Zahrah S, Kustiawan N. Applications of Oil Palm Ash and Various Types of Organic Fertilizer on Acid Soil (Ultisol) for Onion (Allium ascalonicum L). JUATIKA [Internet]. 2022Jul.1 [cited 2025Apr.26];4(2):169-83. Available from: https://ejournal.uniks.ac.id/index.php/JUATIKA/article/view/2315