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Egyptian Journal of Biological Pest Control

Table 2 Median lethal time (LT50) 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

Concentrations (conidia/ml)

LT50 (days)

Lower and upper 95% Fiducial Limits (days)

X2

(df = 30)*

P-value

Slope ± S.E

Beauveria bassiana

1.0 × 109

4.571

4.220 – 4.909

68.748

 ≥ 0.001

4.353 ± 0.183

1.0 × 108

6.480

5.797 – 7.386

59.180

 ≥ 0.001

4.353 ± 0.183

Metarhizium anisopliae

1.0 × 109

6.860

6.166 – 7.770

90.196

 ≥ 0.001

3.053 ± 0.167

1.0 × 108

7.883

6.756 – 10.000

107.26

 ≥ 0.001

2.552 ± 0.171

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