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.
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Chan, Y.S.G., Wong, M.H. & Whitton, B.A. Effects of Landfill Leachate on Growth and Nitrogen Fixation of two Leguminous Trees (Acacia Confusa, Leucaena Leucocephala. Water, Air, & Soil Pollution 111, 29–40 (1999). https://doi.org/10.1023/A:1005088919668
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DOI: https://doi.org/10.1023/A:1005088919668