Agronomy is a science that helps to feed the world. The Agronomy is the backbone of all agricultural sciences, because the management of soil and water, with a view to achieving the production potential of high yielding varieties, in green revolution, is exclusively an agronomic domain. Agronomists can be able to synthesise production practices from several fields of specialization. Fundamentals of Agronomy is a practical guide that provides background information as well as details of agronomy. This book is mainly intended for the agronomy courses of graduate students in the field of agriculture, horticulture, home science, forestry and agricultural engineering. To give the beginner in agricultural study a general idea of the principles of successful production of crops, and to furnish him a basis for study in the other branches of agriculture, is the object of the present volume. This book has been prepared with a specific purpose of importing complete comprehensive information about agronomy and we hope that the students and readers will find this with much utility. We are sure that this book will serve as valuable text-cum-reference book to the graduate students of agricultural universities.