The research objective was to determine the interaction and main effects of petroganic and hormonal fertilizers on the growth and production of bitter melon plants. This research was conducted at the experimental garden of the Faculty of Agriculture, Riau Islamic University, Jalan Kaharudin Nasution KM 11 No. 113 Marpoyan Air Cold Village, Bukit Raya District, Pekanbaru. The research was conduc…