Author Archive
26
Sep
(Beyond Pesticides, September 26, 2011) On September 23, 2011, the Centers for Disease Control and Prevention (CDC) published a study in its Morbidity and Mortality Weekly Report linking pesticides sprayed in attempts to control bed bugs to poisoning incidents and death. Because bed bugs do not transmit disease and can be controlled without pesticides, this risk is completely unnecessary. The study, “Acute Illnesses Associated with Insecticides Used to Control Bed Bugs,” utilized data from California, Florida, Michigan, North Carolina, New York, Texas, and Washington. In those seven states, over 100 poisonings, including one fatality, were associated with bed bug-related insecticide use. The CDC researchers used data from states participating in the Sentinel Event Notification System for Occupational Risks (SENSOR)-Pesticides program and the New York City Department of Health and Mental Hygiene (NYC DOHMH). The authors defined “acute illness” associated with an insecticide used to control bed bugs as two or more acute adverse health effects resulting from exposure to an insecticide used for bed bug control. The study reports: A total of 111 illnesses associated with bed bug–related insecticide use were identified; although 90 (81%) were low severity, one fatality occurred. Pyrethroids, pyrethrins, or both were implicated in 99 (89%) […]
Posted in Bedbugs, Chemicals, Disease/Health Effects, Permethrin | No Comments »
23
Sep
(Beyond Pesticides, September 23, 2011) In two weeks, a diverse coalition of organizations, businesses and individuals will begin to march from the Historic Flatbush Food Co-op in Brooklyn, NY to the gates of the White House to ask the Obama Administration to support labeling of genetically modified organisms (GMOs). The GMO Right2Know March will feature daily events between New York and Washington, DC October 1-16 as hundreds of marchers are expected to walk part or all of the 313 miles to the White House. The route and details on daily events can be viewed here. “Pesticide companies develop genetically engineered food crops by combining DNA from plants, animals, bacteria and viruses, to contain or resist pesticide, which results in more pesticides sold and sprayed,” says Michael Hansen, Ph.D, chief scientist of Consumers Union. “Genetically engineered foods contain untested novel foreign compounds that can be detrimental to our health, just as they are to the environment and farmers’ livelihoods. American consumers deserve the choice whether they want to eat GMOs, just like their counterparts in Europe and Japan,” says Hansen who will join the Oct 1 NYC Right2Know March kick-off rally at Prospect Park at 11am to 1pm followed by marchers […]
Posted in Events, Genetic Engineering | No Comments »
22
Sep
(Beyond Pesticides, September 22, 2011) As part of his $3 trillion deficit-reduction plan, President Obama has proposed to increase pesticide and chemical registration fees and reinstate tolerance assessment fees in order to cover the costs of evaluating the chemicals’ health and environmental effects data. The U.S. Environmental Protection Agency (EPA) currently collects fees from companies seeking to register their pesticides or maintain existing registrations; however these fees do not cover the full cost of the review process. The White House fee collection proposal will save $740 million over 10 years. Under the reregistration program, pesticides that were registered prior to November 1, 1984 are evaluated to ensure that they continue to meet current regulatory standards. EPA began this effort under 1988 amendments to the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). The amendment also requires EPA to review all other registered pesticides on a 15-year cycle to ensure that registrations reflect current regulations. The reregistration of pesticides under FIFRA is a lengthy and ongoing process. Hundreds of pesticides currently registered and commonly used still lack a full assessment of their potential short and long-term effects on human health, particularly on children, and the environment. For example, EPA has failed to […]
Posted in National Politics, Pesticide Regulation | No Comments »
21
Sep
