2012•Biological Agriculture & HorticultureRequires access
Response ofTribolium castaneum(Coleoptera: Tenebrionidae) andSitophilus oryzae(Coleoptera: Curculionidae) to potential insecticide derived from essential oil ofMentha arvensisleaves
Bhuwan Bhaskar Mishra, Swati Tripathi, C. P. M. Tripathi
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Abstract
The essential oil of Mentha arvensis L. was extracted by water distillation method and the insecticidal properties of M. arvensis were evaluated under laboratory conditions. The oil showed repellency and toxicity against T. castaneum (Coleoptera: Tenebrionidae) and S. oryzae (Coleoptera: Curculionidae). The result revealed that this essential oil strongly repels T. castaneum and S. oryzae even at low concentration, but its repellency was more marked towards S. oryzae. The essential oil of M. arvensis showed toxic effects against insect pests. The toxicity of newly molted 4th instars larvae of T. castaneum and 10-day-old-adults of T. castaneum and S. oryzae increased with concentration from 15 to 30 μL/100 μL and with exposure time 24 to 48 h. The LC50 against the larvae of T. castaneum was 18.685 μL at 48 h exposure. The LC50 against T. castaneum and S. oryzae adults were 22.759 μL and 21.788 μL at 48 h exposure, respectively.