| Cropping system (CS) | pH | ECe |
| Wheat-mung bean | 7.88 | 0.12 |
| Wheat-maize | 7.87 | 0.12 |
| Chickpea-maize | 7.92 | 0.14 |
| Chickpea-mung bean | 7.88 | 0.13 |
| Significance (P ≤ 0.05) | NS | NS |
| Biochar (BC) (t∙ha−1) |
| |
| 0 | 7.89ab | 0.13 |
| 40 | 7.89ab | 0.12 |
| 60 | 7.91a | 0.14 |
| 80 | 7.86b | 0.12 |
| LSD(P ≤ 0.05) | 0.043 | NS |
| Interactions |
| |
| CS × BC | NS | NS |