This study aims to determine the effect of giving some doses of NPK fertilizer and get the best dose on the growth of mangrove seedlings (Rhizopora sp.). This research was conducted in Bantan Tengah Village, Bantan District, Bengkalis Regency, Riau Province. This research was conducted for 3 months starting from February to April 2015. This experiment was conducted experimentally based on Rando…