The effect of this plant study was determined by the application of different nutrient solutions and increasing doses of dry mass and pots potential on aerial production of corn plants grown in a sample content of a Red-Yellow Latosol in pots under greenhouse conditions. The treatments consist of three nutrient solutions, the treatments of additional doses (K) and a solution that received neither nutrient nor K application. The root quadratic model is the most suitable among the results to describe a dry mass production of corn plants as a function of the K dose.