Bioinsecticidal Effect of Origanum vulgare subsp. hirtum (Link) Essential Oil Vapours on Myzus persicae Sulzer in Tobacco and Apis mellifera L.
Keywords:aromatic plants, essential oil, toxicity, aphids, honey bees
The peach leaf aphid Myzus persicae Sulzer is a polyphagous species which causes economic damages to many agricultural crops in Bulgaria and worldwide. The aim of the study was to test the bioinsecticidal effect of the essential oil (EO) vapours of Origanum vulgare subsp. hirtum (Link) on M. persicae in tobacco and Apis mellifera L., as nontarget organism. The determination of the main EO contents was carried out on gas chromatograph. The chemical composition of the O. vulgare subsp. hirtum EO includes the terpenoid carvacrol – 67.4%, ρ-cymene – 13.7%, cineole + γ-terpinene – 8.3%, and α-pinene + β-pinene – 4.5%. The study was conducted in laboratory conditions. The study established efficacy of the oregano EO vapours against the peach leaf aphid. The findings indicated 100% efficacy of the O. vulgare subsp. hirtum EO vapours against M. persicae at a dose of 2 μl/l–1 air and 3 μl/l–1 air; 63.6% efficacy at 1 μ l/l–1 air and 31.2% at 0.5 μl/l–1 air. No phytotoxicity of the tobacco plants was found at any of the tested doses. The minimum dose with the highest efficacy tested on honey bees was also toxic to them.
How to Cite
LicenseCopyright (c) 2023 Proceedings of the Bulgarian Academy of Sciences
Copyright (c) 2022 Proceedings of the Bulgarian Academy of Sciences
Copyright is subject to the protection of the Bulgarian Copyright and Associated Rights Act. The copyright holder of all articles on this site is Proceedings of the Bulgarian Academy of Sciences. If you want to reuse any part of the content, please, contact us.