Insecticidal activity of Francoeria crispa (Forssk.) extract on the cotton leafworm, Spodoptera littoralis (Boisd.)

Document Type : Original Article

Authors

1 Plant Protection Department, Fac. of Agric. , South valley Univ., Sohage Egypt.

2 FIavour& Aromatic and Chern. Department, National Research Center, Dokki, Egypt

10.21608/jpces.2003.459439

Abstract

The effect of different concentrations of Francoeria crispa (Fam.: Compositae) on the 2nd and instar larvae of Spüoptera littoralis was studied. The crude extract was also identified using GC-MS. The study revealed that the ethyl acetate extract of F. crispa was highly toxic against the 2nd and 4d1 instar larvae of S. littoralis. The 2nd instar larvae were more susceptible (LC30 = 2.41 mg / ml) than the 4 instar larvae C.C30 = 9.73 mg / ml). Increasing the concentration caused an increase in mortalities among larva of both instars. The latent biological effect of the tested extract exhibited larval mortality and deformation in both pupae and adult stages. Results also showed that the crude was mainly characterized by high concentration of total terpene compounds (89.778 %).

Keywords

Journal of Pest Control and Environmental Sciences
Volume 11, Issue 1
June 2003
Pages 121-133

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