Research Article
Fumigant Compounds from the Essential Oil of Chinese Blumea balsamifera Leaves against the Maize Weevil (Sitophilus zeamais)
Table 2
Fumigant toxicity of Blumea balsamifera essential oil and its constituent compounds against Sitophilus zeamais adults.
| Treatments | Conc. | Mortality | LC50 (mg/L air) | (mg/L air) | Slope ± SE | Chi square () | (%) | () | (95% FL) | (95% FL) |
| | 20.00 | 98.0 ± 1.22 | | | | | | 14.29 | 72.0 ± 3.43 | | | | | Borneol | 10.20 | 48.0 ± 3.41 | 29.64 (27.39–31.98) | 40.11 (37.67–43.24) | 2.37 ± 0.32 | 15.34 | | 7.29 | 34.0 ± 2.34 | | | | | | 5.21 | 8.0 ± 1.22 | | | | |
| | 20.00 | 88.0 ± 3.43 | | | | | | 13.33 | 65.0 ± 2.45 | | | | | Camphor | 8.89 | 47.0 ± 1.43 | 21.67 (19.74–23.25) | 43.54 (39.76–47.32) | 2.18 ± 0.25 | 8.39 | | 5.92 | 36.0 ± 1.32 | | | | | | 3.95 | 10.0 ± 2.32 | | | | | | 3.00 | 95.0 ± 1.34 | | | | |
| | 1.50 | 78.0 ± 3.43 | | | | | 1,8-Cineole | 0.75 | 56.0 ± 2.45 | 2.96 (2.76–3.21) | 5.46 (4.78–5.93) | 1.72 ± 0.15 | 9.48 | | 0.38 | 35.0 ± 1.56 | | | | | | 0.19 | 12.5 ± 0.78 | | | | |
| | 10.00 | 95.0 ± 2.34 | | | | | | 5.00 | 84.0 ± 1.68 | | | | | α-Terpineol | 2.50 | 62.0 ± 1.87 | 7.45 (6.51–8.32) | 12.18 (10.79–13.23) | 2.13 ± 0.21 | 11.79 | | 1.25 | 38.0 ± 1.54 | | | | | | 0.66 | 13.0 ± 0.89 | | | | |
| | 8.00 | 94.0 ± 3.43 | | | | | | 4.00 | 72.0 ± 2.43 | | | | | 4-Terpineol | 2.00 | 48.0 ± 1.45 | 4.79 (4.31–5.22) | 8.37 (7.67–9.27) | 2.07 ± 0.19 | 3.14 | | 1.00 | 32.0 ± 1.67 | | | | | | 0.50 | 7.0 ± 0.56 | | | | |
| MeBr* | — | — | 0.67 | — | — | — |
| | 15.0 | 98.0 ± 2.54 | | | | | | 7.50 | 86.0 ± 1.95 | | | | | Crude oil | 3.75 | 65.0 ± 1.65 | 10.71 (9.76–11.75) | 18.82 (17.13–20.67) | 1.77 ± 0.13 | 5.28 | | 1.88 | 42.0 ± 1.44 | | | | | | 0.94 | 16.0 ± 0.99 | | | | |
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MeBr: Methyl bromide; values from Liu and Ho [6].
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