The objective of the study was to evaluate the severity of anthracnose (Colletotrichum lindemuthianum) in common bean (Phaseolus vulgaris L.) of the "cuarentón" variety under different silicon doses. The research was conducted over two years at the Experimental Farm "La María" of the Technical State University of Quevedo-Ecuador. The "cuarentón" bean variety from the area was used, and a complete randomized block design was applied with seven treatments and three replications. The silicon source used as a fertilizer was silicon dioxide (SiO2/silicon at 32%), which was applied in two fractions at the base of the plant. One was applied 15 days after sowing and the second 45 days after sowing. Anthracnose severity was evaluated using visual scales and the Leaf Doctor image processor. The correlation analysis to validate the program showed a correlation of 0.75-0.97 (in leaves and pods) compared to the visual evaluation, indicating its validity for evaluating this disease. The separation of means (Tukey p < 0.05) indicates that anthracnose evaluation can be performed on any leaf at a different height of the plant, as no statistical differences were found. However, no treatment showed less severity compared to the control. The only agronomic variables of interest where silicon-fertilized plants demonstrated significant differences was the plant height. The benefit/cost economic analysis of each treatment does not recommend the use of the product due to the elevated cost of the input during the trial and the low selling price of the product