Table 5.
Effect of cropping system, residue management and tillage based crop establishment treatments on soil aggregate associated carbon concentration.
| Treatment | Aggregate associated carbon (g kg−1) |
|||
|---|---|---|---|---|
| CMacAC | MesAC | CMicAC | Silt + clay | |
| Cropping system | ||||
| Rice–wheat | 8.45 | 8.24 | 7.97 | 12.28 |
| Rice–maize | 8.72 | 8.37 | 8.17 | 12.59 |
| LSD (p = 0.05) | 0.07 | 0.11 | ns | ns |
| Residue management | ||||
| Residue removal | 8.25 | 8.05 | 7.96 | 11.85 |
| Residue retention | 8.92 | 8.56 | 8.18 | 13.03 |
| LSD (p = 0.05) | 0.35 | 0.19 | 0.21 | 0.64 |
| Tillage based crop establishment practice | ||||
| CTPTR–CT | 8.31 | 7.96 | 7.77 | 12.60 |
| NPTPR–ZT | 8.57 | 8.28 | 8.19 | 12.65 |
| ZTTPR–ZT | 8.66 | 8.48 | 8.15 | 11.94 |
| ZTDSR–ZT | 8.80 | 8.51 | 8.16 | 12.56 |
| LSD (p = 0.05) | 0.15 | 0.22 | 0.23 | 0.56 |
CMacAC, coarse macro–aggregated carbon; MesAC, meso–aggregated carbon; CMicAC, coarse micro–aggregated carbon. ns, non-significant (p > 0.05).