Dr. K. Annadurai is an Associate Professor of Agronomy in Agricultural Engineering College and Research Institute, Kumulur, Tamil Nadu Agricultural University. He did his B.Sc. (Ag.), M.Sc.(Ag.) and Ph.D. degrees at TNAU, Coimbatore. He was awarded the PRII Fellowship for perusing his M.Sc. (Ag.) and Ph.D. degrees. His major field of specializations is soil fertility management and organic farming. He has written one chapter in the book “Trees and Tree farming” (Edited by P.K. Thampan, Peekay Tree Crops Development Foundation, Cochin and eight chapters in the book “Agricultural inputs and Environment” published by Scientific Publishers, Jodhpur (Edited by Dr. SP. Palaniappan)). He is teaching undergraduate students and has five books (1. Organic Farming : Theory and Practice by Scientific Publishers, Jodhpur; 2. Agriculture : Facts and Figures by Kalyani Publishers, Ludhiana; 3. Handbook on Rice Production Technology by Students Publishers, Trichy; 4. Farming systems in the Tropics by Kalyani Publishers and 5. Glossary of terms in crop production by Scientific Publishers) and about 30 publications to his credit. He is an active member in many scientific bodies like J. of Potassium Research (PRII, Haryana), Indian Society of Agronomy (New Delhi), Madras Agricultural Journal (Coimbaotre, Tamil Nadu), Oryza (ARRW, Cuttack, Orissa) and Kisan World (Chennai, Tamil Nadu). He was a member in Board of Studies (Agriculture), TNAU, Coimbatore for the period of three years (1998 – 2000). He was awarded “MASU – 2000” for the best books published in English (two awards) and a silver Medal for the best article by SISSTA, India.