Table 2.

(A) Effect of crop identity and biotopes on the microbial community compositions at the operational taxonomic unit (OTU) level and (B) effect of canola treatments and biotopes on the microbial community compositions at the OTU level, as determined by permutational multivariate analysis of variance (PERMANOVA).

	Bacteria			Fungi			Archaea
	F	R2	P	F	R2	P	F	R2	P
(A) COMPARISON BETWEEN CROPS
Cropa	6.5811	0.08803	0.001	9.0571	0.11556	0.001	0.53306	0.00918	0.001
Biotopeb	14.8921	0.0996	0.001	20.6269	0.13159	0.001	0.95217	0.0082	0.001
Crop:Biotope	3.7289	0.04988	0.001	2.5067	0.03198	0.001	0.05581	0.00096	0.975
(B) COMPARISON AMONG CANOLA TREATMENTS
Treatmentc	0.5422	0.01436	0.339	0.9714	0.02221	0.189	0.14253	0.00427	0.287
Biotope	7.7775	0.103	0.001	18.0785	0.20666	0.001	0.46114	0.00691	0.013
Treatment:Biotope	0.3239	0.00858	1	0.7288	0.01666	0.465	0.01297	0.00039	0.998

Significant effects greater than or equal to P < 0.05 are indicated in bold.

^aAll canola samples (Can_RE, canola grown as recommended; Can_HF, canola fertilized at 150% of the recommended rate; and Can_HD, canola seeded at 150% of the recommended rate) were compared with wheat and pea.

^bRoots or rhizosphere soil.

^cCanola treatments were Can_RE, Can_HF and Can_HD.