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Daily News Blog

03
Nov

Bee Die-Offs Linked to Pesticide Mixtures, Window of Exposure

(Beyond Pesticides, November 3, 2009) Research by scientists at the University of Florida (UF) links Colony Collapse Disorder (CCD), the widespread disappearance of honey bees that has killed off more than a third of commercial honey bees in the U.S., to larval exposure to a cocktail of frequently used pesticides. Led by UF Institute of Food and Agricultural Sciences bee specialist Jamie Ellis, PhD, the researchers have finished a first round of testing on bee larvae exposed to the pesticides most commonly found in bee hives. The results were presented on October 22 at a meeting of the North American Pollinator Protection Campaign (NAPPC), which funded the study.

The work gives insight into how the larvae react to these pesticides, which are usually only tested on adult bees, and sets the stage for the researchers to test the bees’ reaction to combinations of these pesticides. Just like mixing the wrong medications can have deadly and unpredictable results in humans, chemical mixtures pose a quandary for the bee industry. Bees are commonly exposed to multiple pesticides that are either applied to or nearby their hives.

“Beeswax, honey and pollen can contain low mixtures of fungicides, insecticides, and herbicides. The larvae develop in the presence of and consume these mixtures,†Dr. Ellis said. “Any one of these pesticides may not be that harmful to the developing larvae. However, it is possible that combinations of the pesticides can interact.â€

The work is among the first to look at such combinations of chemicals introduced at the larval stage. The study examines the individual effects of herbicides, fungicides and insecticides commonly found in bee hives (chlorothalonil, mycobutanil, simazine, glyphosate, chlorpyrifos, coumaphos, fluvanlinate, imidacloprid and amitraz). To study these pesticides, the researchers transferred individual larvae to special containers where they were given a typical diet containing a dose of the pesticide.

Some of the pesticides yielded surprising results. For example, the bees seemed to show an erratic response to coumaphos and fluvalinate, which are commonly used to kill hive-infecting Varroa mites. This could mean that some bees have become resistant to the pesticide while others have not, said Mike Scharf, PhD, a UF entomologist and co-primary investigator on the project.

“There’s a really complex and unpredictable interaction of chemicals and genetics at play,†Dr. Scharf said. Even more so, he added, when the bees are exposed at the larval stage. Pesticide exposure at this developmental stage could have significant effects on the adult bees.

Later research will reintroduce these adult bees into the hive to see how the pesticide-exposed bees react to common stressors, such as Varroa mites and bacterial infections.

“It is going to be a lot of work to run through all these scenarios, but at the end of the day, it’s the only way to really find out how all these factors come together,†Dr. Ellis said. “It’s worth the work. Bees are a fundamental part of our ecosystem and our food chain.â€

Dr. Ellis says the research will be submitted for publication by the end of the year.

Research is ongoing as to the cause of the CCD phenomenon, but pesticides, especially neonictinoids, such as imidacloprid, have been implicated. CCD can be especially devastating since honeybees are essential pollinators of crops that constitute over one third of the U.S. food supply or $15 billion worth of food. For more information on pollinators and CCD, read our factsheet: Pollinators and Pesticides: Escalating crisis demands action.

Beyond Pesticides believes that pesticides are likely to be a part of the CCD equation and a precautionary approach must be taken. Solutions to the loss of bees and human productivity are clearly within our reach if we engage our communities and governmental bodies. We know how to live in harmony with the ecosystem through the adoption of sustainable practices that simply do not allow toxic pesticide use. Because our survival depends on healthy pollinators, we must do everything in our power to solve this problem.

Read other Daily News Blog postings on pollinators and pesticides.

Take Action: Email EPA Administrator Lisa Jackson and tell EPA to take a precautionary approach regarding pesticides that kill or have sublethal impacts on bees and other pollinators.

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02
Nov

Ireland Passes Policy to Become Genetically Modified Crop-Free

(Beyond Pesticides, November 2, 2009) Ireland has passed a policy banning the cultivation of all genetically modified (GM) crops and introducing a voluntary GM-free label for food — including meat, poultry, eggs, fish, crustaceans, and dairy produce made without the use of GM animal feed as a way “[t]o optimize Ireland’s competitive advantage as a GM-Free country.†The policy is a part of the Renewed Programme for Government agreement that was adopted in October and is supported by many stakeholder groups, including the Irish Cattle and Sheepfarmers Association who have been working on this issue since 2004.

The passage of the policy is at a time when the international market for GM-free animal produce is growing rapidly. Across Europe, hundreds of leading food brands and dozens of leading retailers now offer premium meat, fish, eggs, poultry eggs and dairy produce made without the use of GM feedstuffs. These are backed by GM-free labels and Government regulations in Austria, Italy, Germany, with France to follow later this year. Sales of GM-free milk have skyrocketed since the label came into effect in Germany.

In the U.S., to which Ireland exports vast quantities of dairy produce (including milk powder and casein for cheese production), leading food manufacturers, retailers, processors, distributors, farmers, seed breeders and consumers have set up joint venture called the Non-GMO Project, which already provides GM-free labels for over 1,000 food products by individual manufacturers in addition to thousands of GM-free private retail brands. The Non-GMO (genetically modified organism) Project focuses on the belief that everyone deserves the information to make an informed choice about whether or not to consume genetically modified products, and a common mission to ensure the sustained availability of non-GMO choices. The Non-GMO Project has enrolled over 1,000 food products by individual manufacturers in its non-GMO verification program, in addition to thousands of private retail labels that are also in the process of becoming “â€ËœNon-GMO Project Verified.â€

Ireland’s geographical isolation and offshore Atlantic western winds provide a natural barrier to contamination by wind-borne GM pollen drift from countries such as the UK and Spain, which still allow commercial release and/or field trials of GM crops. There has never been any commercial release of GM crops on the island of Ireland, and the only field trial of GM crops that took place in the Republic was stopped by protestors in 1998. This is not the case in other European Union (EU) member states. Despite national and regional bans or moratoria on the commercial cultivation of GM crops in Austria, France, Germany, Greece, Hungary, Italy, Poland and Switzerland, many of these countries have previously allowed (or been illegally subjected to) the commercial release of GM crops, and many of them still allow uncontained GM field trials. Banning GM crops in a given country does not guarantee their absence there, and conducting field trials usually results in contamination, which can travel across borders and is frequently irreversible.

In 2007, the Irish Government adopted a weaker policy “to seek to negotiate to declare the island of Ireland as a GMO-free zone,†but failure to define the implications of the policy for GM animal feed created confusion in the farming sector and the Government failed to even draft any related legislation to implement the policy. That said, Ireland did stop voting in favor of new GMOs in Brussels and has since joined the majority of EU member states that back an Austrian proposal, presented in June 2009, for the EU Commission to allow national bans on GM crops. The Austrian proposal is co-signed by Bulgaria, Cyprus, Greece, Hungary, Ireland, Latvia, Lithuania, Malta, Slovenia and the Netherlands; it was subsequently backed by France, Poland, Portugal, and parts of the German government, and is now supported by the majority of member states.

Although Ireland’s new affirmative GM-free policy unambiguously aims to ban both commercial release as well as field trials of GM crops, it requires implementing legislation in the Republic, as well as Northern Ireland to prevent contamination from across the border. Although the UK is one of the few remaining EU member states whose government still officially supports GM food and farming, the UK regions of Scotland and Wales also strongly oppose the release of GM crops. This leaves Westminister isolated with only a few English counties still in favour of GM crops in the whole of the UK.

Michael O’Callaghan of GM-free Ireland said the policy signals a new dawn for Irish farmers and food producers, “The WTO’s economic globalization agenda has forced most Irish farmers to enter an unwinnable race to the bottom for low quality GM-fed meat and dairy produce, in competition with countries like the USA, Argentina and Brazil which can easily out-compete us with their highly subsidized GM crop monocultures, cheap fossil fuel, extensive use of toxic agrochemicals that are not up to EU standards, and underpaid migrant farm labor. Meanwhile, hundreds of European food brands, retailers and Regions now offer GM-free beef, pork, lamb, poultry, eggs, fish and dairy produce as part of their Food Safety, Quality Agriculture, Biodiversity, Fair Trade, Sustainable Development and Climate Change strategies. Thousands of brands in the USA are doing likewise. Without a GM-free label to distinguish our produce, Irish food is being excluded from this global market.â€

“Ireland has taken a truly inspiring step towards ensuring consumers’ right to choose non-GMO products,†said Executive Director of the Non-GMO Project Megan Thompson. “As more and more companies in the USA and Canada are looking for non-GMO ingredients, this is a very timely move and we look forward to developing sourcing opportunities with GM-free producers in Ireland.â€

In the U.S., environmental and public health groups believe that, at a very minimum, labeling as a means of identifying products that contain GM ingredients are critical and complete regulatory review of all GM crops, which is currently not the case. Organic agriculture does not permit GE crops or the use of synthetic herbicides, and focuses on building the soil—minimizing its effect on climate change. For more information, see Beyond Pesticides’ GE program page.

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30
Oct

Lupus and other Autoimmune Diseases Linked to Insecticide Use

(Beyond Pesticides, October 30, 2009) A recent study shows that women who use insecticides are at elevated risk for autoimmune diseases such as rheumatoid arthritis and lupus. The results of the yet unpublished study were presented on October 17, 2009 at the American College of Rheumatology annual meeting in Philadelphia, PA.

The study, which looked at more than 75,000 women, shows that those who spray insecticides at least six times per year have almost two and a half times the risk of developing lupus and rheumatoid arthritis versus those who do not use insecticides. The risk doubles if insecticides were used in the home for 20 years or more.

Hiring a gardener or commercial company to apply insecticides also resulted in a doubling of risk, but only if they were used long-term, says Christine G. Parks, PhD, an epidemiologist with the National Institute of Environmental Health Sciences in Research Triangle Park, N.C., one of the lead researchers who analyzed data from the Women’s Health Initiative (WHI) Observational Study.

“Our new results provide support for the idea that environmental factors may increase susceptibility or trigger the development of autoimmune diseases in some individuals,” said Dr. Parks. While the study does not confirm cause and effect, Dr. Parks added, “We need to start thinking about what chemicals or other factors related to insecticide use could explain these findings.â€

Of the 76,861 postmenopausal, predominantly white women, ages 50 to 79, in the WHI study, 178 of them had rheumatoid arthritis and 27 had lupus. An additional eight women had both disorders. As part of the study, the women were asked a number of questions relating to farming and insecticide use. “Importantly, the relationships we observed were not explained by other factors that we considered, including farm history, age, race, ethnicity, socioeconomic factors such as education and occupation, smoking and other risk factors for disease,” Dr. Parks said.

“The findings are fairly compelling” because they show the greater and longer the exposure, the greater the risk,” said Darcy Majka, MD, assistant professor of medicine at Northwestern Univ\ersity Feinberg School of Medicine, another researcher who analyzed the WHI data.

