Research on the effect of the insecticide profenofos on production and viability of earthworm cocoons Pontoscolex corethrurus Fr. Mull has been carried out ffom July to October 2011 took place in Animal Physiology Laboratory Department of Biological Science University of Sriwijaya. This study aims to determine the concentration of profenofos how that affectsthe production of earthworms and decr…