Table 2.
Analysis of variance for root biomass and disease indexes of hyacinth bulbs in the soil bioassays and hyphal biomass in the volatile exposure assays.
| Df | F 2011 | p 2011 | Df | F 2012 | p 2012 | |
|---|---|---|---|---|---|---|
| ROOT WEIGHT | ||||||
| Anaerobic soil disinfestation | 1 | 26.24 | 3.1E–05 | 1 | 22.77 | 7.4E–05 |
| Peat addition | 1 | 8.23 | 8.5E–03 | 1 | 57.63 | 7.9E–08 |
| Pythium addition | 1 | 21.64 | 1.0E–04 | 1 | 107.4 | 2.4E–10 |
| Disinfestation: peat amendment | 1 | 0.18 | 0.68 | 1 | 3.92 | 0.06 |
| Disinfestation: Pythium addition | 1 | 5.19 | 0.03 | 1 | 1.60 | 0.22 |
| Peat amendment: Pythium addition | 1 | 0.76 | 0.39 | 1 | 0.18 | 0.68 |
| Disinfestation: peat: Pythium addition | 1 | 0.45 | 0.51 | 1 | 2.42 | 0.13 |
| VOLATILE ASSAY | ||||||
| Anaerobic soil disinfestation | 1 | 85 | 4.0E–13 | 1 | 0.58 | 0.45 |
| Peat addition | 1 | 4 | 0.05 | 1 | 0.43 | 0.52 |
| Disinfestation: peat amendment | 1 | 3 | 0.11 | 1 | 1.17 | 0.29 |
| DISEASE INDEX | ||||||
| Anaerobic soil disinfestation | 1 | 54.62 | 1.3E–07 | 1 | 2.74 | 0.11 |
| Peat addition | 1 | 4.52 | 0.04 | 1 | 17.38 | 3.4E–04 |
| Pythium addition | 1 | 5.81 | 0.02 | 1 | 125.09 | 5.3E–11 |
| Disinfestation: peat amendment | 1 | 5.07 | 0.03 | 1 | 1.27 | 0.27 |
| Disinfestation: Pythium addition | 1 | 5.51 | 0.03 | 1 | 1.93 | 0.18 |
| Peat amendment: Pythium addition | 1 | 0.20 | 0.66 | 1 | 6.00 | 0.02 |
| Disinfestation: peat: Pythium addition | 1 | 0.91 | 0.35 | 1 | 0.22 | 0.65 |
Bold numbers indicate significant main effects and significant interactions. Df, degrees of freedom; F, F-value; p, p-value. This table supplies the results of statistical analysis of the data shown in Figure 1.