Parameters

Soil sampling periods

Ngaoundere

Granulometry

Organic matter

Sand

(%)

Limon (%)

Clay

(%)

Carbon (%)

Organic matter (%)

Total N

(%)

Total P

(%)

C/N (%)

pH

Before

73.1 ± 0.1^a

0.05 ± 0.0^a

26.7 ± 0.4^b

5,03 ± 0^a

8.6 ± 0.1^b

12.1 ± 0.3^a

21 ± 2^a

9.8 ± 0.1^b

6.1

After

73.9 ± 0.4^b

0.03 ± 0.0^a

26.0 ± 0.1^a

5.9 ± 02^b

4.7 ± 09^a

14.6 ± 0.1^b

29 ± 0.7^b

6.7 ± 0.9^a

6.2

p-value

0.049

0.18

0.048

0.001

<0.0001

0.0002

0.002

0.004

Sarh

Before

74.0 ± 0.1^a

0.8 ± 0.0^b

25.1 ± 0.1^b

5.7 ± 0.1^a

9.9 ± 0.4^a

18.3 ± 0.1^a

17 ± 0.7^a

2.3 ± 0.1^a

6.5

After

75.4 ± 0.4^b

0.4 ± 0.1^a

24.1 ± 0.5^a

6.3 ± 0.0^b

10.9 ± 0.7^b

18.8 ± 0.2^b

52.2 ± 0.6^b

3.2 ± 0.01

6.7

p-value

0.006

0.003

0.02

0.002

0.016

0.03

<0.0001

0.002