SARI, Kemala; SUPRIADI; SIREGAR, Ameilia Zuliyanti; SIBARANI, Muchtar Josua. Survey and Mapping of P Nutrient Status on Paddy Land in Aek Simare Irrigation Area, Laguboti District, Toba Samosir Regency, Northern of Sumatera, Indonesia. Jurnal Online Pertanian Tropik, [S. l.], v. 7, n. 1, p. 25–31, 2020. DOI: 10.32734/jopt.v7i1.3821. Disponível em: https://talenta.usu.ac.id/jpt/article/view/3821. Acesso em: 6 dec. 2025.