YAMIN, Muhammad; ISMAIL, Wan Ishak bin Wan; KASSIM, Muhamad Saufi bin Mohd; AZIZ, Samsuzana Binti Abd; AKBAR, Farah Naz; SHAMSHIRI, Redmond R.; IBRAHIM, Muhammad; MAHNS, Benjamin. Modification of colorimetric method based digital soil test kit for determination of macronutrients in oil palm plantation. International Journal of Agricultural and Biological Engineering, [S. l.], v. 13, n. 4, p. 188–197, 2020. Disponível em: https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5694. Acesso em: 26 dec. 2025.