الفهرس 
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Abstract
This study was carried out to determine the toxicity of four volatile oils of Wild mint (Mentha longifolia L.), Marjoram (Origanum majorana L.), Lemon (Citrus aurantiifolia christm.), Orange (Citrus sinensis L.) and phospheine, against the adult of the Broad Bean Beetle Bruchidius incarnatus (Boh) (coleopteran:Bruchidae). The volatile oils and phosphine can be arranged according to their toxic effect against B. incarnatus adults, 24h post treatment in ascending order as follows: Phosphine, Marjorma, Wild mint, Lemon and Orange. Their LC50’s were 0.0884 mg/l, 40.266, 40.465, 117.357 and 243.023 mg/l, respectively. In addition, the binary mixtures of wild mint with Marjoram volatile oils at all ratios 1:1, 1:2 and 2:1 exhibit potentiation effect. On the other hand, the binary mixtures of Lemon with Orange/Marjoram, showed antagonistic effect. The mixture of Wild mint with Lemon showed potentiation effect at the ratio of 2:1 and the same effect at the ratio of 1:1 in the mixture of Wild mint with Orange. The mixture of Wild mint with Lemon and Wiled mint /Orange showed antagonistic effect at the ratios of 1:1 and 1:2, respectively. But the mixture of Wild mint with Orange gave an additive effect at the ratio of 2:1, against adult of B. incarnatus, 24h post treatment. Concerning the binary mixtures of phosphine and the four volatile oils gave potentiation effect.
The mean number of eggs from the first generation increased from the treated generation of volatile oils. On the other hand, the hatchability percentage and the percentage of emerging Beetles of the second generation were have increase from the first generation, where