Abstract
The aim of this research was to determine chemical composition and insecticidal activity of the essential oil of Pelargonium hortorum Bailey (Geraniaceae) flowering aerial parts against the booklouse (Liposcelis bostrychophila Badonnel) and maize weevils (Sitophilus zeamais Motschulsky). The essential oil of P. hortorum flowering aerial parts was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 36 components of the essential oil were identified. The principal compounds in the essential oil were 1,8-cineole (23.01%), α-terpineol (13.22%), α-pinene (8.13%) and camphor (8.12%) followed by 4-terpineol (4.63%), β-myrcene (4.56%) and β-caryophyllene (4.08%). The essential oil exhibited contact toxicity against L. bostrychophila and S. zeamais with LD50 values of 149.78 μg/cm2 and 14.41 µg/adult, respectively. The essential oil also possessed fumigant toxicity against L. bostrychophila and S. zeamais adults with LC50 values of 1.31 mg/L air and 7.22 mg/L air, respectively. The results indicated that the essential oil of P. hortorum showed potential in terms of contact and fumigant toxicity against grain storage insects. Key words: Pelargonium hortorum, Liposcelis bostrychophila, Sitophilus zeamais, contact toxicity, fumigant, essential oil composition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
