(Beyond Pesticides, April 25, 2012) Researchers at Portland State University have found that the cultivation of corn genetically engineered (GE) to express the insecticidal soil bacterium Bacillus thuringiensis (Bt) has negative impacts on beneficial soil life. The research team, led by PhD student Tanya Cheeke, was interested in determining whether the cultivation of Bt corn has a negative effect on arbuscular mycorrhizal fungal colonization of Bt corn or of crops subsequently planted in the same soil. Their findings, published in the April 2012 issue of the American Journal of Botany, show a decreased presence of the beneficial fungi in the roots of Bt corn when compared to non-Bt corn. Bt corn is genetically engineered to express insecticidal toxins derived from Bt in an effort to protect it against common agricultural pests such as the corn root worm and European corn borer. Recent findings have shown, however, that insects are growing increasingly resistant to the toxin, due in part to a breakdown in resistance management implementation. Additionally, researchers in Europe recently found evidence that Bt is toxic to human cells in large doses. Arbuscular mycorrhizal fungi (AMF) are ubiquitous microscopic soil fungi that form symbiotic relationships with the roots of most […]

(Beyond Pesticides, April 24, 2012) Dow Chemical has asked USDA for approval of genetically engineered (GE) corn, modified to be tolerant to the highly toxic 2,4-D herbicide, which is contaminated with dioxin and linked to cancer, birth defects and more. We know from experience that herbicide-tolerant crops are a bad idea. They increase toxic pesticide use, contaminate organic and non-GE farms, and contribute to herbicide-resistance. In fact, Dow introduced a new GE corn variety because weeds are becoming resistant to Roundup, the previous chemical of choice for herbicide-tolerant plants. However, solving herbicide resistance with a new, more toxic chemical is like using gasoline to put out a fire. It will cause even more damage to health and the environment, and in a few years, the pesticide industry will be marketing their next “solution” to the growing resistance problem. Read Beyond Pesticides full comments to USDA for Dow’s petition to approve 2-4,D-resistant GE corn. Tell USDA to stop this toxic experiment and deny Dow’s petition for 2,4-D tolerant corn. Sign your organization or business onto Beyond Pesticides’ comments or submit comments directly to the USDA docket. The deadline to sign on is Friday, April 27 at noon. Background: In a radio […]

(Beyond Pesticides, April 23, 2012) A diverse coalition of farm groups has petitioned the U.S. Department of Agriculture (USDA) to conduct a comprehensive environmental impact statement on the cumulative effects of a new generation of genetically engineered (GE) crops modified to tolerate the herbicides 2,4-D and dicamba. The Save Our Crops Coalition filed the petition in advance of an anticipated spike in applications of the two herbicides in 2013 with the commercial release of a new generation of “stacked” corn and soybean varieties, which will also be resistant to the herbicide glyphosate. In the petition, the coalition stated that 2,4-D and dicamba have been proven to be especially prone to volatilization and drift and that even extremely low residue levels can cause catastrophic damage to non-target crops as far as ten miles from the point of application. The petition raises specific concerns about the increased 2, 4-D and dicamba usage due to the timing of the herbicide applications. The new blended 2,4-D or dicamba and glyphosate herbicides will be sprayed repeatedly during the growing season after weeds emerge and begin to compete with crops. Spraying herbicides, which are known to volatilize and drift during periods when specialty crops are at […]

(Beyond Pesticides, April 19, 2012) The University of Texas (UT) Student Government body unanimously passed a resolution last month to ban soap containing the toxic antibacterial chemical triclosan throughout campus. If the ban is accepted by the University administration, UT would be the first university in the country to take an official stance against one of the most prevalent and dangerous antibacterial products available. Triclosan, which can be found in many personal care products, has been linked to numerous human and environmental health effects. Recently the Canadian government declared triclosan as an environmental toxin, proposing regulations to restrict its use. Student Government (SG) representative and public affairs graduate student Robert Love, who initiated the ban, says that officials in several different campus purchasing departments are open to phasing out antibacterial soap. For financial and environmental reasons, the University phased out the use of the triclosan-containing soap in restrooms across campus in 2008; however, it is still being used in other places on campus. According to a university spokeswoman, a campus-wide phase out would require an official decision. “What we’re saying is we need an outright ban on campus, and we need to kind of make a bold statement,” said urban […]