According to Dr. Parks, studies show that up to three fourths of U.S. households reported using insecticides in either or both the home and garden, and 20% of the households had applied insecticides within the last month. “Insecticide exposure in the home can be quite persistent because [the chemicals] don’t break down in the home environment.â€

Beyond Pesticides has reported about potential autoimmune effects because of pesticides. In Nevada in September 2009, Nevada Division of Environmental Protection (NDEP) officials said that its department was too busy to make sure they properly cleaned and closed a pesticide container site in Antelope Valley. Residents in the area have reported an unexpected number of rare cancers and immune diseases in the valley over the last decade and have long suspected contamination from the dump site for the outbreak.

With new information like this study showing correlations between pesticides and autoimmune diseases, advocages say it is critical to start and continue to use alternatives to harmful pesticides.

For more information please see our Lawns and Landscapes program page and our Alternatives factsheets page.

Source: WebMD Health News

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29
Oct

Florida Golf Course Discontinues Use of Arsenic Weed Killer

(Beyond Pesticides, October 29, 2009) Concerns from the Florida Department of Environmental Protection (DEP) about groundwater contamination in a golf course have temporarily halted the use of an herbicide by the Tampa Sports Authority. Recent soil and groundwater testing in Tampa has revealed higher than acceptable levels of arsenic that may be attributed to the use of the arsenical herbicide monosodium methanearsonate (MSMA) on the golf course, Rogers Park.

According to the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Health and Human Services, chronic exposure to organic arsenic, such as MSMA, is known to cause cancer and has been linked to heart disease, diabetes and declines in brain functions. It is also been identified as a potential leacher and is toxic to birds, fish, aquatic organisms and bees.

EPA’s Reregulation Eligibility Decision (RED) states that most uses of this product as well as other arsenical herbicides, disodium methanearsonate (DSMA) and hydroxydimethylarsine oxide (cacodylic acid, or sodium salt) are banned except for use on cotton, and will be phased out by the end of 2013, in two phases.

In the meantime, many new restrictions apply in an attempt to protect water resources. For instance, MSMA use on golf courses, sod farms, and highway rights-of-way will be canceled as of December 31, 2012, with use of existing stocks permitted through 2013 –a phase-out approach to regulation that health and environmental advocates have criticized as inadequately protective. The following new use restrictions will apply for golf courses: spot treatments only (100 sq feet per spot), not to exceed 25 percent of the total golf course acreage per year; and one broadcast treatment for newly constructed courses only. In addition, the requests terminate all uses of MSMA in Florida except for use on cotton grown in Calhoun, Columbia, Escambia, Gadsden, Hamilton, Holmes, Jackson, Jefferson, Okaloosa, Santa Rosa, Suwannee, Walton, and Washington counties.

Unfortunately, herbicidal arsenicals are only one small part of the larger problem of herbicides used on golf courses. Golf courses consistently have one of the most highly concentrated per acre use of pesticides than any other land area. The extensive use of pesticides on golf courses raises serious questions about people’s toxic exposure, drift over neighboring communities, water contamination, and effects on wildlife and sensitive ecosystems.

Perhaps more troubling, this particular park has a youth program in which approximately 300 kids came out to hit balls at the golf courses driving range or play a two-hole match game. This in itself negates EPA’s rebuttal to a Golf Digest article last year, “How Green is Golf?,†in which EPA failed to recognize the harmful effects that golf course chemicals may have on children under the age of six if they are exposed. Children are especially vulnerable to lawn chemicals and pesticides and suffer their greatest risk of adverse effect during this period of life.

The good news is that there are plenty of cost effective ways in which golf courses can reduce pesticide use, and many courses around the country are striving for ways to reduce the environmental impact of golf course management by seeking Integrative Pesticide Management (IPM strategies). Leading golf courses, such as Bethpage State Park are proving that they can have fast greens and outstanding playing conditions without the massive load of chemical pesticides and fertilizers.

For more information on issues surrounding pesticides and golf, see Beyond Pesticides Golf and the Environment program page. If you like to golf or live near a golf course, check out the Environmental Principles for Golf Courses in the United States, a set of principles jointly developed by a group of leading golf and environmental organizations that seeks to produce environmental excellence in golf course planning and siting, design, construction, maintenance and facility operations, and encourage your local golf course to adopt these principles.

If golf courses can eliminate pesticides, so can homeowners! For more information on cost effective ways of eliminating lawn pesticides, see Beyond Pesticides Lawns program page.

Source: Tampa Bay Online

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28
Oct

Scientists Again Raise Health Concerns about Use of Toxic Fumigant Methyl Iodide

(Beyond Pesticides, October 28, 2009) Transcripts released last week from an external peer review panel convened in September to evaluate California’s Department of Pesticide Regulation’s (DPR) risk assessment of the fumigant methyl iodide show that the panel’s leading scientists have serious concerns about this chemical. Methyl iodide is currently being considered for use on California’s crops, especially strawberries.

The scientific panel held a public workshop, entitled “Methyl Iodide External Peer Review Panel Workshop,†on September 24-25, 2009 in Sacramento, CA as part of an additional, external peer review for methyl iodide. Previously planned public and scientific review processes were subject to cancellation or postponement by the Governor’s office. Led by John Froines, Ph.D., director of the Center for Occupational and Environmental Health at the University of California, Los Angles, the panel consisted of eight experts in various scientific fields. The scientists expressed concern over inadequate buffer zones, ground water contamination and drinking water exposures, body burden, neuro-degeneration, reproductive toxicity and carcinogenicity that are associated with methyl iodide use and exposures. Panel members also challenged EPA’s assessment and found EPA’s scientific conclusions on methyl iodide to be lacking. The transcripts and other workshop presentations are available here. These concerns underscore previous opposition to the use of methyl iodide, including a letter from a group of over 50 of the nation’s most eminent scientists, including five Nobel Laureates that raised serious objections to EPA’s approval of the product.

DPR’s draft methyl iodide risk assessment has already undergone peer review by the Office of Environmental Health Hazard Assessment, part of the California Environmental Protection Agency, and the U.S. Environmental Protection Agency (EPA). If registered as a soil fumigant, methyl iodide would be applied primarily in California’s strawberry fields before planting, and as a gas it would drift away from the application site, and expose neighboring residents and farmworkers in nearby fields. Methyl iodide is a threat to air and water supplies and has been linked to very serious illnesses, including cancer, miscarriages, thyroid toxicity, and neurological problems.

In 2007, EPA fast-tracked the registration of methyl iodide (a Proposition 65 carcinogen in California) for use as a soil fumigant, despite serious scientific concerns. State legislators also signed a letter to Governor Schwarzenegger urging to keep the controversial pesticide out of California’s strawberry fields. The health concerns associated with methyl iodide suggest the need for continued exploration of safer alternatives, according to advocates. The University of California Cooperative Extension has already experimented with alternatives to pesticide use, including steam and heat. Other alternatives include organic practices which have shown that crops, like strawberries, can be grown organically.

Source: California DPR
Woodland Daily Democrat

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27
Oct

U.S. Court Reverses Judgment Against Dole and Dow Chemical for Sterile Banana Workers

(Beyond Pesticides, October 27, 2009) U.S. District Judge Paul Huck (Miami) has said a multimillion dollar judgment against U.S. food giant Dole and the Dow Chemical Company cannot be enforced because, “[T]he judgment was rendered under a system which does not provide impartial tribunal or procedures compatible with the requirements of due process of law, and the rendering court did not have jurisdiction over Defendants.†A trial court in Chinandega, Nicaragua, had awarded the money in 2005 to 150 Nicaraguan citizens who believe they were injured by exposure to the pesticide dibromochloropropoane, or DBCP, when they worked on Dole banana plantations between 1970 and 1982. This actiion was taken despite findings in the U.S. that DBCP causes sterility and regulatory action to remove it from the market.

The trial court awarded Plaintiffs approximately $97 million under “Special Law 364,†enacted by the Nicaraguan legislature in 2000 specifically to handle DBCP claims. The average award was approximately $647,000 per plaintiff. According to the Nicaraguan trial court, these sums were awarded to compensate plaintiffs for DBCP-induced infertility and its accompanying adverse psychological effects.

In similar cases in the past, the companies have refused to pay. Dow Chemical has called such judgments “unenforceable†because the ruling was “based on a law passed in Nicaragua that its own attorney general has called unconstitutional.†Judge Huck says that the law “unfairly discriminates against a handful of foreign defendants with extraordinary procedures and presumptions found nowhere else in Nicaraguan law.â€

Dole claims that Nicaraguan courts have issued judgments in 32 such suits for a total of $2.05 billion against Dole and pesticide makers since 2002. After this ruling, it is unlikely that Dole and Dow will pay any settlements to injured Nicaraguan banana workers.

According to the Los Angeles Times, Dole argued that the 2001 Nicaraguan law is biased against defendants like itself. They say the statute was enacted to litigate injury claims against foreign corporations by banana workers and presumes that DBCP causes sterility and other injuries. Environmentalists and public health advocates argue that decades of EPA data confirms that DBCP exposure is linked to adverse health impacts, and that use of the pesticide continued abroad after it was banned for causing sterility in the U.S.

Until 1977, DBCP was used in the U.S. as a soil fumigant and nematocide on over 40 different crops. From 1977 to 1979, EPA suspended registration for all DBCP-containing products except for use on pineapples in Hawaii. In 1985, EPA issued an intent to cancel all registrations for DBCP, including use on pineapples. Subsequently, the use of existing stocks of DBCP was prohibited. In Nicaragua, DBCP was legal from 1973 until 1993.

EPA’s website states the following:

Acute (short-term) exposure to DBCP in humans results in moderate depression of the central nervous system (CNS) and pulmonary congestion from inhalation, and gastrointestinal distress and pulmonary edema from oral exposure. Chronic (long-term) exposure to DBCP in humans causes male reproductive effects, such as decreased sperm counts. Testicular effects and decreased sperm counts were observed in animals chronically exposed to DBCP by inhalation. Available human data on DBCP and cancer are inadequate. High incidences of tumors of the nasal tract, tongue, adrenal cortex, and lungs of rodents were reported in a National Toxicology Program (NTP) inhalation study. EPA has classified DBCP as a Group B2, probable human carcinogen.

Read the judgment here.

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26
Oct

New Study Links Suicidal Thoughts to Pesticides

(Beyond Pesticides, October 26, 2009) A new study conducted in China finds that people with organophosphate pesticides in their homes are more likely to have suicidal thoughts. According to the study, “Pesticide exposure and suicidal ideation in rural communities in Zhejiang province, China,†published in the October issue of the WHO Bulletin, there is biological evidence that chronic low-grade exposure to organophosphate pesticides, which are very easily absorbed into the body through the skin and lungs, may have adverse effects on mental health.

The study was carried out in the central/coastal region of China, a relatively wealthy area with a rapidly developing economy. In a very large survey of mental health in rural community residents, participants were also asked about how they stored pesticides. The study found that people who stored pesticides at home, i.e. those with more exposure, were more likely to report recent suicidal thoughts. Supporting this, the survey also found suicidal thoughts to be associated with how easily accessible these pesticides were in the home and that the geographic areas with highest home storage of pesticides also had highest levels of suicidal thoughts in their populations.

