This book will be useful for students of agriculture, agronomy, agricultural engineering, agronomists, scientists, development professionals and other professionals working in allied fields. With world population increasing at an alarming rate, there will be a substantial increase in demand for food, fodder and fiber in future. Expertise in the field of agronomy, irrigation and nutrient management is essential for finding solutions to the problems of unproductive lands. Such lands will become substantially productive with agronomy, irrigation and nutrient management technologies and practices. Productivity of unfertilized lands and lands now producing crops under natural rainfall could be increased considerably with irrigation and fertilization. Though editing has been done with utmost care, a few mistakes might have occurred inadvertently in the book. Suggestions, feedback and corrections from readers are welcome to improve this publication in the next edition.