ABSTRACT The research Conducted from August 13 to October 8 2020 For 56 days at UPT Breeding Laboratory, Faculty of Fisheries and Marine Sciene, University of Riau. The method used was exprerimental method and RAL one factor with 4 level of treatment and 3 replications. The treatment level of this study was P0( without plant), P1(10 pakcoy plants/m2), P2(20 pakcoy plants/m2), and P3 (pakcoy p…