| Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
|---|---|---|---|---|---|---|
| sand content | 0 – 60 Centimetres | 27 | Percent | |||
| silt content | 0 – 60 Centimetres | 11 | Percent | |||
| clay content | 0 – 60 Centimetres | 62 | Percent | |||
| soil pH | 0 – 30 Centimetres | 7.6 | 1993 | |||
| cation exchange capacity | 0 – 30 Centimetres | 39 | kilogram per centimole | 1993 | ||
| soil organic carbon | 0 – 30 Centimetres | 9 | gram per kilogram | 1993 |
| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| air temperature | (3 – 35) | degree Celsius | |
| precipitation | 593 | millimeter |
| Crop | Years grown |
|---|---|
| cotton | |
| winter wheat | |
| fallow |
| Variable | Material | Units | Frequency | Scale | Comment |
|---|---|---|---|---|---|
| grain yield trait | winter wheat | ||||
| cotton lint yield | cotton |