“Organophosphate pesticides are widely used around the world. They are particularly lethal chemicals when taken in overdose and are a cause of many suicides worldwide,†stated one of the study researchers, Dr. Robert Stewart. “Our research findings that suggest that higher exposure to these chemicals might actually increase the risk of suicidal thoughts provides further support for calls for tighter international restrictions on agricultural pesticide availability and use.â€

The analysis involved data from a survey of a representative sample of 9,811 rural residents in Zhejiang province who had been asked about the storage of pesticides at home and about whether or not they had considered suicide within the two years before the interview. The Chinese version of the 12-item General Health Questionnaire (GHQ) was administered to screen for mental disorder.

According to the study findings, the odds ratio for the association between pesticides stored at home and suicidal ideation over the 2 years prior to the study was more than double. Of the pesticides stored at home, nearly 87 percent comprised or included organophosphates. The most commonly stored pesticide was methamidophos, which was present in 63 percent of households that stored pesticides.

Previous studies have shown that farmers often have higher rates of depression than other population groups. A study published in 2008, “Depression and pesticide exposures among private pesticide applicators enrolled in the Agricultural Health Study,†found that both acute high-intensity and cumulative pesticide exposure contribute to depression in pesticide applicators. Another 2008 study “A cohort study of pesticide poisoning and depression in Colorado farm residents,†found adverse effects on mental health such as irritability were associated with pesticide poisoning.

A 2002 study found that farmers poisoned by agricultural pesticides containing organophosphates are nearly six times as likely to suffer depression in their lifetimes as compared to their counterparts. The study showed that populations exposed to the agricultural pesticides also face long-term risks of anxiety, irritability, restlessness and depression. In the study, 69 participants reported having been sickened by pesticide poisoning. Other study findings include that the Colorado farm population was more likely to have high depressive symptoms if they were female and in poor physical health and younger farmers were more likely to have high depressive symptoms compared to older farmers.

Organophosphates are a family of insecticides that are derived from World War II nerve agents. They are cholinesterase inhibitors, meaning that they bind irreversibly to the active site of an essential enzyme for normal nerve impulse transmission, acetylcholine esterase (AchE), inactivating the enzyme.

Beyond Pesticides supports organic agriculture as effecting good land stewardship and a reduction in hazardous chemical exposures for workers on the farm. The pesticide reform movement, citing pesticide problems associated with chemical agriculture, from groundwater contamination and runoff to drift, views organic as the solution to a serious public health and environmental threat. Organic agriculture embodies an ecological approach to farming that does not rely on or permit toxic pesticides, chemical fertilizers, genetically modified organisms, antibiotics, sewage sludge, or irradiation. Instead of using these harmful products and practices, organic agriculture utilizes techniques such as cover cropping, crop rotation, and composting to produce healthy soil, prevent pest and disease problems, and grow healthy food and fiber.

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23
Oct

Samsung Fined For Antimicrobial Keyboard Claims

(Beyond Pesticides, October 23, 2009) The U.S. Environmental Protection Agency (EPA) fined Samsung for violating the federal pesticide law when it publicized that its keyboards, produced with nanosilver, were antimicrobial and inhibited germs and bacteria without registering its products with EPA. The claims made on the company’s labels and promotional material for netbook and notebook computer laptops would render the products pesticides, requiring registration by EPA. Dell also has keyboards treated with nanosilver for antimicrobial purposes which are registered with EPA.

Nanosilver has been promoted for its antibacterial properties and is used in many products such as sporting goods, band-aids, clothing, baby and infant products, and food and food packaging. However, very little is known about where these particles end up when such products are put to use. Many consider silver to be more toxic than other metals when in nanoscale form and that these particles have a different toxicity mechanism compared to dissolved silver. Scientists have concluded that nanoparticles can pass easily into cells and affect cellular function, depending on their shape and size. Preliminary research with laboratory rats has found that silver nanoparticles can traverse into the brain, and can induce neuronal degeneration and necrosis (death of cells or tissue) by accumulating in the brain over a long period of time.

The federal pesticide law, the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), is designed to regulate the sale and use of pesticides in the U.S. Before a pesticide can be sold or distributed in the country, FIFRA requires that registration be obtained from EPA. In making a registration decision, EPA must determine that the pesticide, when used in accordance with label directions, will not cause unreasonable adverse effects to human health or the environment. Without a pesticide product in its registration database, EPA cannot, for example, prescribe labeling requirements that set forth effective warnings and specific directions for use. Under FIFRA, silver nanoparticles meet the definition of a pesticide; that is, as a substance that is intended to disinfect, sanitize, reduce, or mitigate growth or development of microbiological organisms. As such, silver nanoparticles, with their antimicrobial activity, should and must be regulated by EPA as a pesticide.

Consumer products that include nano-based technologies continue to grow, and cases like this have become much more common, including a recent lawsuit involving the sale and distribution of unregistered pesticides by The North Face. An AgION silver treated footbed, which the company claimed to have antimicrobial properties, was featured in over 70 styles of their shoes.

In this case, Samsung will pay a $205,000 fine and provide a certification that it has complied with FIFRA by removing all pesticidal claims made in connection with the sales and distributions of these products. Additionally, Samsung has notified its retailers and distributors to remove any pesticidal claims from labels, promotional brochures and internet/Web-based content for the subject products.

For more information on nanosilver, visit the Nanosilver section at our Antibacterial Program Page.

Source: EPA Press Release

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22
Oct

Pesticide Storage Endangers Tens of Millions in Europe, Central Asia and the former Soviet Union

(Beyond Pesticides October 22, 2009) At least seven million inhabitants of Moldavia and Ukraine are endangered by 10,000 tons of old pesticides. This has been reported by the International HCH and Pesticides Association (IHPA). According to the organization the EU must act as fast as possible to disarm this â€Ëœbiggest chemical time bomb of Europe.’ This position was adopted at the closure of the 10th HCH & Pesticides Forum of the IHPA in the Czech Republic.

During the congress, it became known that in the former Kalush factory in the west of Ukraine there is a stockpile of no less than 10,000 ton of superfluous Hexachlorobenzene (HCB). The factory location along the Dniester River makes the situation extremely hazardous: a single flood and the high concentrations of poison would pollute the natural habitat of some seven million people in the west of Ukraine and Moldavia.

Pesticides are threatening tens of millions of people living throughout Europe, Central Asia, and the former Soviet Union, accordding to the statement. There is an estimated 178,000 to 289,000 tons of obsolete pesticides stockpiled throughout the European Union, Southeast Europe, and the former Soviet Union. Ukraine alone has 4,500 storage locations with over 30,000 tons of old pesticides. These pesticides have been prohibited since 2001. The packaging only lasts between five and ten years, so if nothing is done in that time, the pesticides could end up in the water or the soil.

The IHPA reports that it is the rural population which is in danger. The World Health Organization (WHO) has estimated that by 2050 50 percent of people will die from cancer due to the contamination in food, water and the environment. A major portion will be caused by pesticides. There’s also the threat of major financial losses. The relatively minor Nitrofen scandal (2002) in the former East Germany alone cost a total of 500 million euro.

The IHPA estimates that the stabilization or destruction of all current stocks of superfluous pesticides amounts to one billion euros. In the final statement, the IHPA calls on the European Commission to make haste in developing a solid plan of action, in close cooperation with the EU member states, the non-EU countries covered by the European Neighborhood Policy and the relevant countries in Central Asia.

Hexachlorobenzene (HBC) is a pesticide in the organochlorine family. Most organochlorine pesticides have been banned due to their toxicity, environmental persistence, and tendency to bioaccumulate. Other harmful organochlorine pesticides are endosulfan, DDT and lindane. Some highly reactive organochlorides such as phosgene have even been used as chemical warfare agents.

Organochlorine contaminants bioacummulate and remain preferentially in fat, and concerns about theri long-term effects are well-documented. The use of organochlorines has been controversial for decades because of its cancer causing and neurotoxic properties. Organochlorines interfere with the flux of cations across nerve cell membranes, and the adverse health effects include apprehension, agitation, mental/motor impairment, excitation vomiting, stomach upset, abdominal pain, central nervous system depression, convulsions, muscle weakness and spasm, loss of balance, grinding of the teeth, hyperirritability, violent seizures, increased respiratory rate and/or failure, dermatitis, immunotoxicity, and fetotoxicity.

Exposure to organochlorines is associated with Non-Hodgkin Lymphoma. The study, “Organochlorines and risk of non-Hodgkin lymphoma,” was published in the International Journal of Cancer on December 15, 2007 with new research funded by the British Columbia Cancer Agency and is so far the largest to examine organochlorines in plasma and their link to illness. “Our study helps to provide answers to this puzzle by showing a strong link between these specific environmental contaminants and this particular type of cancer.†Participants with NHL showed much higher levels of environmental contaminants than the control group. Individuals who had the highest total exposure to PCBs showed almost twice the risk of NHL compared to those with the lowest exposure.

While many countries have phased out the use of some types of organochlorines such as the U.S. ban on DDT, persistent DDT, PCBs, and other organochloride residues continue to be found in humans and mammals across the planet many years after production and use have been limited.


Source: IHPA Press Release

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21
Oct

White House Orders EPA to Move on Endocrine Disrupting Pesticides without Data; EPA Seeks Approval of Guidelines

(Beyond Pesticides, October 21, 2009) The U.S. Environmental Protection Agency (EPA) is making available the battery of scientific assays and test guidelines for conducting the assays for each of 67 chemicals included for Tier 1 testing for endocrine disrupting effects during the next three months. This comes after the Office of Management and Budget (OMB) instructed EPA to use existing toxicity data rather than require companies to conduct new tests to determine whether chemicals can damage the human endocrine system.

With the availability of the assays and test guidelines, EPA will move forward with issuing test orders to manufacturers to compel the generation of the needed data. However, acquisition of new, relevant data may be limited. This is because after EPA submitted the request for additional information for OMB approval, the Office issued a directive that approved EPA’s request to collect additional data for the 67 chemicals but warned the agency that it should “to the greatest extent possible” accept existing data to satisfy test requirements.

The OMB directive, which observers say contains unusually strong language, is being hailed by industry groups that had been concerned about the prospects for expensive testing mandates. But many environmental groups and scientists say OMB’s directive will undermine the endocrine program which has already been plagued with short-comings, including a thirteen year delay after the Food Quality Protection Act (FQPA) of 1996 ordered EPA to develop a screening process for endocrine disrupting chemicals.

The tests are to help EPA identify whether chemicals have the potential to interact with the estrogen, androgen, and/or thyroid hormone systems, which regulate growth, metabolism, development, and reproduction. The program, Endocrine Disruptor Screening Program (EDSP), which according to EPA, has been developed through a multi-year research program and validated through a transparent technical review process, will eventually screen all pesticide chemicals. The data generated from the screens will provide scientific information that will help EPA identify and regulate, as appropriate, potential endocrine disrupting chemicals.

CropLife, a trade association for the pesticide industry, petitioned EPA earlier this year and expressed concern that “unnecessary and redundant testing” could occur if the agency does not review data already submitted by pesticide registrants. EPA rejected the petition, saying it would ensure that each chemical is tested just once. The agency said it also plans to review all information on chemicals submitted by manufacturers, including submissions that cite existing data, and would develop standard evaluating procedures for chemicals.