(Beyond Pesticides, September 21, 2011) An unregistered pesticide product, which was smuggled into the U.S. from overseas and contained an ingredient at a concentration of nearly 61 times greater than allowed by federal regulations, was one of 6,000 rat and cockroach poison products seized from shops and street vendors in and around New York’s Chinatown. The pesticides are particularly dangerous because their packaging and appearance could lead them to be mistaken for cookies or cough medicine. The U.S. Environmental Protection Agency (EPA), with several other federal and state agencies, including the New York State Department of Environmental Conservation (DEC), the New York Office of U.S. Immigrations and Customs Enforcement’s (ICE) Homeland Security Investigations (HIS), and the New York Office of the United States Postal Inspection Service (USPIS), on Monday announced federal criminal charges against two defendants, and state criminal charges against 10 defendants, for their respective roles in the illegal distribution and sale of unregistered and misbranded pesticides that were sold out of multiple locations in Manhattan. All pesticides pose unique risks to users and the environment at large since they are designed to kill living organisms; many have been linked to several chronic diseases including cancer. Learn more about […]
Posted in Brodificoum, Pesticide Regulation | No Comments »
20
Sep
(Beyond Pesticides, September 20, 2011) A study supported by the U.S. Army Medical Research and Materiel Command links pesticide exposure and other factors to Gulf War illness (also referred to as Gulf War Syndrome), an illness characterized by a wide range of acute and chronic symptoms experienced by veterans and civilians after the 1991 Gulf War. The study, “Complex Factors in the Etiology of Gulf War Illness: Wartime Exposures and Risk Factors in Veteran Subgroups,” is published in the September 19, 2011 online edition of Environmental Health Perspectives. The researchers designed the study to compare the characteristics of deployment and the risk factors experienced by veterans participating in various theaters of the Gulf War. Among personnel who were in Iraq or Kuwait, where all battles took place, four exposures were independently associated with GWI: taking PB pills, being within one mile of an exploding SCUD missile, using pesticides on the skin, and exposure to smoke from oil well fires. For veterans who remained in support areas, GWI was significantly associated only with personal pesticide use, with increased prevalence (OR=12.7, CI=2.6-61.5) in the relatively small subgroup who wore pesticide-treated uniforms, nearly all of whom also used skin pesticides. Among 64 pesticide […]
Posted in DEET, Gulf War Syndrome, Lindane, Permethrin | 1 Comment »
19
Sep
(Beyond Pesticides, September 19, 2011) Dubbing it the “most anti-environment House in history,” Rep. Henry Waxman (D-Calif.), ranking member on the House Energy and Commerce Committee, released a new searchable database last week listing a staggering 125 pieces of legislation that will reduce environmental protection. The bills, introduced and passed by the Republican-led U.S. House of Representatives, are aimed at limiting the authority of the U.S. Environmental Protection Agency (EPA) and other federal institutions tasked with upholding environmental laws set in place to protect human and environmental health. The database indicates that the legislation will undermine environmental laws, such as the Clean Air Act and Clean Water Act, and breaks down anti-environment bills in the 112th Congress into categories: clean energy, climate change, nuclear power, pipeline safety, pollution prevention, and public lands and coasts. This includes legislation limiting the regulatory authority of EPA by prohibiting it from regulating carbon emissions from power plants, votes to defund enforcement of the Clean Air Act and the Clean Water Act, and efforts to target federal agencies such as the Department of Interior and the Department of Energy. Recent attacks on environmental statutes, including attempts to strip the Clean Water Act of its power […]
Posted in National Politics, Pesticide Regulation, Take Action | No Comments »
16
Sep
(Beyond Pesticides, September 16, 2011) The U.S. Environmental Protection Agency (EPA) announced earlier this week that it is seeking public comments on a petition to ban atrazine, one of the most widely used herbicides in the United States. The call for comments was prompted by a petition submitted earlier this year by the group SAVE THE FROGS!, to ban the highly toxic chemical. The group, along its allies, delivered over 60,000 petition signatures and emails to EPA requesting an immediate ban. The group organized a rally at the steps of the EPA’s headquarters in Washington, DC back in April to raise awareness of the disappearance of amphibians and call for a federal ban on atrazine on the occasion of the international Save The Frogs Day. Amphibian populations worldwide have been declining at unprecedented rates, and nearly one-third of the world’s amphibian species are threatened with extinction. “Now that we have the EPA’s attention, we are a large step closer towards protecting our food supply, our drinking water and our wildlife from this known endocrine-disruptor,” says Kerry Kriger, PhD, founder and executive director of SAVE THE FROGS! “However, only a few percent of Americans have ever heard of atrazine, so raising […]
