| Indicator | Weight |
| SOM (g∙kg−1) | 0.14 |
| TN (g∙kg−1) | 0.15 |
| AP (mg∙kg−1) | 0.07 |
| AK (mg∙kg−1) | 0.10 |
| EC (mS∙cm−1) | 0.16 |
| BD (g∙cm−3) | 0.12 |
| Clay % | 0.10 |
| pH | 0.16 |