Table 4.

Plant growth indices (dry weight, fresh weight, leaf area index, root length, and shoot length) of 45-day old tomato grown under different concentrations of Cr(VI) contaminated soil (with and without 0.5 mM SA). Each value is the mean of three replicates ± SD

Treatments	Plant dry weight (g)	Plant fresh weight (g)	Leaf area index	Root length (cm)	Shoot length (cm)
Control	0.23 ± 0.02c	3.86 ± 0.25c,d	1.05 ± 0.03d	11.00 ± 1.00a	35.66 ± 1.15a,b
0mgCr(VI) Kg−1soil + 0.5 mM SA	0.32 ± 0.03a	5.58 ± 0.52a	1.72 ± 0.04a	10.66 ± 1.15a	41.33 ± 4.16a
50mgCr(VI) Kg−1soil	0.11 ± 0.01e	3.58 ± 0.18d	0.97 ± 0.01e	6.40 ± 1.15b	31.36 ± 4.60b
50 mg Cr(VI) Kg−1soil + 0.5 mM SA	0.29 ± 0.01b	5.03 ± 0.21b	1.58 ± 0.02b	7.16 ± 0.80b	36.33 ± 3.05a,b
100mgCr(VI) Kg−1soil	0.08 ± 0.01f	2.32 ± 0.28e	0.93 ± 0.05e	4.36 ± 1.18c	15.43 ± 0.93c
100mgCr(VI) Kg−1soil + 0.5 mM SA	0.19 ± 0.01d	4.38 ± 0.23c	1.33 ± 0.04c	5.36 ± 0.56b	20.66 ± 7.23c

The superscripts indicate significant differences among the treatments as per the Duncan test (P ≤ 0.05)