Stages of development

Treatments

2˚ instar

3˚ instar

4˚ instar

5˚ instar

Total

Bt

3.07 ± 0.15a

4.47 ± 0.29a

4.60 ± 0.35a

6.74 ± 0.41a

18.68 ± 0.99 a

Conventional

3.23 ± 0.13a

3.83 ± 0.20a

4.92 ± 0.30a

7.11 ± 0.43a

19.61 ± 0.64 a

CV(%)

11.62

15.98

17.64

13.76

9.82

Nymphal viability (%)

Treatments

2˚ instar

3˚ instar

4˚ instar

5˚ instar

Bt

100a

100a

83.3a

63.3a

Conventional

100a

100a

86.6a

60.0a