(Beyond Pesticides, April 16, 2012) The U.S. National Marine Fisheries Service (NMFS) has released a draft Biological Opinion finding that three commonly used herbicides are increasing the chance of extinction for threatened and endangered Pacific salmon and steelhead runs. The NMFS assessment reverses earlier assurances from the U.S. Environmental Protection Agency (EPA) that the pesticides are “not likely to adversely affect” the dwindling salmon populations. The draft Opinion also contains restrictions on applying the three pesticides near waterways in California, Washington, Oregon and Idaho that provide habitat for the threatened and endangered runs. Public comment on the draft is being accepted through April 30 and the restrictions on applying the pesticides will take effect no later than one year after the final assessment is released. NMFS prepared the draft Opinion in response to EPA’s initial assessment of the risk that current uses of the herbicides oryzalin, pendimethalin and trifluralin pose for the threatened and endangered salmon and steelhead species. NMFS’ findings contradict significant conclusions from EPA’s work and highlight weaknesses in the agency’s current ecological risk assessment process that underestimate risk and fail to meet modern standards of analysis. For example, NMFS cites EPA’s failure to provide any analysis of […]

(Beyond Pesticides, April 13, 2012) A study has found that the children of flower plantation workers in Ecuador are neurologically affected by the pesticide residues that their parents unwittingly carry home on their clothes, tools, and skin. The study documents significantly reduced activity for the essential enzyme acetycholinesterase (AChE) in children whose parents work on flower plantations compared to others whose parents do not. The two main classes of pesticides that the researchers identify as used in the region’s flower production, organophosphates and carbamates, are known to suppress the enzyme’s activity. AChE activity is crucial to healthy neurological functioning in humans and its suppression during childhood can hinder nervous system and cognitive development causing immediate and long-term impairment. In the study, Lower acetylcholinesterase activity among children living with flower plantation workers (Environ Res. 2012 Apr;114:53-9. Epub 2012 Mar 10), children whose parents work on a flower plantation are more than three times more likely to be in the group of lowest AChE activity. Additionally, the children who live the longest with a flower plantation worker are four times more likely to have lower enzyme activity than children who never live with a plantation worker. The researchers obtained their results by […]

(Beyond Pesticides, April 12, 2012) The U.S. Environmental Protection Agency (EPA) announced Monday that it has rejected a petition to ban the widely used herbicide 2,4-D, dismissing epidemiologic studies that link the pesticide to cancer, endocrine disruption, and other human health effects. In its announcement, EPA also responded to comments that Beyond Pesticides submitted in 2009, dismissing two studies that evaluate the relationship between the use of the chemical on lawns and the incidence of malignant lymphoma in pets. The petition was initially filed in 2008 by the Natural Resources Defense Council (NRDC). 2,4-D has been used in the U.S. since the 1940s, and as such is one of the oldest registered herbicides in the country. It made up roughly half of the herbicide known as Agent Orange, which was used to defoliate forests and croplands in the Vietnam War. According to EPA, 2,4-D is currently found in approximately 600 products registered for agricultural, residential, industrial, and aquatic uses. The use of 2,4-D is expected to increase significantly in the next few years with the recent announcement that Dow AgroSciences, the main manufacturer of the chemical, is seeking federal approval to sell corn seeds that have been genetically engineered to […]

