TY - JOUR
T1 - Lime and Compost Promote Plant Re-Colonization of Metal-Polluted, Acidic Soils
AU - Ulriksen, Christopher
AU - Ginocchio, Rosanna
AU - Mench, Michel
AU - Neaman, Alexander
N1 - Funding Information:
This study was funded by the FONDECYT project 1085005 and the Corporación Nacional del Cobre, Chile (CODELCO). The authors wish to thank Eduardo Salgado (Pon-tificia Universidad Católica de Valparaíso) for his helpful comments and the personnel of the Laboratorio de Suelos y Análisis Foliar (Facultad de Agronomía, Pontificia Universidad Católica de Valparaíso) for their help with the laboratory and field work.
PY - 2012/9
Y1 - 2012/9
N2 - The revegetation of soils affected by historic depositions of an industrial complex in Central Chile was studied. The plant re-colonization from the existing soil seed bank and changes in the physico-chemical properties of the soil were evaluated in field plots amended with lime and/or compost. We found that the application of lime and/or compost decreased the Cu2+ ion activity in the soil solution and the exchangeable Cu in the soil, showing an effective Cu immobilization in the topsoil. Whereas lime application had no effect on plant productivity in comparison with the unamended control, the application of compost and lime+compost increased the plant cover and aboveground biomass due to the higher nutrient availability and water-holding capacity of the compost-amended soils. Although the Cu2+ activity and the exchangeable Cu were markedly lower in the amended soils than in the unamended control, the shoot Cu concentrations of Lolium spp. and Eschscholzia californica did not differ between the treatments.
AB - The revegetation of soils affected by historic depositions of an industrial complex in Central Chile was studied. The plant re-colonization from the existing soil seed bank and changes in the physico-chemical properties of the soil were evaluated in field plots amended with lime and/or compost. We found that the application of lime and/or compost decreased the Cu2+ ion activity in the soil solution and the exchangeable Cu in the soil, showing an effective Cu immobilization in the topsoil. Whereas lime application had no effect on plant productivity in comparison with the unamended control, the application of compost and lime+compost increased the plant cover and aboveground biomass due to the higher nutrient availability and water-holding capacity of the compost-amended soils. Although the Cu2+ activity and the exchangeable Cu were markedly lower in the amended soils than in the unamended control, the shoot Cu concentrations of Lolium spp. and Eschscholzia californica did not differ between the treatments.
KW - Puchuncaví Valley
KW - Ventanas industrial complex
KW - bioavailability
KW - in situ immobilization
KW - metal toxicity
KW - phytostabilization
UR - http://www.scopus.com/inward/record.url?scp=84861628005&partnerID=8YFLogxK
U2 - 10.1080/15226514.2011.628716
DO - 10.1080/15226514.2011.628716
M3 - Article
C2 - 22908647
AN - SCOPUS:84861628005
VL - 14
SP - 820
EP - 833
JO - International Journal of Phytoremediation
JF - International Journal of Phytoremediation
SN - 1522-6514
IS - 8
ER -