Plant and Soil

, Volume 28, Issue 1, pp 182–186 | Cite as

A nitrogen-balance study using labelled fertilizer in a gas lysimeter

  • A. E. Martin
  • P. J. Ross
Short Communication
Received:

Summary

A gas lysimeter study showed negligible losses of gaseous N2 or N2O from rhodes grass plants growing in soil fertilized with either (N15H4)2SO4 or KN15O3; isotope recovered from the soil: plant system averaged respectively 100.5% and 98.9%; neither differed significantly from 100%. Small amounts of ammonia were volatilized into lysimeter atmospheres, averaging 0.6% of that applied as labelled ammonium-N and 0.1% of that as nitrate-N. The importance of these findings is discussed in relation to the conduct of N balance studies.

Keywords

Atmosphere Ammonia Plant Physiology Plant System Balance Study 
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Copyright information

© Martinus Nijhoff 1968

Authors and Affiliations

  • A. E. Martin
    • 1
  • P. J. Ross
    • 1
  1. 1.C.S.I.R.O. Division of SoilsCunningham LaboratorySt. Lucia, BrisbaneAustralia

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