“The Effect of Giving NPK and Biochar from Palm Oil Fronds on Palm Oil Main Nursery Seedlings: NPK and Biochar from Palm Oil Fronds on Palm Oil Main Nursery Seedlings”. TROPICAL WETLAND JOURNAL 10, no. 2 (January 27, 2025): 19–29. Accessed September 19, 2026. https://slims.ulm.ac.id/index.php/twj/article/view/132.