Table 3.
Ragweed germination, mean plant biomass, and mean plant height in response to light pollution (LP), earthworms (EW), plant species (PS), sowing depth (SD) and their interactions. Mean plant height and biomass analyses only considering the 56 pots containing ragweed plants at the end. Pr (> ChiSq) and Pr (> F) significance codes: *** <0.001, ** <0.01, * <0.05
| Germination | Mean plant biomass | Mean plant height | ||||
|---|---|---|---|---|---|---|
| Parameters | Df | Pr (> ChiSq) | Df | Pr (> F) | Df | Pr (> F) |
| Light pollution (LP) | 1 | < 2.200e− 16*** | 1 | 0.054 | 1 | 3.490e− 07*** |
| Earthworms (EW) | 1 | < 2.200e− 16*** | 1 | 0.068 | 1 | 0.208 |
| Plant species (PS) | 1 | 0.044* | 1 | 0.662 | 1 | 0.618 |
| Sowing depth (SD) | 1 | < 2.200e− 16*** | 1 | 0.857 | 1 | 0.140 |
| LP x EW | 1 | 1.508e− 09*** | 1 | 0.970 | 1 | 0.699 |
| LP × SD | 1 | 5.730e− 14*** | 1 | 0.288 | 1 | 0.479 |
| LP x PS | 1 | 0.236 | 1 | 0.686 | 1 | 0.443 |
| EW × SD | 1 | < 2.200e− 16*** | 1 | 0.578 | 1 | 0.983 |
| EW x PS | 1 | 0.102 | 1 | 0.740 | 1 | 0.540 |
| SD × PS | 1 | 2.999e− 05*** | 1 | 0.808 | 1 | 0.393 |
| LP x EW × SD | 1 | 4.575e− 06*** | 1 | 0.990 | 1 | 0.862 |
| LP × SD × PS | 1 | 0.002** | 1 | 0.253 | 1 | 0.600 |
| EW × SD × PS | 1 | 0.010* | 1 | 0.717 | 1 | 0.934 |
| LP x EW x PS | 1 | 0.063 | 1 | 0.751 | 1 | 0.802 |
| Residuals | 41 | 41 | ||||