This research aims to determine the main and interaction effects POC of tilapia pond wastewater and NPK 16:16:16 on growth as well production of flowering cabbage (Brassica oleracea var. botrytis L.). Study was carried out at the Experimental Garden of the Faculty of Agriculture, Islamic University Riau, Pekanbaru City from January to April 2023. Research using a Completely Randomized Factorial…