There are few books in Agronomy which satisfies the requirements of students, particularly preparing for competitive examinations. This book is designed to satisfy their needs and is presented in a systematic manner to understand every fundamental aspect related to agronomy. This book covers all the basic concepts of agronomy viz., tillage, sowing, soil fertility and nutrient management, water management, weed management, dryland agriculture and sustainable agriculture. Some of the new topics like climate change, herbicide resistance and herbicide tolerant crops were also included. Current statistics related to agriculture is also provided for the benefit of the students. This book will be very much useful for those students preparing for NET, ARS, JRF, SRF and PG and Ph.D entrance examinations.