Table 2 Median lethal time (LT50) of Spodoptera littoralis calculated at the concentrations of 4.3 × 1010 and 1.2 × 1011 ob/ml for second and fourth larvae instars, respectively
The second instar larvae (at concentration 4.3 × 1010 (ob/ml)) | The fourth instar larvae (at concentration 1.2 × 1011 (ob/ml)) | ||||
|---|---|---|---|---|---|
LT50 (CI) days | Slope ± SE | X2 | LT50 (Cl) days | Slope ± SE | X2 |
5.5 (5–5.9) | 4.4114 ± 0.4808 | 2.87 | 6.2 (5.7–6.7) | 4.1944 ± 0.4736 | 4.64 |