Table 5. LD 50 values of the different extracts of Taxus baccata and Populus nigra against 1st instar larvae (L1) of Thaumetopoea pityocampa : LD50, lethal dose causes the death of 50% of a group of test insect; R2, Coefficient of determination; TMP, Taxus Methanol Pure; TMC, Taxus Methanol Chloroform; TME, Taxus Methanol-Water; PMP, Populus Methanol Pure; PMC, Populus Methanol Chloroform; PME, Populus Methanol-Water.
Tabla 5. Valores LD50 de los diferentes extractos de Taxus baccata y Populus nigra para larvas en estado 1 (L1) de Thaumetopoea pityocampa: LD50, la dosis letal causa la muerte del 50% de un grupo de insectos sometido a ensayo; R2, coeficiente de determinación; TMP, metanol de tejo puro; TMC, cloroformo-metanol de tejo; TME, metanol de tejo-agua; PMP, metanol de chopo puro; PMC, cloroformo-metanol de chopo; PME, metanol de chopo-agua.
| Treatment | R2 | DL50(%) |
| PMP | 0.996 | 0.18 |
| PMC | 0.928 | 0.37 |
| PME | 0.993 | 0.75 |
| TMP | 0.994 | 0.80 |
| TMC | 0.972 | 0.93 |
| TME | 0.801 | 0.88 |