دراسة التأثير التأزري لبعض الزيوت النباتية المستساغة في المبيدة البيروثرويدي (آيكون) ضد حشرة خنفساء اللوبيا الجنوبية Callosobruchus maculates (Fab.)(Coleoptera : Bruchidae)

Abstract

Abstract: Aseries of laborotory experiments were conducted to reveal the synergistic effect of some plant oils namely Sesamum indica and Linum usitatissimum on thePyrethroid insecticide(Icon)against adults of Callosobruchus maculates(F.)The results showed that percentages of killing were siynificantly increased with increasing concenterations of the pesticide when used alon or when used as a mixture with oil of(Seasamin indica)or(Linum usitatissimum).LC50 was also calculated for both Insectiside and the mixture of insecticide and oils.It was found that the LC50 sincreased for (0.6)when pesticide alone was used to(0.5) and (0.4) when apesticide was mixed at rate of 1:1 with (Seasamin indica)or(Linum usitatissimum).The results also showed that Seasamin oil was more effective than Linum oil when mixed with the pesticide.The number of eggs laid by Callosobruchus maculates adults treated with either pesticide or the mixture of pesticide and oils, were signiticantly reduced,too.