Table 2.
Mortality percentages of 3rd instar C. titillator larvae after treatment with different concentrations of camphor, ginger and cinnamon oils
| Conc. (%) | % Mortality of larva | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interval time/h | |||||||||||||||
| 3 h | 6 h | 12 h | 24 h | 48 h | |||||||||||
| 10 | 30 | 50 | 10 | 30 | 50 | 10 | 30 | 50 | 10 | 30 | 50 | 10 | 30 | 50 | |
| Camphor | 6 ± 4 b | 8 ± 2 b | 24 ± 6.7 a | 34 ± 6.7 a | 42 ± 5.8 a | 56 ± 9.2 a | 88 ± 2 b | 90 ± 3.1 b | 100 ± 0 a | 100 ± 0 a | 100 ± 0 a | 100 ± 0 a | 100 ± 0 a | 100 ± 0 a | 100 ± 0 a |
| Ginger | 12 ± 2 a | 12 ± 3.7 a | 18 ± 3.7 a | 20 ± 4.4 a | 20 ± 3.1 a | 26 ± 5 a | 48 ± 5.8 c | 64 ± 5 b | 100 ± 0 a | 66 ± 5 b | 100 ± 0 a | 100 ± 0 a | 96 ± 2.4 a | 100 ± 0 a | 100 ± 0 a |
| Cinnamon | 4 ± 2.5 b | 14 ± 2.4 a | 12 ± 2 a | 4 ± 2.4 b | 18 ± 2 a | 18 ± 3.7 a | 24 ± 5 a | 32 ± 5.8 a | 42 ± 7.3 a | 62 ± 7.3 a | 64 ± 5 a | 60 ± 5.4 a | 92 ± 4.8 a | 92 ± 3.7 a | 94 ± 4 a |
Fifty larvae were treated for each concentration. SE: Standard Error of means (n = 5). Values with different letters (a, b) are significantly (P < 0.05) different within treatments (based on the non-overlapping confidence limits) according to Litchfield and Wilcoxon (1949). No mortalities were observed in the negative control group