Harvesting fresh fruit bunches (FFB) is an important activity in the oil palm plantation industry. This study aimed to analyze the potential content of palm oil at the level of loose fruit that falls on the oil palm circle. Observations were made on five fresh fruit bunches with criteria 1, 3, and 5 respectively loose fruit per bunch that falls on the oil palm circle from oil palm trees that were 22, 16, 12, and 7 years old. All sample fresh fruit bunches were analyzed for potential oil to bunch and oil to wet mesocarp in the analytical laboratory of Bumitama Gunajaya Agro. Content of oil to wet mesocarp in loose fruit 1, 3, and 5 were 48,50 % b, 51,98 % a, and 53,21 % a respectively. While the content of oil to bunch in loose fruit 1, 3, and 5 were 24,19 % a, 25,52 % a, and 25,71 % a respectively. The highest potential for oil content occurs in ripe palm fruit with a level of loose fruit 5 grains per bunch that falls on that oil palm circle. Five grains per bunch on the oil palm circle can be used as an indicator for harvesters to harvest ripe fruit with optimal oil content.
Bagworm is a defoliating insect in oil palm plantations that recently became the main problem since reported can decrease the production significantly. Metisa plana, Mahasena corbetti, Pteroma pendula are types of bagworms can be found in several areas in Indonesia. The objective of this study was to identify bagworm species (Lepidoptera: Psychidae) on oil palm plantation in PT Bumitama Gunajaya Abadi in Pangkalan Bun, Central Kalimantan, Indonesia. A total of 75 bagworms based on survey results from 12 oil palm plant blocks (± 360 hectares) were collected and brought to the Pundu Entomology Laboratory for identification. The bagworm was identified as Manatha conglacia known as an ice cream cone bagworm based on morphological characteristics of the bag. The results of the census revealed that the highest population was found in block W60 with a total population rate of 5.62 larvae of bagworms per frond. This new bagworm report has now become guidance for identification for type of bagworm attack in PT Bumitama Gunajaya Agro, since this bagworm can cause serious damage with defoliating as other types of bagworms.
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