Table 2. Factors affecting basic leaching depending on the crop in the previous year.
Source: Aronsson & Ulén (2013) based on Aronsson & Torstensson (2004) and Hoffmann (1999).
| Crop in the previous year | Factor |
|---|---|
| Cereal | 1.0 |
| Cereal followed by winter wheat | 0.9 |
| Cereal followed by winter oilseed | 0.8 |
| Cereal and oilseed with undersown catch crops | 0.7 |
| Cereal and oilseed with catch crops sown after | 0.9 |
| Cereal with undersown ley (grass and legumes) | 0.7 |
| Oilseed | 1.2 |
| Oilseed followed by winter wheat | 1.1 |
| Oilseed with undersown catch crops | 0.7 |
| Oilseed with catch crops sown after | 0.9 |
| Finalising ley without plowing | 0.6 |
| Ley plowed in early autumn | 2.0 |
| Ley plowed in mid-autumn (October–December) | 1.9 |
| Potato | 1.7 |
| Potato followed by catch crop | 1.2 |
| Beet | 0.9 |
| Legumes | 1.3 |
| Flax | 1.3 |