Table 2.

ANOVAs for effects of patch arrangement (parallel vs. reciprocal), patch scale (large vs. small) and intraspecific competition (without vs. with competition) on the growth of I. japonica at the whole container level.

Effect	df	Biomass	Number of ramets	Rhizome length
Patch arrangement (Pa)	1, 64	1.373	0.894	0.032
Patch scale (Ps)	1, 64	8.927∗∗	6.502∗	4.253∗
Competition (C)	1, 64	45.823∗∗∗	8.716∗∗	28.749∗∗∗
Pa ×Ps	1, 64	0.171	0.028	0.001
Pa × C	1, 64	0.822	0.024	0.857
Ps × C	1, 64	0.940	1.743	0.053
Pa ×Ps × C	1, 64	0.260	0.002	0.688

Significance levels: ^∗∗∗P < 0.001, ^∗∗P < 0.01, ^∗P < 0.05.