OMB’s directive would impact the integrity of EPA’s program. Critics of EDSP say that EPA’s testing protocol is already outdated, not being updated since 1998. Since then the science has made progress and become more sophisticated. Current research is based on different assumptions than the toxicological assumptions that first drove the EPA test designs. According to prominent endocrinologist, founder and president of The Endocrine Disruption Exchange, and Co-author of Stolen Future, Theo Colborn, PhD, the agency has ignored the vast wealth of information on endocrine disruption from independent academic researchers. Most important, because of the limited scope of its test battery, EPA is not in a position to address endocrine-related disorders that pose a threat to every child born today.

According to Peter deFur, PhD, a scientist who has served on three federal advisory committees for the program, “This is really short-sighted of OMB, and it indicated to me they don’t understand the science or the toxicology. The language I’ve seen is just shocking for its failure to understand the basic biology behind the endocrine disruptor discussion that’s been going on for 20 years now.”

OMB is also requiring that EPA estimate again the burden of collecting chemical information based on responses it gets to the Tier 1 requirements, which must include cases in which EPA has determined that existing data do not satisfy the testing requirements, before the agency can require data from more chemicals. The test guidelines can be found on EPA website and the schedule of EDSP screening here.

A wide variety of pesticides has been found to affect both human and animal hormone systems at low levels. For an overview of endocrine disruptors, view Beyond Pesticides’ article, “Pesticides that Disrupt Endocrine System Still Unregulated by EPA.

Source: EPA News
New York Times

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20
Oct

USDA and EPA Pushing Coal Ash for Agriculture Despite Toxicity Uncertainty

(Beyond Pesticides, October 20, 2009) The U.S. Department of Agriculture (USDA) and the Environmental Protection Agency (EPA) are asking farmers to use coal ash to grow their crops, despite a paucity of research on possible risks, according to documents released October 15, 2009 by Public Employees for Environmental Responsibility (PEER). USDA endorses use of coal combustion wastes by farmers “for crop production,†while acknowledging uncertainty on the extent to which “toxic elements†are absorbed into produce entering the market. Beyond Pesticides points out that coal ash is just one of many toxic products “recycled†into fertilizer and encourages people to avoid chemical fertilizers all together in favor of compost and other organic methods.

Coal ash spill in Tennessee, December 2008

Coal ash spill in Tennessee, December 2008

This month, USDA enters the final year of a three-year partnership with EPA as part of a larger effort by the American Coal Ash Association, the Electric Power Research Institute and others to “promote appropriate increased use of†coal ash in agriculture. The implementing Memorandum of Understanding obliges USDA to generate “documentation of the effectiveness, safety and environmental benefits, including bioavailability of trace elements such as mercury, arsenic and seleniumâ€Â¦to satisfy the concerns of producers, generators, regulators and the public.â€

According to EPA, agriculture annually uses more than 180,000 tons of coal ash and other coal combustion byproducts. There are no federal standards governing agricultural applications of coal ash. EPA has publicly vowed to promulgate hazardous waste rules by the end of 2009 for coal ash, one year after last December’s disastrous coal ash spills from Tennessee Valley Authority sludge ponds.

“USDA should pull out of the coal ash business tomorrow morning,†stated PEER Executive Director Jeff Ruch, who obtained the documents under the Freedom of Information Act. “USDA does American agriculture no favors by duping farmers into spreading hazardous wastes across their fields.â€

In an April 2, 2009 letter to EPA, USDA Agricultural Research Service Deputy Administrator Steven Shafer expressed “ARS interest†in exploring greater use of coal combustion wastes in crop production as a fertilizer treatment and soil amendment. His letter cites current application of coal ash in growing corn, tomatoes, alfalfa, peanuts, and other crops. While generally sanguine about coal ash use, Mr. Shafer concedes that the “long-term effectsâ€Â¦remain a subject of research.†See USDA talking points.

Nonetheless, EPA promotional materials state that EPA and “USDA support the use of†coal combustion byproducts “in appropriate soil and hydrogeologic conditions as an effective method of soil conservation and industrial material recycling.â€

“The public does not want its food to come from â€Ëœindustrial material recycling’ any more than it wants coal-flavored cauliflower,†Mr. Ruch added. “This coal ash re-use campaign is really just a multi-billion dollar backdoor subsidy to the coal industry to relieve it of the true costs of handling its toxic wastes.â€

Coal ash is not the only fertilizer with potential hazards. According to a report by the California Public Interest Research Group (CALPIRG), the recycling of hazardous industrial wastes into fertilizers introduces several dozen toxic metals and chemicals into the nation’s farm, lawn and garden soils, including such well-known toxic substances as lead and mercury. Many crops and plants extract these toxic metals from the soil, increasing the chance of impacts on human health as crops and plants enter the food supply chain. In CALPIRG tests, each of twenty-nine fertilizers were tested for and found to contain twenty-two toxic metals. Test results for twenty fertilizers showed that they exceed levels of concern for disposal in landfills. Read the Waste Lands report.

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19
Oct

New Jersey Town Adopts Policy to Significantly Reduce Pesticide Use

(Beyond Pesticides, October 19, 2009) The “green†movement continues to sprout throughout New Jersey, as Hamilton Township joins other municipalities in the state that have made their parks pesticide-free zones and have adopted an Integrated Pest Management (IPM) program for managing town property. Responding to the request of local members of the New Jersey Environmental Federation, Hamilton Township recently passed a resolution adopting the Federation’s model pesticide reduction policy.

The policy establishes Pesticide Free Zones for 50 feet surrounding township playgrounds, picnic grounds, pavilions and rest areas, dog parks and ballfields, as well as 300 feet from any stream bank, pond, lake or natural wetland. It also requires the implementation of an IPM program for all township buildings and grounds.

Hamilton Mayor John F. Bencivengo endorsed the policy, stating that it is a great way to educate the public about pesticide use, and ensure that the township continues on its path of “pesticide free zones†in its parks, municipal building and library. Schools in New Jersey are already required by law to follow IPM plans using non-toxic methods first and conventional pesticides only if the non-toxic methods are ineffective.

“It is easy to manage a lawn without harmful chemical pesticides,†said Jane Nogaki, program coordinator for the Federation. Cost-effective and environmental friendly alternatives to pesticides include mechanical pulling of weeds, mulching areas properly to prevent weeds, planting native plants that do not attract insects, and reducing or eliminating lawns to cut down on the need for watering, fertilizing, and mowing.

“[The] Township’s IPM Policy incorporates focusing on long-term prevention and will give non-chemical methods first consideration when selecting appropriate pest control techniques. The Township will strive to ultimately eliminate the use of all chemical controls,†states the policy. “Integrated Pest Management activities will consist principally of using native plant species and biological controls to encourage natural land management. Manual/mechanical controls, such as pulling weeds by hand or mowing, will be the first choice for management of invasive or undesirable plant species when and where most feasible. Other low impact pest management tools are also available for use when manual or mechanical controls are impractical. The use of pesticides should be reviewed and limited so that they are not applied unnecessarily or as a matter of routine. Where plant, fungal or insect pests become otherwise unmanageable by the various low impact pest management methods, pesticides may be used as a control method of “last resort.†When pesticide use is required, public notification shall be made.†In addition, pesticides may not be used for aesthetic/cosmetic purposes.

According to the policy, low impact management tools include native plantings, hand weeding, cutting and mulching, and products containing vinegar or citric acid, corn gluten, neem, horticultural oil, potassium soaps of fatty acids, boric acid, diatomaceous earth, microbe based insecticides (Bt), non-pesticide pest traps and biological controls (predator species).

Many scientific studies indicate that pesticides threaten the public’s health by increasing the risk of cancer, learning disabilities, asthma, birth defects, kidney disease and other ailments. These chemicals can also poison animals, pollute local streams and rivers and seep through the ground into our underground aquifers. Every body of water tested in New Jersey exhibits evidence of pesticide contamination, according to a study by the U.S. Geological Survey. Children are especially sensitive and vulnerable because of their rapid development and behavior patterns.

Currently, New Jersey uses about four million pounds of pesticides annually for lawn care, mosquito control, agricultural production, and golf course maintenance.

Hamilton Township joins 31 other communities in New Jersey that have designated Pesticide Free Zones in parks including Burlington and Cape May Counties, and the townships of Bernards, Chatham, Cherry Hill, Collingswood, Asbury Park, East and West Windsor, Hightstown, Montclair, Ocean City, Dennis, Colts Neck, Hazlet, Neptune, Red Bank, Pine Beach and Wall Townships.

“We also need residents to do their part in reducing pesticides in our environment and keeping our air, water and land safe from toxic chemicals,†said Ms. Nogaki. “Residents can participate by making their own property a “Pesticide Free Zone.â€

The passage of pesticide-free and pesticide reduction policies are taking place around the country. For example, the New York State Parks recently passed a similar policy that also establishes pesticide-free zones. In addition, Chicago City Parks has reduced pesticide use by 80 percent in their parks, many of which are pesticide-free; in the Northwest U.S. there are more than 50 parks; as well as in communities throughout Massachusetts, Maine, New York and Connecticut. This is just the tip of the iceberg, as new policies and programs are continually being implemented by local and state government entities as well as schools and homeowner associations. For a fuller list of examples see Beyond Pesticides activists tools pages.

For more information, see resources available through the New Jersey Environmental Federation and Beyond Pesticides Lawn and Landscape program page.

Source: New Jersey Environmental Federation

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16
Oct

Groups Petition EPA to Require Buffer Zones Around Pesticide Sprayed Farms

(Beyond Pesticides, October 16, 2009) On October 14th, Earthjustice and Farmworker Justice filed a petition asking the U.S. Environmental Protection Agency (EPA) to set safety standards protecting children who grow up near farms from the harmful effects of pesticide drift. The groups are also asking the agency to adopt an immediate no-spray buffer zone around homes, schools, parks and daycare centers for the most dangerous and drift-prone pesticides, organophosphates.

The petition was filed by the public interest law firms on behalf of farmworker groups: United Farm Workers, Oregon-based Pineros y Campesinos Unidos del Noreste, California Rural Legal Assistance Foundation, and the Farm Labor Organizing Committee, AFL-CIO as well as Physicians for social Responsibility, Washington-based Sea Mar Community Health Center, Pesticide Action Network North America, and MomsRising.org.

Specifically, the petition states that the EPA has failed to address the facts that children are particularly vulnerable to pesticides according findings by the National Academy of Sciences (NAS) in 1993. Congress took recommendations from NAS and passed the Food Quality Protection Act in1996, requiring EPA to “ensure that there is a reasonable certainty that no harm will result to infants and children from aggregate exposure†to pesticides.

However, while EPA has made some progress in canceling numerous home uses of pesticides because of excessive risks to children, the harmful effects of pesticide drift from agricultural areas was ultimately ignored. According to the petition, EPA’s failure comes despite its acknowledgment of its obligation to protect children from drift, which can cause acute poisonings as well as cancer, long-term reproductive and developmental disorders, and other chronic adverse effects.

