Table 4.
Repellent index of essential oils against Callosobruchus chinensis.
| EOs | Conc. (µL/mL) |
Repellent Index (RI); (Hours after Treatment (* Mean ± SD)) | |||
|---|---|---|---|---|---|
| 1 h | 2 h | 3 h | 4 h | ||
|
Tagetes
minuta |
8 | 0.24 ± 0.17 (R) | 0.16 ± 0.26 (R) | 0.04 ± 0.09 (R) | 0.04 ± 0.09 (R) |
| 6 | 0.36 ± 0.09 (R) | 0.40 ± 0.32 (R) | 0.40 ± 0.20 (R) | 0.44 ± 0.26 (R) | |
| 4 | 0.44 ± 0.22 (R) | 0.48 ± 0.39 (R) | 0.64 ± 0.26 (R) | 0.76 ± 0.22 (R) | |
| 2 | 0.56 ± 0.26 (R) | 0.64 ± 0.17 (R) | 0.72 ± 0.11 (R) | 0.88 ± 0.11 (R) | |
| 1 | 0.64 ± 0.17 (R) | 0.73 ± 0.17 (R) | 0.84 ± 0.09 (R) | 0.92 ± 0.11 (I) | |
| Mentha piperita | 8 | 0.08 ± 0.11 (R) | 0.12 ± 0.11 (R) | 0.08 ± 0.11 (R) | 0.08 ± 0.11 (R) |
| 6 | 0.28 ± 0.23 (R) | 0.28 ± 0.23 (R) | 0.32 ± 0.23 (R) | 0.32 ± 0.23 (R) | |
| 4 | 0.64 ± 0.26 (R) | 0.64 ± 0.26 (R) | 0.72 ± 0.46 (R) | 0.76 ± 0.52 (I) | |
| 2 | 0.68 ± 0.30 (R) | 0.72 ± 0.18 (R) | 0.84 ± 0.09 (R) | 0.84 ± 0.22 (I) | |
| 1 | 0.88 ± 0.18 (I) | 0.88 ± 0.18 (I) | 0.88 ± 0.11 (R) | 0.92 ± 0.11 (I) | |
| Mentha spicata | 8 | 0.24 ± 0.17 (R) | 0.20 ± 0.20 (R) | 0.20 ± 0.20 (R) | 0.16 ± 0.22 (R) |
| 6 | 0.40 ± 0.14 (R) | 0.36 ± 0.09 (R) | 0.36 ± 0.09 (R) | 0.28 ± 0.11 (R) | |
| 4 | 0.56 ± 0.22 (R) | 0.60 ± 0.14 (R) | 0.60 ± 0.14 (R) | 0.60 ± 0.32 (R) | |
| 2 | 0.60 ± 0.24 (R) | 0.64 ± 0.17 (R) | 0.64 ± 0.22 (R) | 0.68 ± 0.27 (R) | |
| 1 | 0.84 ± 0.09 (R) | 0.88 ± 0.11 (R) | 0.92 ± 0.11 (I) | 0.92 ± 0.11 (I) | |
* Mean of five replications; R—Repellent (RI less than 1 − SD), I—Indifferent (RI in between 1 − SD and 1 + SD), A—Attractant (RI greater than 1 + SD).