Chemical components and insecticidal effects of essential oils from three lavender cultivars against adult Sitophilus granarius (L., 1758) (Coleoptera: Curculionidae)

The study was conducted to determine the insecticidal and behavioral effect of essential oils (EOs) extracted from three lavender cultivars, Hemus, Raya Yubileina, against adult stage Sitophilus granarius (L., 1758) (Coleoptera: Curculionidae) under laboratory conditions. contact, fumigant repellent effects plant EOs were investigated possible germination inhibitory on wheat evaluated. samples using a Neo-Clevenger type apparatus where material is subjected hydro distillation. chemical constituents detected by gas chromatography-mass spectrometry. experiments conditions in 2019 2020. As result study, it determined that activity changed according cultivars. While LC90 value Hemus as 0.157 µl/ml air, this recorded 0.139 air 0.118 respectively. Six h after treatment, highest 86% at 0.05 µl/cm2 with Yubileina. Main components each cultivar were: linalool (36.0%), linalyl acetate (24.2%) lavandulyl (5.86%); (28.5%), (23.1%) (6.59%); Raya, (42.5%), (30.0%) ɑ-terpineol (5.45%). There no negative any oils. These results show could be useful for control S. .