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Table 5 Median lethal time (LT50) values for the indigenous strains of entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae bioassayed against 3rd instar larvae of fall armyworm Spodoptera frugiperda under laboratory conditions

From: Isolation, identification and virulence of indigenous entomopathogenic fungal strains against the peach-potato aphid, Myzus persicae Sulzer (Hemiptera: Aphididae), and the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

EPF strains Concentrations (conidia/ml) LT50 (days) Lower and upper 95% Fiducial limits
(days)
X2
(df = 30)*
P-value Slope ± SE
Beauveria bassiana 1.0 × 109 7.750 7.142 – 8.540 111.67  ≥ 0.001 5.056 ± 0.224
1.0 × 108 8.705 7.919 – 9.905 95.075  ≥ 0.001 4.721 ± 0.245
Metarhizium anisopliae 1.0 × 109 7.027 6.426 – 7.619 164.64  ≥ 0.001 5.589 ± 0.225
1.0 × 108 7.931 7.245 – 8.902 107.81  ≥ 0.001 4.890 ± 0.232
  1. *Since the significance level is less than 0.150, a heterogeneity factor is used in the calculation of confidence limits