| Variable | BB | MK | Literature | |
| Buildup function | Maximum buildup (kg/ha) | 56 | 56 | 5.0 - 351,2 (kg/ha-day) |
| Buildup rate (/day) | 1 | 1 | 13 | |
| Wash-off function | Wash-off coefficient | 0.098 | 0.087 | 0.11 - 0.192 |
| Wash-off exponent | 1.79 | 1.53 | 0.0 - 32 | |