PENGARUH UMUR POHON AREN (Arenga pinnata MERR) TERHADAP PRODUKSI NIRA DI DESA PULANTAN KECAMATAN AWAYAN KABUPATEN BALANGAN PROVINSI KALIMANTAN SELATAN This study aims to determine the effect of age of palm trees (Arenga pinnata Merr) to the amount of juice per day production. The benefits of...