The application of different doses of silicon fertilization (Quick sol) was evaluated in the King Grass (Pennisetum purpureum) culture. A random complete block design was used with 5 treatments and 4 repetitions. The variables evaluated were: plant height, plant diameter, number of plants per metre, biomass, and dry matter, the application of Quick sun silicon source was carried out in four levels: T1: 0.75 L of Quick sol/ha, T2: 1.0 L of Quick sol/ha, T3: 1.25 L of Quick sol/ha, T4: 1.5 L of Quick sol/ha and T5: control. T4 with high doses of silicon showed higher performance in plant height variables (2.71m), number of plants per meter (28.89 p/m), and biomass (76.70 ton/ha), the highest percentage of humidity was recorded in the control treatment (83.15%). The trend in all response variables was kept downwards to greater application of Silicon increased production of dry matter and better behavior of dependent variables.