There are many documented cases of the harmful effects of agricultural pesticide drift on children. Among the many examples, one new study shows that children exposed to agricultural pesticides applied near their home have up to twice the risk of developing the most common form of childhood leukemia. Also, recent air monitoring conducted near an elementary school in Florida detected pesticides in every sample, sometimes at levels that may pose serious health risks to young children.

“We traditionally think of farms as healthy places,” said MomsRising.org President Joan Blades. “But children and families across the country are being poisoned by pesticides that travel from the fields into their houses and bedrooms, causing serious and long-lasting damage to their health. We already have standards barring the use of such pesticides for homes and lawns to protect children. But all children deserve such protection. You shouldn’t have to live in the suburbs to be safe from deadly pesticides.”

According to Beyond Pesticides’ report Getting the Drift on Chemical Trespass: Pesticide drift hits homes, schools and other sensitive sites throughout communities, pesticides can volatilize into the gaseous state and be transported over long distances fairly rapidly through wind and rain. Documented exposure patterns resulting from drift, causes particular concerns for children and other sensitive population groups, as adverse health effects, such as nausea, dizziness, respiratory problems, headaches, rashes, and mental disorientation, may appear even when a pesticide is applied according to label directions.

“In farming communities throughout the country, children have been abandoned by federal pesticide protections,” said Earthjustice attorney Janette Brimmer. “We’re asking EPA to finish the job it started so children who live, go to school, or play near farms and orchards are kept safe from poisonous pesticides.”

EPA has acknowledged the risk of pesticide drift, but still chose to protect urban and suburban areas, while leaving the children of farm workers and other rural kids vulnerable. The petition asks EPA to take immediate steps to comply with its legal duty to protect all children from pesticide drift.

“It’s time the EPA put an end to this double-standard for farm workers. EPA’s policies must protect farm workers and their children from unnecessary poisoning,” said Farmworker Justice attorney Virginia Ruiz.

A study by the University of Nebraska Cooperative Extension “Reducing Pesticide Drift,†estimates that up to 40% of a pesticide applied in aerial spraying is lost to drift. (Klein, B. 2002) Another study, Amounts of pesticides reaching target pests: Environmental impacts and ethics found that an estimated less than 0.1% of an insecticide actually reached target pests. Therefore, more than 99% of the applied pesticide is released and left to impact the surrounding environment.

“It’s outrageous that our own government isn’t protecting our children from being poisoned by pesticides drifting on their homes and schools,” said Julie Montgomery, Project Director and Attorney with California Rural Legal Assistance Foundation. “How can parents possibly protect their children from these dangers on their own?”

The petition focuses on the toxic drift of organophosphates, particularly: endosulfan, oxydemeton-methyl, ethoprop, methyl parathion, and chlorpyrifos. Short term exposures of chlorypyrifos has been likened to a chemically-induced flu with even short term exposure: chest tightness, blurred vision, headaches, coughing and wheezing, weakness, nausea and vomiting, coma, seizures, and even death. Studies have also shown that young children are potentially susceptible to certain organophosphates for a longer period of time than previously thought.

“Children are especially vulnerable to pesticide exposures both because their smaller bodies cannot break down toxins as well as adults, and because their developmental processes are prone to being derailed — even by very low-level exposure,” explains Dr. Margaret Reeves, Senior Scientist for Pesticide Action Network. “The particular pesticides we’re finding in our drift catching and biomonitoring results are some of the worst: chlorpyrifos, diazinon, endosulfan…these are associated with serious short- and long-term health effects. They are also entirely unnecessary.”

For more information on how pesticides impact children’s health, visit Beyond Pesticides’ Children and Schools page.

Source: Earth Justice Press Release

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15
Oct

Common Herbicides Block Important Nutrient Sensor in Humans

(Beyond Pesticides, October 15, 2009) New research from the Monell Center and the Mount Sinai School of Medicine reveals that phenoxy herbicides block T1R3, a nutrient-sensing taste receptor found in the pancreas and intestines of humans. These commonly used herbicides were not previously known to act on the T1R3 receptor, nor has any animal testing revealed any indication of this. The specific effects are unique to humans; thus, phenoxy herbicides may have adverse metabolic effects in humans that would have gone undetected in studies on rodents.

The T1R3 receptor is a critical component of both the sweet taste receptor and the umami (amino acid) taste receptor. First identified on the tongue, emerging evidence indicates that T1R3 and related taste receptors also are located on hormone-producing cells in the intestine and pancreas. These internal taste receptors detect nutrients in the gut and trigger the release of hormones involved in the regulation of glucose homeostasis and energy metabolism.

“Compounds that either activate or block T1R3 receptors could have significant metabolic effects, potentially influencing diseases such as obesity, type II diabetes and metabolic syndrome,†noted Monell geneticist and study leader Bedrich Mosinger, M.D., Ph.D.

The study, co-authored by Emeline Maillet from the Department of Neuroscience at Mount Sinai School of Medicine and co-author Robert Margolskee of Monell, and published online in the Journal of Medicinal Chemistry, tests the ability of two classes of chemical compounds to block the T1R3 receptor. Lipid lowering fibrate drugs used to treat high blood cholesterol; and phenoxy herbicides used in agriculture and in lawn care to control broad-leaf weeds. These two chemical compounds were selected based on their strong structural similarity to lactisole, a sweet taste inhibitor that exerts its taste effects by blocking T1R3.

Study researchers used an in vitro preparation to find that both classes of compounds, -phenoxy herbicides, along with fibrates, potently blocked activation of the human sweet taste receptor, acting at micromolar concentrations to inhibit binding of sugars to the T1R3 component of the receptor.

Additional testing revealed that the inhibitory effect of both fibrates and phenoxy herbicides on the T1R3 receptor is specific to humans. That is, the ability of these compounds to block the receptor did not generalize across species to the rodent form of the receptor.

Popular phenoxy herbicides include MCPA, Mecoprop (MCPB), and 2,4-D, one of the most extensively used herbicides in the world. According to the U.S. Environmental Protection Agency’s (EPA) Pesticide Industry and Usage Report, 2,4-D is the most commonly used pesticide in the nonagricultural sector and the fifth most commonly used pesticide in the nonagricultural sector in the U.S. It is a selective herbicide, used to kill broadleaf weeds with little to harm to grass crops. It is a plant growth regulator and mimics the natural plant growth hormone.

Phenoxy herbicides have been linked to a host of adverse human impacts, as well as water contamination and toxicity to aquatic organisms. Previous studies have shown that exposure to MCPA can more than double one’s risk of developing non-Hodgkin lymphoma (NHL). Another study published last month found that occupational 2,4-D exposure almost triples the risk of Parkinson’s disease compared to those reporting no exposure to the agent.

It is important to note that the implications of this study, as suggested by Dr. Mosinger, highlight the significance of testing chemicals intended for human use on human tissues, because these tests did not have the same results on lab rats. “The metabolic consequences of short- and long-term exposures of humans to phenoxy-herbicides are unknown. This is because most safety tests were done using animals, which have T1R3 receptors that are insensitive to these compounds,†he said.

Dr. Mosinger points out that little is known about how T1R3 blockade affects hormone levels and metabolism. “Given the number of compounds used in agriculture, medicine and the food industry that may affect human T1R3 and related receptors, more work is needed to identify the health-related effects of exposure to these compounds,†he said.

These highly toxic chemicals can be replaced by cost-competitive and effective management practices widely used in organic agriculture and lawn care. For information on ways to manage weeds without the use of phenoxy-herbicides, please refer to Beyond Pesticides’ Lawns and Landscapes page.

Source: Science Daily

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14
Oct

Conditions Affect Release of Nanosilver from Treated Products

(Beyond Pesticides, October 14, 2009) New research by scientists at the Swiss Federal Laboratories for Materials Testing and Research provides a first look at the behavior of nanosilver textiles under real-world washing conditions. This work builds on earlier studies conducted in water which show that nanosilver leaches from fabrics and textiles during washing to enter the environment.

The study, “The Behavior of Silver Nanotextiles during Washing†published in Environmental Science and Technology, found that the total amount and form of silver (dissolved or particulate) that leaches during washing varies significantly depending on the product and the conditions. The goal was to determine the amount and the form of silver released during washing from nine fabrics with different ways of silver incorporation into or onto the fibers. The effect of pH, surfactants, and oxidizing agents was also evaluated. In the washing machine the majority of the nanosilver (at least 50% but mostly >75%) was released in the size fraction more than 450 nm, indicating the dominant role of mechanical stress. The researchers found that under typical washing conditions (pH 10—11, with high levels of surfactants), dissolved concentrations of silver were 10 times lower than at pH 7. However, when bleaching agents such as hydrogen peroxide or peracetic acid (a mixture of acetic acid and hydrogen peroxide) were added, the dissolution of nanosilver particles was greatly accelerated.

The results do not contradict the previous Arizona State study, which found that socks impregnated with nanosilver release these particles when washed. This new study goes one step further to show that washing conditions matter in the leaching of silver nanomaterials from fabric. The study “gives us a much better idea of how silver might be released into the environment from the new wave of silver-nanoparticle-containing fabrics,†says Andrew D. Maynard, chief science adviser at the nonprofit Project on Emerging Nanotechnologies.

Nanosilver has been touted for its antibacterial properties and is used in many products such as sporting goods, band-aids, clothing, baby and infant products, and food and food packaging. However, very little is known about where these particles end up when such products are put to use. Nanosilver that leaches out of fabrics is released into wastewater treatment systems and into nearby aquatic environments. The environmental risks are not clear however. Many particles may aggregate or associate with other ions or materials in the environment and deposit into sediments and soils. Some however, can remain in surface waters, where they can be absorbed and/or ingested by aquatic organisms. Microbial populations especially those in wastewater treatment plants (WWTPs) are vulnerable to silver nanoparticles contamination.

Many consider silver to be more toxic than other metals when in nanoscale form and that these particles have a different toxicity mechanism compared to dissolved silver. Scientists have concluded that nanoparticles can pass easily into cells and affect cellular function, depending on their shape and size. Preliminary research with laboratory rats has found that silver nanoparticles can traverse into the brain, and can induce neuronal degeneration and necrosis (death of cells or tissue) by accumulating in the brain over a long period of time.

For more information on nanosilver, visit the Nanosilver section at our Antibacterial Program Page.

Source: Chemical & Engineering News

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13
Oct

Biomonitoring Study Detects Toxic Chemicals in Health Care Professionals

(Beyond Pesticides, October 13, 2009) In a first ever investigation of toxic chemicals found in the bodies of doctors and nurses, Physicians for Social Responsibility (PSR) in partnership with American Nurses Association (ANA) and Health Care Without Harm (HCWH) released the Hazardous Chemicals In Health Care report on October 8th. The inquiry found that all of the 20 participants had toxic chemicals associated with health care in their bodies. Each participant had at least 24 individual chemicals present, four of which are on the recently released US Environmental Protection Agency (EPA) list of priority chemicals for regulation. These chemicals are all associated with chronic illness and physical disorders.

