| Soils | Moisture (%) | pH | EC (dS m−1) | Total C (g kg−1) | Total N (g kg−1) | Available P (mg kg−1) |
| Bulk soil | 0.35 | 9.08 | 0.051 | 1.70 | 0.16 | 18.9 |
| Rhizosphere soil | 0.31 | 9.25 | 0.053 | 1.69 | 0.11 | 30.8 |