ABSTRACT THE ROLE OF BAMBOO ROOT PGPR BIOLOGICAL FERTILIZER AND RICE STRAW MULCH CONCENTRATION ON THE GROWTH OF BIRD’S CHILI PLANTS (Capsicum frutescens L) Muhammad Mughni Utomo Email : mughni.utomo25@gmail.com The development and improvement of chili pepper production can be achived by using biofertilizers such of bamboo root PGPR and by adding organic materials to the soil in the for…