부산대학교 도서관

Hercinothrips femoralis (O.M. Reuter, 1891) is an important polyphagous pest species that feeds on a variety of ornamental plants and may cause severe damage to them. The species is known to be easily spread by anthropochory. The lethal and protective efficiency of 5 plant extracts was evaluated against adults of H. femoralis in the laboratory. A well-shaken essential oil of a certain concentration was sprayed from a distance of 15 cm into the inner space of a plastic box with leaves and thrips specimens. Standard protective and lethal concentrations and doses of selected oils were specified. The results showed differences in repellency and lethality among essential oil product types and their concentrations. Cinnamon (Cinnamomum verum) oil was identified (p < 0.05) as the most rapid (after 30 min of exposure) and effective biopesticide with the highest protective and lethal effect (PC50 = 0.66%, LC50 = 15,80%) compared with oils from rosemary (Salvia rosmarinus), dill (Anethum graveolens), black pepper (Piper nigrum), and eucalyptus (Eucalyptus sp.). Moreover, the protective effect of rosemary oil (PC50: 28.11%) and the lethal effect of dill oil (LC50: 42.85%) were identified as statistically significant. The application of cinnamon oil is proposed as eco-safe plant protection against H. femoralis, especially in households and indoor spaces, where the use of less toxic biopesticides is environmentally friendly. [ABSTRACT FROM AUTHOR]