ABSTRACT This study aims to determine the interaction of OPEFB compost and NPK fertilizer, single factor OPEFB compost, single factor NPK fertilizer on okra plant growth and yield and to obtain the best dose of OPEFB compost and NPK fertilizer.This research was conducted at the experimental garden of the Faculty of Agriculture, University of Riau in Maret-Juni 2020 in the form of experiments mu…