The use of pre-mixture pheromone for controlling rhinoceros beetle and weevil stem borer in oil palm plantation

Abstract A field experiment was conducted to assess the efficacy of pre-mixture pheromone formulation containing ethyl-4-methyl octanoate and 4-methyl-5-nonanol against rhinoceros beetle weevil stem borer. Four doses pheromone, i.e., 1 mL/2 ha, mL/3 mL/4 mL/8 were tested following a randomized block design with five replications. mock treatment using mL pure water used as comparison. The result showed that could attract adult males females recommended dose (1 ml/2 ha), predicted, more effective in trapping targeted pests, which number trapped 163.35 beetles/trap (equal 8,168 beetles per 100 ha area) 6.95 weevils/trap 348 weevils area), respectively. Each pest’s male female at approximately 1:1 ratio. suggests potency for controlling population borer oil palm plantations.