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Título: | Addition of microbially-treated sugar beet residue and a native bacterium increases structural stability in heavy metal-contaminated Mediterranean soils |
Autor: | Carrasco Blázquez, Lucía CSIC; Caravaca Ballester, María Fuensanta CSIC ORCID; Azcón González de Aguilar, Rosario CSIC ORCID ; Kohler, Josef; Roldán Garrigos, Antonio CSIC ORCID | Fecha de publicación: | 2009 | Editor: | Elsevier | Citación: | Science of The Total Environment 407(21): 5448-5454 (2009) | Resumen: | A mesocosm experiment was conducted to investigate the effect of the addition of Aspergillus niger-treated sugar beet waste, in the presence of rock phosphate, and inoculation with a native, metal-tolerant bacterium, Bacillus thuringiensis, on the stabilisation of soil aggregates of two mine tailings, with differing pH values, from a semiarid Mediterranean area and on the stimulation of growth of Piptatherum miliaceum. Bacterium combined with organic amendment enhanced structural stability (38% in acidic soil and 106% in neutral soil compared with their corresponding controls). Only the organic amendment increased pH, electrical conductivity, water-soluble C, water-soluble carbohydrates and plant growth, in both soils. While in neutral soil both organic amendment and bacterium increased dehydrogenase activity, only organic amendment had a significant effect in acidic soil. This study demonstrates that the use of P. miliaceum in combination with organic amendment and bacterium is a suitable tool for the stabilisation of the soil structure of degraded mine tailings, although its effectiveness is dependent on soil pH. | Versión del editor: | https://doi.org/10.1016/j.scitotenv.2009.06.021 | URI: | http://hdl.handle.net/10261/278350 | DOI: | 10.1016/j.scitotenv.2009.06.021 | ISSN: | 0048-9697 |
Aparece en las colecciones: | (EEZ) Artículos (CEBAS) Artículos |
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