Year | Year 1 | Year 2 | Y mean1 | ||||||
---|---|---|---|---|---|---|---|---|---|
Tillage operations | CT | NT | T mean | CT | NT | T mean | CT | NT | T × Y mean2 |
Nitrogen fertilizations | Yield-scaled N2O (kg Mg−1 year−1) | ||||||||
WOU | 1.29a (0.29) | 1.00b (0.16) | 1.14A (0.16) | 1.80a (0.21) | 2.34a (0.13) | 2.07A (0.15) | 1.55a (0.19) | 1.67a (0.27) | 1.61A (0.16) |
WU | 1.56a (0.32) | 1.16a (0.09) | 1.36A (0.17) | 1.04a (0.05) | 1.02a (0.23) | 1.03B (0.11) | 1.30a (0.18) | 1.09a (0.12) | 1.19B (0.11) |
N mean3 | 1.42a (0.21) | 1.08a (0.09) | 1.42a (0.13) | 1.68a (0.28) | 1.42a (0.13) | 1.38a (0.16) | |||
T × N mean4 | 1.25a (0.12) | 1.55a (0.16) |