Failure of Azotobacter Vinelandii to Fix Nitrogen in Soil

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It was found that Azotobacter vinelandii grown in a dialyzed soil medium did not fix nitrogen and had a much lower rate of respiration than when grown in Burk's nitrogen-free medium. When para-hydroxybenzoic acid served as the added oxidizable organic carbon source in dialyzed soil medium, the azotobacter grown in it were found to be unable to fix nitrogen. On the other hand, A. vinelandii fixed nitrogen when grown in soil supplemented with glucose. It was concluded that natural conditions in the soil are not conducive to nitrogen fixation by A. vinelandii.

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iv, 44 leaves

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Taeed-Kashani, Taraneh August 1983.

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  • Taeed-Kashani, Taraneh

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It was found that Azotobacter vinelandii grown in a dialyzed soil medium did not fix nitrogen and had a much lower rate of respiration than when grown in Burk's nitrogen-free medium. When para-hydroxybenzoic acid served as the added oxidizable organic carbon source in dialyzed soil medium, the azotobacter grown in it were found to be unable to fix nitrogen. On the other hand, A. vinelandii fixed nitrogen when grown in soil supplemented with glucose. It was concluded that natural conditions in the soil are not conducive to nitrogen fixation by A. vinelandii.

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iv, 44 leaves

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  • August 1983

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  • Dec. 12, 2016, 10:21 a.m.

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Taeed-Kashani, Taraneh. Failure of Azotobacter Vinelandii to Fix Nitrogen in Soil, thesis, August 1983; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc504156/: accessed August 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .