Phytoremediation of some heavy metals in contaminated soil

Bulletin of the National Research Centre

Table 6 Total content of Cd in soil and plant parts in milligrams per kilogram (flax second planting season)

Treatment		Second planting season (flax)
Soil additive	Foliar spraying	Shoot	Root	Whole plant	Soil after second planting	Remediated fraction	Remediation (%)	Double season phytoremediation (%)	BCF shoot	BCF root	BCF whole plant
Sulfur	Humic acid	0.25^b	0.32^b	0.57^b	9.87^j	1.10^h	10.03^f	23.01^b	0.025^b	0.032^b	0.058^b
Sulfur	Gibberellin	0.28^a	0.33^a	0.61^a	9.82^k	1.26^a	11.37^a	23.40^a	0.029^a	0.034^a	0.062^a
Sulfur	Control	0.24^c	0.29^c	0.53^c	9.89ⁱ	1.23^b	11.06^b	22.85^c	0.024^c	0.029^c	0.054^c
Compost	Humic acid	0.14^g	0.23^f	0.37^g	10.37^e	1.08ⁱ	9.43^k	19.11^h	0.014^g	0.022^e	0.036^f
Compost	Gibberellin	0.14^g	0.23^f	0.37^g	10.38^d	1.10^h	9.58^j	19.03^g	0.013^g	0.022^e	0.036^f
Compost	Control	0.13^h	0.20^h	0.33^h	10.39^c	1.11^g	9.65^h	18.95ⁱ	0.013^g	0.019^f	0.032^g
Control	Humic acid	0.18^e	0.26^d	0.44^e	10.14^h	1.14^e	10.11^e	20.90^d	0.018^e	0.026^d	0.043^d
Control	Gibberellin	0.19^d	0.25^e	0.45^d	10.18^g	1.11^g	9.83^g	20.59^e	0.019^d	0.025^d	0.044^d
Control	Control	0.17^f	0.22^g	0.39^f	10.22^f	1.06^j	9.40^l	20.28^f	0.017^f	0.022^e	0.038^e
Vermiculite	Humic acid	0.11ⁱ	0.14ⁱ	0.25ⁱ	10.52^a	1.12^f	9.62ⁱ	17.94^k	0.010^h	0.013^g	0.024^h
Vermiculite	Gibberellin	0.10^j	0.14ⁱ	0.24^j	10.51^b	1.19^d	10.17^d	18.02^j	0.010^h	0.013^g	0.023^h
Vermiculite	Control	0.10^j	0.12^j	0.22^k	10.52^a	1.21^c	10.32^c	17.94^k	0.010^h	0.011^h	0.021ⁱ
Mean		0.17	0.23	0.40	10.23	1.14	10.05	20.17	0.017	0.022	0.039
Minimum		0.10	0.12	0.22	9.82	1.06	9.40	17.94	0.010	0.011	0.021
Maximum		0.28	0.33	0.61	10.52	1.26	11.37	23.40	0.029	0.034	0.062

Values with different letters in a column are significantly different at the 0.05 level
Italics, calculated mean, minimum, and maximum