THE POTENTIAL OF BANANA STEM AS PLANTING MEDIA FOR KANGKUNGS (Ipomoea reptans Poir) AND MUSTARD GREENS Journal title: Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Authors: Avisema Sigit Saputro, Djoko Purnomo, Supriyono Supriyono Subject(s):