Table 3. Resistance status of amidine, OP, and SPs used at 150 ppm, 250 ppm, 300 ppm and 500 ppm field concentration levels.
| Field concentration levels | |||||
|---|---|---|---|---|---|
| Resistant test | 150 ppm | 250 ppm | 300 ppm | 500 ppm | |
| Developing resistance | - | 21% | - | - | |
| Amidine | Effective reservation | - | 30% | - | - |
| Susceptible | - | 49% | - | - | |
| Resistant | - | - | 4% | - | |
| OP | Developing resistance | - | - | 18% | 21% |
| Effective reservation | - | - | 45% | 32% | |
| Susceptible | - | - | 33% | 47% | |
| Resistant | 7% | - | 13% | - | |
| Pyrethroids | Developing resistance | 12% | - | 30% | - |
| Effective reservation | 37% | - | 34% | - | |
| Susceptible | 44% | - | 23% | - | |