Table 1. Fumigant toxicity of M. alternifolia essential oil against S. zeamais adults.
| Dose (mg/L air) | Corrected mortality(%) | ||
|---|---|---|---|
| 24h | 48h | 72h | |
| 5.39 | 7.78±5.09 e a | 12.22±2.94 e | 22.73±4.10 e |
| 6.28 | 20.00±5.77 d | 27.78±2.22 d | 43.19±1.14 d |
| 7.48 | 44.44±5.09 c | 57.8±2.94 c | 67.05±1.14 c |
| 9.56 | 62.22±6.94 b | 71.11±1.11 b | 80.68±3.00 b |
| 11.97 | 82.22±2.94 a | 85.56±2.94 a | 92.04±1.14 a |
| LC50 b = 8.42 | LC50 = 7.70 | LC50 = 6.78 | |
| 95% FL c = 8.05–8.84 | 95% FL = 7.35–8.05 | 95% FL = 6.39–7.12 | |
| χ2 d = 3.51 | χ2 = 7.15 | χ2 = 3.37 | |
The mean value of corrected mortality (calculated from three independent experiments) was compared and separated using the Scheffe’s test with a p value < 0.05. The LC50 values were subjected using the Probit analysis.
a Means within a column followed by the same letters are not significantly different (p < 0.05);
b 50% of lethal concentration (mg/L air);
c Fiducial limits;
d Chi-square value.