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An External Effect of Inorganic Nitrogen in Root Nodulation

Nature volume 198, pages 303–304 (1963)Cite this article

Abstract

THE inhibition of nodulation by combined nitrogen was first reported almost a century ago. The results of most studies lend support to a theory proposing that the effect of combined nitrogen is wrought within the plant, the end-result being determined by the amount of carbohydrate available for root and nodule growth. This theory, however, does not explain the different effects obtained when different nitrogen compounds were used at the same nitrogen-level1,2. Also some experiments3–6 have suggested that there was a local (external) effect of combined nitrogen in inhibiting nodulation.

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References

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Author notes

  1. J. W. TANNER

    Present address: Department of Crop Science, Ontario Agricultural College, Guelph, Ontario, Canada

Authors and Affiliations

  1. Department of Agronomy, Iowa State University, Ames

    J. W. TANNER & I. C. ANDERSON

Authors
  1. J. W. TANNER
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  2. I. C. ANDERSON
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TANNER, J., ANDERSON, I. An External Effect of Inorganic Nitrogen in Root Nodulation. Nature 198, 303–304 (1963). https://doi.org/10.1038/198303b0

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