Abstract
In this study, insecticidal effects of the essential oils obtained from plants Ocimum basilicum L., Rosmarinus officinalis L. and Artemisia dracunculus L. on confused flour beetle (Tribolium confusum du Val., 1863 (Coleoptera: Tenebrionidae)) and bean weevil (Acanthoscelides obtectus (Say), 1831 (Coleoptera: Bruchidae)) adults were tested in laboratory conditions. In this context, T. confusum and A. obtectus adults were exposed to essential oils at 10 and 20 μL/petri doses for 24, 48, 72 and 96 h. All of the essential oils used in the study caused mortalities at different rates in two application doses but end of the 96 h all mortality rates were obtained similar (O. basilicum 98.3%, R. officinalis 98.3%, A. dracunculus 93.3% against T. confusum adults; O. basilicum 100%, R. officinalis 100%, A. dracunculus 100% against A. obtectus adults). It was determined that the effects of essential oils on A. obtectus adults were greater than T. confusum adults. Especially when the dosage was 20 μL, the death rate increased up to over 95% after 96 h for all types. The mortality rates increased with increasing exposure period at the 48, 72 and 96 h. in all applications. The results of the study suggest that essential oils from O.basilicum and R.officinalis could have a potential as control agents against A. obtectus and T.confusum adults under storage conditions.
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