JONES, Sarah; BARDOS, R. Paul; KIDD, Petra S.; MENCH, Michel; DE LEIJ, Frans; HUTCHINGS, Tony; CUNDY, Andrew; JOYCE, Chris; SOJA, Gerhard; FRIESL-HANL, Wolfgang; HERZIG, Rolf; MENGER, Pierre

doi:10.1016/j.jenvman.2016.01.024

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JONES, Sarah
University of Reading [UOR]

BARDOS, R. Paul
University of Reading [UOR]

KIDD, Petra S.
Instituto de Investigaciones Agrobiológicas de Galicia (IIAG)

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Ce document a été publié dans

Journal of Environmental Management. 2016, vol. 171, p. 101-112

Elsevier

Résumé en anglais

Contamination of soil with trace elements, such as Cu, is an important risk management issue. A pot experiment was conducted to determine the effects of three biochars and compost on plant growth and the immobilisation of Cu in a contaminated soil from a site formerly used for wood preservation. To assess Cu mobility, amended soils were analysed using leaching tests pre- and post-incubation, and post-growth. Amended and unamended soils were planted with sunflower, and the resulting plant material was assessed for yield and Cu concentration. All amendments significantly reduced leachable Cu compared to the unamended soil, however, the greatest reductions in leachable Cu were associated with the higher biochar application rate. The greatest improvements in plant yields were obtained with the higher application rate of biochar in combination with compost. The results suggest joint biochar and compost amendment reduces Cu mobility and can support biomass production on Cu-contaminated soils.< Réduire

Mots clés

plant trials

in situ stabilisation

Mots clés en anglais

organic amendments

sunflower

leaching tests

trace elements