This book deals with ways and means of managing food and water security in various agroclimatic environments through the integration of R & D, training, people participation, agronomic practices, economic instruments, and administrative policies. It includes contributions by global experts in the field, who elaborate on the governance of food security, the biophysical dimensions of more food per drop, as well as on the socioeconomic dimensions of food security. Subjects are presented grouped in three sections: 1. Biophysical Dimensions of Food Security; 2. Socioeconomic Dimensions of Food Security and 3. Governance of Food Security in Different Agroclimatic and Socioeconomic settings. Recommended reading for professionals, water and agricultural scientists, engineers, planners and policy makers in the field of food and water security.