Damage Reduction Effect and Attracted Distance by Aggregation Pheromone Trap of the Bean Bug, Riptortus pedestris (Fabricius), (Hemiptera: Alydidae) in Soybean Fields
2012
Park, C.G., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Yum, K.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Jung, J.K., National Institute of Crop Science, RDA, Suwon, Republic of Korea
The lure-distance of Riptortus pedestris aggregation pheromone was elucidated and the damage mitigation effect by mass trapping of R. pedestris was examined in commercial soybean fields. The recaptured ratio showed that 76.1% of total recaptured individuals were lured within 40 m and 89.0% of total recaptured adults were arrested in the lower 80 m. There is not much difference in the number of recaptured individuals according to the location of installed traps in the experiment. There was linear correlation between the total installed number of traps and the total number of trapped individuals in commercial soybean fields. and the highest yield (261.8 g/10 stems) was investigated in the field that had installed a pheromone trap per 770 ㎡. No relationship wasf found between the covered areas of a pheromone trap for mass trapping and yield loss. The ratio of type A seed (healthy) was higher in the field that installed a trap per 385 ㎡ and 770 ㎡ (around 62%) and type B seed (showing distinct injury marks) was lower in the same fields (around 27%). From this result, we could reduce slightly the damage of soybean seeds by the mass trapping of Riptortus pedestris adults with an aggregation pheromone trap per 385~770 ㎡ area range.
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