Dharmakeerthi, R.S.Silva, S.N.Yakandawala, A.Jayasinghe, W.K.2013-05-082013-05-082005Journal of the Rubber Research Institute of Sri Lanka87pp.23-35https://dl-rri.nsf.gov.lk/handle/1/1462AgricultureRubber cultivationSoil fertilitySoil analysisLeaf analysisSoil propertiesUrease activityPlant nutritionMoneragalaNutritional status of rubber growing soils in the Moneragala districtA