| Parameters | Correlation coefficient (r) | |
| Saturated + Continuous | AWDIs | |
| Grain yield | −0.547 | 0.585 |
| Water productivity | −0.754 | 0.444 |
| Soil pH | 0.309 | 0.009 |
| Soil Eh | −0.918 | −0.794 |
| Soil porosity | −0.712 | −0.782 |
| Organic matter | −0.772 | 0.309 |
| Total N | −0.997 | 0.292 |
| Available P | −0.385 | 0.062 |
| K | −0.883 | 0.311 |