Table 2.
Significance of fixed effects on total system grain yield, total system biomass yield and overall total system yield across the years.
| Source | Degrees of freedom | Sum of squares | Wald statistic | p-value¶ |
|---|---|---|---|---|
| Overall total system yield | ||||
| (Intercept) | 1 | 73,851 | 367.03 | 2.20e−16*** |
| Treatment (Treat) | 1 | 31 | 3.5 | 0.729655ns |
| Subtreatment (Subtreat) | 3 | 17,395 | 225.63 | 1.35e−14*** |
| Season | 2 | 264,631 | 735.02 | 2.20e−16*** |
| Treat × subtreat | 3 | 508 | 0.75 | 0.57751ns |
| Treat × season | 2 | 2633 | 26.28 | 0.005974** |
| Subtreat × season | 6 | 3747 | 72.37 | 0.02384* |
| Treat × subtreat × season | 6 | 708 | 3.31 | 0.839173ns |
| Residual (MS) | 257 | |||
| Total system grain yield | ||||
| (Intercept) | 1 | 31,484 | 198.04 | 2.20e−16*** |
| Treat | 1 | 56 | 0.35 | 0.554526ns |
| Subtreat | 3 | 35,135 | 221 | 2.20e−16*** |
| Season | 2 | 208,213 | 1309.68 | 2.20e−16*** |
| Treat × subtreat | 3 | 144 | 0.91 | 0.824183ns |
| Treat × season | 2 | 361 | 2.27 | 0.321296ns |
| Subtreat × season | 6 | 3441 | 21.64 | 0.001405** |
| Treat × subtreat × season | 6 | 363 | 2.29 | 0.891634ns |
| Residual (MS) | 159 | |||
| Total system biomass yield | ||||
| (Intercept) | 1 | 16,939.5 | 267.85 | 2.20e−16*** |
| Treat | 1 | 168.8 | 2.669 | 0.1023ns |
| Subtreat | 3 | 7932.6 | 125.432 | 2.20e−16*** |
| Season | 2 | 5374.6 | 84.984 | 2.20e−16*** |
| Treat × subtreat | 3 | 232.8 | 3.682 | 0.57751ns |
| Treat × season | 2 | 1999.8 | 31.621 | 0.005974*** |
| Subtreat × season | 6 | 3683.5 | 58.244 | 0.02384*** |
| Treat × subtreat × season | 6 | 395.5 | 6.254 | 0.839173ns |
| Residual (MS) | 63.2 | |||
¶ns, not significant.
*p < 0.05; **p < 0.01; ***p < 0.001.