Assessing Potential for Movement of Active Substances and their Metabolites to Ground Water in the EU : Final Report of the Ground Water Work Group of FOCUS (FOrum for the Co-ordination of pesticide fate models and their USe)
(2009) , 604 pages
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- Authors
- Abstract
- The EU and national registration processes under Directive 91/414/EEC require the assessment of the potential of an active ingredient and its metabolites to move to ground water. An earlier FOCUS work group developed a series of ground water leaching scenarios, which were the basis for the first tier of the EU assessment procedure beginning in 2000. Since that time a number of questions had arisen concerning these scenarios. Also this earlier work group did not provide overall guidance for higher tiers of the entire assessment scheme (field and monitoring studies, lysimeter studies and higher tier modelling approaches). The current work group has developed a tiered approach for conducting these assessments, which includes the relative roles of modelling, field experiments, and monitoring and incorporates higher tier modelling approaches such as geographical information systems (GIS) and non-equilibrium sorption. The work group also has carefully assessed the original scenarios and made changes to harmonize differences between models and to make processes as realistic as possible. For example, soil parameters have been adjusted for two of the original locations, crop kc factors changed for all scenarios, runoff eliminated in all scenarios, and new irrigation schedules generated for all irrigated crops. Finally the EU has significantly grown in size since the original scenarios were issued in 2000. Therefore, whether new scenarios were required to cover the agricultural areas in the new member states needed to be assessed.
- Affiliations
Wageningen University and Research Center Alterra Wageningen, The Netherlands Karlsruhe Service Research Institute Germany Institute of Agrobiology and Soil Fertility Wageningen, The Netherlands Netherlands Environmental Assessment Agency Bilthoven, The Netherlands Cemagref Antony France Forschungszentrum of Juelich Agrosphere Institute
Citations
Boesten, J. J. T. I., Fischer, R., Gottesbüren, B., Hanze, K., Huber, A., Jarvis, T., Jones, R. L., Klein, M., Pokludova, M., Remy, B., Sweeney, P., Tiktak, A., Trevisan, M., Vanclooster, M., & Vanderborght, J. (2009). Assessing Potential for Movement of Active Substances and their Metabolites to Ground Water in the EU : Final Report of the Ground Water Work Group of FOCUS (FOrum for the Co-ordination of pesticide fate models and their USe). https://hdl.handle.net/2078.5/152103