This aims of this research was to find out the effect of liquid organic fertilizer (LOF) from Kepok banana stems with Addition of a Bioactivator to The Growth and Yield of Caisim (Brassica juncea L.) in Hydroponic system. The research was conducted at the Hydroponics House, Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir, South Sumatra from June to September 2021. The researc…