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

Authors : Şaban Kordalı, Memiş Kesdek, Ümran Akkan, Ayşe Usanmaz Bozhüyük
Pages : 127-134
Doi:10.17474/artvinofd.1072055
View : 259 | Download : 1702
Publication Date : 2022-05-16
Article Type : Research Paper
Abstract :In this study, the insecticidal activities of the essential oils extracted from Cuminum cyminum L., Mentha longifolia L. and Allivum sativum L. by hydrodistillation method using the Clevenger apparatus were investigated against Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) and Sitophilus granarius L. (Coleoptera: Curculionidae) adults. The tests were carried out under 25±1°C temperature, 65±5 proportional humidity and 16:8 (light:dark) conditions and doses of 5, 10, 15, 20 µL/petri. The results of the tested essential oils showed that they had insecticidal effect at different rates (between 1.25% and 100%) 96 hours after exposure. Among the essential oils tested, it was determined that the oil of A. sativum showed the highest effect against R. dominica and S. granarius adults, while the essential oils of C. cyminum and M. longifolia showed the lowest effect against each two pests. Additionally, LC50 and LC90 values of these oils against R. dominica and S. granarius adults were seperately recorded. According to LC50 and LC90 values, it was reported that M. longifolia and C. cyminum essential oils were more effective against adults of R. dominica (0.698 µL/insect, LC50 and 4.694, LC90) and S. granarius (0.131 µL/ insect, LC50 and 2.452 LC90), respectively. These datas showed that the mortalities increased depending on the increase in the doses of the tested three plant essential oils. Most importantly, considering all these results, it is seen that these essential oils can be used as a natural and environmentally friendly biopreparate against harmful R. dominica and S. granarius adults in stored grain crops.
Keywords : Uçucu yağlar, Ekin kambur biti, Buğday biti, Ölüm oranları

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