(Beyond Pesticides, April 11, 2012) U.S. Representative Keith Ellison (D-Minn.) reintroduced legislation (H.R.4318), “To prohibit the use, production, sale, importation, or exportation of any pesticide containing atrazine,” on March 29. Atrazine is used nationwide to kill broadleaf and grassy weeds, primarily in chemical-intensive corn production. Upon introduction Rep. Ellison pointed out that a U.S. Geological Survey finds atrazine in approximately 75 percent of stream water and 40 percent of groundwater sampled near agricultural areas. The bill complements calls by Beyond Pesticides and other advocacy groups to ban this dangerous chemical. Previously, a similar bill was introduced in 2010 (H.R. 5124), which remained in committee. H.R. 4318 states, “The toxicity of atrazine is well documented and has shown to have adverse endocrine effects in amphibians, mammals, and humans. There is evidence that atrazine exposure is associated with low sperm counts and poor motility in exposed adult men, and that prebirth atrazine exposure is associated with small birth weight and abnormal development of the gut wall in infants. In laboratory mammals, exposure is associated with abnormal reproductive system development, impaired prostate gland formation, and abnormal breast tissue development. In aquatic wildlife, exposure is associated with abnormal reproductive system development, impaired reproduction, and […]

(Beyond Pesticides, April 9, 2012) A new study finds that exposure of pregnant women to organophosphate (OP) pesticides —a widely used class of pesticides in North American agriculture— may affect both length of pregnancy and birth weight. Environmental Health Perspectives published the paper, “Associations of Prenatal Exposure to Organophosphate Pesticide Metabolites,” last Thursday, April 5, 2012. The study, by a Simon Fraser University researcher, finds that the population of 306 women in Cincinnati, Ohio, is representative of the type of exposures most North American women and their children experience. Although the use of OPs in Canada and the U.S. has declined in recent years, exposures remain widespread, and these findings add to growing evidence about the harmful effects of low-level exposures to environmental toxicants. The researchers collected urine from each of the women in Cincinnati twice during their pregnancies for organophosphate metabolites as well as other factors that could influence the fetus’ health, including exposure to second hand smoke, race, and poverty. Women with higher levels of organophosphates were found to have pregnancies that were three to four days shorter and babies that were about â…“ pound lighter on average than women with lower levels of pesticides. “For an individual […]

(Beyond Pesticides, April 5, 2012) Newly published research has documented that widely used herbicides can adversely impact non-target invertebrate organisms and that endangered species face acute risk from such impacts. Researchers found that adult numbers of the Behr’s metalmark butterfly dropped by one-fourth to more than one-third when its larvae were exposed to herbicides applied in the vicinity of the butterfly’s preferred food source, the naked stem buckwheat plant. The results are especially disturbing because the Behr’s metalmark was being studied as a surrogate for the Lange’s metalmark butterfly, which shares the same habitat and feeding preference and whose population has shrunk from 2,300 in 1999 to less than 100 today. As a federally protected endangered species, the Lange’s metalmark could not be included in the experiment. Researchers concluded that inert ingredients in the herbicide formulations or indirect effects on food plant quality may be causing the increased butterfly mortality. The research was conducted at the 55 acre Antioch Dunes National Wildlife Refuge in Contra Costa County, CA, which is the only known habitat for the Lange’s metalmark. Refuge managers noticed that the naked stem buckwheat, which is native to the refuge and supports both species of butterflies, was being […]

(Beyond Pesticides, April 4, 2012) The world’s most popular weed killer can induce morphological changes in vertebrate animals, U.S. biologists studying its effect on amphibians say. University of Pittsburgh researchers have found that the weed killer Roundup, in sub-lethal and environmentally relevant concentrations, causes two species of amphibians to change their shape by interfering with the hormones of tadpoles and potentially many other animals. The study, “New effects of Roundup on amphibians: Predators reduce herbicide mortality; herbicides induce antipredator morphology” is the first to show that a pesticide can induce morphological changes in a vertebrate animal, biological sciences Professor Rick Relyea, PhD, said in a university release. The study was undertaken using simple created wetlands and introducing tadpoles from three species of amphibians —the leopard frog, American toad, and wood frogs. After three weeks, the tadpoles were examined. The impact of Roundup on the shape of tadpole tails was most noticeable in both the wood frog and leopard frog tadpoles. According to the study, “In wood frog and leopard frog tadpoles, Roundup induced relatively deeper tails in the same direction and of the same magnitude as the adaptive changes induced by dragonfly cues… [T]his is the first study to show […]

