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
| Number of IJs/larva | 100% larval mortality (h) | |||
|---|---|---|---|---|
| 1st instar larva | 2nd instar larva | 3rd instar larva | 4th instar larva | |
| 50 | 45 | 48 | 70 | 95 |
| 100 | 41 | 44 | 70 | 91 |
| 150 | 24 | 24 | 66 | 70 |
| 200 | 24 | 24 | 48 | 48 |
| r= | − 0.92* | − 0.93* | − 0.86* | − 0.96* |