Ratnayake, M.P.K.Kumaragamage, D.Dahanayake, K.2014-12-162014-12-161996Journal of the Soil Science Society of Sri Lanka, 9:p.56-69https://dl.nsf.gov.lk/handle/1/16312AgricultureEppawala rock phosphateSelectively-mined primary apatite crystalsSolubilityPhosphorus fertilizersSoil chemistryPeatEfficiency of peat-mixed rock phosphates on some alfiisols and ultisols of Sri LankaArticle