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Table 3 Median lethal concentration (LC50) values for the indigenous strains of entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae bioassayed against late 3rd instar nymphs of peach-potato aphid Myzus persicae 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 ± S.E

Beauveria bassiana

7

1.674E + 07

8.543E + 06 − 3.069E + 07

57.638

 ≥ 0.001

0.417 ± 2.71

 

10

7.752E + 06

3.043E + 06 − 1.580E + 07

108.124

 ≥ 0.001

0.547 ± 0.30

Metarhizium anisopliae

7

1.122E + 08

4.466E + 07 − 3.979E + 08

69.012

 ≥ 0.001

2.972 ± 0.26

 

10

8.701E + 07

4.362E + 07 − 1.965E + 08

53.890

 ≥ 0.001

3.724 ± 0.28

  1. *Since the significance level is less than 0.150, a heterogeneity factor is used in the calculation of confidence limits