IDENTIFIKASI FUNGI YANG BERKEMBANG PADA BATANG SAWIT (Elaeis guineensis Jacq.) Pasca Penebangan (Identification of fungi that developed in post-harvest oil palm trunk (Elaeis guineensis Jacq.)) - panjaitan, Hisar; Alumni Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155 (Program studi Kehutanan USU, 2013)