Insecticidal activities of some plant essential oils on Rhyzopertha dominica (F.) and Sitophilus granarius L. (Coleoptera: Bostrichidae and Curculionidae) adults

In this study, the insecticidal activities of essential oils extracted from Cuminum cyminum L., Mentha longifolia L. and Allivum sativum by hydrodistillation method using Clevenger apparatus were investigated against Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) Sitophilus granarius Curculionidae) adults. The tests carried out under 25±1°C temperature, 65±5 proportional humidity 16:8 (light:dark) conditions doses 5, 10, 15, 20 µL/petri. results tested showed that they had effect at different rates (between 1.25% 100%) 96 hours after exposure. Among tested, it was determined oil A. highest R. S. adults, while C. M. lowest each two pests. Additionally, LC50 LC90 values these adults seperately recorded. According to values, reported more effective (0.698 µL/insect, 4.694, LC90) (0.131 µL/ insect, 2.452 LC90), respectively. These datas mortalities increased depending on increase in three plant oils. Most importantly, considering all results, is seen can be used as a natural environmentally friendly biopreparate harmful stored grain crops.