The Hazardous Chemicals in Health Care report offers preliminary indicators of what the broader health care community may be experiencing. The project tested for 62 distinct chemicals in six categories: bisphenol A, mercury, perflourinated compounds, phthalates, polybrominated diphenyl ethers, and triclosan. The chemicals tested in the investigation are used in products common to the health care setting, from baby bottles, hand sanitizer, and medical gauges, to industrial paints, IV bags and tubes and stain-resistant clothing. Twelve doctors and eight nurses, two in each of 10 states were tested for the presence of six major chemical types used in the health care setting that are associated with health problems and are pervasive in our environment.

Study participant George Lundgren, M.D., a family practice physician from Minneapolis Minnesota said upon learning his results “When you do find out some of the specific unnatural chemicals in your body it is hard to deny, minimize, rationalize or justify their presence. It is disturbing to know the only body I have is permanently contaminated.â€

The Centers for Disease Control (CDC) National Biomonitoring Project has found that synthetic chemicals linked to health problems are present in every American. Overall, PSR’s test results were consistent with the findings by the CDC, with the exception of a specific type of toxic chemical, dimethyl phthalate, which was found at levels above the CDC’s 95th percentile. Future biomonitoring may illuminate a work source of exposure to dimethyl phthalate, which is used in hair spray and other personal care items, rocket fuel and more. Dimethyl phthalate was also registered for use by the US EPA as an insect repellent, but the 32 different insecticide products containing this chemical, often along with DEET, were cancelled back in the late 1980s and early 1990s.

According to the report, 15 of the 20 study participants had triclosan in their bodies, mirroring CDC’s finding that 74.6% of 2003-2004 samples contained triclosan. PSR’s new biomonitoring study also found three times more triclosan in participants urine than in CDC’s study, although the study’s maximum was below CDC’s 95th percentile.

Other findings include:
â€Â¢ Eighteen of the same chemicals were detected in every single participant;
â€Â¢ All 20 participants had at least five of the six major types of chemicals tested;
â€Â¢ Thirteen participants tested positive for all six of these major chemical types; and,
â€Â¢ All participants had bisphenol A, phthalates, PBDEs and PFCs, priority chemicals for regulation by the EPA and associated with chronic illness such as cancer and endocrine malfunction.

“Simply put, we are being â€Ëœpolluted’ by exposure to chemicals used in health care. This study demonstrates the urgent need to find safer alternatives to toxic chemicals whenever possible; to demand adequate information on the health effects of chemicals; and to require manufacturers to fully disclose the potential risks of their products and their components, for the safety of both health care professionals and the communities we serve,†added ANA President Rebecca M. Patton, MSN, RN, CNOR.

“Stronger laws are necessary to keep us safe from toxic chemicals. In 33 years, the EPA has tested for safety only 200 and banned only five of the more than 80,000 chemicals in commerce. We need to do better to protect public health,†says Charlotte Brody, RN, Health Care Without Harm Board Member, registered nurse, and National Field Director for Safer Chemicals, Healthy Families.

Regulated by both the FDA and US EPA, triclosan is an antibacterial used in hundreds of common consumer products such as soaps, cosmetics, deodorants, toys, and even clothing. Such widespread use in everyday consumer products can contribute to the rise of resistant bacteria, lessening their effectiveness, and they can affect the environment in runoff and wastewater. A U.S Geological Survey (USGS) study found that triclosan is one of the most detected chemicals in U.S. waterways and at some of the highest concentrations, because it is so frequently used in households and washed down the drains.

Scientific studies indicate that widespread use of triclosan causes a number of serious health and environmental problems. Among these issues is the resistance to antibiotic medications and bacterial cleansers, a problem for all people, but especially vulnerable populations such as infants and the elderly. Triclosan is also a known endocrine disruptor and has been shown to affect male and female reproductive hormones, which could potentially increase risk for breast cancer. A recent study found that triclosan alters thyroid function in male rats. Other studies have found that due to its extensive use in consumer goods, triclosan and its metabolites are present in fish, human milk, serum, urine, and foods. Further, the pesticide can also interact with other chemicals to form dioxin and chloroform, thereby exposing consumers to even more dangerous chemicals.

Washing with soap and water is essential. An FDA panel concluded that triclosan soaps are no more effective than washing with soap and water. For more information, including tips on how to get triclosan out of your school, office or community, or visit Beyond Pesticides’ Triclosan program page.

Although the new biomonitoring study did not look at pesticides, these toxic chemicals are also present in people’s bodies and are commonly used in hospitals and health care facilities. For information on pesticide use and pest management in the health care sector and the conversion to nonchemical practices, see Beyond Pesticides’ Healthy Hospitals program page and the collaborative report by Beyond Pesticides and Health Care Without Harm Healthy Hospitals: Controlling Pests Without Harmful Pesticides and the most recent report, Taking Toxics Out of Maryland’s Health Care Sector.

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09
Oct

Australian Researchers Find Potential in Fungal Biopesticides

(Beyond Pesticides, October 9, 2009) An Australian Government study has shown that lice on sheep may be controlled by fungal biopesticides. Scientists from Queensland Primary Industries and Fisheries (QPIF) in Queensland, Australia have achieved promising results using a naturally occurring fungus called Metarhizium isolated from Queensland soil as an insecticide.

“When the fungal spores are applied to the sheep, they stick to the surface of lice as they move around in the fleece,†explains QPIF Senior Scientist Diana Leemon, PhD. “The lice also consume spores as they feed on wool grease and the spores germinate inside the insect, killing it.â€

Tim Mulherin, Minister for Primary Industries, Fisheries and Rural and Regional Queensland, stated, “Livestock industries, including sheep, are extremely important to our economy. Parasites such as sheep lice damage wool and reduce yields, leading to significant losses for the producer. Lice cost the Australian wool industry $123 million annually through lost production and control costs.â€

QPIF and Australian Wool Innovation Limited (AWI) have signed an agreement with commercial partner Becker Underwood Australia to develop the biopesticide to help the lice problem. AWI CEO Brenda McGahan said the research was timely as sheep lice are building resistance to some current treatments. “Producers are reporting sheep lice are becoming a major problem, particularly following a recent ban on the use of the effective insecticide diazinon in a wet dip.â€

Fungal biopesticides have shown potential as insecticides of other bugs as well. Recently, researches worked with fungus as an insecticide for crickets and grasshoppers. The research team, led by USU insect pathologist Donald Roberts, PhD, is analyzing 10,000 soil samples gathered by the U.S. Department of Agriculture (USDA) in 17 states. After isolating the various fungi, each is grown in the lab and tested individually.

Some fungi are more effective than others as pesticides. Paul Stamets, a mushroom expert who spoke at the 2006 Beyond Pesticides National Pesticide Forum in Washington, DC on how fungus can play a part in insect control, has provided much research to the field of fungal pesticides, providing invaluable information on breeding fungus and fungus’ pesticidal usages. The green mold fungus Metarhizium anisopliae seems to be one effective fungal pesticide during certain phases of its life. One problem is that insects are sensitive to the spores and avoid them, and soldier insects guarding nests sense and intercept most spore-contaminated foragers to prevent them from entering and infecting the colony. Strains of the fungus produce chemical attractants in the mycelial state, the stage of the life cycle when a fuzzy mat of mycelium protrudes from a dead carpenter ant, making the mycelium an effective biopesticide.

Fungi found in soil are a less toxic solution to certain insect problems. Beneficial fungus pathogens, Beauveria spp., is a fungus that is used as a pesticide for controlling many kinds of insects. Many strains of this fungus are found worldwide in the soil. They control insects by growing on them, secreting enzymes that weaken the insect’s outer coat, and then getting inside the insect and continuing to grow, eventually killing the infected pest. Available EPA information indicates that use of Beauveria spp. as a pesticide is not expected to adversely affect people or the environment and tests show that the fungus is not toxic to mammals, birds or plants. There is a potential for pesticide products containing the fungus to harm bees, so the products must not be applied near beehives or where bees are actively hunting for food.

As the demand for organic products (including raw textile materials such as cotton and wool) grows, producers are looking for organic pest control options. As Richard Waterworth, Director of Becker Underwood Australia says, “Given the increasing demand for low residue and organic wool, we believe this form of lice management will become mainstream.†Many consumers now want to buy organic, chemical free materials; not just food. With advancements of this sort, the accessibility of organic products will increase.

Mr. Stamets and his colleagues have been working with fungi that feed on insects, and he has figured out a way to grow fungi that delay their spore formation and actually attract the insect to the fungus, thus breaking through an obstacle in using fungi to protect homes from carpenter ants and termites. However, in doing so, he says his philosophy “is not to wage war against the insect kingdom but to enlist fungal allies for the intelligent, natural, and localized control of targeted insectsâ€Â¦ We seek balance, not extinction.†Beyond Pesticides offers a video of Mr. Stamets’ speech and the article, “Fungi to the Rescue: Biopesticide derived from mold has promise as a greener method for eradicating unwanted insects,†in the Winter 2007 issue of Pesticides and You.

Source: Media Newswire

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08
Oct

EPA Announces New Scientific Evaluation of Atrazine

(Beyond Pesticides, October 8, 2009) The U.S. Environmental Protection Agency (EPA) announced that it will launch a comprehensive new evaluation of the pesticide atrazine to determine its effects on humans this fall. At the end of this process, the agency will decide whether to revise its current risk assessment of the pesticide and whether new restrictions are necessary to better protect public health.

This announcement follows recent scrutiny and findings that the current EPA regulation of atrazine in water is inadequate. In August this year, the Natural Resources Defense Council (NRDC) published a report, Poisoning the Well which found that the commonly used herbicide atrazine can spike at extremely high levels which go undetected by regular monitoring. Concurrently, The New York Times published an investigative piece based on the NRDC findings and confirmed that the public is not informed when reports of these spikes of atrazine in drinking water occur.

One of the most widely used agricultural pesticides in the U.S., atrazine can currently legally be applied before and after planting to control broadleaf and grassy weeds. Its increased use to manicure home lawns and gardens has become a serious environmental concern as runoff has had severe health and environmental consequences.

Even at low levels that are considered “safe†by EPA standards, atrazine is known to harm fish, and has been associated with reproductive and developmental effects as well as endocrine disruption. Research by UC Berkeley professor, Tyrone Hayes, Ph.D., demonstrates that exposure to doses of atrazine as small as 0.1 parts per billion, turns tadpoles into hermaphrodites – creatures with both male and female sexual characteristics.

As the most commonly detected pesticide in rivers, streams and wells, an estimated 76.4 million pounds of atrazine is applied in the U.S. annually. It has a tendency to persist in soils and move with water, making it a common water contaminant. Research found that intersex frogs are more common in suburban areas than agricultural areas. Another study suggests it as a possible cause for male infertility.

According to the EPA, agency staff will evaluate the pesticide’s potential cancer and non-cancer effects on humans. Included in this new evaluation will be the most recent studies on atrazine and its potential association with birth defects, low birth weight, and premature births.

