This research is entitled "The interaction and main effects of rice husk charcoal and KCl fertilizer on the growth and yield of shallot plants (Allium ascalonicum L.) on PMK soil". The aim of the research was to determine the interaction and main effects of rice husk charcoal and KCl fertilizer on the growth and yield of shallot plants (Allium ascalonicum L.) on PMK soil. This research was carr…