Publisher's Synopsis
Agronomists have brought about spectacular benefits by improving cultural, fertilizer and pesticide practices, but there is still much uncertainty in forecasting the best practices for any given field, and indeed of predicting the fate of added chemicals in different situations. New approaches to the problem based on the development and application of quantitative theories and computer models were discussed at the Royal Society Discussion Meeting held in March 1990.;This book, which is a report of the meeting, includes case histories of some of the internationally important models that have been used for predicting productivity and deterioration of soils, and the biodegradation and persistence of unwanted chemicals and their movement into drainage water. There is also much discussion of relevant biological, physical and chemical processes.;The papers are written by experts from the USA, France, The Netherlands and the UK. They should prove valuable to those interested in crop production, pollution and the environment.