| Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
|---|---|---|---|---|---|---|
| soil organic matter | 3.5 | Percent | ||||
| soil pH | 6.1 | |||||
| clay content | (35 – 36) | Percent | ||||
| total K in clay fraction | 2 | Percent |
| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| annual total precipitation | 585 | millimeter |
| Crop | Years grown |
|---|---|
| winter wheat | |
| maize | |
| peas |