Granhall, U.Kulasooriya, S.A.Hirimburegama, W.K.De Silva, R.S.Y.Lindberg, T.2021-09-132021-09-131987MIRCEN Journal, 3:p.367-388https://dl.nsf.gov.lk/handle/1/25268AgricultureRiceNitrogen fixationCyanobacteriaBiofertilizersNitrogen fertilizersField experimentationSoil propertiesAcetylene reduction activitySoil fertilityNitrogen fixation in some rice soils in Sri LankaArticle