Efficacy of entomopathogenic fungi against the stored-grain pests, Sitophilus granarius L. and S. oryzae L. (Coleoptera: Curculionidae)

Egyptian Journal of Biological Pest Control

Table 1 Lethal time (LT₅₀ and LT₉₀) for Sitophilus oryzae treated with the tested entomopathogenic fungal isolates at 20 and 25 °C

Isolates***	Temperatures
	20 °C			25 °C
	LT₅₀ (95% confidence limit)	LT₉₀ (95% confidence limit)	χ ²	LT₅₀ (95% confidence limit)	LT₉₀ (95% confidence limit)	χ ²
TR-01	4.87 (4.56–5.23) a* A**	7.84 (7.25–8.63) a B	3.17	4.57 (4.16–4.98) a A	6.42 (5.87–7.27) a B	4.57
TR-07	4.78 (4.22–5.43) a A	7.67 (6.75–9.26) a B	12.79	3.73 (3.47–3.98) b A	5.96 (5.59–6.42) a B	8.17
TR-78-3	2.75 (2.54–2.97) b A	4.17 (3.84–4.63) b B	1.30	3.34 (3.08–3.60) b A	5.62 (5.25–6.08) a B	9.37
TR-106	2.88 (2.68–3.13) b A	4.47 (4.09–5.02) b B	3.32	2.20 (-----) c A	3.82 (-----) b B	11.87
TR-217	5.14 (4.47–6.04) a A	8.26 (7.08–10.59) a B	16.28	3.17 (3.02–3.32) b A	3.94 (3.74–4.22) b B	3.67
F	17.642	11.627		34.481	24.935
P	0.000	0.001		0.000	0.000

*The same small letters within columns indicates no significant differences between means
**The same capital letters within rows indicates no significant differences between means
***TR-01 (Simplicillium lamellicola), TR-07 (Lecanicillium muscarium), TR-78-3 (Isaria fumosorosea), TR-106 (Metarhizium anisopliae), and TR-217 (Beauveria bassiana)