Table 3. Effects of maize type and sampling time on beta diversity (Bray–Curtis distance) of natural enemy community.

Year	Adonis on Bray–Curtis distances	df	Sums of Squares	F-statistics	R2	P-value
2012	Maize type	1	0.018	0.48	0.00	0.809
	Sampling time	9	2.920	8.69	0.61	0.001 ***
	Residuals	49	1.828	–	0.38	–
	Total	59	4.767	–	–	–
2013	Maize type	1	0.027	0.82	0.00	0.538
	Sampling time	9	1.846	6.33	0.53	0.001***
	Residuals	49	1.589	–	0.46	–
	Total	59	3.461	–	–	–

^***P < 0.001.