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Office of Pesticide Programs Summary

By Threatened Salmon and Nikiba Daughtry


1,3-Dichloropropene (1,3-D) is a soil fumigant used to control nematodes and certain soil diseases. 1,3-D is registered for use on soils to be planted with all food and feed crops. Most 1,3-D use involves injecting the fumigant into soil at depths from 12-18 " deep, followed by soil sealing such as compaction, a water seal or tarp. The soil seal is used to minimize the amount of 1,3-D which volatilizes into the atmosphere after application. 1,3-D is formulated as a Liquid-Ready to Use at concentrations of 78.3 to 94.0%. 1,3-D is a restricted use pesticide and as such can only be applied by certified applicators. There are no homeowner uses of 1,3-D. An endangered species risk assessment is developed for federally listed Pacific salmon and steelhead. This assessment applies the findings of the Office of Pesticide Program’s Environmental Risk Assessment developed for non-target fish and wildlife as part of the reregistration process to determine the potential risks to the 26 listed threatened and endangered Evolutionarily Significant Units (ESUs) of Pacific salmon and steelhead. The use of 1,3-Dichloropropene may affect but is not likely to adversely affect 11 ESUs when used according to labeled application directions and will have no effect on 15 ESUs in this assessment

Year: 2004
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