Variable | Depth | Value (range) | Units | Ref year | Estimated? | Baseline? |
---|---|---|---|---|---|---|
silt content | 38.5 | Percent | ||||
sand content | 35.2 | Percent | ||||
clay content | 26.4 | Percent | ||||
soil pH | 7.2 | |||||
soil organic carbon | 28 | gram per kilogram | ||||
soil carbon to nitrogen ratio | 12.7 |
Variable | Time period | Value (range) | Units |
---|---|---|---|
precipitation | 1981 – | 844 | millimeter |
air temperature | 1981 – | 9.1 |
Crop | Years grown |
---|---|
soybeans | |
maize | |
red clover | |
alfalfa | |
oats |
Variable | Material | Units | Frequency | Scale | Comment |
---|---|---|---|---|---|
grain yield trait | Not specified | ||||
economic data | Not specified |