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Fenamiphos Use Facts and Phaseout
http://edis.ifas.ufl.edu/ ( Publisher's URL )
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Permanent Link: http://ufdc.ufl.edu/IR00001247/00001
 Material Information
Title: Fenamiphos Use Facts and Phaseout
Physical Description: Fact Sheet
Creator: Fishel, Fred
Publisher: University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication: Gainesville, Fla
Publication Date: 2006
 Subjects
Subjects / Keywords: Pesticides
Genre:
Spatial Coverage:
 Notes
Abstract: "This document describes general uses of fenamiphos, addresses specific label requirements regarding its use in Florida, and provides a description of the products phaseout."
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Diana Hagan.
Publication Status: Published
General Note: "Original publication date January 2006. Reviewed January 2009."
General Note: "PI-93."
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00001247:00001

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Frederick M. Fishel2 1. This document is PI-93, one of a series of the Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date January 2006. Reviewed January 2009. Visit the EDIS Web Site at http://edis.ifas.ufl.edu. 2. Frederick M. Fishel, associate professor, Agronomy Department, and Director, Pesticide Information Office; Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611. The use of trade names in this publication is solely for the purpose of providing specific information. UF/IFAS does not guarantee or warranty the products named, and references to them in this publication does not signify our approval to the exclusion of other products of suitable composition. This document describes general uses of fenamiphos, addresses specific label requirements regarding its use in Florida, and provides a description of the products phaseout. Fenamiphos is an organophosphate insecticide/nematicide used to control pest nematodes and insects in a wide variety of vegetable, field and fruit crops, including citrus. In non-food crops, it has some approved uses on turfgrass, ornamentals and industrial sites. In the United States, nearly 300,000 acres are treated with almost one million pounds annually. Originally designed to be used during World War II as a human nerve gas, its now manufactured and marketed by Bayer CropScience under the trade name, Nemacur. It is commercially available in both dry and liquid formulations in varying concentrations. Fenamiphos is a Restricted Use Pesticide due to high acute toxicity and toxicity to wildlife. The U.S. Environmental Protection Agency (EPA) has assessed the risks of fenamiphos and prepared an Interim Reregistration Eligibility Decision (IRED) document for this pesticide (http://www.epa.gov/REDs/fenamiphos_ired.pdf) The IRED identifies risk mitigation measures needed to reduce risk, as well as data needed to better characterize risks. Bayer CropScience has requested voluntary cancellation of all existing fenamiphos registrations rather than committing to develop additional data. Fenamiphos residues in food do not pose risk concerns; however, exposure to shallow water tables (less than 50 feet deep) and extremely vulnerable soils do pose risk concerns. Extremely vulnerable soils are defined as, hydrologic soil group A soils that are excessively drained and predominantly sand or loamy sand such as soils in the suborder psamments (EPA 2002) These classifications and soil taxonomy refer to USDA definitions. Therefore, all use of fenamiphos in areas with extremely vulnerable soils and shallow water tables were phased out May 31, 2005. Use on all other soils will cease effective as of May 31, 2007. Although fenamiphos is not used in residential settings, golf course uses could lead to golfer exposure from residues on treated courses. EPA feels that the watering-in of fenamiphos following its application according to label directions adequately protects golfers from exposure.

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Fenamiphos Use Facts and Phaseout 2 For manufacturing-use products only, all sale and distribution by Bayer CropScience of existing stocks will be prohibited effective May 31, 2007. Sale and distribution of existing stocks may continue until March 31, 2009. Use of end-use products in the channels of trade may continue until depleted, except where prohibited on the label. A summary of the fenamiphos phaseout is itemized in the following table. Buttler, T., W. Martinkovic, and O.N. Nesheim. 2003. Factors influencing pesticide movement to ground water. UF/IFAS EDIS Document PI-2. http://edis.ifas.ufl.edu/PI002. Collins, M.E. 2003. Key to soil orders in Florida. UF/IFAS EDIS Document SL-43. http://edis.ifas.ufl.edu/SS113. Crop Data Management Systems, Inc. (CDMS). http://cdms.net/manuf/manuf.asp. Environmental Protection Agency. 2002. Interim Reregistration Eligibility Decision (IRED): Fenamiphos. EPA 738-R-02-004. http://www.epa.gov/REDs/fenamiphos_ired.pdf Fishel, F.M. 2005. Pesticide toxicity profile: organophosphate pesticides. UF/IFAS EDIS Document PI-50. http://edis.ifas.ufl.edu/PI087. Nesheim, O.N. 2003. Management practices to protect surface water from agricultural pesticides. UF/IFAS EDIS Document PI-22. http://edis.ifas.ulf.edu/PI014. Nesheim, O.N. 2003. Use management practices to protect ground water from agricultural pesticides. UF/IFAS EDIS Document PI-1. http://edis.ifas.ufl.edu/PI001.

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Fenamiphos Use Facts and Phaseout 3 Summary of fenamiphos phaseout. May 31, 2005 Use in areas with extremely vulnerable soils and shallow water tables cancelled. May 31, 2007 Use on all soils cancelled May 31, 2007 Sale and distribution of existing stocks by Bayer CropScience cancelled March 31, 2009 Final sale deadline for fenamiphos products Until depleted Use of end-use products in the channels of trade, except where prohibited by the label