Arbuscular mycorrhizae (AM) play an important role in enhancing phosphorus uptake in organic farming systems. This study aimed to analyze the relationship between soil pH and available phosphorus (P-available) with the population of arbuscular mycorrhizal spores in organic robusta coffee (Coffea canephora) plantations located in Jokoh Subdistrict, Dempo Tengah District, Pagar Alam City. The res…