This book provides young farmers, farmers and farm managers with a comprehensive learning and reference tool on tractor and farm machinery technologies. From electricity and hydraulics to engines and fuel supply, all tractor systems are covered (lubrication, cooling, transmissions, auxiliaries, etc.), as well as the criteria for buying the right new or used tractor. It describes engine injection and anti-pollution systems, and future prospects for energy sources. This third edition focuses on the technological innovations that underpin intelligent and precision farming. These include digital and power electronics, IT, satellite communications, robotics and intermachine communication.