| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| air temperature | 1991 – 2016 | 15.4 (6.5 – 24.4) | degree Celsius |
| precipitation | 1991 – 2016 | 625 (451 – 1069) | millimeter |
| Crop | Years grown |
|---|---|
| maize | |
| wheat | |
| triticales | |
| beans |
| Variable | Material | Units | Frequency | Scale | Comment |
|---|---|---|---|---|---|
| grain yield trait | All crops | annual | |||
| plant quality traits | All crops | annual | |||
| soil pH | Soil | sampled sometimes | |||
| soil salinity | Soil | sampled sometimes | |||
| soil total carbon | Soil | sampled sometimes | |||
| composition of soil | Soil | sampled sometimes | |||
| soil water content | Soil | sampled sometimes | |||
| weed species richness | Not specified | sampled sometimes |