Dr Ratan Kumar is working as Scientist (Horticulture) in Krishi Vigyan Kendra, Rohtas of Bihar Agricultural University, Sabour, Bhagalpur, Bihar. He did M.Sc. (Ag) and Ph.D. in Horticulture from R.B. S. Collage, Bichpuri, Agra at B.R. Ambedkar University, Agra (U.P.) He published 3 book, 7 book chapter, 13 research paper, 21 research abstracts, 12 articles published in national and international magazines and 22 technical bulletins for support of researcher and farmers. He attended several seminar, symposia, conferences and workshops on National and International level and has made more than 21 presentations in these academic events. Dr Kumar received several awards viz Best KVK Scientist- 2020 by Bihar Agricultural University Sabour Bhagalpur, "Young Scientist Award-2017" by Society for Scientific Development in Agriculture & Technology, "Eminent Scientist Award-2018" by Agro-Environmental Development Society (AEDS) 2018, "Excellence of Extension Award' 2018 by Society for Agriculture Innovation & Development etc. He is also associated with 7 scientific societies and served as extensions and researcher.