Dr. S. Jawahar is working as an Assistant Professor (Agronomy) in Dr.M.S.Swaminathan Agricultural College and Research Institute, Thanjavur, Tamilnadu. He has twenty years of Teaching and Research experiences and guided 16 PG and a Ph.D. Scholar. He is serving as Principal Investigator for several external funded projects. He has published more than 150 research articles and authored six books. He has received six national and international awards. Dr.S.Jawahar is also serving as editor, editorial board member and reviewer for several national and international journals. His primary research areas are Nutrient and Weed Management in Agricultural and Horticultural Crops.