OPTIMIZATION OF NPK FERTILIZER DOSAGE WITH THE ADDITION OF BIOFERTILIZERS IN IMMATURE OIL PALM (Elaeis guineensis Jacq.) PLANTS. SJN [Internet]. 2024 Nov. 15 [cited 2025 Apr. 4];1(2). Available from: https://ejournal.iaar.or.id/surjan/article/view/9