(Beyond Pesticides, April 3, 2012) Last week, the journal Science published two new studies linking neonicotinoid pesticide exposure to bee health. These two studies, one French, one British, add to a growing body of scientific literature and strengthen the case for removing pesticides toxic to bees from the market. The French study shows that pesticides interfere with honey bee brains, affecting their ability to navigate. The British research finds that pesticides prevent bumble bees from collecting enough food to produce new queens. These studies were released on the heels of an emergency legal petition by beekeepers and environmental groups, including Beyond Pesticides, that calls for the ban of the bee-killing pesticide clothianidin. 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. They 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 chronic low doses, as they are through pollen and water droplets laced with the chemical as well as dust that is released into the […]

(Beyond Pesticides, March 28, 2012) The Canadian government is set to declare the bacteria killer found in many toothpastes, mouthwashes and anti-bacterial soaps as toxic to the environment, a move which could see the use of the chemical curtailed sharply in Canada. Triclosan, the chemical in question, has been linked to numerous human and environmental health effects and has been the subject of petitions calling for its ban from consumer products. Health Canada has been probing the effects of triclosan on the body’s endocrine system and whether the antibacterial agent contributes to the development of antibiotic resistance along with the effect of widespread use on the environment. The draft risk assessment finds triclosan to be toxic to the environment but but does not find enough evidence to say it is hazardous to human health. The formal proposal to list the chemical as toxic to the environment will be published Friday. Triclosan exploded on to the marketplace in hundreds of consumer products ranging from antibacterial soaps, deodorants, toothpastes, cosmetics, fabrics, toys, and other household and personal care products. While antibacterial products are marketed as agents that protect and safeguard against potential harmful bacteria, studies conclude that antibacterial soaps show no health […]

(Beyond Pesticides, March 27, 2012) On March 21, Beyond Pesticides joined beekeepers and environmental groups, Center for Food Safety and Pesticide Action Network North America in filing an emergency legal petition that calls on the Environmental Protection Agency (EPA) to suspend registration of Bayer’s controversial bee-killing pesticide, clothianidin. Because Congress has the authority to exercise oversight over federal agencies like EPA, the organizations are now calling on the public to ask Congress to protect honey bees and wild pollinators from clothianidin and other pesticides known to be toxic to bees. Bees and other pollinators are still dying off at catastrophic rates —commercial beekeepers lost an average of 36% of their hives last year, according to USDA. Honey bees pollinate one in every three bites of our food and, as indicator species, they serve as sentinels whom we ignore at our peril. As the public debate over causes of Colony Collapse Disorder (CCD) —a syndrome in which bees seemingly abandon their hives— carries on in the media, more and more new science has shown that neonicotinoid pesticides are indeed a critical piece of the puzzle. Neonicotinoids like clothianidin may not be the sole cause of CCD, but they are making our […]

(Beyond Pesticides, March 23, 2012) In a victory for environmentalists and farmworkers, manufacturers of the controversial and highly toxic fumigant methyl iodide announced it will cease selling its products containing the chemical in the U.S. market earlier this week. Representatives from the Tokyo-based company, Arysta LifeScience say that the decision was made as a part of an internal review and based on its economic viability in the U.S.; however, the company will still continue to sell methyl iodide products in other countries. “Today I’m really happy. It feels like someone finally listened to us about something really important.” Gabriela Rincon, told the Los Angeles Times. Ms. Rincon is the daughter of farmworkers who pick strawberries in the Salinas area in California. Methyl iodide causes late term miscarriages, contaminates groundwater and is so reliably carcinogenic that it’s used to create cancer cells in laboratories. It is on California’s official list of known carcinogenic chemicals and has been linked to serious risks in reproductive and neurological health. The pesticide poses the most direct risks to farmworkers and those in the surrounding communities because of the volume that would need to be applied to fields and its tendency to drift off site through […]

