Pathogenicity of the entomopathogenic fungus, Beauveria bassiana (Bals.) Vuill. endophytic and a soil isolate against the squash beetle, Epilachna chrysomelina (F.) (Coleoptera: Coccinellidae)

Egyptian Journal of Biological Pest Control

Table 1 Pathogenicity of Beauveria bassiana isolates to squash beetle Epilachna chrysomelina larval instars, 3 days post treatment

Isolate	Concentration Conidia /ml	Corrected mortality %/instar larvae
Isolate	Concentration Conidia /ml	First instar larvae	Second instar larvae	Third instar larvae	Fourth instar larvae
B. bassiana EE	10⁶	61.33 ± 5.77 c	45.20 ± 5.77 c	39.67 ± 6.67 c	24.99 ± 4.17 b
B. bassiana EE	10⁷	83.67 ± 8.29 b	72.60 ± 8.29 b	42.86 ± 6.67 c	32.14 ± 6.67 b
B. bassiana ES	10⁶	89.73 ± 10.7ab	89.36 ± 8.77ab	64.29 ± 8.12 b	37.71 ± 8.12 b
B. bassiana ES	10⁷	100.00 ± 0.00a	100.00 ± 0.00a	82.14 ± 10.22a	53.57 ± 10.33 a
Control		16.70 ± 3.33 d	16.70 ± 3.33 d	3.33 ± 1.01 d	6.67 ± 2.33 c

Means followed by a common letter within the same column are insignificantly different at 5% level of probability (Duncan’s multiple-range test)