ZESZYT Nr 11/ 2012 Abstrakty Volume No. 11/2012 Abstracts |
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| 5. Nickel and lead uptake by willows (Salix viminalis L.) - Anna Jama-Rodzeńska, Władysław Nowak Abstract. Phytoextraction of heavy metals by willow can be a promising technology for remediation of low- and mediumcontaminated soil. Willows are especially effective in taking up Cd and Pb from soil and in transporting them to the aboveground parts of plant. Salix is characterized by high capacity for biomass production. Willow cultivated on a soil contaminated with heavy metals produces 13–17 Mg∙ha-1 dry mass of wood per year. The study presents the infl uence of municipal sewage sludge on the content of Ni and Pb in leaves, bark and wood. The main aim of the experiment was to select a clone that accumulates the highest amount of Ni and Pb in the leaves, bark and wood. The research with the seedlings of willow was established in 2003 and with sewage sludge in 2008–2010 in Experimental Station in Wrocław (Pawłowice). The experiment was established using split-plot design with two changeable factors in three replications: the first factor was related to various doses of sewage sludge: 75 and 150 Mg∙ha-1 fresh mass (14.3 Mg∙ha-1 and 28.6 Mg∙ha-1 dry mass) and the second factor was four selected clones of willow (Salix viminalis L). Analysis of variance showed signifi cant influence of various doses of sewage sludge and genetic properties of clones on the content of nickel and lead in plant material. The greatest amount of heavy metals was determined in the leaves, less in the bark and the least in the wood. key words: clones, heavy metals, lead, nickel, sewage sludge, willow |