(Beyond Pesticides, March 22, 2012) Yesterday, commercial beekeepers and environmental organizations filed an emergency legal petition with the U.S. Environmental Protection Agency (EPA) to suspend use of a pesticide that is linked to honey bee deaths, urging the agency to adopt safeguards. The legal petition, which specifies the pesticide clothianidin, is supported by over one million citizen petition signatures, targets the pesticide for its harmful impacts on honey bees. “EPA has an obligation to protect pollinators from the threat of pesticides,” said Jeff Anderson of California Minnesota Honey Farms, a co-petitioner. “The Agency has failed to adequately regulate pesticides harmful to pollinators despite scientific and on-the-ground evidence presented by academics and beekeepers.” Over two dozen beekeepers and beekeeper organizations from across the country, from California and Minnesota to Kansas and New York, filed the legal petition with the EPA today. Many of these family-owned beekeeping operations are migratory, with beekeepers traveling the country from state-to-state, during different months of the year to providing pollination services and harvesting honey and wax. And they are concerned about the continued impacts on bees and their beekeeping operations, which are already in jeopardy. “The future of beekeeping faces numerous threats, including from clothianidin, and […]

(Beyond Pesticides, March 21, 2012) A half-century after California officials discovered that large amounts of the pesticide DDT had been discharged into a San Francisco Bay canal, the chemical is still poisoning fish and posing a threat to human health despite numerous cleanup attempts. After years of limited success with clean-up, the U.S. Environmental Protection Agency (EPA) has launched a three-year plan to pinpoint the cause of continuously high DDT levels and engage the surrounding community in cleanup and education efforts. The former plant and the adjacent canal, called the Lauritzen Channel, an inlet of the greater San Francisco bay, is one of the most polluted places in the nation. DDT levels have not decreased in the channel even after numerous dredging and other mitigation measures. In fact concentrations have increased. By 2011, DDT concentrations exceeded 1994 levels and some fish have DDT levels in their tissues hundreds of times higher than their counterparts in the rest of the San Francisco Bay. EPA said earlier this month it is launching a three-year plan to help unravel the mystery of why cleanup attempts are failing, and will work with the city to increase awareness among anglers who rely on bay fish […]

(Beyond Pesticides, March 19, 2012) A group of 22 prominent entomologists has submitted formal comments to the U.S. Environmental Protection Agency (EPA) casting doubt on the future viability of certain varieties of genetically engineered (GE) corn. The entomologists, including researchers from land grant institutions in the Corn Belt and the U.S. Department of Agriculture’s Agricultural Research Service, cite increasing evidence that the western corn rootworm is developing resistance to a toxin derived from Bacillus thuringiensis (Bt), which is inserted into seeds. Bt is a naturally occurring soil bacterium that when used in non-genetically engineered forms is an important biological pesticide for organic and sustainable farmers. The entomologists identify significant flaws in current practices for managing insect resistance to Bt corn and caution that failure to implement a series of alternative measures based on an integrated pest management (IPM) approach would result in all forms of Bt losing its effectiveness. The entomologists’ comments were cited recently in published research documenting the first field-evolved resistance of the western corn rootworm to certain Bt strains. They draw a connection between this research and field reports of greater than expected rootworm damage (an indication of emerging resistance) first observed in 2009. Detections of greater […]

(Beyond Pesticides, March 7, 2012) Researchers in Europe have found that the insecticide Bacillus thuringiensis (Bt) when incorporated into genetically engineered (GE) plants, and the herbicide glyphosate, used widely with GE glyphosate-tolerant crops, are toxic to human cells, disputing commonly held assertions by regulators and the chemical industry that these substances are entirely harmless to humans. The research team, led by scientists at the University of Caen in France, says that at very high doses Bt is toxic to human cells, and glyphosate, when formulated as the product Roundup, manufactured by Monsanto Co., damages human cells, even in extremely low doses. The findings of the study have been published online in the Journal of Applied Toxicology. Bt is a commonly used least-toxic insecticide which is available in several different strains, each toxic to a different range of insects. The substance is a naturally occurring soil bacterium that has been harnessed and enhanced to make it more effective as a pesticide product. Crops such as corn and cotton are also often genetically engineered (GE) to produce Bt proteins so that insects are infected with the toxin when they feed on the plant. The French researchers suggest that it may be this […]

