Table 4 Analysis of variance (mean squares) of the soil nitrate content at harvesting, yield, and N uptake affected by years and fertilization managements
Source | df | Mean square |
|---|---|---|
Yield (kg ha−1) | ||
Year (Y) | 5 | 14,969,990.7** |
Treatment (T) | 3 | 169,835,958** |
Y × T | 15 | 6,715,569.4** |
N uptake (kg ha−1) | ||
Year (Y) | 5 | 15,038.9** |
Treatment (T) | 3 | 76,425.2** |
Y × T | 15 | 2776.9** |
Nitrate content (0–90 cm)(kg ha−1) | ||
Year (Y) | 5 | 1399.41** |
Treatment (T) | 3 | 8843.44** |
Y × T | 15 | 392.20** |