Subramanian, PGeorge V. ThomasKrishnakumar, V.Alka GuptaMurali GopalSelvamani, V.2019-09-102019-09-102018Hands on Training in soil Testing and Fertilizer Recommendation,2018, P, 77-95http://hdl.handle.net/123456789/7602encoconut farmingorganic farmingBook chapter