ABSTRACT Role Of Plant Growth Promoting Rhizobacteria (PGPR) Concentration And Planting Spacing On Vegetative Growth Of Corn Plants (Solanum tuberosum L) var. Granola L (G2) Muhammad Thoriqus Tsany Email : thoriqmuhammad381@gmail.com Potato (Solanum tuberosum L) is one of the horticultural commodities that has carbohydrate content that has the potential for food diversification. This study …