International Journal of Oil Palm
International Journal of Oil Palm (IJOP) is an online and print mode, a peer-reviewed research journal published by Indonesian Oil Palm Society (Masyarakat PerkelapaSawitan Indonesia, MAKSI), it provides a global publication platform for researcher, scholars, academicians, professionals and students engaged in research in oil palm industries. The main aim of IJOP is to become the world’s leading journal in oil palm that is preferred and trusted by the community through publishing authentic, peer-reviewed and scientifically developed research articles of international caliber. The journal is published three times in a year, 6-10 papers per publication, and the language of the journal is English. JOURNAL SCOPE IJOP publishes research papers in the felds of soil and crop fertilizer application, seedling preparation, cover crop management, leaf pruning, weed control, control of pest and diseases, insect pollinators management, water management, intercropping, cattle oil palm integration, environmental studies, harvesting technology, IT remote sensing GPS application, mechanization, sustainability standards, policy studies, social and economic studies, smallholders empowerment, palm oil mill improvement, biomass utilization, carbon footprint, water footprint, market studies, refinery, food and nutrition technology (oleofood, food safety, pharmaceutical, and nutraceutical) and also management of soil preparation, inorganic and organic safety, oleochemicals, downstream industry development, supply chain, and market studies. The published articles can be in the form of research articles, review paper or short communications which have not been published previously in other journals (except in the form of an abstract or academic thesis/dissertation or presented in seminar/conference).
Articles
73 Documents
<![CDATA[Slow Release Granular Biosilica Fertilizer for Peatland Oil Palm Cultivation ]]>
<![CDATA[Luis Ibanez]]>;
<![CDATA[Jannati, Mayada]]>
<![CDATA[ International Journal of Oil Palm Vol. 8 No. 2 (2025) ]]>
Publisher : <![CDATA[Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI) ]]>
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DOI: 10.35876/ijop.v8i2.140
<![CDATA[Indonesia’s tropical peatlands, covering over 14.9 million hectares, are critical for palm oil production but face severeagronomic constraints due to extreme acidity (pH 3.0–4.5), high water retention, low nutrient availability, and poor cation exchange capacity (CEC < 20 cmol(+)/kg). This study develops a slow-release granular biofertilizer tailored for oil palm grown in peat soils. The formulation integrates biosilica derived from calcined empty fruit bunch (EFB) ash, palm biochar, nutrient-rich fermented oil palm biomass, andAzotobacter sp. Biosilica was obtained by calcining EFB ash at 800°C for 4 hours, followed by acid leaching with 1% HCl, dissolution in 2 M NaOH for 2 hours, and precipitation using 3 M NH?OH at 50 °C until reaching neutral pH. The resulting amorphous silica was driedand blended with biochar and 5% cassava starch binder to produceporous granules. These were enriched with Azotobacter sp. (10?CFU/g) and composted biomass as sources of slow-releasing organic NPK. Field-simulated trials in peat soils showed that the formulationraised soil pH by 0.8–1.2 units, improved CEC by up to 54%, andenhanced nutrient uptake: nitrogen by 49.7%, phosphorus by 16.2%, and potassium by 35% compared to controls. The granules maintained structural integrity under saturated conditions and released nutrientssteadily over 30–45 days, aligning with crop demand while minimizing leaching losses. This innovative, peat-specific formulation addresses key soil limitations by improving nutrient retention, buffering acidity, and introducing biological nitrogen fixation. It offers a scalable and eco-compatible solution to enhance the sustainability and productivity of palm plantations on degraded peatlands.]]>
<![CDATA[The Effect of Organic and Biological Fungicides on the Development of Ganoderma Fruiting Bodies ]]>
<![CDATA[Widiastuti, Happy]]>
<![CDATA[ International Journal of Oil Palm Vol. 8 No. 2 (2025) ]]>
Publisher : <![CDATA[Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI) ]]>
