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5H - Catchment area mgnt (WEP/212) Pesticide use in and outside agriculture with a major impact on surfacewater quality in catchments. Jongbloed, R.H.1, Hulskotte, J.H.J.1, Kempenaar, C.3, 1 TNO-MEP, Den Helder, Noord Holland, The Netherlands3 ABSTRACT- An analysis was made of the local variation in the use of pesticides in the province of Utrecht in the Netherlands and the connected potential environmental impact of pesticide emissions on aquatic ecosystems. The aim of the study was to identify and quantify the major sources of pesticide use and impact, taking the regional variation of pesticide use into account. The analysis was targeted at drawing conclusions for individual substances, agricultural crops, civil land-use types, catchment basins, complete agricultural sector, complete non-agricultural sector and recreational shipping. The results can be used for the (re)design of environmental monitoring programmes of pesticides in surface waters and the development of region based policies towards sustainable pesticide use and emission. Important groups of users of pesticides could be approached with a policy programme in order the improve the quality of the surface water. The most likely candidates are one group from the agricultural sector (orchards), five groups from the non-agricultural sector (private house areas, sports-fields, agrarian non-crop areas, allotment gardens, amenity gardens, railway areas) and the recreational shipping sector. The analysis tool is suitable for application to other regions as well. Key words: agriculture, pesticides, antifouling, monitoring |
