Table 2.

Analysis of variance of richness and diversity indices

Factors		Shannon	Simpson	Richness
Cycle	Cycle 1	6.56 ± 0.06 a	245.38 ± 27.44 a	2012.74 ± 30.35 a
	Cycle 2	5.61 ± 0.06 b	99.11 ± 7.30 b	1202.42 ± 35.63 b
	Cycle 9	4.98 ± 0.08 c	62.29 ± 6.95 c	784.56 ± 40.50 c
Treatment	CK	6.44 ± 0.13 a	272.47 ± 50.26 a	1716.67 ± 105.01 a
	R	6.46 ± 0.04 a	198.95 ± 12.43 b	1982.26 ± 31.42 a
	B	5.05 ± 0.08 b	70.40 ± 5.60 c	931.03 ± 44.21 b
	G	5.16 ± 0.08 b	65.05 ± 4.80 c	901.16 ± 47.92 b

CK rhizosphere soil from control plants without R. solani AG8 infection, R rhizosphere from plants infected with R. solani AG8 in cycle 1, B rhizosphere from plants with “bad” treatment (the worst wheat root disease), G rhizosphere soil from plants with “good” treatment (the least wheat root disease). The values are means ± standard error. Different letters indicate significant differences for indices (p ≤ 0.05, Tukey test). The statistical contrasts were performed separately among cycles and treatments