TY - BOOK AU - Palaniswamy R. AU - Ahammed M. AU - Potty S.N. AU - Subbarayalu G. TI - Characterisation of potassium in rubber growing soils PY - 1978/// PB - In: Agronomy soils physiology and economics of plantation crops: Placrosym I, 1978, Kottayam. (Ed. E.V. Nelliat). Indian Society for Plantation Crops, Kasaragod, India, pp. 45-53. KW - Rubber growing soil KW - Soil potassium ER -