“Aktivitas Fosfatase Dan Produksi Asam Organik Di Rhizosfer Dan Hifosfer Bibit Kelapa Sawit Bermikoriza *) Phosphatase Activity and Organic Acid Production in Rhizosphere and Hyphosphere of Mycorrhizal Oil Palm Seedling”. E-Journal Menara Perkebunan 71, no. 2 (March 10, 2016). Accessed October 23, 2026. http://mp.iribb.org/index.php/mpjurnal/article/view/164.