K. R. Krishna, PhD, is an agricultural scientist. He has authored several books on international agriculture, encompassing topics such as agroecosystems, field crops, soil fertility and crop management, precision farming, and soil microbiology. His more recent books deal with agricultural robotics, drones, and satellite guidance to improve soil fertility and crop productivity. He is a member of the International Society of Precision Farming, American Society of Agronomy, Soil Science Society of America, Ecological Society of America, Indian Society of Agronomy, and Soil Science Society of India.