With the growing world population and the need for more food, soil conservation has a vital role to play. This book is a standard work on the subject and has been revised and updated to incorporate all the latest information. It provides information on recent advances such as: the greater emphasis on sound land and farming methods; the importance of involving the farmer at all stages; and the need for low-cost, low-labour methods. The author shows how research, theory and practice can be applied in the developing countries, and presents the engineering approach to soil conservation in a simple way.