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Table 7 The effects of planting corn or soybean on log(SOC(Mg/ha C)) stocks in corn-soybean rotations (raw regression result)

From: Crop rotation and the impact on soil carbon in the U.S. Corn Belt

  1. Soybean is base group. Clustered standard errors at the area level are displayed in parantheses
  2. *p<0.1
  3. **p<0.05
  4. ***p<0.01