This study aims to evaluate the effectiveness of mycorrhizal inoculation as a substitution for NPK-Mg fertilizer and its interaction on the growth of oil palm (Elaeis guineensis Jacq.) seedlings at the pre-nursery stage. The research was conducted at PT Kenawan Agro Sejahtera, Ogan Ilir, South Sumatra, from August to November 2025, with analyses carried out at the Plant Physiology Laboratory of…