OPTIMALISASI PERTUMBUHAN DAN PRODUKSI 1 VARIETAS DAN 3 AKSESI UBI KAYU PADA LAHAN ULTISOL DENGAN PENAMBAHAN CENDAWAN PELARUT FOSFAT (CPF): Optimizing Growth and Production of 1 Variety and 3 Accessions of Cassava on Ultisols with the Addition of Phosphate Solubilizing Fungi (PSF). env. 2025;11(1). doi:10.33019/pp1y8q11