| Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
|---|---|---|---|---|---|---|
| clay content | 0 – 23 Centimetres | (22 – 24) | Percent | |||
| soil pH | 0 – 23 Centimetres | 7.63 (7.34 – 7.83) | 2008 |
| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| precipitation | 1981 – 2010 | 733 (515.5 – 973.5) | millimeter |
| air temperature | 1981 – 2010 | 9.8 (8.51 – 10.89) | degree Celsius |
| Crop | Years grown |
|---|---|
| wheat |
| Variable | Material | Units | Frequency | Scale | Comment |
|---|---|---|---|---|---|
| grain yield trait | wheat | t/ha | annual | plot | |
| total soil nitrogen | Soil | % | occasionally | plot | Total N by LECO |
| soil organic carbon | Soil | % | occasionally | Total C by LECO minus CaCO3 |