Samarappuli, L.2012-07-312012-07-312000Bulletin of the Rubber Research Institute of Sri Lanka42pp.1-10https://dl.nsf.gov.lk/handle/1/9072AgricultureAgricultural EconomicsRubber plantationFertilizer utilizationPlant growthCost analysisPlant nutritionSoil managementEconomics and efficiency of fertilizer utilization in immature rubberArticle