The book “Organic Agriculture: An Overview” represents different aspects of organic agriculture. This book has detailed elaborations on organic farming, biofertilizers, role of pests and pesticides, biopesticides in crop protection, weed management, vegetables and fruit production by organic farming. The book also highlights about the agricultural policies in India, scenario of organic food consumption, export of organic products from India and its certification. Similarly topics like use of biofertilizers and biopesticides towards zero residue farming is also highlighted in the book. The lack of sustainability in production in recent years is becoming a major cause of concern. The irrational and indiscriminate use of chemical fertilizers, herbicides and pesticides (insecticides, fungicides and nematicides) causes many negative consequences, mainly the famous 3 R's like resistance, resurgence and residue aspects. These factors also cause indirect effects on the human and soil health, environment and for sustainability of modern agriculture. Overall, this book is covering the most of the aspects of organic agriculture and will provide latest informations to students, teachers, researchers and agriculturists who are working on organic agriculture.

Prof. R. P. Singh, Director, Institute of Agricultural Sciences, Banaras Hindu University (BHU), Varanasi, India has been completed his master degree M.Sc. in Agronomy (1968) from Banaras Hindu University, Varanasi and doctoral degree Ph.D. in Agronomy (1972) from Indian Agriculture Research Institute (IARI), New Delhi. During his academic period he got two meritorious awards viz., National Merit Scholarship in M.Sc. (Ag.) and Senior ICAR Fellowship in Ph.D. degree. Dr. Singh starts his career from a Lecturer (Agronomy) in Banaras Hindu University (BHU) during 1972 and reached on an appreciable position of Director (2011), Institute of Agricultural Sciences, BHU, Varanasi via Reader (1981), Professor (1991), Head (2003) of Agronomy Department and Dean (2007) of Faculty of Agriculture, BHU. Besides 38 years teaching experience Prof. Singh has been engaged with independent research and guided a number of students of M.Sc. (26) and Ph.D. (19) degree programmes. He has published more than 125 research papers, popular articles, book chapters and books/manuals under various leading journals and reputed publishers. Apart from this he has engaged as principal investigator with several projects funded by different organizations. During his professional career Dr. Singh has been awarded by many national and International bodies. Dr. Ramesh K. Singh, Ph. D., works as Research Associate (Central Sector Scheme of PPV & FRA), ICAR-Indian Institute of Vegetable Research (IIVR) Varanasi-221305 (U.P.). He trained in e-Learning concepts to modernise teaching skill using media solution modules and analyzing statistical data. He earned his PhD. degree in Botany from VBS, Purvanchal University, Jaunpur, U.P., India. Dr. Singh has basic training in the areas of vegetables breeding, genetics and biotechnology, especially this period coincided with the beginning of molecular mapping in tomato. In the duration of his Ph.D. he has also worked in many projects of ICAR and DBT on some vegetable crops such as tomato, chilli, okra and Indian bean (Dolichos lablab) like biotic and abiotic stresses in both field and lab environments as well as used biochemical and molecular applications in the crop. Dr. Singh has published more than 75 publications including books, book chapters, popular articles, research papers, review papers and research abstract from national and international publishers.