Abstract
Three different types of low cost soil amendments, namely, EDTA, elemental S and N-fertilizer, were investigated with Vetiver grass, Vetiveria zizanioides (Linn.) Nash growing under highly mixed Cd–Pb contamination conditions. A significant increase (p < 0.05) in Cd and Pb accumulation were recorded in the shoots of all EDTA and N-fertilizer assisted treatments. The accumulation of Cd in 25 mmol EDTA/kg soil and 300 mmol N/kg soil showed relatively higher translocation factor (1.72 and 2.15) and percentage metal efficacy (63.25 % and 68.22 %), respectively, compared to other treatments. However, it was observed that the increased application of elemental S may inhibit the availability of Pb translocation from soil-to-root and root-to-shoot. The study suggests that viable application of 25 mmol EDTA/kg, 300 mmol N/kg and 20 mmol S/kg soil have the potential to be used for soil amendment with Vetiver grass growing under contaminated mixed Cd–Pb soil conditions.
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This research work is made possible through funding provided by the University of Malaya, Kuala Lumpur (PG006-2013A and RK001-2016) and the Malaysia Toray Science Foundation (STRG15/G251) grants.
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Ng, C.C., Boyce, A.N., Rahman, M.M. et al. Effects of Different Soil Amendments on Mixed Heavy Metals Contamination in Vetiver Grass. Bull Environ Contam Toxicol 97, 695–701 (2016). https://doi.org/10.1007/s00128-016-1921-5
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DOI: https://doi.org/10.1007/s00128-016-1921-5