The purpose of this research was the Cocoon Production and Viability of Pontoscolex corethrurus Fr. Mull on various concentrations of Sevin insecticide to determine the production and viability of cocoons produced by earthworm Pontoscolex corethrurus Fr. Mull at various concentrations of the insecticide Sevin. This research was conducted from March 2020 to April 2020. The research design used a…