The purpose of this study was to determine the effect of Petrobio and NPK Mutiara 16:16:16 fertilizer on the growth and production of tomato plants. This research was carried out in the experimental garden of the Faculty of Agriculture, Riau Islamic University, Jalan Kharudin Nasution, No. 113, Air Cold Village, Bukit Raya District, Pekanbaru City, Riau. The study was conducted for five months,…