Occurrence Of Nitrogen Fixing Bacteria In Turmeric Rhizosphere

Authors: EZIDI LOVELINE | Natural & Applied Sciences Microbiology Projects 43 pages 8,858 words

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ABSTRACT

The soil sample used in this study was collected from the rhizosphere of turmeric plant dated National Root Crop Research Institute analysis. Nitrogen-fixing microorganisms were iSOlr onas by spread-plate technique on the solid medium. The study revealed the presence of NitrOSOrn;ieCted europea and Azotobacter species. The total Hetertrophic bacterial load of soil samples coPe total from rhizosphere of turmeric plant showed range from 1.08 x 108 to 7.8 x 10 whi1 isolates nitrifying bacteria count ranged from 1.9 x iO4to 4.8 x iO4. Shows the distribution Of obacter from soil samples. Nitrosomonas europea had the frequency of 2 (33.3%) while AZObj1jty to species had 4 (66.7). Nitrogen fixing rhizobia have been reported to vary in their, symbiont compete, infect and fix nitrogen in their hosts due various factors such as host, extremes, compatibility, soil salinity; soil pH, mineral and heavy metal toxicity, temperature inadequate or extreme soil moisture and nutrient deficit.

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