2014-06-112014-06-111997https://dl-cri.nsf.gov.lk//handle/1/4043enAnalytical techniquesNutrient availabilityIntermediate zonesSoil analysisSri LankaComparison and evaluation of laboratory methods for determination of plant available phosphorous in coconut growing soils in the Low Country Intermediate Zone of Sri LankaThesisMPhilWIJ 1997University of Peradeniya