Effect of Biochar on Soil Properties, Soil Loss, and Cocoyam Yield on a Tropical Sandy Loam Alfisol
Table 3
Effect of biochar on soil chemical properties in 2017 and 2018.
Year
Biochar rate
pH (water)
OM (%)
N (%)
P (mg kg−1)
K (cmol kg−1)
Ca (cmol kg−1))
Mg (cmol kg−1))
CEC (cmol kg−1))
2017
0
5.61c
1.78d
0.16b
8.6c
0.09c
1.69d
0.35c
1.1d
10
5.72bc
2.52c
0.17ab
10.1b
0.12b
1.72c
0.38b
3.4c
20
5.88ab
2.75b
0.17ab
10.7b
0.13ab
1.92b
0.39b
5.3b
30
5.96a
2.97a
0.18a
14.6a
0.14a
2.45a
0.44a
7.5a
2018
0
5.60d
1.70d
0.15d
7.1d
0.07d
1.61d
0.33d
1.0d
10
5.83bc
2.70c
0.18c
12.6c
0.13c
1.84c
0.43c
5.6c
20
6.10ab
2.89b
0.19bc
14.8b
0.15b
2.30b
0.56b
8.5b
30
6.31a
3.18a
0.21a
17.7a
0.17a
2.79a
0.67a
12.9a
Year (Y)
ns
Biochar (B)
Y × B
ns
Values followed by similar letters under the same column are not significantly different at according to Duncan’s multiple range test, = significant at 5% level of probability; ns = not significant at 5% probability level.
