Evaluation of Rhizosphere Bacterial Antagonists against Ralstonia solanacearum Causing Tomato (Lycopersicon esculentum) Wilt in Central Ethiopia

Table 2

Mean radial zone of inhibition produced by B. subtilis (reference isolates) and rhizosphere bacteria (Bacillus and Pseudomonas spp.) against R. solanacearum, n = 3.

Groups	Isolate code	Inhibition zone in mm (mean ± SD)
AARC isolates	Abac13	12.67 ± 0.57^bc
	Abac14	10.3 ± 0.57^e
	Abac2	10 ± 1^ef
	Abac4	12.3 ± 1.5^bcd
Isolated rhizobacteria	B28	13.3 ± 0.57^ab
	B1	12.3 ± 1.5^bcd
	B12	7 ± 0^h
	B13	11.3 ± 0.57^cde
	B2	10.67 ± 0.57^de
	B7	9.67 ± 0.57^ef
	P1	8.67 ± 1.15^fg
	P12	8 ± 1^gh
	P2	11.3 ± 1.5^cde
	P23	12.3 ± 0.57^bcd
	P4	10.3 ± 0.57^e
	P5	12 ± 0^bcd
	P6	14.67 ± 0.57^a
	P7	11 ± 1^cde

Each data point is the mean of three replicates. The means with different letters are significantly different from each other as evaluated by Duncan’s multiple range tests (DMRT) analysis at  ≤ 0.05. Means with the same latter are not significantly different. AARC, Ambo Agricultural Research Center.