Table 4 Translocation factor (TF), accumulation factor (AF) and tolerance index (TI) of lead, zinc and copper metals in water spinach and okra as influenced by different treatments of control, Pb (50 mg Pb/kg soil), Zn (50 mg Zn/kg soil) and Cu (50 mg Cu/kg soil)

0.76 d

4.61 a

0.83 bc

4.17 a

0.34 c

1.28 c

1.09 a

0.55 d

0.88 bc

3.49 b

0.65 a

3.10 b

0.764 a

0.87 c

3.06 c

0.98 b

0.71 d

0.36 c

7.65 a

0.591 ab

1.01 b

3.18 b

1.43 a

2.29 c

0.54 b

0.70 d

0.376 ab

0.84 b

4.06 b

1.72 a

2.68 c

0.24 bc

1.88 c

0.23 d

1.61 d

1.51 bc

3.20 a

0.35 a

2.28 a

0.860 a

2.28 a

4.97 a

0.56 d

0.19 d

0.20 d

2.11 ab

0.786 ab

0.76 c

4.26 c

1.59 b

3.00 b

0.26 b

0.20 d

0.555 ab