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Plant and Soil

, Volume 91, Issue 1, pp 43–49 | Cite as

Nitrogen in shoot litter, root litter and root exudates from nitrogen-fixingAlnus incana

  • Kerstin Huss-Danell
Article

Summary

A pot experiment withAlnus incana (L.) Moench growing in sand was set up to compare the amounts of nitrogen released from plants shoot litter with that released below ground as root litter and/or root exudation. No nitrogen fixation by free-living microorganisms was found in the sand and the increased nitrogen content of the plant + soil system was therefore due to nitrogen fixation byFrankia in the alder root-nodules. Most of the nitrogen released from the plants was in the nitrogen-rich leaf and other shoot litter. Only small amounts of nitrogen were found in the drainage water from the pots and were recorded as increased nitrogen content of the sand.

Key words

Alnus incana Frankia Leaf litter Nitrogen fertilization Nitrogen fixation Root exudation Root litter Shoot litter 

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Copyright information

© Martinus Nijhoff Publishers 1986

Authors and Affiliations

  • Kerstin Huss-Danell
    • 1
  1. 1.Department of Plant PhysiologyUniversity of Ume⇘UmeaSweden

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