Fatoni, A., Muhfahroyin, M., Sujarwanta, A., Widowati, H. and Sutanto, A. 2020. The Effectiveness of Coffee Leather Organic Fertilizer on The Productivity of Red Spinach (Amaranthus Tricolor L.) . Jurnal Penelitian Pertanian Terapan. 20, 3 (Dec. 2020), 198-203. DOI:https://doi.org/10.25181/jppt.v20i3.1678.