Role of bacterial symbionts of larvae Oryctes rhinoceros L. And microbial decomposer on composting of empty bunch of oil palm in big hole planting system

Abstract

The purpose of this study was to utilize the bacterial symbionts of Oryctes rhinoceros potency to accelerate decomposition process of empty bunch palm to minimize source of food and pest attack of Oryctes rhinoceros. The application of bacterial symbionts Bacillus sp. and Acromobachter sp. was carried out on empty bunch palm in big hole planting system with treatments P1: Bacillus (10ml/kg) + Trichoderma, P2: Acromobachter (10ml/kg) + Trichoderma, P3: Bacillus + Acromobachter, P4: Bacillus + Acromobachter + Trichoderma, P5: Bacillus + Trichoderma + Molase, P6: Acromobachter + Trichoderma + Molase, P7: Bacillus + Acromobachter + Molase, P8: Bacillus + Acromobachter + Trichoderma + Molase, P9: Control. The result showed that the highest temperature phase in the treatment of P8 (Bacillus + Acromobachter + Trichoderma + Molase) was 40,77°C. The best of C/N ratio was in the treatment of P4 (Bacillus + Acromobachter + Trichoderma) which was 15,84%.