English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/16448
Título

A microcosm approach to assessing the effects of earthworm inoculation and oat cover cropping on CO2 fluxes and biological properties in an amended semiarid soil

AutorPera, Antonio; Caravaca Ballester, María Fuensanta ; Masciandaro, Grazia; Ceccanti, Brunello; Roldán Garrigos, Antonio
Palabras claveDehydrogenase activity
Eisenia foetida
Mineralization potential
Soil respiration
Water soluble carbon
Fecha de publicaciónjun-2005
EditorElsevier
CitaciónChemosphere 59(11): 1625-1631 (2005)
ResumenWe designed a microcosm experiment to assess the influence of inoculation with Eisenia foetida earthworms and the establishment of an Avena sativa cover crop on biological (enzyme activities and labile carbon fractions) soil quality indicators in a soil treated with a composted organic residue, and to determine the contribution of these treatments to carbon dioxide emissions from the soil to the atmosphere of the microcosm. The microcosms were incubated for 53 days under 28 °C/18 °C day/night temperatures. The addition of earthworms and the planting of A. sativa increased dehydrogenase activity of compost amended soil by about 44% after 23 days of incubation. The metabolic potential, calculated as the ratio dehydrogenase activity/water soluble C, was higher in the compost amended soil planted with A. sativa. The highest total amount of CO2–C evolved occurred in the soil treated with composted residue and earthworms (about 40% of the total amount of CO2 evolved came from earthworm activity). The planting of A. sativa increased the decomposition rate constant of organic matter in the amended soil but decreased the potentially mineralizable C pool. In conclusion, the establishment of an A. sativa cover crop and the addition of E. foetida to a degraded agricultural soil treated with composted residue were effective treatments for improving the biological and biochemical quality and the metabolic potential of the soil.
Descripción7 pages, 5 tables, 1 figure.
Versión del editorhttp://dx.doi.org/10.1016/j.chemosphere.2004.12.032
URIhttp://hdl.handle.net/10261/16448
DOI10.1016/j.chemosphere.2004.12.032
ISSN0045-6535
Aparece en las colecciones: (CEBAS) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.