Comparison of mean percent CO2, O2, and N2 gas samples taken biweekly in 2002 and 2003 from MODERATE-and HIGH-density soil treatments.
| Soil gasz | |||
|---|---|---|---|
| Soil treatmenty | CO2 | O2 | N2 |
| MODERATE-density | 0.66 ± 0.05 a | 19.0 ± 0.48 b | 80.4 ± 0.56 a |
| HIGH-density | 0.21 ± 0.03 b | 21.2 ± 0.10 a | 78.7 ± 0.09 b |
↵zGases were sampled during growing season of 2002 and 2003 and represent the mean for the three sample ports per pot.
↵yMODERATE= mean bulk density for three-year study of 1.64 g·cm−3 (n = 21 gas samples), and HIGH= mean bulk density for the three-year study of 1.77 g·cm−3. (n = 24 gas samples); means ± mean standard error followed by different letters indicate a significant difference between soil treatments, at P ≤ 0.05.