Oxathiapiprolin (DuPont� Zorvec�)is a fungicide which provides exceptional control of Oomycete diseases at very low use rates. The fate of Zorvec� was extensively studied in soil and aquatic systems. Zorvec� degrades in the environment with half-lives of 18-134 days in soil and 19-55 days in water systems. Zorvec� binds strongly to soil and is not mobile. Zorvec�degrades to at least 15 metabolites in soil with 4 considered major. Zorvec�degrades to at least 14 metabolites in aquatic systems with 9 considered major (8 water sediment and 1 aqueous photolysis). Zorvec� was tested to determine endpoints for mammals, birds, and bees. Zorvec� and all major metabolites were tested to determine endpoints for Daphnia magna, fish and green algae. Zorvec� and all major soil metabolites were also tested on earthworm, predatory mites, collembola and soil microflora. Zorvec� demonstrated very little toxicity to any species tested, and the major soil and aquatic degradation products show significantly less toxicity than the parent.

Oxathiapiprolin (DuPont� Zorvec�) environmental fate and effects data: Inputs for ecological risk assessment

248th National Meeting (2014)

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