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Rice weevil response to basil oil fumigation
Peter A. Follett,Keao Rivera-Leong,Roxana Myers 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.2
Basil oil, Ocimum basilicum L., is a volatile plant essential oil that is known to have insecticidal activity againststored product pests such as rice weevil, Sitophilus oryzae (L.). Basil oil was diluted in acetone and applied to asponge held inside a tea strainer for fumigations in containers with and without rice. Basil oil fumigation(3 ml, 10% concentration) caused high mortality in adult rice weevils when weevils were exposed in air in asealed 1 L plastic container. However, when basil oil was placed in packaged rice, weevil mortality was lowand reproduction was not affected. Effectiveness of plant essential oil fumigation should be conducted underrealistic conditions to avoid experimental artifacts and misleading results.