Degradation Kinetics

A FOCUS Degradation Kinetics Workgroup was active from 2002 to 2006. This workgroup developed recommendations for calculating degradation kinetics in the registration process at EU and MS level.

 Overview This website contains all available material developed by the FOCUS Degradation Kinetics Workgroup:
  • the report of the workgroup
  • a package of presentations and exercises used in two trainings organised by the workgroup
  • a spreadsheet containing software for fitting results of degradation rate studies with a parent compound in soil
 Documentation Guidance Document on Estimating Persistence and Degradation Kinetics from Environmental Fate Studies on Pesticides in EU Registration
  • Report of the FOCUS Work Group on Degradation Kinetics
  • EC Document Reference Sanco/10058/2005, version 2.0, June 2006
  • Generic Guidance for Estimating Persistence and Degradation Kinetics from Environmnetal Fate Studies in Pesticides in EU Registration (version 1.1) : document based on the official guidance document of FOCUS Degradation Kinetics in the context of 91/414/EEC and Regulation (EC) No 1107/2009 [full citation is FOCUS (2006) “Guidance Document on Estimating Persistence and Degradation Kinetics from Environmental Fate Studies on Pesticides in EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, EC Document Reference Sanco/10058/2005 version 2.0, 434 pp]. This document does not replace the official FOCUS report. However, a need was identified to maintain consistency with developments in related guidance finalised after the work of the FOCUS kinetics work group was completed in an up-to-date version controlled document. In particular wording has been updated to accommodate the EFSA Guidance on DegT50. That is the purpose of this document. (20/Jan/2015) . This version 1.1 should be used for applications submitted after 1 May 2015. 
  • Historical Document: Generic Guidance for Estimating Persistence and Degradation Kinetics from Environmnetal Fate Studies in Pesticides in EU Registration (version 1.0) : document based on the official guidance document of FOCUS Degradation Kinetics in the context of 91/414/EEC and Regulation (EC) No 1107/2009 [full citation is FOCUS (2006) “Guidance Document on Estimating Persistence and Degradation Kinetics from Environmental Fate Studies on Pesticides in EU Registration” Report of the FOCUS Work Group on Degradation Kinetics, EC Document Reference Sanco/10058/2005 version 2.0, 434 pp]. This document does not replace the official FOCUS report. However, a need was identified to maintain consistency with developments in related guidance finalised after the work of the FOCUS kinetics work group was completed in an up-to-date version controlled document. In particular wording has been updated to accommodate the EFSA Plant Protection product and their Residues (PPR) panel opinion on the Q10 to be used for normalising DT values to reference temperature. That is the purpose of this document. (25/Nov/2011)