Table 2. The dependence of root, stem, leaf biomass on origin, N addition, P addition and soil sterilization and their interactions in a MANOVA and follow-up ANOVAs.

	MANOVA			Root			Stem			Leaf
Effect	DF	F	P	DF	F	P	DF	F	P	DF	F	P
Origin	3,4	2.52	0.1971	1,6	1.09	0.3366	1,6	0.12	0.7446	1,6	5.35	0.0600
N	3,189	1.01	0.3911	1,191	2.40	0.1227	1,191	0.25	0.6167	1,191	0.18	0.6723
P	3,189	7.15	<0.0001	1,191	12.20	0.0006	1,191	16.79	<0.0001	1,191	16.21	<0.0001
Sterilization	3,189	83.84	<0.0001	1,191	0.23	0.6339	1,191	0.02	0.8918	1,191	171.29	<0.0001
Origin×N	3,4	0.48	0.7147	1,6	0.44	0.5323	1,6	0.42	0.5402	1,6	0.01	0.9915
Origin×P	3,4	3.95	0.1087	1,6	1.46	0.2717	1,6	0.09	0.7773	1,6	0.99	0.3589
Origin×Sterilization	3,4	7.16	0.0437	1,6	0.69	0.4376	1,6	0.48	0.5142	1,6	14.52	0.0089
N×P	3,189	0.59	0.6228	1,191	0.06	0.8117	1,191	0.25	0.6205	1,191	0.53	0.4684
N×Sterilization	3,189	1.75	0.1574	1,191	0.07	0.7855	1,191	0.32	0.5716	1,191	2.26	0.1348
P×Sterilization	3,189	1.26	0.2910	1,191	2.30	0.1311	1,191	3.56	0.0609	1,191	0.57	0.4509
Origin×N×P	3,4	0.22	0.8789	1,6	0.43	0.5385	1,6	0.42	0.5420	1,6	0.80	0.4056
Origin×N×Sterilization	3,4	0.39	0.7676	1,6	1.34	0.2914	1,6	0.88	0.3850	1,6	0.05	0.8314
Origin×P×Sterilization	3,4	0.81	0.5514	1,6	0.15	0.7111	1,6	0.06	0.8211	1,6	1.36	0.2872
N×P×Sterilization	3,189	0.57	0.6342	1,191	0.64	0.4243	1,191	0.01	0.9176	1,191	0.59	0.4445
Origin×N×P×Sterilization	3,4	8.45	0.0332	1,6	0.43	0.5385	1,6	1.39	0.2834	1,6	3.85	0.0973

Significant results shown in bold.