Siregar, Infitar Lifri, Faiz Barchia, and Hasanudin Hasanudin. 2019. “Mustard Greens Growth and Yield Caused by Liquid Organic Fertilizer in Peat Soil”. TERRA : Journal of Land Restoration 2 (1):18-23. https://doi.org/10.31186/terra.2.1.18-23.