Variables

Pedoclimatic zones

Sahelian sandy

Sahelo-sudanian sandy

Sahelo-sudanian loamy sand

Sudanian sandy loam

Bulk density (g/cm3)

1.8 (0.02) a

1.8 (0.1) a

1.8 (0.1) a

1.9 (0.1) a

Soil moisture (%)

0.46 (0.6) a

0.32 (0.2) a

1.84 (2.6) a

6.52 (2.2) b

pH

7.4 (0.6) a

6.3 (0.5) b

6.1 (0.4) b

5.7 (0.5) c

Total C (g/kg)

0.8 (0.3) a

0.7 (0.3) a

1.1 (0.6) a

2.2 (0.7) b

Total N (g/kg)

0.05 (0.06) a

0.06 (0.05) ab

0.06 (0.05) ab

0.14 (0.05) b

N_min (µg/g)

1.4 (0.2) a

1.8 (0.2) a

2.7 (1.7) a

7.04 (2.8) b

C/N ratio

15.8 (1.9) a

14.6 (7.7) a

36 (17.9) a

16.8 (2.2) a

CEC (cmole/kg)

1.9 (0.3) a

1.8 (0.7) a

3.3 (2.5) a

2.7 (0.9) a