Gaffar, N.M.A.2021-09-272021-09-271999Tea Bulletin, 16(1-2):p.23-27https://dl.nsf.gov.lk/handle/1/25394AgricultureCompostGreen manureOrganic fertilizersMineralsPest controlTea processingMarketingCertificationOrganic farmingOrganic tea cultivationArticle