Samarappuli, L.2012-07-312012-07-312000Bulletin of the Rubber Research Institute42pp.11-24https://dl.nsf.gov.lk/handle/1/9073AgricultureAgricultural economicsRubber plantationFertilizer utilizationPlant growthSoil managementCost analysisEconomics and efficiency of fertilizer utilization in mature rubberArticle