Main effect of shredded pine bark mulch thickness on soil moisture tension measured at a depth of 15.2 cm (6 in.) in the fine, sandy loam field plots, n = 36.
| Mulch thickness (cm) | Soil moisture tension (kPa) |
|---|---|
| 0 | −9.1 a‘ |
| 7.6 | −5.8 a |
| 15.2 | −10.2 a |
| 22.9 | −16.2 b |
* Means followed by the same letter are not significantly different (P ≤ 0.05) using the least squares means procedure.