Rayyana, R. et al. 2023. The Effect of NPK Fertilizer and Tofu Dregs Organic Fertilizer on The growth of Land Kale Plants (Ipomea reptans Poir). Jurnal Biologi Tropis. 23, 4 (Sep. 2023), 12–18. DOI:https://doi.org/10.29303/jbt.v23i4.5503.