| Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
|---|---|---|---|---|---|---|
| soil organic matter | 2 | Percent | ||||
| soil pH | 4.7 | |||||
| clay content | (37 – 45) | percent | ||||
| total K in clay fraction | 1.8 | Percent |
| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| annual total precipitation | 581 | millimeter |
| Crop | Years grown |
|---|---|
| winter wheat | |
| maize | |
| peas |