| Variable | Time period | Value (range) | Units |
|---|---|---|---|
| air temperature | 18.3 | degree Celsius | |
| precipitation | 1100 | millimeter |
| Crop | Years grown |
|---|---|
| soybeans | |
| peas | |
| maize | |
| wheat |
| Variable | Material | Units | Frequency | Scale | Comment |
|---|---|---|---|---|---|
| grain yield trait | All crops | kg/ha | anually | Since 2008 to 2010, the experiment has 4 blocks. After that, it was reduced to 3 blocks. | |
| stover biomass | Not specified | kilogram per hectare | anually | ||
| SOC, TN, P | Not specified | % | usually | In some years, were included physical, chemical and biological soil properties measurements. |