This study aims to determine the interaction and main effect of cow urine POC and NPK 16:16:16 on the growth and production of purple eggplant. This research was carried out at the Experimental Garden of the Faculty of Agriculture, Riau Islamic University, Pekanbaru City, for four months from February to May 2022. This study used a Completely Randomized Factorial Design (CRD). consisting of two…