Roger, P.A.Kulasooriya, S.A.Tirol, A.C.Craswell, E.T.2021-09-132021-09-131980Plant and Soil, 57:p.137-142https://dl.nsf.gov.lk/handle/1/25283AgricultureNitrogen fixationBiofertilizersBlue green algaeDeep placementNitrogen fertilizersWetlandsRiceDeep placement:a method of nitrogen fertilizer application compatible with algal nitrogen fixation in wetland rice soilsArticle