The purpose of this study was to determine the interaction and main effects of NASA guano and POC on the growth and yield of pakcoy plants. This research was carried out at the Experimental Garden of the Faculty of Agriculture, Islamic University of Riau, Jalan Kaharuddin Nasution Km 11 No. 113, Perhentian Marpoyan, Air cold Village, Bukit Raya District, Pekanbaru City. This research was conduc…