Malek Hossein Shahriari

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 Populs nigra (p < 0.01).