Irrigation and drainage have played key roles in the success of agriculture. The purpose of irrigation is to produce crops that have economic and social value. In this book, effort is made to present the fundamental principles of the methods of culture by irrigation and drainage. This book describes the relations of water to soils and to plants which must be grasped in order to permit a rational practice of applying, removing or conserving soil moisture in crop production. The practical problems from the farmers, fruit growers standpoints, with the principles which underline them are presented in concise manner. Efforts have been made to broaden the conceptions of general soil management, even when neither irrigation nor drainage is practiced. This is a valuable source book for students, teachers and researcher of Agronomy. Soil Science, Crop Production, Agricultural Engineering, farmers and all those who are involved in agriculture.