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Soil Science Society of America Journal Abstract -

The Significance of Nonsymbiotic Nitrogen Fixation1


This article in SSSAJ

  1. Vol. 29 No. 2, p. 223
    Received: Oct 5, 1964
    Accepted: Dec 18, 1964

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  1. R. Knowles
  1. Dep. of Agr. Bact., Macdonald College of McGill University, Macdonald College P.O., Quebec, Can.



Estimates of the rate of nonsymbiotic fixation of N215 were calculated on an area basis for several natural woodland and cultivated field soils. Results supported the conclusion that much of the nitrogen gain in the field may be associated with periods or regions of anaerobiosis, or with localized available energy sources. There was agreement with many earlier conclusions drawn from nitrogen balance experiments.

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