Posted in Announcements, Atrazine, Take Action | 2 Comments »
15
Sep
(Beyond Pesticides, September 15, 2011) Bowing to pressure from the chemical industry, the administration of President Barack Obama recently blocked a new and desperately needed U.S. Environmental Protection Agency (EPA) review of chemical health hazards which was developed under the agency’s Integrated Risk Information System (IRIS), according to Daniel Rosenberg of the Natural Resources Defense Council. In his blog, Mr. Rosenberg reported on September 13 that, “[T]he White House worked behind the scenes to stop EPA from issuing a hazard assessment of the cancer-causing chemical TCE [produced through the IRIS program] — and is working to effectively shut down the EPA’s program for assessing the hazards of chemicals — the basis for setting and updating health standards for drinking water, air quality, and clean-up of contaminated soil.” He notes that the move was obscured as it fell on the same day as the widely reported and controversial decision by the administration to withdraw a new EPA health standard for ozone smog. A chemical health review under IRIS apparently provided the groundwork for the establishment of a new health standard for the carcinogenic trichloroethylene (TCE), but the findings yielded no action. The existing standard for the substance was last updated more […]
Posted in National Politics, Pesticide Regulation | 4 Comments »
14
Sep
(Beyond Pesticides, September 14, 2011) A ruling last week by the European Court of Justice states that honey produced though cross-pollination with a genetically modified (GM) crop must be authorized as a GM product before being sold. The ruling means that the European Union (EU) will have to ban imported honey containing traces of pollen from GM crops that have not been approved for entry. Honey exports from the United States, Canada, Argentina or Brazil, countries with no regulations on the subject, will now be virtually impossible. In the ruling, which, in part, addressed the viability of GM pollen, delivered September 6, 2011, the Court observes, first, that the pollen in question may be classified as a GMO only if it is an ”˜organism’ that is a ”˜biological entity capable’ either of ”˜replication’ or of ”˜transferring genetic material.’ If the pollen in question has lost all specific and individual ability to reproduce, it should be determined whether that pollen is otherwise capable of ”˜transferring genetic material.’ taking due account of the scientific data available and considering all forms of scientifically-established transfer of genetic material. The court concludes, “Honey and food supplements containing pollen derived from a GMO are foodstuffs produced […]
Posted in Genetic Engineering, International, Pollinators | No Comments »
13
Sep
(Beyond Pesticides, September 13, 2011) A recent federal district court ruling is the latest in the series of setbacks against the U.S. Environmental Protection Agency (EPA’s) ability to enforce the Federal Insecticide, Fungicide & Rodenticide Act (FIFRA). The decision could affect at least five Stop Sale, Use or Removal Orders (SSUROs) issued to pesticide manufacturers since 2006. Even though the case hinged on a procedural issue, the ruling is another hindrance for the agency’s struggle to take action on registered pesticides that it believes are in violation of FIFRA without launching a formal cancellation process, a process that EPA has historically sought to avoid because it views it as lengthy and costly. While this case may hinge on the narrow need for rulemaking to delegate proper enforement authority under FIFRA, advocates have urged the agency’s broader use of its cancellation authority in an effort to bring the chemical industry in line with public health and environmental standards and sound science. With more rigorous use of its cancellation authority, pesticide manufacturers will have a difficult time with its challenges in the face of administrative findings by the agency. and over time ensure a higher degree of compliance. The case, American Vanguard […]
