Abstract
Atlas beetle is identified as one of minor pest in oil palm plantation. It feeds on oil palm fronds and some cases on the fruits. The beetle mass trapping has been conducted at an immature oil palm plantation in the peatland area located in Indragiri Hulu Region, Riau Province, Indonesia. In a total 2,963.89 ha area, the 10 dm3 dimension trap installed in the block boundaries every 100 m. The trap developed by 100 g of pineapple pieces which placed into a hanging container. The result showed from daily observation for 6 mo (June-Nov 2017), the trap caught 650,691 individuals. The highest catch number in the July-September period with total 39.96 individu/trap/day then decreased until the end of November with a total of 6.30 individu/trap/day.The result showed that the sex ratio trapped beetle is 1:1. The damage rate of atlas beetle decreased from 23.08% to 10.14% during trap application.
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