| Chemical analysis | Growing season | |
| 2014 | 2015 | |
| pH | 7.75 | 7.89 |
| N (ppm) | 19.10 | 19.25 |
| P (ppm) | 2.55 | 2.72 |
| K (ppm) | 39.07 | 39.28 |
| Organic matter | 0.47 | 0.51 |