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Table 1 Correlation between different concentration of infective juveniles (IJS) of Heterorhabditis pakistanensis and period of larval mortality of different instars of Pieris brassicae under laboratory conditions

From: Efficacy of entomopathogenic nematodes against the cabbage butterfly (Pieris brassicae (L.) (Lepidoptera: Pieridae) infesting cabbage under field conditions

Number of IJs/larva100% larval mortality (h)
1st instar larva2nd instar larva3rd instar larva4th instar larva
5045487095
10041447091
15024246670
20024244848
r=− 0.92*− 0.93*− 0.86*− 0.96*