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Effects of biochar amendment on soil aggregates and hydraulic properties

Journal of soil science and plant nutrition, 2013-01, Vol.13 (ahead), p.991-1002 [Peer Reviewed Journal]

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. ;ISSN: 0718-9516 ;EISSN: 0718-9516 ;DOI: 10.4067/S0718-95162013005000078

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  • Title:
    Effects of biochar amendment on soil aggregates and hydraulic properties
  • Author: Ouyang, L ; Wang, F ; Tang, J ; Yu, L ; Zhang, R
  • Subjects: SOIL SCIENCE
  • Is Part Of: Journal of soil science and plant nutrition, 2013-01, Vol.13 (ahead), p.991-1002
  • Description: The aim of this study was to investigate the effects of biochar amendment on soil aggregate formation and stability, and soil hydraulic properties. Biochar produced from dairy manure was added to two different soils (a silty clay and a sandy loam soil) at a ratio of 2% (w/w in dry weight basis). Incubation experiments were conducted within a 90-d period with the soils (the controls) and the soil/biochar mixtures. Compared with the controls, biochar addition significantly enhanced the formation of macroaggregates and slightly increased saturated hydraulic conductivities of the soils. Attributable to the soil structure change, saturated water contents increased and residual water contents decreased with the biochar amendment. These changes with biochar addition greatly affected the shape of soil water retention functions. For both the soil aggregate formation and the change of soil water retention curves, the sandy loam soil was more sensitive than the silty clay soil to the biochar application on all sampling days. The information from this study should be useful to better understand water processes in the soil with biochar application.
  • Publisher: Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
  • Language: English;Portuguese
  • Identifier: ISSN: 0718-9516
    EISSN: 0718-9516
    DOI: 10.4067/S0718-95162013005000078
  • Source: SciELO
    Alma/SFX Local Collection
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