Effects of landfill leachate on growth and nitrogen fixation of two leguminous trees (Acacia confusa, Leucaena leucocephala)

Y. S. G. CHAN, Ming Hung WONG, B. A. WHITTON

Research output: Contribution to journalArticles

20 Citations (Scopus)

Abstract

The influence of landfill leachate on the rhizobia-legume systems of Acacia confusa and Leucaena leucocephala was assayed for five months with a serial dilution (73-0.58%) of leachate which had a high concentration of NH4-N and dissolved organics. Although the acetylene reduction activity (ARA) of the nodules was suppressed by the leachate, the harvestable biomass of inoculated seedlings was higher than rhizobia-free seedlings. The total N content in rhizobia-free seedlings was higher than that for inoculated seedlings, indicating that the legumes accumulated more N from leachate- irrigated soil when they were not inoculated. Their performance was compared with that of two non-legumes (Cinnamomum parthenoxylon, Tristania conferta). These two non-legumes tolerated the highest concentration of leachate for only one month and then started to wilt. The total N contents of their tissue were less than those of the two legumes. Copyright © 1999 Kluwer Academic Publishers.

Original languageEnglish
Pages (from-to)29-40
JournalWater, Air, and Soil Pollution
Volume111
Issue number1-4
DOIs
Publication statusPublished - Apr 1999

Citation

Chan, Y. S. G., Wong, M. H., & Whitton, B. A. (1999). Effects of landfill leachate on growth and nitrogen fixation of two leguminous trees (Acacia confusa, Leucaena leucocephala). Water, Air, and Soil Pollution, 111(1-4), 29-40. doi: 10.1023/A:1005088919668

Keywords

  • Acacia confusa
  • Landfill leachate
  • Legume
  • Leucaena leucocephala
  • Nitrogen addition
  • Nitrogen fixation

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