Gunaratne, W.D.L.Heenkenda, A.P.Premakumara, K.V.S.Bandara, W.M.S.R.2021-09-132021-09-132000Tropical Agricultural Research and Extension, 3(1):p.32-38https://dl.nsf.gov.lk/handle/1/25319AgricultureNitrogen fixationIsotope dilution techniqueMultipurpose treesReference cropsBiofertilizersGliricidia sepiumCalliandra calothyrsusSenna siameaSenna spectabilisBiological N2 fixing capacity of Gliricidia sepium and Calliandra calothyrsus under different agroclimatic conditionsArticle