The aim of this study was to determine the effect of the interaction between NASA POC and oil palm ash on the growth and production of shallots. This research was conducted at the Green House UIRA Farm Agro, Faculty of Agriculture, Islamic University of Riau, Jalan Teropong, No. 62, Kubang Jaya Village, Siak Hulu District, Kampar Regency. This study lasted for 3 months starting from September t…