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DOI: 10.35876/ijop.v8i1.143
<![CDATA[Ganoderma sp. is the main pathogen of oil palm that also attacks other plants such as rubber, eucalyptus, and acacia. Aside from being a pathogen, this fungus also lives saprobically. This study aims to examine the effect of organic fungicide on the growth of Ganoderma mycelia in vitro using Petri dish and the effect of organic fungicide and biofungicide on the development of Ganoderma fruiting bodies that grow on dead breadfruit trees. In testing on breadfruit wood, organic fungicide was given two times while for biological fungicide only one application for 3 consecutive days. The organic fungicide tested was effective in killing the growth of Ganoderma mycelium in vitro. The field test showed that after three weeks of organic fungicide application, the growth of fruiting bodies was inhibited while the control continued to develop and appeared enlarged. The growth of fruiting bodies treated continued to be inhibited until the second application of organic fungicide and this condition continued after application of trichoderma as biofungicide. At H65, there was higher population of bacteria on the control compared to treated fruiting bodies. On the 104th day, it can be isolated Ganoderma from the control but not from the treated fruiting bodies. These indicate that application of organic fungicide within 26th days has inhibited the growth of fruiting bodies and at 3.5 months, Ganoderma died. After 26th days of fruiting bodies breaking, there is new fruiting bodies from breadfruit wood control but not from the treated. This organic fungicide test needs to be specifically carried out again on fruiting bodies that grow on living plant stems to asses the effectivity as organic fungicide.]]>
<![CDATA[Design and Feasibility Analysis of an integrated Zero-Waste Palm Oil biorefinery for Sustainable Aviation Fuel Production and Greenhouse Gas Mitigation ]]>
<![CDATA[Ijop, Admin]]>;
<![CDATA[Fitriyah, Aidatul]]>
<![CDATA[ International Journal of Oil Palm Vol. 8 No. 3 (2025) ]]>
Publisher : <![CDATA[Indonesian Oil Palm Society /IOPS (Masyarakat Perkelapa-sawitan Indonesia /MAKSI) ]]>
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DOI: 10.35876/ijop.v8i3.165
<![CDATA[This study aims to design and assess the technical, environmental, and economic feasibility of an integrated Zero-Waste Palm Oil biorefinery for the production of Sustainable Aviation Fuel (SAF) and other value-added co-products. A quantitative-descriptive approach was employed, integrating process simulation using Aspen Plus V14, Life Cycle Assessment (LCA), and financial modeling to evaluate the system’s performance and sustainability. Primary data were obtained from operational palm oil mills. In contrast, secondary data were sourced from the International Energy Agency (IEA), the International Renewable Energy Agency (IRENA), Statistics Indonesia (BPS), and the Ministry of Energy and Mineral Resources (ESDM) during 2023–2024. The results demonstrate that the integrated biorefinery configuration, which combines thermochemical conversion pathways (pyrolysis, gasification, and Fischer–Tropsch synthesis) with biochemical processes (anaerobic digestion), achieves a mass conversion efficiency of 58.4 percent, net energy efficiency of 72 percent, and an Energy Return on Investment (EROI) of 4.97, exceeding the global bioenergy feasibility threshold of three. The LCA results indicate total Life-cycle emissions of 17.3 g CO?-eq per MJ, representing an 80.6 percent reduction relative to fossil-based Jet A-1 fuel, thereby meeting both CORSIA and RED II sustainability standards. The system also achieves a 95 percent reduction in solid residues, effectively realizing a near-zero-waste operation. Financial modeling reveals a net present value (NPV) of USD 68.2 million, an internal rate of return (IRR) of 17.6 percent, and a payback period of 6.2 years, confirming the project’s economic viability. Overall, this model establishes a scalable pathway for decarbonizing the palm oil industry through circular bioeconomy principles and positions Indonesia as a potential global hub for SAF production aligned with international carbon reduction targets.]]>
