Gunaratne, G.P.Samansiri, B.A.D.Hettiarachchi, L.S.K.Tea Research Institute; TRI, Sri Lanka2016-04-182016-04-182009Proceedings of the 218th Experiments and Extension Forum, 30th January 2009, TRI, Talawakelle, 218:p.24-40https://dl-tri.nsf.gov.lk/handle/1/1881Soil and plant nutrentsPotassium AvailabilityMature teaOrganic manureRainfallSlopeFactors Affecting Potassium (K) Availability in Mature Tea Fields