Table 3.
Treatments | pH | OC % | N % | P mg kg−1 | Ca | Mg | K | EA | ECEC |
---|---|---|---|---|---|---|---|---|---|
cmol kg−1 | |||||||||
2008 | |||||||||
Velvet bean-Maize | 6.17 | 1.49 | 0.19 | 7.70 | 1.75 | 1.0 | 0.24 | 0.08 | 3.18 |
Cowpea-maize | 6.55 | 1.26 | 0.17 | 4.2 | 1.95 | 0.84 | 0.19 | 0.11 | 3.22 |
Soybean-Maize | 6.53 | 1.50 | 0.19 | 6.9 | 1.93 | 0.84 | 0.21 | 0.12 | 3.19 |
Maize-maize | 6.74 | 1.29 | 0.16 | 6.07 | 1.91 | 0.83 | 0.18 | 0.16 | 2.31 |
LSD (0.05) | 0.28** | 0.19* | 0.02** | 1.65** | ns | 0.16* | ns | 0.03** | 0.59** |
N application | |||||||||
0 kg N ha−1 | 6.48 | 1.37 | 0.16 | 6.07 | 1.89 | 0.83 | 0.22 | 0.11 | 3.27 |
60 kg N ha−1 | 6.51 | 1.39 | 0.18 | 6.38 | 1.88 | 0.92 | 0.19 | 0.11 | 3.12 |
LSD (0.05) | ns | ns | 0.01** | ns | ns | ns | ns | ns | ns |
Residue management | |||||||||
Residue incorporated | 6.57 | 1.41 | 0.19 | 5.89 | 1.93 | 0.86 | 0.19 | 0.12 | 3.20 |
Residue not incorporated | 6.43 | 1.37 | 0.16 | 6.56 | 1.85 | 0.9 | 0.22 | 0.11 | 3.19 |
LSD (0.05) | ns | ns | 0.01** | ns | ns | ns | ns | ns | ns |
Velvet bean-Maize | 6.78 | 1.48 | 0.27 | 2009 12.38 | 3.14 | 1.19 | 0.31 | 0.03 | 4.83 |
Cowpea-maize | 6.68 | 1.43 | 0.18 | 14.10 | 2.77 | 1.03 | 0.32 | 0.07 | 4.30 |
Soybean-Maize | 6.78 | 1.51 | 0.19 | 9.31 | 2.92 | 1.12 | 0.31 | 0.10 | 4.52 |
Maize-maize | 6.80 | 1.51 | 0.13 | 8.91 | 2.84 | 1.14 | 0.30 | 0.06 | 4.46 |
LSD (0.05) | ns | ns | 0.06** | ns | ns | ns | ns | ns | ns |
Nitrogen application | |||||||||
0 kg N ha−1 | 6.82 | 1.41 | 0.17 | 12.57 | 2.91 | 1.13 | 0.32 | 0.05 | 4.54 |
60 kg N ha−1 | 6.69 | 1.40 | 0.22 | 9.79 | 2.92 | 1.11 | 0.30 | 0.08 | 4.51 |
LSD (0.05) | 0.1* | ns | 0.04* | ns | ns | ns | ns | ns | s |
Residue management | |||||||||
Residue incorporated | 6.83 | 1.47 | 0.21 | 12.83 | 2.90 | 1.08 | 0.31 | 0.18 | 4.47 |
Residue not incorporated | 6.69 | 1.49 | 0.18 | 9.52 | 2.94 | 1.16 | 0.31 | 0.17 | 4.58 |
LSD (0.05) | 0.10** | ns | ns | ns | ns | ns | ns | ns | ns |
*significant at 5%, **highly significant at 1%, ns- not significant.