Precision farming is a farming management concept based on observing and responding to intra field variations. Today, precision farming is about whole farm management with the goal of optimizing returns on input while preserving resources. Precision farming is one of the most scientific and modern approach to sustainable agriculture that has gained momentum in 21st Century. The book presents up-to-date research, field studies and practical applications written by leading scientists and experts in their respective field. This book not only introduces the reader to the hi-tech technology of precision farming but it also presents a broad overview of its concepts and the tools of this system. It is hoped that the book will serve as a good text cum reference source for those interested in Precision farming.