This study aims to determine the location-specific dosage of N, K fertilization combined with vermicompost so that fertilization can increase the productivity of soybean (Glycine max (L.) Merill) in tidal swamplands. This research is a polybag research carried out in the experimental garden Agrotech Traning Center (ATC), Faculty of Agriculture, Sriwijaya University, Indralaya. This research was…