Experience with lysimeter studies - selected topics for interpretation

Results of outdoor lysimeter studies on three active ingredients of herbicides, characterized by different soil sorption and biodegradation values, are discussed. The results show that in addition to soil sorption and biodegradation environmental variables considerably influence the faced and mobility of pesticides in soil. A general overview on results of 15 outdoor lysimeter studies demonstrates that pesticides can be clearly distinguished with regard to their leaching behaviour.