This book has been written to cover the contents of the Post-Graduate course on 'Soil Fertility and Nutrient Management' offered by the departments of Agronomy and Soil Science at the state agricultural universities in India and at the ICAR-Indian Agricultural Research Institute, New Delhi. The narrative in the book is brief and to the point in a simple and easy to understand language, demanding least possible time of students. Also at the end of each chapter a few questions of varying kind are provided to recapitulate the main points. This book is intended for preparing the Post-graduate students for their university examinations, competitive examinations and interviews. It is short and permits revision in a short time. The present book discusses the fundamentals of soil fertility conditions in India and the reactions that various plant nutrients undergo in Indian environmental conditions and fulfil the plant need.