Research Article
Isolation of Insecticidal Constituents from the Essential Oil of Ageratum houstonianum Mill. against Liposcelis bostrychophila Badonnel
Table 3
Contact toxicity of Ageratum houstonianum essential oil and its isolated compounds against Liposcelis bostrychophila.
| | Treatment | LD50 (g/cm2) (95% FL*) | LD90 (g/cm2) (95% FL*) | Slope ± SD | Chi-square (χ 2) |
| | Essential oil | 50.8 (45.7–55.6) | 176.3 (148.6–194.2) | 3.85 ± 0.36 | 10.98** | | Precocene I | 64.0 (57.8–70.3) | 211.9 (189.8–232.5) | 7.19 ± 0.66 | 8.67** | | Precocene II | 30.4 (27.6–33.2) | 105.8 (94.1–116.4) | 8.65 ± 0.81 | 7.45** | | Pyrethrum extract | 19.0 (17.6–20.9) | 68.5 (62.1–75.8) | 2.21 ± 0.17 | 4.27** |
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Fiducial limits, **significant at level.
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