“One of Administrator Jackson’s top priorities is to improve the way EPA manages and assesses the risk of chemicals, including pesticides, and as part of that effort, we are taking a hard look at the decision made by the previous administration on atrazine,†said Steve Owens, EPA’s Assistant Administrator for Prevention, Pesticides and Toxic Substances. “Our examination of atrazine will be based on transparency and sound science, including independent scientific peer review, and will help determine whether a change in EPA’s regulatory position on this pesticide is appropriate.â€

During the new evaluation, EPA will consider the potential for atrazine cancer and non-cancer effects, and will include data generated since 2003 from laboratory and population studies. To be certain that the best science possible is used in its atrazine human health risk assessment and ensure transparency, EPA will seek advice from the Scientific Advisory Panel (SAP) established under the Federal Insecticide, Fungicide and Rodenticide Act.

EPA will engage the SAP to evaluate the human health effects of atrazine over the coming year. Below is the timeline:

â€Â¢ November 2009: EPA will present SAP its plan for the new atrazine evaluation.
â€Â¢ February 2010: EPA will present and seek scientific peer review of its proposed plan for incorporating population studies into the atrazine risk assessment.
â€Â¢ April 2010: EPA will present and seek peer review of its evaluation of atrazine non-cancer effects based on animal laboratory toxicology studies, selection of safety factors in the risk assessment, and the sampling design currently used to monitor drinking water in community water systems.
â€Â¢ September 2010: EPA will present and seek peer review of its evaluation of atrazine cancer and non-cancer effects based on animal toxicology studies and epidemiology studies. This review is intended to include the most recent results from the National Cancer Institute’s Agricultural Health Study, anticipated for publication in 2010.

At the conclusion of this process, EPA will ask the SAP to review atrazine’s potential effects on amphibians and aquatic ecosystems. The SAP meetings will be open to the public.
In addition to the scientific review of the effects of atrazine, EPA plans to meet with interested groups to explore better ways to inform the public more quickly about results of atrazine drinking water monitoring.

For more information on the chemical atrazine, please see our fact sheet on our pesticide gateway. Beyond Pesticides is working to halt the senseless use and exposure to lawn pesticides and herbicides, such as atrazine, that are so pervasively used in the U.S. Avoid using these pesticides by following organic and least-toxic management strategies for your lawn and gardens, such as composting, rain gardens, habitat protection, and natural predators. For more ideas, look at our Lawns and Landscape Page, Invasive Weed Management Page, or contact us at [email protected].

TAKE ACTION! (LOCAL): If you’re in the area, attend the informational meeting held on November 3, 2009 from 9am to 12pm at the EPA Conference Center, Lobby Level, One Potomac Yard (South Bld.), 2777 S. Crystal Dr., Arlington, VA 22202.

TAKE ACTIOION! (NATIONAL): Tell the EPA to revise the current risk assessment of atrazine and to impose greater restrictions. Comments can be submitted to the EPA in writing by October 23 2009, or orally by October 27 2009. Submit your comments identified by docket ID number EPA-HQ-OPP-2009-0759 to either: online at Federal eRulemaking Portal; by mail to Office of Pesticide Programs (OPP) Regulatory Public Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-011; or delivered to OPP Regulatory Public Docket (7502P), Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South Bld.), 2777 S. Crystal Dr., Arlington, VA. Special arrangements should be made for deliveries of boxed information. The Docket Facility telephone number is 703-305-5805.

Source: EPA Press Release

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07
Oct

EPA Announces Greater Public Participation In Pesticide Registrations

(Beyond Pesticides, October 7, 2009) The U.S. Environmental Protection Agency (EPA) is establishing a new transparent process that will allow the public to review and comment on risk assessments and proposed registration decisions for pesticides. This expanded process will apply to all new pesticide active ingredients and first food uses, first outdoor uses, and first residential uses. It is not clear at this writing whether the agency will at the same time release the underlying test data on potential adverse health effects that companies submit for product registration.

Starting October 1, 2009, the public will be able to review and comment on the risk assessments and proposed registration decisions for certain pesticide registration actions. Upon receiving a complete application for registration for a new pesticide active ingredient or a new use of an already registered active ingredient, EPA will publish a Federal Register Notice of Receipt, establish a case docket in regulations.gov, and open an initial 30-day public comment. Following the comment period, EPA will publish its decision and a response-to-comment document. Once the agency’s risk assessments and proposed decision for the registration application are added to the docket, EPA will open another 30-day public comment period. After the final comment period closes, EPA will publish its decision and response-to-comment document. By focusing public access on new pesticide ingredients and first food, outdoor, and residential uses, the public will have the opportunity to comment on all major new exposure patterns for pesticide registration.

“This new process will give the public greater opportunity to participate and understand decisions about new pesticides,†said Steve Owens, EPA Assistant Administrator for Prevention, Pesticides and Toxic Substances. “The Obama Administration’s emphasis on providing unparalleled transparency at EPA will increase credibility and strengthen the reputation of our pesticide registration program while improving the public dialogue surrounding controversial pesticide registration decisions.â€

The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) requires that before selling or distributing a pesticide in the United States, a person or company must obtain registration, or license, from EPA. Before registering a new pesticide or new use for a registered pesticide, EPA must first ensure that the pesticide, when used according to label directions, can be used with a reasonable certainty of no harm to human health and without posing unreasonable risks to the environment. However, EPA’s assessment process is plagued with many deficiencies that allow a certain amount of harm and a high degree of uncertainty. Many pesticides that go through this process are in fact harmful to human health and the environment.

This new level of public participation in the registration process will allow the public, for the first time, to access and comment on pesticide registration applications and assessments before a chemical or product is placed on the market. Stakeholders will now also get information sooner on reduced-risk pesticides being registered that can replace some of the older and often more toxic pesticides. EPA hopes that the user community and the public will benefit from a broader understanding of the risk assessment and risk management processes associated with pesticide registration.

Simultaneously, EPA announced that it was also moving forward with a plan to disclose the identities of all so-called “inert’ ingredients in pesticides, including those that are potentially hazardous. Beyond Pesticides believes this increased transparency will assist consumers and users of pesticides in making informed decisions and will better protect public health and the environment.

For more on EPA’s public participation process and pesticide regulation, visit EPA’s Regulation Pesticides. Also read Beyond Pesticide’s “What is a Pesticide?â€

Source: EPA News Release

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06
Oct

Be Smart Like Harvard – Have a Pesticide-Free, Organic Lawn

(Beyond Pesticides, October 6, 2009) What started as a one-acre pilot project and grew into a 16-acre test, is now going to be taking over the entire Harvard University campus grounds. Harvard has committed to managing its entire 80-acre campus with pesticide-free, natural, organic lawn and landscape management strategies, all the while saving tens of thousands of dollars a year.

According to the Harvard Yard Soils Restoration Project Summary Report, the pilot project was modeled after New York City’s Battery Park City Parks’ 37-acre organic landscape program that began back in 1989. The goal of the project was simply to improve soil health, develop knowledge base on how to run such programs as well as educate the campus community about the many benefits or organic lawn care.

For eight months, the one-acre test plot was extensively compared to a control plot of conventional management techniques. That one-acre underwent a process that included eliminating all toxic pesticides, testing for soil nutrients and organic material content, and adding compost teas to balance soil nutrients and reduce irrigation and nitrogen applications. The compost tea, a liquid biological amendment from the brewing vat located nearby, is made up of liquid humic acid and North Atlantic kelp as well as granular humate. In the tea are living organisms that will control pests and nourish the soil. In the spring, the turf area is core aerated, over-seeded and ½ inch layer of compost is added. A slow-release organic fertilizer is also added in late spring.

Root measurements, taken bi-weekly, were compared to the control plot. The results show that the organic plot lead to greater vitality of the turf and trees and greater soil nutrients and soil microorganism, improved root growth to five inches, and a reduced need for irrigation.

The success of the one-acre plot showing that halting synthetic toxic pesticide and fertilizer use and using only natural, organic approaches to reinvigorate soil health drew the attention of Harvard’s president, Drew Gilpin Faust, Ph.D. The one-acre blossomed to 16 acres last year and this past spring about 10 more acres were added. The pilot project and its expansion over the past months has demonstrated that the campus grounds grown organically are self sustaining, lush, and beautiful, despite heavy foot traffic. Now Harvard is calling for a phase-in of the entire campus over the next few years. Part of the campus-wide project success is in Harvard’s own composting facility, which is currently being expanded.

The September 24, 2009 New York Times article, “The Grass Is Greener at Harvard,†states that managing the grounds with an organic management approach saves the school two million gallons of water a year as irrigation needs have been reduced by 30 percent. It cost Harvard $35,000 a year to get rid of “landscape waste†from its campus grounds. Now that cost is gone, now the school keeps all grass clippings, leaves and branches it can for composting and making compost teas, which in turn saves the university an additional $10,000 from having to purchase fertilizers elsewhere.

As a kind of “soil lab,†the brainchild of Harvard’s Graduate School of Design (GSD) Professor of Landscape Architecture Michael Van Valkenburgh, these pristine plots are managed by GSD Loeb Fellow Eric T. Fleisher and carefully tended by Wayne Carbone, Manager of Harvard’s Landscape Services, and his crew.

“Unlike conventional soil improvement, we are taking a very different approach,†explains Mr. Fleisher. “Instead of applying a topical, chemical fertilizer, our biological approach is to create a chemical change by infusing the soil with biological organisms from the bottom up.â€

It all started with a conversation Mr. Van Valkenburgh had with Harvard University President Drew Faust as they walked through the Yard. Asked what one thing he would do to protect the Yard, Mr. Van Valkenburgh recommended soil remediation, pointing to the loss of trees in the Yard due to soil degradation and compaction. Two rows of tulip trees that once graced the area outside Massachusetts Hall died some years ago, and others have also taken the count only 12 years after they were planted due to soil degradation around the root systems. With that, a pilot study was launched.

“Michael has been working for many years on correcting the plant palette and planting conditions at Harvard Yard,†said Mr. Fleisher. “I have been working on building a program at Battery Park City for the past 19 years focusing on managing public space through completely organic means, my main focus being on soil. One of my goals as a Loeb Fellow was to prove the transferability of my program at Battery Park City to another organization.â€

Unlike creating a new lawn from scratch, the challenge of remediating established soil is that it cannot be aggressively removed. Instead, the lawn is fed periodically with an “organic tea†that promotes beneficial microbial activity in the soil and promotes growth.

“The lawn takes longer to green up,†said Mr. Fleisher, “but it’s more enduring and resilient with our properly executed organic approach.â€

He is often quoted as saying, “It’s not product-based. It’s knowledge-based.†In a Harvard Gazatte article he talks about the fact that “adding chemicals denies the biological, chemical, and structural complexity of soilsâ€Â¦ and that healthy plants begin with healthy soils.â€

You don’t have to go to Harvard to start an organic lawn program at home or in your community. Harvard has developed materials on starting your own organic landscaping program and a calendar of when to do what to your lawn.

The New York Times article also does a good job of explaining the how’s and why’s to managing lawns and landscapes organically.

For more information on being a part of the growing organic lawn care movement, see Beyond Pesticides Lawns and Landscapes program page. For assistance in proposing a policy to your school or city council (or its equivalent), contact Beyond Pesticides at [email protected] or 202-543-5450.

