Table 1 Effect of different green manures on soil chemical properties.
Soil chemical properties | Treatments | |||
|---|---|---|---|---|
Control | Spinach | Red mustard | Green mustard | |
pH | 6.17 ± 0.03c | 6.67 ± 0.03a | 6.43 ± 0.03b | 6.47 ± 0.03b |
EC (dS m−1) | 1.02 ± 0.00b | 1.29 ± 0.13a | 0.91 ± 0.02b | 0.85 ± 0.01b |
CEC (cmolc kg−1) | 17.50 ± 0.10a | 17.34 ± 0.16a | 18.15 ± 0.52a | 17.23 ± 0.32a |
SOM (g kg−1) | 26.23 ± 0.24b | 28.56 ± 0.45a | 28.05 ± 0.77a | 24.97 ± 0.53b |
TN (g kg−1) | 1.60 ± 0.01b | 1.90 ± 0.00a | 1.70 ± 0.00b | 1.60 ± 0.00b |
TC (g kg−1) | 14.66 ± 0.25c | 14.83 ± 0.39c | 15.90 ± 0.06b | 17.00 ± 0.27a |
C:N ratio | 9.18 ± 0.19b | 7.94 ± 0.09c | 9.55 ± 0.20b | 10.63 ± 0.17a |
NO3− (mg kg−1) | 6.40 ± 1.95b | 7.73 ± 1.35b | 9.20 ± 0.25ab | 12.50 ± 0.32a |
NH4+ (mg kg−1) | 7.43 ± 0.23c | 8.63 ± 0.20a | 8.07 ± 0.09b | 8.17 ± 0.09ab |
AP (mg kg−1) | 687.30 ± 2.91a | 534.49 ± 2.07d | 582.04 ± 2.55b | 544.47 ± 2.36c |
K (cmolc kg−1) | 0.51 ± 0.01c | 1.43 ± 0.02a | 1.01 ± 0.01b | 0.98 ± 0.01b |