Plant essential oils (EOs) exhibit an array of biological activities against insect pests. However, their negative influences on the pheromonal activity of azuki bean beetle (ABB), Callosobruchus chinensis L., the field-to-storage pest of legumes, have not received research attentions. We evaluated the effects of three EOs and their two major components on the attractiveness of male ABBS to synthetic homofarnesal (2E- : 2Z-homofarnesal = 6:4) using Y-tube olfactometry in laboratory and rocket traps in the semi-open vinyl house. The tested EOs of Illicium verum, Croton anisatum and Gaultheria fragrantissima as well as the major components, trans-anethole and methyl salicylate ascertained significant negative effect against homofarnesal both in Y-tube olfactometry and in semi-open vinyl house tracing out a new opportunity of integrating them in ABB management programs both in field and storage.

• Kashinath Chiluwal(Division of Applied Life Science (BK21+ Program)/ Institute of Agriculture and Life Science, Gyeongsang National University, Korea, Nepal Agricultural Research Council (NARC), Kathmandu, Nepal)
• Junheon Kim(Forest Insect Pests and Disease Division, National Institute of Forest Science, Korea)
• Soon Do Bae(Department of Southern Area Crop Science, National Institute of Crop Science, Korea)
• Gwang Hyun Roh(Agroecosystem Management Research Unit, Agricultural Research Service, USDA)
• Eun Ji Lee(Division of Applied Life Science (BK21+ Program)/ Institute of Agriculture and Life Science, Gyeongsang National University)
• Chung Gyoo Park(Division of Applied Life Science (BK21+ Program)/ Institute of Agriculture and Life Science, Gyeongsang National University)