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05
Oct

Review Confirms Atrazine Harms Fish and Amphibians

(Beyond Pesticides, October 5, 2009) An analysis of more than 100 scientific studies conducted on atrazine, published in the online edition of Environmental Health Perspectives, demonstrates the toxicity of atrazine to aquatic animals. Biologists at the University of Southern Florida (USF) have found evidence that atrazine harms fish and frogs. Atrazine is disruptive to the development and behavior of aquatic animals, and negatively effects their immune, hormone, and reproductive systems, according to the studies done by USF assistant professor Jason R. Rohr and postdoctoral fellow Krista A. McCoy. Atrazine is commonly used on lawns, golf courses, and sugarcane fields in Florida, and has recently been the topic of much controversy.

While atrazine typically does not kill amphibians and freshwater fish, the USF report says it did:
â€Â¢ Reduce the size of amphibians at or near metamorphosis in 19 of 19 studies.
â€Â¢ Make amphibians and fish more active in 12 of 14 studies but reduced behaviors used to evade predators in six of seven studies.
â€Â¢ Alter at least one aspect of male frogs’ reproductive development in eight of 10 studies.
â€Â¢ Reduce the functioning of animals’ immune systems and often put them at risk of infection.

Atrazine, a common herbicide used in agriculture and on lawns, is already linked to sexual abnormalities in fish. The condition of intersex fish, male fish producing eggs, was most commonly found in smallmouth and largemouth bass. One third of male smallmouth bass and one fifth of the male largemouth bass were intersex. This phenomenon has been linked to atrazine and other chemicals.

Atrazine has been linked to sexual abnormalities in frogs as well as fish. A 2002 study found that when dosed with >.1 part per billion (ppb) of atrazine in water, male Leopard Frogs developed dramatic female sexual characteristics, including retarded gonadal development (gonadal dysgenesis) and testicular oogenesis (hermaphroditism). Joseph Kiesecker of Pennsylvania State University found that exposure to atrazine and other pesticides severely weaken the immune system, making frogs much more susceptible to parasitic infection and deformities.

Richard Levey, a biologist with the Vermont Agency of Natural Resources, said two common farm chemicals, atrazine and metolachlor, had been found in trace amounts in water from wetlands where deformed frogs had been found. He told the AP that the concentrations were far below those thought to have any effect on aquatic life.

Research by Tyrone Hayes, Ph.D., a professor of Integrative Biology at the University of California, Berkeley, has found pesticides, including atrazine, to cause serious deformities at levels well below EPA drinking water standards. Dr. Hayes has shown that exposure to doses of atrazine as small as 0.1 parts per billion – a level permitted in drinking water by EPA – turns tadpoles into hermaphrodites – creatures with both male and female sexual characteristics. Dr. Hayes’ team found that up to 20 percent of frogs exposed during their early development produced multiple sex organs or had both male and female organs. Many also had small, feminized larynxes.

Recent reports find EPA’s regulations of atrazine in water to be insufficient. The analysis by the Natural Resources Defense Council (NRDC), Poisoning the Well, discovered that in the 139 municipal water systems from which EPA collected data on a biweekly basis in 2003 and 2004, atrazine is found 90% of the time. 54 of these water systems have at least one spike above 3 parts per billion (the supposed acceptable level for human consumption).

Furthermore, studies from 2007, done by researchers at the Centers for Disease Control (CDC), have determined that previous studies that assessed population-based exposure to atrazine were significantly and systematically underestimated. With the growing proof of the negative effects of atrazine, levels of exposure need to be properly monitored and accounted for. Ideally, public health advocates have argued that exposure to atrazine should be eliminated entirely through its cancellation.

This comprehensive review demonstrates the urgent need for EPA to cancel atrazine uses. Atrazine was banned in Europe in 2004, and with good reason. Atrazine is an endocrine disruptor, and can lead to neuropathy and cancer. Atrazine stays in the environment for long periods of time; it can stay in soil for longer than one year under dry or cold conditions. There is no need to continue with the use of atrazine, especially with so many alternatives for pest management. For examples, see our Lawns and Landscapes page and our Organic Food page.

For further information on this issue, please see our Threatened Waters page.

Source: USF News

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02
Oct

EPA Seeks to Disclose Hazardous Pesticide Inert Ingredients

(Beyond Pesticides, October 2, 2009) The Environmental Protection Agency (EPA) announced that it is moving forward with a plan to disclose the identities of all so-called “inert’ ingredients in pesticides, including those that are potentially hazardous. EPA believes this increased transparency will assist consumers and users of pesticides in making informed decisions and will better protect public health and the environment. Pesticide manufacturers typically disclose their inert ingredients only to EPA.

On September 30, 2009, EPA responded to two petitions, one by led by the Northwest Coalition for Alternatives to Pesticides and joined by Beyond Pesticides and 20 other organizations, and a second by certain State Attorneys General, that identified over 350 inert pesticide ingredients as hazardous. The petitioners asked EPA to require these inert ingredients be identified on the labels of products that include them in their formulations.

In its response to petitioners, the agency said, “EPA agrees with the petitioners that the public should have a means to learn the identities of hazardous inert ingredients in pesticide product formulations. The agency believes that increased transparency could lead to better informed decision making and better informed pesticide use.†It continues, “EPA will also be discussing ideas to increase disclosure of all inert ingredients identities to an even greater degree than requested by the petitions.â€

The agency anticipates publishing its proposed rulemaking in the Federal Register within the next few months. In it, EPA will discuss ideas for greater disclosure of inert ingredient identities, including inerts associated with various hazards, as well as inerts in general. EPA believes one way of discouraging the use of the more hazardous inert ingredients in pesticide formulations is by making their identities public. In addition to pursuing regulatory action for inert disclosure, EPA is considering encouraging voluntary initiatives to achieve this broader disclosure.

Currently, under the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), pesticide manufacturers are only required to list the active ingredients in a pesticide, leaving consumers and applicators unaware of the possible toxics present in the inert ingredients of pesticide products they are using, unless the EPA administrator determines that the chemical poses a public health threat. Pesticide manufacturers argue they cannot release information on inert ingredients because they are trade secrets, and if released, their products could be duplicated. Quite often inert ingredients constitute over 95% of the pesticide product. Inert ingredients are mixed into pesticides products as a carrier or sticking agent, and are often as toxic as the active ingredient.

Despite their name, these ingredients are neither chemically, biologically or toxicologically inert. In general, inert ingredients are minimally tested, however, many are known to state, federal and international agencies to be hazardous to human health. For example, the U.S. government lists creosols as a “Hazardous Waste†under Superfund regulations, yet allows these chemicals to be listed as inert ingredients in pesticide products. Creosols are known to produce skin and eye irritations, burns, inflammation, blindness, pneumonia, pancreatitis, central nervous system depression and kidney failure. The pesticide naphthalene is an inert ingredient in some products and listed as an active ingredient in others.

A 2009 study finds that an inert ingredient in the popular herbicide RoundUp, polyethoxylated tallowamine or POEA, is more deadly to human embryonic, placental and umbilical cord cells than the herbicide itself — a finding the researchers call “astonishing.†POEA is a surfactant, or detergent, derived from animal fat. It is added to Roundup and other herbicides to help them penetrate plants’ surfaces, making the weed killer more effective.

According a 2000 report produced by the New York State Attorney General, The Secret Ingredients in Pesticides: Reducing the Risk, 72 percent of pesticide products available to consumers contain over 95 percent inert ingredients; fewer than 10 percent of pesticide products list any inert ingredients on their labels; more than 200 chemicals used as inert ingredients are hazardous pollutants in federal environmental statutes governing air and water quality; and, of a 1995 list of inert ingredients, 394 chemicals were listed as active ingredients in other pesticide products.

For more information about pesticide ingredients, see “What Is a Pesticide?”

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01
Oct

Study Shows More Corn for Ethanol Production Hurts Water

(Beyond Pesticides, October 1, 2009) More pesticides and fertilizers used to grow conventional corn would find their way into nearby water sources if ethanol demands lead to planting more acres in corn, according to a Purdue University study. The study of Indiana water sources finds that fields practicing continuous-corn rotations have higher levels of nitrogen, fungicides and phosphorous than corn-soybean rotations.

While touted as a green energy source, most corn ethanol is made with genetically modified corn that is routinely sprayed with pesticides and chemical fertilizers. To makes matters worse, it’s usually planted year after year, rather than using crop rotation, a basic strategy to reduce pest pressure and soil erosion. Corn ethanol is also inefficient, producing only 1.34 joules of energy for each joule used in production (compared to 8 joules for sugarcane). Furthermore, the American Clean Energy and Security Act (House Climate Bill) sidetracks a proposed EPA regulation that requires U.S. ethanol makers responsible for greenhouse gas emissions from conversion of forests and grasslands overseas to cropland. Big Agribusiness is lobbying for a similar provision in the Senate version, the Clean Energy Jobs and American Power Act.

Results of the new study, “Water Quality Impacts of Corn Production to Meet Biofuel Demands,†by Indrajeet Chaubey, PhD, an associate professor of agricultural and biological engineering, and Bernard Engel, PhD, a professor and head of agricultural and biological engineering, were published in the online version of The Journal of Environmental Engineering. U.S. Department of Agriculture data has shown that corn acreage has increased with the demand for ethanol, with 93 million acres in 2007, an increase of 12.1 million acres that year.

“When you move from corn-soybean rotations to continuous corn, the sediment losses will be much greater,” Dr. Chaubey said. “Increased sediment losses allow more fungicide and phosphorous to get into the water because they move with sediment.”

Nitrogen and fungicides are more heavily used in corn crops than soybeans, increasing the amounts found in the soil of continuous-corn fields. Sediment losses become more prevalent because tilling is often required in continuous-corn fields, whereas corn-soybean rotations can more easily be no-till fields, Dr. Engel said.

“The common practice is there is a lot of tillage to put corn back on top of corn,” Dr. Engel said. “Any time we see changes in the landscape, there is a potential to see changes in water quality.”

Beyond Pesticides points out that pesticide runoff and soil loss can be best eliminated using an organic no-till system. Organic no-till farming is also an effective tool in combating climate change. Read more about the climate benefits of organic no-till farming.

Organic agriculture embodies an ecological approach to farming that does not rely on or permit toxic pesticides, chemical fertilizers, genetically modified organisms, antibiotics, sewage sludge, or irradiation. Instead of using these harmful products and practices, organic agriculture utilizes techniques such as cover cropping, crop rotation, and composting to produce healthy soil, prevent pest and disease problems, and grow healthy food and fiber.

Beyond Pesticides supports organic agriculture as effecting good land stewardship and a reduction in hazardous chemical exposures for workers on the farm. The pesticide reform movement, citing pesticide problems associated with chemical agriculture, from groundwater contamination and runoff to drift, views organic as the solution to a serious public health and environmental threat.

According to USDA, in 2009, 85% of corn planted in the U.S. was genetically modified. Cornell University researchers estimate that meeting the lifetime fuel requirements of just one year’s worth of U.S. population growth with straight ethanol (assuming each baby lived 70 years), would cost 52,000 tons of insecticides, 735,000 tons of herbicides, 93 million tons of fertilizer, and the loss of 2 inches of soil from the 12.3 billion acres on which the corn was grown. Growing food for fuel will almost certainly raise global food prices as well.

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