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Contribution of macroporosity to water flux of a soil under different tillage systems Rev. Bras. Ciênc. Solo
Soracco,Carlos Germán; Lozano,Luis Alberto; Balbuena,Roberto; Ressia,Juan Manuel; Filgueira,Roberto Raúl.
In view of the importance of the macroporosity for the water transport properties of soils, its quantitative assessment is a challenging task. Measurements of hydraulic conductivity (K) at different soil water tensions and the quantification of water-conducting macropores (θM) of a soil under different tillage systems could help understand the effects on the soil porous system and related hydraulic properties. The purpose of this study was to assess the effects of Conventional Tillage (CT), Chisel Plow (CP) and No Tillage (NT) on θM and on K; and to quantify the contribution of macroporosity to total water flux in a loam soil. A tension disc infiltrometer was used at two soil water pressure heads (-5 cm, and 0) to infer θM and K, during fallow....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tension disc infiltrometer; No tillage; Chisel plow; Conventional tillage; Effective porosity.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400009
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