Plant and Soil

, Volume 63, Issue 3, pp 465–476

Utility of some nitrogen-fixing microorganisms in the phyllosphere of crop plants

  • A. S. Nandi
  • S. P. Sen

DOI: 10.1007/BF02370046

Cite this article as:
Nandi, A.S. & Sen, S.P. Plant Soil (1981) 63: 465. doi:10.1007/BF02370046


The utility of spraying some known N2-fixing microorganisms on rice leaves grown both in N-less sand culture and under field conditions was examined. The effect was compared with that of spraying a phyllosphere N2-fixing isolate of Klebsiella, KUPBR2, and application of nitrogenous fertilizers. All the growth parameters studied including dry weight and N-content were enhanced. Under field conditions number of tillers was increased by 26% withKlebsiella pneumoniae M5al and by 65% with Aphanothece. The dry weight of the plants was enhanced by 61–119%. The yield per 10 m2 was almost doubled with Aphanothece, Beijerinckia 8007,Mycobacterium flavum, K. pneumoniae M5al and KUPBR2. The increases observed withStreptomyces sp. G12 though less spectacular was significant at 1% level with respect to several growth parameters.K. pneumoniae M5al,M. flavum andStreptomyces sp. G12 exhibited nitrogenase activity both in laboratory culture and in association with rice plants.

Key words

Aphanothece Beijerinckia Klebsiella Mycobacterium N2-fixation Phyllosphere Rice Streptomyces 

Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1981

Authors and Affiliations

  • A. S. Nandi
    • 1
  • S. P. Sen
    • 1
  1. 1.Department of BotanyUniversity of KalyaniKalyaniIndia
  2. 2.Department of BotanySamilani CollegeBankuraIndia

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