Posted in Pesticide Regulation | No Comments »
12
Sep
(Beyond Pesticides, September 12, 2011) While the fight continues over the use of toxic methyl iodide in California, new research is showing that the banned chemical methyl bromide, which methyl iodide was intended to replace, is continuing to be used in alarming amounts across the state due to a sizeable loophole in the regulations. While some may argue that this is simply a consequence of the controversy surrrounding methyl iodide, those concerned with human health and the environment point out that it is irresponsible and counterproductive to replace a devastating environmental contaminant with a highly toxic human carcinogen, especially when there are more responsible alternatives to both which can be employed. Most methyl bromide is used to fumigate, or sterilize, agricultural soils, especially those growing strawberries, though it is used for other crops as well. It is also used in high amounts as a structural fumigant to eradicate indoor pests. The most common applications of this kind are for residential termite treatments and for insects in food storage facilities. An investigation by New America Media has found that use of methyl bromide in California in 2009 was still at nearly 50% of levels from ten years prior, before the supposed […]
Posted in Agriculture, California, methyl bromide, methyl iodide | No Comments »
09
Sep
(Beyond Pesticides, September 9, 2011) Despite rising concerns over the side effects of herbicide tolerant, genetically engineered (GE) crops, Dow AgroSciences has recently asked for approval of a new GE soybean variety that will be the first ever to be simultaneously resistant to three different pesticides. The soybean variety, which the company is calling “Enlist,” is designed to compete with Monsanto’s line of “Roundup Ready” crops, which are engineered to be resistant to the company’s glyphosate formulation. The Enlist soybean will be resistant to glyphosate as well as glufosinate and 2,4-D. Antonio Galindez, CEO of Dow AgroSciences, told Reuters that the Enlist system is the company’s “most important project ever.” This is likely due to the company’s ambitious target of taking over Monsanto’s dominance of the GE market in American agriculture. Herbicide tolerant (HT) Roundup Ready crop varieties have become nearly ubiquitous in the corn, cotton, and soybean seed markets. Dow will market the product as a replacement for Roundup Ready soybeans. If farmers are finding that weeds in their fields are not responding to applications of Roundup, Dow will argue, then planting Enlist soybeans will allow them to spray a combination of chemicals in order to eradicate the resistant […]
Posted in 2,4-D, Agriculture, Chemicals, Dow Chemical, Genetic Engineering, glufosinate, Glyphosate | No Comments »
08
Sep
(Beyond Pesticides, September 8, 2011) The U.S. Environmental Protection Agency (EPA) issued a final cancellation order on August 8, 2011 for Rozol Prairie Dog Bait following a court order issued on July 27, 2011, which finds that EPA failed to consult with the U.S. Fish and Wildlife Service (FWS). As required by the court order, the blood-thinning pesticide Rozol (chlorophacinone) is no longer allowed for use in four states, including Montana, New Mexico, North Dakota and South Dakota, as of August 8, 2011 pending the completion of the endangered species consultation with the two agencies. Rozol is an anti-coagulant rodenticide in the chemical class of indandiones. It works by blocking vitamin K-dependent synthesis of the blood clotting substance prothrombin. Animals that ingest anti-coagulant rodenticides suffer from the following list of immediate toxic effects: nosebleeds, bleeding gums, blood in urine and feces; bruises due to ruptured blood vessels; and skin damage. Rozol may still be used in Colorado, Kansas, Nebraska, Oklahoma, Texas and Wyoming. However, Lipatech, the manufacturer of Rozol may not sell or distribute existing stocks in its possession and control unless they have been relabeled to eliminate the portion of the label authorizing use in the four canceled states. […]
Posted in Montana, New Mexico, North Dakota, South Dakota | No Comments »
07
Sep
