Indonesian Journal of Oil Palm Research Volume 33 Number 2 Year 2025 is published by presenting articles: Effect of Drought Stress on Vegetative Growth and Curvularia oryzae Leaf Spot Disease Severity on Oil Palm (Elaeis guineensis) Seedlings, Assessing the Sustainability Level of Oil Palm Smallholders Plantation Business using Application of RAPPO Method in Simalungun District, North Sumatra, Morphological Response of Oil Palm Seedlings to Fertilizer Application, The Impact of Enhancing CPO Productivity and Production Capacity in the CPO Downstream Industry on Indonesian Biodiesel Production, and R&D Expenditures and Firm Performance of Plantation Firms Listed on the Indonesia Stock Exchange (IDX), 2019–2023.