Nagarajah, S.2014-12-162014-12-161985-86Journal of the Soil Science Society of Sri Lanka, 4:p.3-27https://dl.nsf.gov.lk/handle/1/16314AgricultureFertilizer recommendationsInorganic fertilizersOrganic fertilizersRice productionFertilizer recommendations for rice in Sri Lanka. a historical reviewArticle