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

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