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Título

Soil aggregate stability and organic matter in clay and fine silt fractions in urban refuse-amended semiarid soils

AutorCaravaca Ballester, María Fuensanta ; Lax, Antonio; Albaladejo Montoro, Juan
Palabras claveWater erosion
Land use changes
High descomposition rates
Fecha de publicación2001
EditorSoil Science Society of America
CitaciónSoil Science Society of America Journal 65:1235-1238 (2001)
ResumenOrganic refuse application to soil may improve soil structure and thus soil quality and productivity. Two semiarid, structureless soils with <10 g kg-1 organic C (OC), differing in clay mineralogy, were amended annually at rates of 30 g kg-1 fresh or composted refuse to a total of 60 g kg-1 in a greenhouse experiment lasting 2 yr. Fresh refuse additions significantly increased the soil aggregate stability in water by 17%. Composted refuse application only increased aggregate stability in the beidellitic clay-dominated soil (13%). In both soils, the greatest increase in OC and humin following refuse additions occurred in the fine silt fraction, which contained less decomposed organic matter than the clay fraction. In the beidellitic clay soil, this increase in OC was larger than in the illitic clay soil. The aggregate stability of the beidellitic clay soil was significantly correlated with OC and humin of fine silt fraction.
DescripciónDivision S-6 — Notes
Versión del editorhttp://soil.scijournals.org/cgi/content/full/65/4/1235
URIhttp://hdl.handle.net/10261/16606
ISSN0361-5995
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