(Beyond Pesticides, September 7, 2011) California’s approval of the dangerous and controversial agricultural chemical, methyl iodide, suffered serious questions with the release of new documents showing the fumigant’s registration process was flawed. The documents, which were made public as part of a lawsuit challenging the state’s approval of the chemical, show the state’s Department of Pesticide Regulation (DPR) cut and pasted calculations from different risk assessments in order to come up with a less stringent set of restrictions on the chemical’s use. Earlier this year, several environmental groups sued the State of California for approving the agricultural use of methyl iodide. Methyl iodide is known to cause miscarriages, thyroid dysfunction, and cancer, and is applied to crops like strawberries and peppers. It was approved by California state pesticide regulators in December as an alternative to methyl bromide, an ozone-depleting chemical being phased out under international treaty. Environmental advocacy groups and other opponents of methyl iodide use in the state have released documents detailing dissension in the ranks of DPR over the risk assessment of methyl iodide and its subsequent approval. Earthjustice, a nonprofit environmental law group, sued DPR in an attempt to reverse the state’s approval of the chemical. The […]
Posted in Agriculture, California, Litigation, methyl bromide, methyl iodide, Pesticide Regulation | No Comments »
06
Sep
(Beyond Pesticides, September 6, 2011) Scientists in France have discovered that honey bees are at a higher risk of dying from infection by Nosema ceranae (N. ceranae) when they are exposed to low doses of insecticides. The results, presented in the journal PLoS ONE, support the theory that combining more N. ceranae with high pesticide content in beehives could contribute to colony depopulation. The French study, “Exposure to Sublethal Doses of Fipronil and Thiacloprid Highly Increases Mortality of Honeybees Previously Infected by Nosema ceranae,” brought together researchers from the Laboratoire Microorganismes: Génome et Environnment and the Laboratoire de Toxicologie Environnment who utilized their respective skills in parasitology and toxicology to assess the effect of pathogen/toxin interactions on bee health. In the laboratory, the researchers chronically exposed newly emerged honey bees, some healthy and others infected with Nosema ceranae, to low doses of insecticides: fipronil and thiacloprid. They found that the infected bees died when they were chronically exposed to insecticides, even at sublethal doses, unlike the healthy bees. This combined effect on honeybee mortality was observed with daily exposure to extremely low doses (over 100 times less than the LD50 or dose needed to kill 50% of the sample population, […]
Posted in Fipronil, Pollinators | No Comments »
02
Sep
(Beyond Pesticides, September 2, 2011) The widely used herbicide glyphosate, the active ingredient in Roundup, has been detected in significant levels in rain and rivers in agricultural areas across the Mississippi River watershed, according to two new studies released this month by the U.S. Geological Survey (USGS). The studies’ results raise serious concerns about public exposure and potential environmental damages. Detailed results are available in “Occurrence and fate of the herbicide glyphosate and its degradate aminomethylphosphonic acid in the atmosphere,” published in Environmental Toxicology and Chemistry and in “Fate and transport of glyphosate and aminomethylphosphonic acid in surface waters of agricultural basins,” published online in Pest Management Science. Glyphosate is used in almost all agricultural and urban areas of the United States. The greatest glyphosate use is in the Mississippi River basin, where most applications are for weed control on genetically-modified corn, soybeans and cotton. Overall, agricultural use of glyphosate has increased from less than 11,000 tons in 1992 to more than 88,000 tons in 2007. The two studies conducted by USGS examine glyphosate content in air and water samples in the states of Iowa and Mississippi across two growing seasons. The results show that glyphosate is detected 60-100% of […]
Posted in Agriculture, Glyphosate, Water | No Comments »
01
Sep
