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Quintela-Sabaris, C; Marchand, L; Kidd, PS; Friesl-Hanl, W; Puschenreiter, M; Kumpiene, J; Muller, I; Neu, S; Janssen, J; Vangronsveld, J; Dimitriou, I; Siebielec, G; Galazka, R; Bert, V; Herzig, R; Cundy, AB; Oustriere, N; Kolbas, A; Galland, W; Mench, M.
(2017): Assessing phytotoxicity of trace element-contaminated soils phytomanaged with gentle remediation options at ten European field trials
SCI TOTAL ENVIRON. 2017; 599: 1388-1398. FullText FullText_BOKU

Gentle remediation options (GRO), i.e. in situ stabilisation, (aided) phytoextraction and (aided) phytostabilisation, were implemented at ten European sites contaminated with trace elements (TE) from various anthropogenic sources: mining, atmospheric fallout, landfill leachates, wood preservatives, dredged-sediments, and dumped wastes. To assess the performance of the GRO options, topsoil was collected from each field trial, potted, and cultivated with lettuce (Lactuca sativa L) for 48 days. Shoot dry weight (DW) yield, photosynthesis efficiency and major element and TE concentrations in the soil pore water and lettuce shoots were measured. GRO implementation had a limited effect on TE concentrations in the soil pore water, although use of multivariate Co-inertia Analysis revealed a clear amelioration effect in phytomanaged soils. Phytomanagement increased shoot DW yield at all industrial and mine sites, whereas in agricultural soils improvements were produced in one out of five sites. Photosynthesis efficiency was less sensitive than changes in shoot biomass and did not discriminate changes in soil conditions. Based on lettuce shoot DW yield, compost amendment followed by phytoextraction yielded better results than phytostabilisation; moreover shoot ionome data proved that, depending on initial soil conditions, recurrent compost application may be required to maintain crop production with common shoot nutrient concentrations. (C) 2017 Elsevier B.V. All rights reserved.
Authors BOKU Wien:
Friesl-Hanl Wolfgang
Puschenreiter Markus

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