Food security is a matter of prime importance in India where more than one third of its population is estimated absolutely poor and as many as half of its children have suffered from malnourishment. The agriculture sector has an important role to play as a majority of India’s rural population depends heavily on this sector for its livelihood and income. Diversification of agriculture is important to attain the objectives of increased farmers’ income, employment generation and sustainability of natural resources and meet the requirements of food and nutritional security in the country. Hence, there is need to accelerate the pace of dissemination of information on various aspects of diversified agriculture. The present book entitled “Diversification of Agriculture for Food and Nutritional Security” includes 28 chapters contributed by eminent researchers in their respective field. This book focuses on major aspects of diversification of agriculture including livestock, organic farming, protected cultivation, plant protection, value addition, education, indigenous and advanced farming techniques to meet the various demands of the country. Some imperative works related to agricultural technology, innovation and adoption of technology placed in this book can give a new sight to the students and researchers. We hope that this book will be of immense use of teachers, researchers, students, policy makers, consultants and extension functionaries who are concerned with agriculture