1. Yankton AG Service 114 Mulberry St, Yankton, SD 57078 Coordinate: 42.86811,-97.3869 Phone: (605) 665-3691
2. AG-Land Fertilizer 3117 W City Limits Rd, Yankton, SD 57078 Coordinate: 42.91107,-97.41849 Phone: (605) 665-7121