Table 2.

Summary of two-way ANOVA results (F-values and significance levels) of seedlings traits (plant height, shoot and root biomass) or relative growth rate (RGR) in response to competition (presence−absence), fertilization (control vs fertilized) and their interaction in Rumex conglomeratus (a), R. acetosa (b) and R. confertus (c).

Source of variation	Seedling height			Shoot biomass			Root biomass			SLA			Root:shoot ratio			RGR
	df	F	P	df	F	P	df	F	P	df	F	P	df	F	P	df	F	P
(a) R. conglomeratus
Competition (C)	1	18.6	<0.001	1	68.5	<0.001	1	9.7	<0.001	1	11.2	<0.01	1	10.2	<0.01	1	46.7	<0.01
Fertilization (Ft)	1	17.1	<0.001	1	57.3	<0.001	1	9.2	<0.001	1	7.8	<0.01	1	8.9	<0.01	1	62.3	<0.01
C × Ft	1	9.6	<0.001	1	35.5	<0.01	1	4.8	<0.001	1	12.5	<0.01	1	7.8	<0.01	1	36.3	<0.01
(b) R. acetosa
Competition (C)	1	17.9	<0.01	1	57.4	<0.001	1	8.8	<0.01		5.8	<0.01	1	6.6	<0.01	1	41.7	<0.001
Fertilization (Ft)	1	16.3	<0.001	1	49.2	<0.001	1	7.6	<0.001		5.6	<0.01	1	7.5	<0.01	1	53.5	<0.001
C × Ft	1	8.5	<0.001	1	45.8	<0.001	1	6.2	<0.001		9.2	<0.01	1	8.1	<0.01	1	43.8	<0.01
(c) R. confertus
Competition (C)	1	14.5	<0.001	1	18.5	<0.001	1	17.8	<0.001		8.5	<0.01	1	6.7	<0.01	1	47.1	<0.01
Fertilization (Ft)	1	15.1	<0.001	1	14.9	<0.001	1	16.4	<0.001		9.0	<0.01	1	8.3	<0.01	1	42.7	<0.001
C × Ft	1	5.3	<0.001	1	4.8	<0.001	1	5.7	<0.001		7.6	<0.01	1	7.5	<0.01	1	26.5	<0.01

Absence of competition refers to situations where seedlings were grown in monocultures; presence of competition refers to mixtures of seedlings. Data log transformed.