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Egyptian Journal of Biological Pest Control

Table 3 LC50 and LC90 values of the isolates against second-instar larvae of Spodoptera littoralis at 13 days after treatment

From: Pathogenicity of some local entomopathogenic fungus isolates on the cotton leafworm larvae, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)

Isolates

Slope ± SE

X2

LC50 (conidia/ml) (95% Confidence limits lower–upper)

LC90 (conidia/ml) (95% Confidence limits lower–upper)

ORU-50

0.8333 ± 0.05

17.595

7.65 × 107

(1.09 × 107–2.36 × 109)

7.38 × 109

(5.28 × 108–7.08 × 1014)

ORM-40

0.75 ± 0.04

1.945

2.25 × 107

(1.35 × 107–3.83 × 107)

4.36 × 109

(1.67 × 109–1.59 × 1010)

ORM-48

0.8333 ± 0.05

18.708

4.07 × 107

(5.39 × 106–6.25 × 108)

2.96 × 109

(2.8 × 108–2.85 × 1013)

ORP-13

0.8333 ± 0.05

25.070

2.10 × 107

(1.74 × 106–3.04 × 108)

9.29 × 108

(1.03 × 108–1.13 × 1013)

ORP-27

1 ± 0.06

23.755

1.68 × 107

(1.97 × 106–1.47 × 108)

4.60 × 108

(6.92 × 107–2.78 × 1011)

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