February 12, 2014 – 12:00-1:00PM Eastern US Time (17:00 GMT)
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Eva Budde, Project Manager Environmental Fate/Modeling, Dr. Knoell Consult GmbH, Mannheim, Germany
For registration of agrochemicals in Europe, calculation of predicted environmental concentrations is mandatory. Input for the environmental fate models used for these calculations is frequently derived from terrestrial field dissipation studies. A new guidance for evaluating these studies is currently being developed by the European Food Safety Authority (EFSA). In this presentation, an overview of the procedure for deriving degradation rates as recommended in the existing material will be given, and the scientific background as well as implications on the study design will be discussed.
Richard Allen, Senior Manager, Valent Technical Center, Valent U.S.A. Corporation, Dublin, California
Terrestrial field dissipation studies are almost always required for registration of agrochemicals in North America and, depending upon the results of laboratory studies, frequently required in Europe. An OECD expert group is currently engaged in developing harmonized guidance for conduct of studies and a crosswalk for comparison of North American and European Ecoregions. Following the ACS symposium in September, this presentation will present a perspective on the opportunities and challenges of conducting these studies to better inform environmental risk assessments as well as to satisfy the regulatory data requirements of European and North American authorities.