Skip to main content
SpringerLink
Log in

An independent measurement of the amount of nitrogen fixed by a legume crop

  • Short Communication
  • Published:
Plant and Soil Aims and scope Submit manuscript

Summary

A quantitative estimate is made of the amount of nitrogen symbiotically fixed by a legume crop growing under normal field conditions. The method involves simultaneous determinations of the “AN” values by the legume and a non-nodulating crop, using15N-labelled nitrogen fertilizer. The fertilizer is applied at a low rate to the legume crop to avoid interference with the symbiotic N fixation process, but at a normal rate to the non-nodulating crop.

The amount of symbiotically fixed nitrogen expressed in kg N/ha is calculated by multiplying the difference in A value between the legume and the non-nodulating crop with the % utilization of fertilizer N by the legume crop.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

References

  1. Aleksic, Z.et al., Plant and Soil29, 474–477 (1968).

    CAS  Google Scholar 

  2. Fried, M., J. Agr. Food Chem.2, 271–244 (1954).

    Article  Google Scholar 

  3. Fried, M. and Broeshart, H., The Soil-Plant System in Relation to Inorganic Nutrition, 358 pp. Academic Press, New York and London (1967).

    Google Scholar 

  4. Fried, M. and Dean, L. A., Soil Sci.73, 263–271 (1953).

    Google Scholar 

  5. Legg, J. O. and Stanford, G., Soil Sci. Soc. Am. Proc.31, 215–219 (1967).

    CAS  Google Scholar 

  6. Rice Fertilization Technical Reports Series No.108 (SI/DOC/10/108), IAEA, Vienna. (1970).

  7. Smith, S. J. and Legg, J. O., Soil Sci.112, 373–375 (1971).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Joint FAO/IAEA Division of Atomic Energy in Agriculture, IAEA, Vienna, Austria

    Maurice Fried

  2. Agriculture Unit, IAEA Seibersdorf Laboratory, Vienna, Austria

    Hans Broeshart

Authors
  1. Maurice Fried
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hans Broeshart
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fried, M., Broeshart, H. An independent measurement of the amount of nitrogen fixed by a legume crop. Plant Soil 43, 707–711 (1975). https://doi.org/10.1007/BF01928534

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01928534

Keywords

Search

Navigation