(Beyond Pesticides, February 28, 2012) A study by researchers at the University of Padova in Italy and published in the journal Environmental Science and Technology has confirmed the findings of previous research showing that honey bees are exposed to toxic neonicotinoid insecticides during spring seed planting. Neonicotinoids are known to be highly toxic to honey bees and, yet, are used on millions of acres through North America every year. These findings lend even greater urgency to the need to take these chemicals off the market and ensure the continued survival of honey bees and the essential pollination services that they provide for our food system. Neonicotinoids, including clothianidin, imidacloprid, and thiamethoxam, are most commonly applied by coating crop seeds with the chemical. When these treated seeds are planted, the chemical becomes part of the plants vascular system and stays in the plant for the duration of its lifetime, expressing itself in the pollen. Previously, it had been thought that bees were only exposed to these chemicals through pollen and water droplets from treated plants, which would occur later in the season once the plants had grown and bloomed. However, the Italian study shows that bees are actually exposed to high […]

(Beyond Pesticides, February 27, 2012) For the first time since its initial evaluation almost 30 years ago, the U.S. Environmental Protection Agency (EPA) has revised, despite objections from the chemical industry, its dioxin exposure assessment for acute human health risks –setting an “acceptable” level of 0.7 picograms per kilogram per day. Environmentalists said EPA’s estimated average exposure, currently at 0.5—3 picograms per kilogram per day, puts a portion of the population above the EPA danger threshold. Work on updating the health assessment began in 1991 and was partially completed with the February 12 release of the Final Non-Cancer Dioxin Science Assessment. While EPA characterized the findings as showing that “generally, over a person’s lifetime, current exposure to dioxins does not pose a significant health risk,” the Assessment establishes a daily “acceptable” exposure threshold, or reference dose, which the agency says is comparable to levels which people routinely experience. Beyond Pesticides reviewed the underlying chemistry and historical exposure patterns, including diet and human health effects of dioxins, in a recent Daily New blog entry leading up to the Assessment’s release. EPA’s decision to adopt its recommended reference dose of 0.7 picograms of dioxins per kilogram of body weight per day that […]

(Beyond Pesticides, February 22, 2012) Researchers have found high levels of endosulfan, a highly toxic organochlorine pesticide, in the bone marrow of children, including those suffering from hematological malignancies (blood cancers) in areas using the pesticide. Children who have endosulfan in their bone marrow have 7.5 times more risk of developing blood-related cancer compared to those with no detectable pesticide in the bone marrow. While the findings are based on research in India, the insecticide is still used in the production of dozens of crops in the U.S., even though EPA found that exposure to the chemical exceeds the agency’s acceptable risk criteria and announced in 2010 a six-year negotiated phase-out plan with industry that stretches from 2012 to 2016. Following a lawsuit filed against the U.S. Environmental Protection Agency (EPA) in 2008, which cited EPA’s glaring omission in not considering risks to children, EPA announced in 2010 that it would, instead of stopping exposure to a known hazard immediately, phase-out over a six year period all uses of endosulfan in the U.S. Rather than regulating a stop use, EPA astounded many in the environmental and public health community by negotiating a long phase-out agreement with manufacturers that allows some […]

Beyond Pesticides, February 21, 2012) Last week, the Monterey County Board of Supervisors urged California Governor Jerry Brown to reconsider the state’s approval of the carcinogenic fumigant methyl iodide. Monterey County, one of the largest agricultural counties in California, joins Santa Cruz County in mounting pressure to re-examine the controversial decision to approve the toxic chemical as a replacement to the ozone-depleting methyl bromide. This news comes at the heels of the announcement earlier this month that Gov. Brown appointed Brian Leahy, a former organic farmer and the former assistant director at the California Department of Conservation, to head the state Department of Pesticide Regulation (DPR). According to The Californian, agricultural interests present asked County Supervisors to take no action. However, with dozens of local farm workers in attendance pleading their case, the board passed the resolution on a 4-1 recommending that Gov. Brown take another look at the fumigant. Methyl iodide is known to cause miscarriages, thyroid dysfunction, and cancer, and is applied to crops like strawberries and peppers. It was approved by California state pesticide regulators in December as an alternative to methyl bromide, an ozone-depleting chemical being phased out under international treaty. In 2007, EPA fast-tracked the […]