US EPA bans ethyl parathion

The US Environmental Protection Agency (EPA) and chemical manufacturer Cheminova agreed to cancel use of ethyl parathion, a toxic pesticide and suspected endocrine disruptor (as listed by the Pesticide Action Network Pesticide Database). Already highly restricted, the new step will stop the organophosphate's use on corn grown for seed immediately, will end imports and cancel registrations for its use in other pesticide products by December 31, and will phase out its use on alfalfa, barley, corn, cotton, canola, sorghum, soybean, sunflower, and wheat by October 31, 2003. Workers and wildlife face the highest health risks from ethyl parathion and US-grown food and drinking water pose no significant dietary risk, according to EPA's recently released revised risk assessments.

http://www.som.tulane.edu/ecme/eehome/newsviews/whatsnew/#octban

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and The Northwest Coalition for Alternatives to Pesticides (NCAP) P.O. Box 1393, Eugene, OR 97440 (541) 344-5044, Fax (541) 344-6923 ***** Please note new web site address http://www.pesticide.org :

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''REGULATORY STATUS: Because of its high toxicity and risks of exposure to agricultural workers and to birds, and in response to the manufacturers' request, EPA in January 1992 announced the cancellation of all uses of parathion on fruit, nut and vegetable crops. The only uses retained are those on alfalfa, barley, corn, COTTON, SORGHUM, SOYBEANS, sunflowers and wheat. Further, to reduce exposure of agricultural workers, parathion may be applied to these crops only by commercially certified aerial applicators (crop dusters) and treated crops may not be harvested by hand.'' According to the Pesticide Information Profile from the Extension Toxicology Network, ''EPA intends to cancel all uses of parathion in the near future (12, 13).

Parathion is one of the MOST ACUTELY TOXIC pesticides registered by the EPA. Because of its highly toxic nature, parathion is classified as a Restricted Use Pesticide (RUP) (1, 3). RUPs may be purchased and used only by certified applicators.''

Products containing parathion must bear the signal word "Danger" (3). I emphasized the crops commonly grown in Louisiana by capitalizing their names. This was done because a number of people on these lists live in or near agricultural areas where they have been aerially sprayed by chemicals such as these.

With all this in mind, I share the following alert from the Northwest Coalition for Alternatives to Pesticides, which has members coming from all over the United States and Canada. I also am a member. ~Bunny Snow

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Hello Friends;

This action alert came to us from our friends at the Pesticide Action Network. This action alert if VERY IMPORTANT, so we are forwarding it along to our members and subscribers. Thank you for your attention to this issue.

ACTION:

Please send comments to EPA on the risk assessment and re-registration of ethyl parathion. Ask EPA to cancel all registered uses of ethyl parathion based on known hazards to birds and other wildlife species including, bees, fish, reptiles and mammals. Tell them that their assessment clearly indicates that the ongoing and unavoidable hazards of ethyl parathion use far outweigh the benefits.

The full assessment is available via EPA at http://www.epa.gov/pesticides/op/ethyl_parathion.htm

Or go to the ABC Web site and click on pesticides: http://www.abcbirds.org

Submit comments to:

Public Information and Records Integrity Branch, Information Resources and Services Division (7502C), Office of Pesticide Programs, Environmental Protection Agency, Ariel Rios Bldg., 1200 Pennsylvania Ave., N.W., Washington, DC 20460.

All comments must be identified with the docket number OPP-34197A. Submit comments by email to: opp-docket@epa.gov.

Source/Contact: Kelley R. Tucker, Pesticides and Birds Campaign, American Bird Conservancy, 1250 24th St. NW, Suite 400, Washington DC 20037, phone (202) 778-9773; fax (202) 778-9778; email ktucker@abcbirds.org.

American Bird Conservancy (ABC) urges conservationists, scientists, bird watchers and the public to respond to a U.S. Environmental Protection Agency (EPA) request for comment on the ecological effects of ethyl parathion. Ethyl parathion, an organophosphate insecticide, is highly toxic to birds and has caused numerous wildlife mortality incidents. Bird die-offs have been documented in a wide range of species including waterfowl, shorebirds, raptors and songbirds. Also, even after extensive efforts to mitigate hazards to humans, ethyl parathion continues to raise significant safety concerns for farm workers.

According to the U.S. Fish and Wildlife Service, "substantial evidence verifies that mortality of migratory birds and other non-target organisms occurs even when parathion is applied in complete conformance with the label." Birds can be poisoned by ingestion of insects or grains with residues, by preening or bathing, via inhalation of spray particles or dermally through feet or exposed skin (especially of chicks and also brood patches of nesting birds).

In 1991, after numerous lethal incidents involving humans, wildlife and domestic animals, EPA restricted use of ethyl parathion to nine crops: alfalfa, barley, corn, cotton, canola, sorghum, soybean, sunflower and wheat. Further restrictions attempted to minimize worker exposure by prohibiting hand-harvesting of crops and by delaying entrance into fields for three to six days after spraying. Applications, however, are still made by plane and helicopter. Birds and other wildlife, in addition to being exposed during spraying, cannot be stopped from entering sprayed fields. Currently, approximately 600,000 pounds of ethyl parathion is used annually on over 775,000 acres of land. (See http://www.abcbirds.org   for crop specific information.) In the vast majority of cases, there are economical and effective alternatives to ethyl parathion.

Additional concerns * The EPA risk assessment states "uses of parathion are likely to result in bird deaths. In addition to mortality, a suite of sub-lethal effects has been documented in avian species. These include reproductive effects, health impacts for nesting birds and their young, damage to food resources, feeding and behavioral changes and greater vulnerability to predation and environmental stress." * Use of ethyl parathion is highest in the Great Plains and prairie pothole region where effects can be devastating to wetland ecosystems critical to bird populations even when extraordinary precautions are taken. This region accounts for at least 50% of annual waterfowl production in North America. * The primary degradate of ethyl parathion, paraoxon, is five times more easily absorbed than parathion and 40 to 50 times more toxic. Residues of parathion and paraoxon have been found at relatively high concentrations on crop foliage and soils for at least 45 days after parathion was applied at normal rates under dry conditions.

* Other than strengthening label warnings, EPA has been unable to identify additional risk mitigation strategies that might reduce ongoing threats to wildlife and humans from ethyl parathion use.