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Mean cumulative N2O, N2DN and N2co emissions (g N m−2). P values are for the interaction between treatments.
| Urea-N | Moisture (kPa) | N2O | N2DN | N2co | |||
|---|---|---|---|---|---|---|---|
| +N | −1 | 3.99 | A | 8.61 | A | 1.92 | A |
| +N | −10 | 0.18 | B | 1.98 | A | 0.26 | B |
| −N | −1 | 0.16 | B | na | na | ||
| −N | −10 | −0.0003 | C | na | na | ||
| P value | 0.0321 | 0.0554 | 0.0437 |
Tukey-Kramer grouping: LS-means with the same letter are not significantly different, na not applicable. N2DN and N2co represent heterotrophic denitrification and codenitrification, respectively.
