Table 3. Residual exposure for three abamectin formulations on lady beetle larvae.
| Time | Formulation | Toxicity regression equation | R2 | LC50 (mg/L) |
95% confidence limit | χ2 (df = 4) |
P |
|---|---|---|---|---|---|---|---|
| 48 h | Abam-PLA-NS | y = 2.47+2.26x | 0.976 | 13.2 | 8.8–19.7 | 4.808 | 0.308 |
| Abam-PLA-Tannin-NS | y = 3.52+1.27x | 0.983 | 14.7 | 7.9–27.3 | 3.395 | 0.494 | |
| Abmectin EC | y = 3.72+0.66x | 0.846 | 83.9 | 23.5–299.8 | 3.162 | 0.531 | |
| 120 h | Abam-PLA-NS | y = 3.03+2.01x | 0.920 | 9.7 | 6.2–15.0 | 7.926 | 0.094 |
| Abam-PLA-Tannin-NS | y = 3.40+1.76x | 0.960 | 8.1 | 5.0–13.6 | 4.303 | 0.367 | |
| Abmectin EC | y = 3.14+1.58x | 0.805 | 15.3 | 9.1–25.6 | 2.376 | 0.667 |