Larval mortality of B. oleae (%)

2nd instar

3th instar

(Mean ± sd)

(Mean ± sd)

0.5 mg/l

26.6 ± 3.3 a*

17.2 ± 2.6 a’

0.75 mg/l

29.2 ± 1.3 a

22.3 ± 4.1 a’

1 mg/l

69.3 ± 1.8 c

58.2 ± 3.2 c’

1.5 mg/l

88.2 ± 3.36 d

72.4 ± 1.4 d’

Controls

3.25 ± 2.2 e

2.66 ± 2.3 e’