Table 1 Average soil physical and chemical characteristics (± SE).

Bambui

3.93 ± 0.01^d

0.97 ± 0.05^f

0.37 ± 0.02^f

0.26 ± 0.01^d

2.44 ± 0.05^d

6.96 ± 0.03^a

0.44 ± 0.00^a

54.2 ± 0.39^c

18.3 ± 0.36^e

27.5 ± 0.14^a

Gamboula

4.11 ± 0.03^d

1.21 ± 0.08^ef

0.74 ± 0.04^e

0.14 ± 0.00^d

8.10 ± 0.4^d

2.32 ± 0.04^e

0.14 ± 0.00 ^fg

54.3 ± 0.41^c

36.6 ± 0.45^b

9.17 ± 0.25^e

Ekona

4.91 ± 0.05^bc

9.64 ± 0.23^c

3.94 ± 0.08^b

1.77 ± 0.07^a

61.3 ± 2.67^a

3.50 ± 0.04^d

0.35 ± 0.00^c

48.6 ± 0.69^d

27.3 ± 0.54^c

24.1 ± 0.41^c

Foumbot

6.06 ± 0.02^a

15.4 ± 0.18^a

5.21 ± 0.12^a

1.54 ± 0.05^b

20.9 ± 0.7^bc

5.74 ± 0.03^b

0.40 ± 0.01^b

63.6 ± 0.36^b

11.2 ± 0.34f.

25.2 ± 0.23^b

Mbalmayo

4.70 ± 0.05^c

3.01 ± 0.21^def

1.27 ± 0.07^d

0.16 ± 0.01^d

10.1 ± 1.7 ^cd

1.73 ± 0.2f.

0.15 ± 0.00f.

61.30 ± 0.85^b

26.0 ± 0.80 ^cd

12.7 ± 0.22^d

Meiganga

5.32 ± 0.08^b

11.9 ± 1.07^b

2.51 ± 0.06^c

0.55 ± 0.02^c

71.4 ± 6.6^a

5.15 ± 0.05^c

0.30 ± 0.00^d

53.9 ± 0.68^c

23.5 ± 0.41^d

22.7 ± 0.37^bc

Meyomessala

4.84 ± 0.04^c

3.77 ± 0.57^d

0.90 ± 0.11^e

0.18 ± 0.02^d

29.2 ± 2.3^b

1.65 ± 0.05f.

0.12 ± 0.00 ^g

81.7 ± 0.53^a

12.1 ± 0.42^f

6.23 ± 0.24^f

Njombe

3.93 ± 0.06^d

2.50 ± 0.33^de

0.88 ± 0.10^de

0.19 ± 0.03^d

8.75 ± 1.7 ^cd

2.33 ± 0.15^e

0.18 ± 0.01^e

45.6 ± 2.23^d

43.7 ± 2.90^a

10.6 ± 1.41^e

Mean

4.72

6.06

1.98

0.60

26.5

3.67

0.26

57.9

24.8

17.3

SE

0.26

1.94

0.62

0.24

9.23

0.72

0.05

3.99

4.00

2.98

CV

15.6

90.8

88.7

111.4

98.4

55.3

49.7

19.5

45.6

48.8