted certain varieties of the GE corn in 2011 failed inspections to verify compliance with these management practices to prevent insect resistance. “Most of the corn seed currently produced in the U.S. is transgenic and includes genes for insect control,” said co-author Fred Gould, PhD. “Enlarging refuges will require more […]
Posted in Bt, Genetic Engineering | No Comments »