Agroforestry Systems

, Volume 4, Issue 1, pp 33–37 | Cite as

C2H2-reduction byErythrina poeppigiana in a Costa Rican coffee plantation

  • P. Lindblad
  • R. Russo


Acetylene reduction activity by root nodules of the legumeErythrina poeppigiana, growing as shade tree in a Costa Rican coffee plantation, was estimated. The mean activity found was 15.7 nmole C2H4 · mg (dry weight)−1 · h−1. Root nodules collected at different distances from theErythrina stem showed the same activity per dry weight unit. However, as the biomass of the nodules was highest near the stem, was the acetylene reduction activity (expressed per soil volume) maximal near theErythrina stem and declined with distance.

Key words

coffee plantation C2H2-reduction Erythrina 


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1986

Authors and Affiliations

  • P. Lindblad
    • 1
  • R. Russo
    • 2
  1. 1.Institute of Physiological BotanyUniversity of UppsalaUppsalaSweden
  2. 2.CATIE (=Centro Agronomico Tropical de Investigacion y Enseñanza)Costa RicaCentral America

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