ABSTRACT
ABSTRACT The way a pesticide is used, its chemical properties together with local climatic, edaphic and hydrological factors largely determine the likelihood that it will reach ground water. The ways in which these factors operate are examined in order to identify ways in which the risk of ground water contamination can be minimised. The use of controlled release formulations does not seem promising at the moment and modifications to soil management practices and the use of undersown cover plants are unlikely to make a major contribution. Reduced rates of application, restricting the time of application to periods of high soil microbial activity and when evapotranspiration exceeds precipitation together with limitations on areas where pesticides are used are likely to be effective. This is supported by early indications from minimization strategies in practice
Key words: pesticides, application timing, use restrictions, minimization.
