ASHARI, D. S.; SUGIYANTA, S. The Roles of Bio Organic and NPK Compound Fertilizer to Growth and Production of Four Year Old Oil Palm. Asian Journal of Applied Sciences, [S. l.], v. 5, n. 5, 2017. Disponível em: https://ajouronline.com/index.php/AJAS/article/view/4978. Acesso em: 28 jan. 2022.