Table 3 Soil cd chemical fractions (mg kg⁻¹) as affected by biochars and soil textural classes.

Cd-WsEx

H

12.55 k

11.26 m

11.48 lm

12.15 kl

11.39 m

9.99 n

11.31 m

11.45 C

M

18.10 e

15.35 i

15.48 hi

17.08 f

16.52 fg

13.77 j

16.14 gh

16.06 B

L

20.09 b

19.92 b

19.07 cd

19.50 bc

21.08 a

17.09 f

18.56 de

19.33 A

Main effects

16.91 A

15.51 C

15.34 C

16.25 B

16.33 B

13.62 D

15.33 C

Cd-FeMnOx

H

15.27 b-d

15.94 b

14.19 e-g

14.62 d-f

15.15 cd

16.86 a

14.82 de

15.26 A

M

12.53 ij

12.99 hi

14.82 de

12.84 h-j

13.93 fg

15.81 bc

13.47 gh

13.77 B

L

10.80 l

9.38 m

11.60 k

12.11 jk

12.07 jk

13.99 fg

12.06 jk

11.72 C

Main effects

12.87 D

12.77 D

13.54 BC

13.19 CD

13.72 B

15.55 A

13.45 BC

Cd-OM

H

2.17 d-g

2.62 bc

2.46 c-e

3.01 ab

2.52 cd

2.97 ab

3.20 a

2.71 A

M

2.03 e-h

1.99 f-h

2.22 c-g

1.73 h

2.24 c-g

3.00 ab

2.38 c-f

2.30 B

L

1.90 gh

1.62 h

1.69 h

1.71 h

1.88 gh

2.04 e-h

1.81 gh

1.81 C

Main effects

2.04 C

2.08 C

2.12 C

2.15 C

2.21 BC

2.67 A

2.46 AB

Cd-Res

H

12.93 de

14.31 bc

14.85 b

13.68 bd

14.33 bc

17.64 a

18.48 a

15.19 A

M

8.91 gh

10.56 f

10.86 f

11.16 f

10.83 f

13.77 bc

11.64 ef

11.10 B

L

11.79 ef

7.86 h

8.46 gh

8.04 gh

9.18 g

13.20 cd

8.37 gh

9.55 C

Main effects

11.21 C

10.91 C

11.39 C

10.96 C

11.48 C

14.87 A

12.83 B