TABLE 2.

Mean values of bacterial α-diversity indices in the rhizosphere of canola under different crop diversification levels, in 2013 and 2016.

	2013				2016
Index1	Monoculture2	Low	Medium	High	Monoculture	Low	Medium	High
Shannon	5,256	5,297	5,318	5,219	5,397	5,321	5,183	5,227
Simpson	0,990	0,989	0,990	0,988	0,990	0,989	0,985	0,986
Chao1	347,961	385,078	394,167	365,999	441,829	429,286	396,087	428,412
Richness	346,467	382,942	396,768	364,275	436,833	423,442	390,867	420,333

¹No significant differences in diversity index values were detected between the crop rotations by Tukey test α = 0.05. ²Monoculture, canola monoculture; Low, wheat-canola rotation; Medium, pea-barley-canola rotation; High, lentil-wheat-LL-pea-barley-RR.