Simanjuntak P, Manalu CJ. Response of Growth and Production of Shallots (Allium Ascalonicum L) to the Application of Chicken Manure and Volcanic Ash. jrssem [Internet]. 2022Mar.15 [cited 2024Dec.4];1(8):1095-102. Available from: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/129