Sirisena, D.N.Wickramasinghe, W.M.A.D.B.Weerakoon, W.M.W.Bandara, S.T.Kumaragamage, D.2014-12-162014-12-162001Journal of the Soil Science Society of Sri Lanka, 13:p.46-51https://dl.nsf.gov.lk/handle/1/16328AgricultureSoil fertilityOrganic manure applicationRice cultivationNitrogen supplementary sourceNitrogen uptakeOrganic manure as a supplementary source of nitrogen in wetland rice cultivationArticle