Table 1. List of soils included in this study.
| Sampling Site | Soil type | Land use | Crops | North coordinate | East coordinate | ||
| 2009 | 2010 | 2011 | |||||
| Buinen (B) | Sandy loam | agriculture | barley | potato | potato | 52°55′386″ | 006°49′217″ |
| Valthermond (V) | Sandy loam | agriculture | barley | potato | potato | 52°50′535″ | 006°55′239″ |
| Droevendaal (D) | Sandy loam | agriculture | triticale | barley | barley | 51°59′551″ | 005°39′608″ |
| Wildekamp (K) | Sandy loam | grassland | grass | grass | grass | 51°59′771″ | 005°40′157″ |
| Kollumerwaard (K) | Clayey | agriculture | potato | grass | sugar beet | 53°19′507″ | 006°16′351″ |
| Steenharst (S) | Silt loam | agriculture | grass | potato | grass | 53°15′428″ | 006°10′189″ |
| Grebedijk (G) | Clayey | agriculture | potato | wheat | wheat | 51°57′349″ | 005°38′086″ |
| Lelystad (L) | Clayey | agriculture | potato | grass | corn | 52°32′349″ | 005°33′601″ |