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Título

Application of Two Organic Wastes in a Soil Polluted by Lead : Effects on the Soil Enzymatic Activities

AutorTejada, M.; Hernández Fernández, María Teresa; García Izquierdo, Carlos
Palabras claveCCGC
Crushed cotton gin compost
PM
Poultry manure
Fecha de publicación9-ene-2007
EditorAmerican Society of Agronomy
Crop Science Society of America
Soil Science Society of America
CitaciónJournal of Environmental Quality 36 :216-225 (2007)
ResumenThe effects of adding a crushed cotton gin compost (CCGC) and a poultry manure (PM) on the enzymatic activities of a Typic Xerofluvent soil polluted with Pb were studied in the laboratory. Three hundred grams of sieved soil (<2 mm) were mixed with PM at a rate of 10% or CCGC at a rate of 17.2%, applying to the soil the same amount of organic matter with each organic amendment. Urease, protease-BBA, ß-glucosidase, alkaline phosphatase, and arylsulfatase activities were measured at four different incubation times (1, 7, 15, and 45 d) in soils containing seven concentrations (100, 250, 500, 1000, 2500, 5000, and 8000 mg kg–1) of Pb, and in the same soils amended with CCGC and PM. In all treatments and incubation times, the inhibition percentage of soil enzyme activities by Pb was lower in soils amended with the PM and CCGC than in nonamended soils, and it differed with the organic amendment. In this respect, the in the 8000 mg Pb kg–1 treatment at the end of the incubation period, the protease-BBA activity inhibition percentage was lower (14.7 and 33.9% lower, respectively) in CCGC- than in PM-amended soils. Since the adsorption capacity of Pb was higher in CCGC- than the PM-amended soils, the addition of organic wastes with higher humic acid concentration is more beneficial for remediation of soils polluted with Pb
Versión del editorhttp://dx.doi.org/10.2134/jeq2006.0252RA
URIhttp://hdl.handle.net/10261/16011
DOI10.2134/jeq2006.0252RA
ISSN0047-2425
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