Murni, Andarias Makka, Julie Mae Pasuquin, and Christian Witt. “Site Specific Nutrient Management for Maize on Ultisols Lampung”. JOURNAL OF TROPICAL SOILS 15, no. 1 (April 9, 2018): 49–54. Accessed July 29, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/27.