Observation of Arbuscular Mycorrhizal Fungi (AMF) Spores in Organic and Conventional Coffee FarmsAidil Azhar, Eka Merdekawati, Aris Pramudia, Hiroshi Ehara, Marlisa Ayu Trisia and Lili DahlianiE3S Web Conf., 454 (2023) 02001DOI: https://doi.org/10.1051/e3sconf/202345402001