Table 2.
Comparative toxicities of four insecticides against three localities of P. americana (L) in topical application method
| Insecticides | Localities |
LC50 (µl/ml) |
95% confidence Limits |
Fit of probit line
|
RR | |||
|---|---|---|---|---|---|---|---|---|
| Lower | Upper | Slope ± SE | χ2 (df) | P | ||||
| Imidacloprid 5% SC | SMH | 2.712 | 2.024 | 3.622 | 2.353±0.579 | 2.698 (4) | P< 0.001 | 2.00 |
| KTCH | 1.966 | 1.304 | 2.554 | 2.321±0.562 | 1.701 (4) | P< 0.001 | 1.50 | |
| KLPT | 1.318 | 0.714 | 1.771 | 2.419±0.585 | 3.091 (4) | P<0.001 | 1.00 | |
| Fipronil 2.5% EC | SMH | 0.362 | 0.220 | 0.554 | 1.552±0.294 | 0.435 (4) | P< 0.001 | 3.93 |
| KTCH | 0.176 | 0.092 | 0.275 | 1.508±0.289 | 1.960 (4) | P< 0.001 | 1.91 | |
| KLPT | 0.092 | 0.038 | 0.156 | 1.483±0.305 | 1.646 (4) | P< 0.001 | 1.00 | |
| Deltamethrin 2.5% SC | SMH | 4.145 | 2.540 | 5.879 | 1.938±0.352 | 3.252 (4) | P< 0.001 | 2 |
| KTCH | 2.500 | 1.226 | 3.874 | 1.632±0.321 | 2.951 (4) | P< 0.001 | 1.21 | |
| KLPT | 2.067 | 0.930 | 3.298 | 1.602±0.323 | 2.148 (4) | P< 0.001 | 1.00 | |
| DDVP 50% EC | SMH | 28.556 | 24.650 | 32.292 | 6.028±1.097 | 3.680 (4) | P< 0.001 | 1.42 |
| KTCH | 26.388 | 22.293 | 30.380 | 5.018±0.885 | 4.164 (4) | P< 0.001 | 1.31 | |
| KLPT | 20.138 | 16.119 | 23.900 | 4.035±0.695 | 6.600 (4) | P< 0.001 | 1.00 | |