(Beyond Pesticides, September 1, 2011) In an exclusive Beyond Pesticides’ interview in Mirebalais, Haiti (in the central plateau region of the country) on August 26, 2011 with the head of Haiti’s Mouvman Peyizan Papay [MPP] (Peasant Movement of Papay), a 200,000 member strong organization of small farmers, Chavannes Jean-Baptiste calls for support of food sovereignty in his earthquake-torn country and an end to efforts by Monsanto and the U.S. Agency for International Development (USAID) to advance chemical-intensive agriculture in Haiti. Mr. Chavannes and his organization led a protest of 10,000 peasant farmers in 2010 during which they burned Monsanto seed that was donated and being distributed by USAID’s Watershed Initiative for National Natural Environmental Resources (WINNER) Program. At the time the seeds were being distributed in 2010, Mr. Jean-Baptiste said Monsanto’s donation is an effort to shift farmer dependence to more expensive hybrid varieties from traditional seeds and will harm the island-nation’s agriculture. He called the donation a new earthquake. Haitian farmers and small growers traditionally save seed from season to season or buy the seed they desire from traditional seed markets, and, as he points out, have been doing this for 200 years. Monsanto says that it donated “more […]
Posted in Agriculture, International, Monsanto | No Comments »
31
Aug
(Beyond Pesticides, August 31, 2011) Widely grown corn plants that Monsanto Co. genetically modified to thwart a voracious bug are falling prey to that very pest in Iowa cornfields, the first time a major Midwest scourge has developed resistance to a genetically modified crop. The discovery raises concerns that the biotech crops are spawning “superbugs” and calls into question EPA’s allowance of so-called plant incorporated protectants (PIPs). Fields planted in Monsanto’s Bt corn in some areas of the Midwest are showing damage from the corn rootworm””the very species targeted by Monsanto’s engineered trait. Iowa State University entomologist Aaron Gassmann, PhD has discovered that western corn rootworms in four Iowa fields have evolved and can resist the pesticide built into Monsanto’s genetically altered corn seeds. The scientist said the cases were isolated, but he did not know how widespread the problem could become. Farmers in Illinois are also seeing severe rootworm damage in fields planted in Monsanto’s Bt corn. In 2010, Monsanto acknowledged that in industrial-agriculture regions of India, where Monsanto’s Bt cotton is a dominant crop, the cotton-attacking bollworm had developed resistance. “These are isolated cases, and it isn’t clear how widespread the problem will become,” said Dr. Gassmann in […]
Posted in Bt, Genetic Engineering, Monsanto, Resistance | No Comments »
30
Aug
(Beyond Pesticides, August 30, 2011) A new study finds that older men living in California’s Central Valley are more likely to develop prostate cancer if they were exposed to certain agricultural pesticides than those who were not exposed. The study examines exposure via drift rather than occupational exposure, although similar results have been noted in farmworker populations. Exposure to methyl bromide or various organochlorine pesticides increased the risk of cancer by about one and a half times. The study, “Prostate cancer and ambient pesticide exposure in agriculturally intensive areas in California,” was published in the June 2011 issue of the American Journal of Epidemiology. The researchers from the University of Southern California’s Keck School of Medicine recruited 173 men between the ages of 60 to 74 from 670 identified by the California Cancer Registry as being diagnosed with prostate cancer between August 2005 and July 2006 in California’s Central Valley. The authors used calendars and questionnaires to determine where they lived and worked between 1974 and 1999, and compared this to historical data of the corresponding area’s agricultural pesticide use from state pesticide use reports and land use records. In comparison with unexposed persons, increased risks of prostate cancer were […]
Posted in Chemicals, methyl bromide, Prostate Cancer | No Comments »
29
Aug
(Beyond Pesticides, August 29, 2011) The U.S. Environmental Protection Agency (EPA) announced last Thursday that it has entered into an agreement with the California Department of Pesticide Regulation (CDPR) to resolve a civil rights complaint from 1999 which alleged that the department’s renewal of the toxic fumigant methyl bromide in 1999 discriminated against Latino school children whose schools are located near agriculture fields. Per the agreement, CDPR has agreed to expand on-going monitoring of methyl bromide air concentrations by adding a monitor at or near one of the Watsonville, CA area schools named in the original complaint. The purpose of the additional monitor is to confirm that there will be no recurrence of earlier conditions. CDPR will share the monitoring results with EPA and the public and will also increase its community outreach and education efforts to schools that are in high methyl bromide usage areas.EPA says that this is a part of a “backlog” of more than 30 unresolved complaints. The complaint was filed in 1999 under Title VI of the Civil Rights Act of 1964 , which prohibits intentional discrimination and discriminatory effects on the basis of race, color, and national origin by recipients of federal financial assistance. […]
