Mean bulk density (g/cc) of soil samples taken at 7.6 and 61 cm distances from outside of bariers and at 7.6 and 38 cm depths in plots with and without cultivation (subsurface barriers). Al bulk densities were corrected for gravel content (30% by volume).
| Distance (cm) | Depth (cm) | Cultivation (with subsurface barrier) | No Cultivation (without subsurface barrier) |
|---|---|---|---|
| bulk density (g/cc) | bulk density (g/cc) | ||
| 7.6 | 7.6 | 1.49 (.19) | 1.51 (.10) |
| 61.0 | 7.6 | 1.46 (.20) | 1.49 (.03) |
| 7.6 | 38.0 | 1.60 (.05) | 1.64 (.03) |
| 61.0 | 38.0 | 1.58 (.05) | 1.72 (.10) |
Standard deviation of samples (n=3) in parentheses after each mean.
Standard error of means = 0.086.