Influence of hydrogen cyanide-producing rhizobacteria in controlling the crown gall and root-knot nematode, Meloidogyne incognita

Egyptian Journal of Biological Pest Control

Table 6 Effect of six isolates of HCN-producing rhizobacteria on incidence of crown gall disease on tomato plants in the absence or presence of Meloidogyne incognita after 45 days of inoculation

Rhizobacteria	Incidence of crown gall disease
	A. tumefaciens				A. tumefaciens + M. incognita
	Galls weight (g)/plant*	Decreasing in galls weight %**	No. of galls/plant***	Decreasing in no. of galls %****	Galls weight (g)/plant*	Decreasing in gall weight %**	No. of galls/plant***	Decreasing in no. of galls %****
P. japonica	0.00^G	100.0^A	0.0^F	100.0 ^A	0.00^G	100.0^A	0.0^F	100.0^A
B. megaterium	0.05^FG	92.1^AB	0.4^EF	93.3 ^AB	0.14^DEF	80.2^B	1.4^DE	81.7^BC
Pseudomonas sp. Gamma-81	0.00^G	100.0^A	0.0^F	100.0^A	0.00^G	100.0^A	0.0^F	100.0^A
P. tolaasii	0.24^BCD	60.8^CDE	2.4^CD	56.0^EF	0.25^BC	64.8^CD	2.6^CD	62.5^DE
P. chlororaphis	0.20^CDE	67.0^C	2.6^CD	52.0^EF	0.13^EF	81.7^B	1.8^CD	73.9^CD
P. mosselii	0.31^BC	49.9^E	2.8^C	48.0^F	0.33^B	53.0^DE	3.0^C	57.0^EF
Control(+)	0.61^A	0.00^F	5.4^B	0.0^G	0.71^A	0.00^F	7.0^A	0.0^G
Control(−)	0.00^G	–	0.0^F	–	0.00^G	–	0.0^F	–
Healthy plant	0.00^G	–	0.0^F	–	0.00^G	–	0.0^F	–

Means in the columns which marked with*, **, *** or **** shared a letter are not significantly different (p ≤ 0.05)