Plant and Soil

, Volume 62, Issue 2, pp 331–336 | Cite as

A further extension of the method for independently measuring the amount of nitrogen fixed by a legume crop

  • Maurice Fried
  • Hans Broeshart
Short Communications


The combination of using15N for determining the amount of nitrogen fixed by a legume crop in field experiments and the labelling of only one treatment at a time in each treatment combination is shown to be conceptually and experimentally valid for determining the effect of cultural practices on the amount of nitrogen fixed by a legume crop.

Key words

Legumes Nitrogen fixation 15


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1981

Authors and Affiliations

  • Maurice Fried
    • 1
  • Hans Broeshart
    • 2
  1. 1.Joint FAO/IAEA Division of Atomic Energy in AgricultureIAEAViennaAustria
  2. 2.Agriculture UnitIAEA Seibersdorf LaboratoryViennaAustria

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