Effects of plant volatiles on the feeding and oviposition of Thrips tabaci
The influence was determined of essential oils and their volatile constituents from plant species within the Lamiaceae on the feeding activity and reproduction of adult female onion thrips, Thrips tabaci, using leaf disc bioassays at several concentrations. Application of the essential oil of marjoram, Origanum majorana, at 1% and 0.1% concentration interfered with the feeding activity of onion thrips females and reduced oviposition. Furthermore, oil of rosemary Rosmarinum officinalis, at 1% concentration resulted in decreased feeding damage. The monoterpene 1,8-cineole at both concentrations reduced oviposition rate by about 30%. Assessment of the biological activity of volatile plant chemicals against Thrips tabaci will contribute to the development of antifeedants and oviposition deterrents for use in both biological and integrated pest management strategies
Effects of plant volatiles on the feeding and oviposition of Thrips tabaciThe influence was determined of essential oils and their volatile constituents from plant species within the Lamiaceae on the feeding activity and reproduction of adult female onion thrips, Thrips tabaci, using leaf disc bioassays at several concentrations. Application of the essential oil of marjoram, Origanum majorana, at 1% and 0.1% concentration interfered with the feeding activity of onion thrips females and reduced oviposition. Furthermore, oil of rosemary Rosmarinum officinalis, at 1% concentration resulted in decreased feeding damage. The monoterpene 1,8-cineole at both concentrations reduced oviposition rate by about 30%. Assessment of the biological activity of volatile plant chemicals against Thrips tabaci will contribute to the development of antifeedants and oviposition deterrents for use in both biological and integrated pest management strategies
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