Table 2 Toxicity against B. brassicae after an exposure of 24, 48 and 72 hours by the contact/aphid dip method.

From: Insecticidal activity and biochemical composition of Citrullus colocynthis, Cannabis indica and Artemisia argyi extracts against cabbage aphid (Brevicoryne brassicae L.)

Plants Extract

Time (h)

LC50 (mg mL−1)

95% F.L.

Slope ± SE

χ2

Lower

Upper

CCL

24

2.88

0.03

4.29

0.59 ± 0.23

0.51

48

2.35

0.62

4.01

1.01 ± 0.26

0.77

72

1.96

0.14

3.88

0.72 ± 0.24

0.80

CIL

24

12.1

8.86

19.3

1.07 ± 0.23

0.06

48

8.03

4.37

13.8

0.79 ± 0.24

0.53

72

2.87

0.10

5.75

0.65 ± 0.25

0.14

ATL

24

5.62

2.31

8.91

0.72 ± 0.22

0.98

48

4.28

1.09

7.13

0.72 ± 0.23

0.38

72

0.22

0.01

1.31

0.58 ± 0.27

0.30

  1. Note: LC50 (Lethal concentration); S.E. (standard error); χ2 (chi-square); F.L. (fiducial limit). (C. colocynthis), CIL (C. indica) and ATL (A. argyi).
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