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Nitrogen fixation in rice fields

Kulasooriya, S.A. (2005)
Nitrogen fixing cyanobacteria:their diversity, ecology and utilisation with special reference to rice cultivation

Kulasooriya, S.A.; Magana-Arachchi, D.N. (National Science Foundation:Colombo 07, 2016)
Nitrogen fixation in some rice soils in Sri Lanka

Granhall, U.; Kulasooriya, S.A.; Hirimburegama, W.K.; De Silva, R.S.Y.; Lindberg, T. (Oxford University Press, 1987)
Cyanobacteria and Azolla as biofertilizer for rice

Kulasooriya, S.A. (Oxford and IBH Publ.:New Delhi and Calcutta, 1996)
Soil microbial diversity and its use in crop production

Kulasooriya, S.A.; Seneviratne, G. (Biodiversity Secretariat, Ministry of Environment and Renewable Energy:Battaramulla, 2013)
Azolla as a biofertilizer for rice in Sri Lanka

Kulasooriya, S.A.; Hirimburegama, W.K.; Abeysekera, S.W. (Martiness Nijhoff and W. Junk Publishers:Leiden, 1984)
Constraints for the widespread use of Azolla in rice production

Kulasooriya, S.A. (Kluwer Acad. Publishers, 1990)
Survival and effect of Azorhizobium caulinodans on rice roots

Van Holm, L.H.J.; Van Nieuwenhove , C.; Kumari, I.A.D.C.T.; Kulasooriya, S.A.; Vlassak, K. (1993)
Growth and nitrogen fixation in Azolla pinnata under field conditions

Kulasooriya, S.A.; Hirimburegama, W.K. (National Science Council:Colombo, 1982)
Deep placement:a method of nitrogen fertilizer application compatible with algal nitrogen fixation in wetland rice soils

Roger, P.A.; Kulasooriya, S.A.; Tirol, A.C.; Craswell, E.T. (1980)

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