POTENTIAL FOR ISOPROTURON, ATRAZINE AND MECOPROP TO BE DEGRADED WITHIN A CHALK AQUIFER SYSTEM

Presentation of an experimental field for monitoring aspects of pesticide transport, fate and behaviour in the chalk unconfined aquifer. Fresh groundwater was collected from three boreholes. Analysis of the influence of quantity of available sterile chalk on the microcosm on groundwater degradation and on isoproturon degrading population.comparison of the ability of groundwater sampled from different boreholes to degrade isoproturon. Comparison of numbers of viable bacteria at the upper part of chalk field site sampled in may and marsh and ability of topsoil to degrade isoproturon, atrazine and mecoprop during 220 days.