Title: Induced phytoextraction: effect of amendment on phytoextraction of cadmium by poplar rooted cuttings (Populus nigra L. and Populus alba L.)

Authors: Seyed Mahdi Alizadeh; Ghavamudin Zahedi-Amiri; Malek hossein Shahriari; Mostafa Shirmardi

Addresses: Department of Horticulture, Faculty of Agriculture, Ramin Agriculture and Natural Resources University, P.O. Box 6341733877, Mollasani, Ahvaz, Iran ' Department of Forestry, Faculty of Natural Resources, University of Tehran, P.O. Box 4314, Karaj, 315877787, Iran ' Department of Horticulture, Faculty of Agriculture and Natural Resources, Persian Gulf University, P.O. Box: 75615/415, Borazjan, Bushehr, Iran ' Department of Soil Science, Faculty of Agricultural Engineering and Technology, University of Tehran, 4111, Karaj, 315877871, Iran

Abstract: To determine the effect of amendments on cadmium uptake by one-year old poplar rooted cuttings, a pot experiment was carried out. Pots were filled with three substrates mentioned below: 1) loam soil, cocopeat and perlit were mixed in 1:0.5:0.5 (v/v/v) ratio; 2) loam soil and cocopeat were mixed in 1:1 (v/v) ratio (P50%); 3) loam soil. Four treatments of Cd supply including 0 mg kg⁻¹ (no external Cd), 50, 100 and 150 mg kg⁻¹ (were spiked as CdCl₂·2.5H₂O) were organised. Results showed that higher biomass productions in substrates A and B compare to substrate C, led to an increase total Cd uptake two times more than that in substrate C, at 150 mg kg⁻¹ concentration by Populus alba (p < 0.01). Meanwhile maximum uptake occurred in substrate A at 150 mg kg⁻¹ concentration by Populus nigra (p < 0.01).

Keywords: substrate; loam soil; cocopeat; perlit; uptake; biomass; environmental pollution; phytoextraction; cadmium removal; poplar root cuttings; Populus nigra L; Populus alba L; soil contamination; heavy metals.

DOI: 10.1504/IJEWM.2014.058805

International Journal of Environment and Waste Management, 2014 Vol.13 No.1, pp.90 - 103

Received: 07 Jul 2012
Accepted: 01 Jun 2013
Published online: 13 May 2014 *

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