Composition, biomass and activity of microflora, and leaf yields and foliar elemental concentrations of lettuce, after in situ stabilization of an arsenic-contaminated soil
ASCHER, Judith
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
CECCHERINI, M. T.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
LANDI, L.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
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Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
ASCHER, Judith
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
CECCHERINI, M. T.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
LANDI, L.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
PIETRAMELLARA, G.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
NANNIPIERI, P.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
RENELLA, G.
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
< Reduce
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
Language
en
Article de revue
This item was published in
Applied Soil Ecology. 2009, vol. 41, n° 3, p. 351-359
Elsevier
English Abstract
Beringite (B) and zerovalent iron grit (Z), singly and in combination (BZ), were added to a loamy sand soil contaminated by trace elements (Reppel, Belgium), mainly by arsenic (As), to reduce As labile fractions and ...Read more >
Beringite (B) and zerovalent iron grit (Z), singly and in combination (BZ), were added to a loamy sand soil contaminated by trace elements (Reppel, Belgium), mainly by arsenic (As), to reduce As labile fractions and phytoavailability. An uncontaminated sandy soil was studied for comparison. Soils were placed in large lysimeters cultivated with maize and vegetables for 6 years. pH, organic C and total N content increased in amended soils. The Z and BZ treatments reduced the Ca(NO3)2− extractable soil As and As uptake by lettuce. The BZ lettuces had also the lowest foliar Pb, Cd, Zn, and Mn concentrations. All amendments had positive effects on the soil microbial biomass and reduced the qCO2. Glucose mineralization was increased in Z and BZ amended soils. Acid phosphomonoesterase activity was higher in the untreated soil than in the other soils; the alkaline phosphomonoesterase, phosphodiesterase and protease activities were increased by Z and BZ treatments, whereas B amendment had less positive effects. Genetic fingerprinting using Denaturing Gradient Gel Electrophoresis (DGGE) revealed shifts in the composition of eubacterial and fungal communities of the amended soils. Microbial species richness decreased rather than increased in the treated soils, regardless of reduced trace element availability and increased soil microbial biomass and activity.Read less <
Keywords
SOIL MICROBIAL DIVERSITY
CENDRE DE HOUILLE
DIVERSITÉ MICROBIENNEL
ÉLECTROPHORÈSE SUR GEL EN GRADIENT DÉNATURANT
English Keywords
SOIL BIOCHEMICAL ACTIVITY
COAL FLY ASH
SOIL REMEDIATION
ZEROVALENT IRON GRIT
Origin
Hal imported