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Observations on nitrogen-fixation by some blue-green algae and remarks on its potentialities in rice culture

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Proceedings / Indian Academy of Sciences

Summary

The results of experiments in connection with the estimation of nitrogen fixed by four species of blue-green algae are presented and discussed. The species tested wereTolypothrix campylonemoides, Nostoc sphaericum, N. amplissimum andWestiella sp. Of these,Tolypothrix was the most efficient. The quantity of extra-cellular nitrogen liberated has also been estimated; this is only a fraction of the whole. The potentialities of using blue-green algal species in rice culture are discussed. It is indicated that blue-green algae could be employed as a substitute for nitrogen fertilizers such as ammonium sulphate, for rice culture in waterlogged conditions.

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Authors and Affiliations

  1. Central Rice Research Institute, Cuttack-6, Orissa

    R. Subrahmanyan F.A.Sc. & M. N. Sahay

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  1. R. Subrahmanyan F.A.Sc.
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  2. M. N. Sahay
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Subrahmanyan, R., Sahay, M.N. Observations on nitrogen-fixation by some blue-green algae and remarks on its potentialities in rice culture. Proc. Indian Acad. Sci. 60, 145–154 (1964). https://doi.org/10.1007/BF03052359

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  • DOI: https://doi.org/10.1007/BF03052359

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