what is biological fixation how is it different from nitrification
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Nitrification is the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates - carried out in soil by the action of nitrifying bacteria on decaying organic matter. ... Rhizobium bacteria in the root nodules of legumes fix atmospheric nitrogen.
Biological nitrogen fixation (BNF) is the process whereby atmospheric nitrogen (N=N) is reduced to ammonia in the presence of nitrogenase. Nitrogenase is a biological catalyst found naturally only in certain microorganisms such as the symbiotic Rhizobium and Frankia, or the free-living Azospirillum and Azotobacter.
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Nitrification is the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates - carried out in soil by the action of nitrifying bacteria on decaying organic matter. ... Rhizobium bacteria in the root nodules of legumes fix atmospheric nitrogen.
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