7.Bio Farming

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Deep placement:a method of nitrogen fertilizer application compatible with algal nitrogen fixation in wetland rice soils
(1980) Roger, P.A.; Kulasooriya, S.A.; Tirol, A.C.; Craswell, E.T.
Nitrogen fixation in rice fields
(2005) Kulasooriya, S.A.
Azolla as a biofertilizer for rice in Sri Lanka
(Martiness Nijhoff and W. Junk Publishers:Leiden, 1984) Kulasooriya, S.A.; Hirimburegama, W.K.; Abeysekera, S.W.
Survival and effect of Azorhizobium caulinodans on rice roots
(1993) Van Holm, L.H.J.; Van Nieuwenhove , C.; Kumari, I.A.D.C.T.; Kulasooriya, S.A.; Vlassak, K.
Cyanobacteria and Azolla as biofertilizer for rice
(Oxford and IBH Publ.:New Delhi and Calcutta, 1996) Kulasooriya, S.A.
Nitrogen fixation in some rice soils in Sri Lanka
(Oxford University Press, 1987) Granhall, U.; Kulasooriya, S.A.; Hirimburegama, W.K.; De Silva, R.S.Y.; Lindberg, T.