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Effect of Salinity on the Growth and Nitrogen Fixation of Azotobacter Beijerinckii

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Title Effect of Salinity on the Growth and Nitrogen Fixation of Azotobacter Beijerinckii
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Creator Paulraj,R
Ninawe,A S
 
Subject Effect of Salinity
Growth
Nitrogen Fixation
Azotobacter Beijerinckii
 
Description Not Available
The influence of salinity on Lhe growth and nitrogen fixation capacity of Azotobacter beijerinckii in prawn-cum-paddy culture system is discussed in the present paper. Thirty nitrogen fixing Azotobacter strains isolated from brackishwater shrimp ponds identified into three species viz., Azotobacter chroococcum, A. virtelandii and A. beijerinckii. The study on eight strains of A. beijerinckii reveals that the salinity levels above 30-35 %o and below 5 %a, in general, result in their reduced growth. In most of the strains maximum nitrogen fixation occured at 30-35 %o. Nitrogen fixation was relatively inactive with little variations among most of the strains growing in salinity 50 %o. The strains of A. beijerinckii required salinity levels ranging from 30 to 35 %o for optimal growth and nitrogen fixation.
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Date 2021-08-23T09:55:50Z
2021-08-23T09:55:50Z
2003
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/59798
 
Language English
 
Relation Not Available