This research aims to determine the response of the main interaction between guano fertilizer and NPK 16:16:16 on the growth of oil palm (Elaeis guineensis Jacq.) seedlings in the main nursery on PMK soil growing media. This research was carried out at the Experimental Garden of the Faculty of Agriculture, Riau Islamic University, Jalan Kaharuddin Nasution Km 11 No. 113, Air Winter Village, Buk…