Efficacy of Clonostachys rosea, as a promising entomopathogenic fungus, against coleopteran stored product insect pests under laboratory conditions

Egyptian Journal of Biological Pest Control

Table 1 The corrected mortalities of Callosobruchus maculatus, Trogoderma granarium and Tribolium castaneum adults treated with conidia of two Clonostachys rosea isolates. The conidial concentration of each entomopathogenic fungal isolate used for treatment was 1 × 10⁸ conidia ml⁻¹

Insect species	EPF isolate	Corrected mortality (%)
Insect species	EPF isolate	1 day	2 days	3 days	4 days	5 days	6 days
*Callosobruchusmaculatus*	Clonostachys rosea isolate AA80	0.0 aA	3.0 aA	20.0 aB	38.2 aC	57.3 aD	75.7 aE
*Callosobruchusmaculatus*	Clonostachysrosea isolate AA82	0.0 aA	2.0 aA	21.4 aB	39.1 aC	58.0 aD	75.1 aE
*Trogoderma granarium*	Clonostachysrosea isolate AA80	0.0 aA	0.0 aA	19.0 aB	37.0 aC	57.2 aD	73.5 aE
*Trogoderma granarium*	Clonostachys rosea isolate AA82	0.0 aA	1.0 aA	20.0 aB	36.1 abC	55.0 abD	71.7 abE
*Tribolium castaneum*	Clonostachys rosea isolate AA80	0.0 aA	0.0 aA	17.6 aB	34.8 bC	54.9 bD	70.7 abE
*Tribolium castaneum*	Clonostachys rosea isolate AA82	0.0 aA	0.0 aA	17.4 aB	35.3 bC	53.2 bD	71.4 bE

Values within a column followed by the same lowercase letters indicate no significant differences among insect species of both EPF isolates; values within a row followed by different uppercase letters indicate significant differences among days after treatment within each insect species and EPF isolate combination at P = 0 .05 using LSD test