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Biologia Plantarum

, Volume 21, Issue 1, pp 66–70 | Cite as

Effect of macronutrients and pH on the growth, nitrogen fixation and soluble sugar content of water fernAzolla pinnata

  • B. P. R. Subudhi
  • P. K. Singh
Original Papers

Abstract

Deficiency in Ca and P in mineral medium reduced the growth and nitrogen content ofAzolla pinnata but increased the content of soluble sugars in the plant; the deficiency in K and Mg was less effective in retarding the growth. The pH of the medium from 5 to 8 encouraged the growth and nitrogen fixation, whereas acidic pH of 4 as well as alkaline pH of 9 inhibited the growth and nitrogen fixation.

Keywords

Chlorophyll Nitrogen Fixation Soluble Sugar Acetylene Reduction Soluble Sugar Content 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Academia 1979

Authors and Affiliations

  • B. P. R. Subudhi
  • P. K. Singh
    • 1
  1. 1.Central Rice Research InstituteOrissaIndia

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