MUHAMMAD JUWANDA, M. J. Efficiency of Nitrogen Fertilization in Shallots (Allium ascalonicum,.L) with the Addition of Cow Manure. Jurnal Online Pertanian Tropik, [S. l.], v. 10, n. 2, p. 1–7, 2023. DOI: 10.32734/jopt.v10i2.9830. Disponível em: https://idjpcr.usu.ac.id/jpt/article/view/9830. Acesso em: 4 aug. 2025.