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Table 6 Median lethal concentration (LC50) 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 Time (days) LC50
(conidia/ml)
Lower and upper 95% Fiducial Limits
(conidia/ml)
X2 (df = 30)* P-value Slope ± SE
Beauveria bassiana 10 d 2.839E + 07 1.818E + 07 – 4.423E + 07 33.379  ≥ 0.001 0.472 ± 0.029
Metarhizium anisopliae 10 d 8.843E + 05 2.973E + 05 – 1.901E + 06 25.809  ≥ 0.001 0.356 ± 0.025
  1. *Since the significance level is less than 0.150, a heterogeneity factor is used in the calculation of confidence limits