Bulletin of the National Research Centre

Table 3 Total content of Cr in soil and plant parts in milligrams per kilogram (kenaf first planting season)

From: Phytoremediation of some heavy metals in contaminated soil

Treatment		First planting season (kenaf)
Soil additive	Foliar spraying	Shoot	Root	Whole plant	Initial soil	Soil after first planting	Remediated fraction	Remediation (%)	BCF shoot	BCF root	BCF whole plant
Sulfur	Humic acid	6.06^b	24.83^b	30.89^b	68.98	36.24^k	32.75^b	47.48^b	0.167^b	0.685^b	0.852^b
Sulfur	Gibberellin	7.54^a	28.66^a	36.2^a		34.00^l	34.98^a	50.71^a	0.222^a	0.843^a	1.065^a
Sulfur	Control	5.62^c	23.42^c	29.04^c		38.11^j	30.88^c	44.77^c	0.147^c	0.615^c	0.762^c
Compost	Humic acid	3.82^e	18.41ⁱ	22.23^f		45.43^g	23.56^f	34.15^f	0.084^e	0.405^g	0.489^f
Compost	Gibberellin	3.09^f	18.61^g	21.70^g		45.62^e	23.37^h	33.88^h	0.068^f	0.408^g	0.476^g
Compost	Control	1.25^l	16.61^l	17.86^l		47.50^a	21.49^l	31.15^l	0.026^k	0.350^k	0.376^k
Control	Humic acid	4.61^d	22.35^d	26.96^d		41.99ⁱ	26.99^d	39.13^d	0.110^d	0.532^d	0.642^d
Control	Gibberellin	2.14ⁱ	21.18^e	23.32^e		43.84^h	25.15^e	36.46^e	0.049^h	0.483^e	0.532^e
Control	Control	1.93^j	18.93^f	20.86ⁱ		45.54^f	23.45^g	34.00^g	0.042ⁱ	0.416^f	0.458^h
Vermiculite	Humic acid	2.87^g	18.46^h	21.33^h		46.71^c	22.28^j	32.30^j	0.061^g	0.395^h	0.457^h
Vermiculite	Gibberellin	2.25^h	17.03^k	19.28^j		47.09^b	21.90^k	31.75^k	0.048^h	0.362^j	0.409^j
Vermiculite	Control	1.67^k	17.59^j	19.26^k		46.46^d	22.53^l	32.66ⁱ	0.036^j	0.379ⁱ	0.415ⁱ
Mean		3.57	20.51	24.08		43.21	25.78	37.37	0.09	0.49	0.58
Minimum		1.25	16.61	17.86		34.00	21.49	31.15	0.026	0.350	0.38
Maximum		7.54	28.66	36.20		47.50	34.98	50.71	0.222	0.843	1.06

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

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