Indonesian Journal of Oil Palm Research Volume 34 Number 2 Year 2026 is published by presenting articles: The Effect of Mixing Light Phase Decanter with Crude Oil from The Crude Oil Tank (COT) on CPO Quality, Potential of Soybean (Glycine Max L.) as an Alternative Legume Cover Crop to Mucuna Bracteata for Enhancing Soil Chemical and Biological Properties and Growth Performance of Immature Oil Palm, Investment Feasibility Analysis of Product Diversification Programme Case Study in Sei Aek Pancur Biofertilizer Factory, Life Cycle Cost Assessment of Biogas Utilization POME for Alternative Energy Toward Decarbonization and Sustainability, and Panel Data Regression Analysis on Oil Palm Plantation Development and Community Welfare.