Memorias de investigación
Artículos en revistas:
Phytostabilization of metals in mine soils using Brassica juncea in combination with organic amendments
Año:2014
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
Background and aims The high metal bioavailability and the poor conditions of mine soils yield a low plant biomass, limiting the application of phytoremediation techniques. A greenhouse experiment was performed to evaluate the effects of organic amendments on metal stabilization and the potential of Brassica juncea L. for phytostabilization in mine soils. Methods Plants were grown in pots filled with soils collected from two mine sites located in Central Spain mixed with 0, 30 and 60 tha?1 of pine bark compost and horse- and sheep-manure compost. Plant biomass and metal concentrations in roots and shoots were measured. Metal bioavailability was assessed using a rhizosphere-based method (rhizo), which consists of a mixture of low-molecular-weight organic acids to simulate root exudates. Results Manure reduced metal concentrations in shoots (10?50 % reduction of Cu and 40?80 % of Zn in comparison with non-amended soils), bioconcentration factor (10?50 % of Cu and 40?80 % of Zn) and metal bioavailability in soil (40?50 % of Cu and 10?30 % of Zn) due to the high pH and the contribution of organic matter. Manure improved soil fertility and was also able to increase plant biomass (5?20 times in shoots and 3?30 times in roots), which resulted in a greater amount of metals removed from soil and accumulated in roots (increase of 2?7 times of Cu and Zn). Plants grown in pine bark treatments and in non-amended soils showed a limited biomass and high metal concentrations in shoots. Conclusions The addition of manure could be effective for the stabilization of metals and for enhancing the phytostabilization ability of B. juncea in mine soils. In this study, this species resulted to be a potential candidate for phytostabilization in combination with manure, differing from previous results, in which B. juncea had been recognized as a phytoextraction plant.
Internacional
Si
JCR del ISI
Si
Título de la revista
Plant And Soil
ISSN
0032-079X
Factor de impacto JCR
2,638
Información de impacto
Datos JCR del año 2012
Volumen
377
DOI
10.1007/s11104-013-1629-9
Número de revista
1-2
Desde la página
97
Hasta la página
109
Mes
ABRIL
Ranking
ISI Journal Citation Reports © Ranking: 2012: 4/34 (Soil Science); 9/78 (Agronomy), 45/197 (Plant Sciences)
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Producción Agraria