Hettiarachchi, L.S.K.2015-08-052015-08-052002Tea Bulletin, 17(1-2):p.18-21https://dl.nsf.gov.lk/handle/1/19800AgricultureEppawela rock phosphatePlant nutritionTea plantationPhosphorusCost benefit analysisFertilizersAdvantages of using Eppawela rock phosphate for teaArticle