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Amendments promote the development of Lolium Perenne in soils affected by historical copper smelting operations

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Autor Goecke P.
Autor Ginocchio R.
Autor Mench M.
Autor Neaman A.
Fecha Ingreso 2014-04-05T00:19:06Z
Fecha Disponible 2014-04-05T00:19:06Z
Fecha en Repositorio 2014-04-04
dc.identifier 10.1080/15226514.2010.495150
dc.description.abstract The Puchuncaví valley, central Chile, has been exposed to aerial emissions from a copper smelter. Nowadays, soils in the surroundings are sparsely-vegetated, acidic, and metal contaminated, and their remediation is needed to reduce environmental risks. We assessed effectiveness of lime, fly ash, compost, and iron grit as amendments to immobilize Cu in soils and promote plant growth. Amended soils were cultivated with Lolium perenne for 60 days under controlled conditions. Total dissolved Cu and Cu2+ activity in the soil solution, ryegrass biomass, and Cu accumulation in plant tissues were measured. Addition of lime and fly ash decreased Cu concentrations and Cu2+ activity in the soil solution, increased plant biomass, and reduced shoot Cu concentration below 22 mg kg-1 (the phytotoxicity threshold for the species). The most effective amendment with respect to the shoot biomass yield was a combination of lime and compost. Water content of the substrate and the K accumulation were positively correlated with the compost application rate. Compost combined with iron grit decreased dissolved Cu concentrations during the period of highest solubility, i.e. during the first 60 days after the compost application. However, iron grit incorporation into soils amended with lime and compost decreased the shoot biomass of ryegrass. © Taylor & Francis Group, LLC. en_US
dc.source International Journal of Phytoremediation
Link Descarga dc.source.uri
Title dc.title Amendments promote the development of Lolium Perenne in soils affected by historical copper smelting operations en_US
Tipo dc.type Article
dc.description.keywords Lolium; Lolium perenne; calcium derivative; calcium oxide; copper; heavy metal; iron; oxide; article; biomass; bioremediation; chemistry; Chile; drug effect; fly ash; growth, development and aging; industrial waste; Lolium; metabolism; plant; soil; soil pollutant; time; Biodegradation, Environmental; Biomass; Calcium Compounds; Chile; Coal Ash; Copper; Industrial Waste; Iron; Lolium; Metals, Heavy; Oxides; Plant Shoots; Soil; Soil Pollutants; Time Factors en_US

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