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Egyptian Journal of Biological Pest Control

Table 2 Time response bioassays of three different HearNPV isolates against Helicoverpa armigera larvae at their respective median lethal concentrations

From: Comparative evaluation of temperate, subtropical, and tropical isolates of nucleopolyhedrovirus against tomato fruit borer, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae)

Isolates

ST50 (days)

Confidence limits 95%

Heterogeneity/degrees of freedom (χ2/df)

p value

HearNPV-IND-K

8.32

8.06–8.98

131.88/1

 < 0.001

HearNPV-IND-J

8.94

8.57–9.30

93.98/1

 < 0.001

HearNPV-IND-B

9.10

8.72–9.47

96.38/1

 < 0.001

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