Plant and Soil

, Volume 78, Issue 1–2, pp 147–158 | Cite as

Growth, nitrogen fixation and relative efficiency of nitrogenase inAlnus incana grown in different cultivation systems

  • Anita Sellstedt
  • Kerstin Huss-Danell
Article

Summary

Three cultivation systems were compared. In one system the alders were grown hydroponically. In the two other systems the alders were planted in gravel and either given water and nutrients at intervals or the nutrient solution was continuously supplied. Alders continuously supplied with nutrients and water showed a significantly more rapid growth, higher biomass production and higher nitrogen content than did alders given nutrients and water at intervals or alders hydroponically grown. Alders continuously supplied with water and nutrients had a constant RE (relative efficiency of nitrogenase) of about 0.80 throughout the experimental period while alders supplied with water and nutrients at intervals showed a slight decrease in RE at the end of the experimental period. No strict relationship was found between RE and nitrogen content or between RE and plant productivity.

Key words

Alnus incana C2H2-reduction Cultivation systems Frankia H2-evolution in air Hydrogenase Nitrogen content Relative efficiency 

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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1984

Authors and Affiliations

  • Anita Sellstedt
    • 1
  • Kerstin Huss-Danell
    • 1
  1. 1.Department of Plant PhysiologyUniversity of UmeåUmeåSweden

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