| Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
|---|---|---|---|---|---|---|
| soil density | 0 – 20 Centimetres | 1.39 | gram per cubic centimetre | |||
| clay content | 20 | Percent |
| Crop | Years grown |
|---|---|
| clover | |
| winter rye | |
| potatoes | |
| mangolds | |
| spring oats | |
| winter wheat | |
| spring barley |
| Variable | Material | Units | Frequency | Scale | Comment |
|---|---|---|---|---|---|
| grain yield trait | Not specified |