Humberto González Rodríguez, PhD, is a faculty member at the Autonomous University of Nuevo Leon, Facultad de Ciencias Forestales (School of Forest Sciences), Nuevo Leon, Mexico. He is currently working on water relations and plant nutrition in native woody trees and shrubs, northeastern Mexico. In addition, his research includes nutrient deposition via litterfall in different forest ecosystems. Dr. Rodríguez teaches chemistry, plant physiology, and statistics. Ratikanta Maiti, PhD, DSc, was a world-renowned botanist and crop physiologist. His varied experience included work at the former Jute Agricultural Research Institute, India; as a plant physiologist on sorghum and pearl millet at the International Crops Research Institute for the Semi-Arid Tropics; as a Research Advisor at Vibha Seeds, India; as a professor and research scientist at several universities in Mexico. A prolific author, he received several international awards and was chief editor of three international journals. Ch. Aruna Kumari, PhD, is Assistant Professor in the Department of Crop Physiology at Agricultural College, Jagtial, Professor Jaya Shankar Telangana State Agricultural University, India. She also has research experience at varied Indian Council of Agricultural Research institutes as well as at Vibha Seeds. She is the author of several book chapters and was a coeditor of several books. She had also published research publications in national and international journals.