Sebayang, Lukas, and Mieke Afni Hardyani. 2021. “Potato Cultivation Technology for Increasing Famers Income in Area Exposed to the Eruption of Mount Sinabung, Karo District”. Jurnal Online Pertanian Tropik 8 (2):98-106. https://doi.org/10.32734/jopt.v8i2.6608.