TABLE 2.

F and P values^a from ANOVA tests of soil treatment, host plant effects, and their interaction on the relative spore densities of AMF species

Glomus species	Source of variation
	Soil treatment		Host plant		Soil × plant interaction
	F	P	F	P	F	P
Glomus sp. III	20.53	0.0001	31.77	0.0001	9.77	0.0001
G. mosseae	12.87	0.0001	4.30	0.082	4.90	0.0001
G. claroideum	3.94	0.0066	11.08	0.0001	7.56	0.0001
Glomus sp. IV	4.87	0.0018	0.91	0.44	0.83	0.62
Glomus sp. V	9.94	0.0001	5.12	0.0032	2.76	0.0047
Glomus sp. VI	9.20	0.0001	6.97	0.0004	7.46	0.0001

^aF is the between treatment variance/within treatment variance ratio and provides a value for the equality of treatment means. The P value obtained for each F, according to the corresponding degree of freedom, as follows (soil treatment, 4; host plant, 3; soil × plant interaction, 12), indicates the probability that differences between treatment means are due to sampling error.