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Table 2 Effect of tested compounds on different stages of P. gossypiella and E. insulana treated as newly hatched larvae

From: Impact of conventional insecticides on two bollworms and their indirect effects on the ectoparasitoid, Bracon brevicornis (Wesmael) (Hymenoptera: Braconidae)

Biological aspects

Conc.

Larval stage

Pupal stage

% total mortality and Malformed

Total immature stage

% mortality

Time in days

%mortality and malformed

Time in days

P. gossypiella

Etofenprox

0.07

65.00

23.50 ± 2.10

8.00

12.00 ± 1.10

78.00

35.50 ± 2.10

Chlorpyrifos

0.87

63.00

19.00 ± 1.50

10.00

13.40 ± 0.90

75.00

32.40 ± 2.40

Control

0.00

3.00

14.30 ± 0.90

5.00

7.6 ± 0.3

8.00

21.90 ± 1.90

LSD05

6.82

3.12

1.99

2.22

2.17

2.40

F value

319.2

28.68

469.9

24.04

364.2

120.87

E. insulana

Etofenprox

0.09

71.00

21.40 ± 1.80

5.00

13.0 ± 1.20

76.00

34.70 ± 1.30

Chlorpyrifos

0.73

66.00

17.30 ± 0.90

2.00

11.90 ± 1.30

68.00

29.20 ± 2.40

Control

0.00

4.00

15.30 ± 0.90

4.00

7.80 ± 0.30

8.00

23.10 ± 0.90

LSD05

3.88

1.62

0.24

1.96

2.04

2.13

F value

1129.08

23.87

411.3

21.97

28.12

144.25