Posted in California, Children/Schools, Environmental Justice, methyl bromide | No Comments »
26
Aug
(Beyond Pesticides, August 26, 2011) The U.S. Department of Agriculture (USDA) has announced that it will hold a free public listening session on the department’s activities related to organic food and farming in order to gather input from farmers, consumers, and other interested parties regarding a wide range of subjects. The agency is hoping to gather more feedback and guidance from stakeholders in the world of organic food and agriculture in order to “help USDA programs examine and prioritize their activities and objectives in order to best serve the organic community.” The scope of matters on which USDA is hoping to hear comments is very broad and seemingly includes any of the department’s actions which could potentially impact organic growing practices or organic producers. The announcement for the listening session outlined two general areas on which comments can be submitted. The first concerns any activities of the National Organic Program (NOP) that do not relate to matters likely to come before the National Organic Standards Board (NOSB). Since the NOSB has its own process for soliciting and reviewing public comments at its biannual meetings, NOP is seeking comments on actions that it takes which are independent of the NOSB. These […]
Posted in Alternatives/Organics, National Organic Standards Board/National Organic Program | No Comments »
25
Aug
(Beyond Pesticides, August 25, 2011) A growth in tick populations and increase in Lyme disease rates over the past few years on an island in Maine have local health officials scrambling to find a solution to keep the problem at bay. So far this year there have been 20 official cases and over 20 suspected cases that have been treated with antibiotics on the island of Islesboro. In the past eight years, the health center has seen at least 69 cases of Lyme disease out of a population of 600, which according to Islesboro’s Tick-Borne Disease Prevention Committee, constitutes an epidemic. The blame for this ”˜epidemic’ has been largely attributed to deer, which serve as the tick’s primary host. There are about 500 deer on the 11-mile-long Island, making it almost as high as the human population. As such, one of the proposed solutions that residents are voting on is to allow gun hunting to reduce the deer herd from 48 to 10 deer per square mile. Unfortunately, though proposals of the prevention committee focus on prevention and include landscape modification in addition to management of deer and other wildlife, they also recommend the use of pesticides including repellants such […]
Posted in Maine, Ticks | No Comments »
24
Aug
(Beyond Pesticides, August 24, 2011) Scientists say the fungus that causes apple scab appears to be growing more resistant to pesticides routinely used to control the fungus, worsening the threat of outbreaks in commercial orchards. For decades, manufacturers have come up with replacements for chemical mixtures the fungus outwitted. By using a rotating lineup of fungicides from year to year, farmers usually stayed a step ahead of the scab. But the fungus now appears to be overcoming multiple fungicides at once. In a paper published this month in the journal Plant Disease, researchers described samples collected in Indiana and Michigan that are resisting all four of the most commonly used chemical treatments: dodine, kresoxim-methyl, myclobutanil, and thiophanate-methyl. “We’ve dealt with fungicide resistance over the years, but this time we’re losing three or four different classes of completely unrelated fungicides at the same time,” said Henry Ngugi, PhD, a plant pathologist with Penn State University’s Fruit Research and Extension Center. “We have to literally go back to the drawing board.” Another ominous sign: The fungus apparently hasn’t developed any new weaknesses while evolving to resist the pesticides, unlike what usually happens in nature, the study found. Anecdotal reports from orchard owners […]
Posted in Agriculture, Alternatives/Organics, Chlorothalonil, Maneb, Ziram | No Comments »