Combinational Effect of Rumex tingitanus (Polygonaceae) Hexane Extract and Bacillus thuringiensis  δ-Endotoxin against Spodoptera littoralis (Lepidoptera: Noctuidae)

Table 3

Lethal concentrations (LC₅₀ and LC₉₀) of R. tingitanus hexane extract (mg g⁻¹) and B. thuringiensis delta-endotoxin BLB250 (μg g⁻¹) against S. littoralis larvae.

Instar larvae	LC50 (mg g^-1)	LC90 (mg g^-1)
RtHexF
1st instar	2.56 ± 0.56	6.02 ± 1.41
2nd instar	2.95 ± 0.65	6.65 ± 1.73
BLB250	LC50 (g g^-1)	LC90 (g g^-1)
2nd instar	56.3 ± 5.83	-