K. R. Krishna, PhD, has authored several books on issues in international agriculture, encompassing topics in agroecosystems, field crops, soil fertility and crop management, precision farming, and soil microbiology. His more recent titles deal with topics such as agricultural robotics and drones and satellite guidance to improve soil fertility and crop productivity. Dr. Krishna is a member of several professional organizations, including the International Society for Precision Agriculture, the American Society of Agronomy, the Soil Science Society of America, the Ecological Society of America, the Indian Society of Agronomy, the Soil Science Society of India, among others. He is retired from the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in India.