Résumé:
The aim of this study was to investigate the chemical composition and evaluate the insecticidal formulation of essential oils from Artemisia herba-alba and Artemisia Absinthium (aerial parts) in Algeria using the microencapsulation technique. Fumigation toxicities were assessed against a major stored-product beetle: Tribolium castoreum. The chemical composition of both oils was characterized by qualitative and quantitative differences. The main common compounds of Artemisia. Herba Alba were camphor, 1,8-cineole (eucalyptol), camphene, α-thujone, β-thujone, and chrysanthemum, while β-thujone was the characteristic component of A. Absinthium oil.
The results indicated that both oils exhibited potential fumigant toxicity. Fumigation bioassays showed that the essential oil of A. herba-alba was more toxic against T. castoreum. The LC₅₀ and LC₉₅ values revealed that the essential oil of Artemisia Herba-Alba was more effective than that of Artemisia A absinthium.
Our work highlights the importance of using microencapsulated formulations of Artemisia essential oils in Algeria, both as fumigants and as bioinsecticides against economically important stored-product pests
