INSECTICIDAL EFFECTS OF TWO PLANT OILS ON Earias insula,a (BOISD.) AND Pectinophora gossypiella (SAUND.) (IEPIDOPTERA)

Document Type : Original Article

Authors

Plant Protection Research Inst., Agric. Res. Center, Dokkì-Giza, Egypt.

Abstract

Laboratory bioassays on the effect of two plant oils, i.e., cotton seed and
safflower oils using different concentrations on E. insulana and P. gossypiella were
investigated. Both oils caused insecticidal effects on the two insect pests. Data
indicated a great reduction in population growth and weight of the larvae and adults
than the control. Cotton seed oil was more effective on both insects than safflower
oil. On the other hand, P. gossypiella was more sensitive than E. insulana for both
oils. The two plant oils caused a reduction ¡n the total soluble protein and fat
contents in the treated insects. Both insects was more susceptible to cotton seed oil
than safflower oil.