Table 5.
Efficacy and larvicidal activities of different pesticides against susceptible P. xylostella at commercially recommended rate.
| Insecticides | Concentration (mg/L) | Larval mortality under different times after treatment (%) (±SD) | ||
|---|---|---|---|---|
| 12 h | 24 h | 48 h | ||
| Control | 0.0 | 0.0 | 0.0 | |
| Cantharidin | 15 | 34.5 ± 1.48b | 82.3 ± 0.78b | 100a |
| Norcantharidin | 30 | 21.3 ± 0.83c | 56.8 ± 0.45c | 95.6 ± 3.24a |
| Azadirachtin | 10.5 | 35.9 ± 1.02b | 56.4 ± 1.26c | 100a |
| Emamectin benzoate | 5 | 90.0 ± 0.51a | 95.0 ± 3.14a | 100a |
| Indoxacarb | 45 | 12.5 ± 0.12d | 52.5 ± 5.47c | 97.5 ± 3.15a |
| Spinosad | 30 | 92.5 ± 0.05a | 100a | 100a |
Data in the same column followed by a different letter are significant (P < 0.05).