The aim of this study was to evaluate the effect of three densities [40cmx60cm, 30cmx50cm and 20cmx60cm] on the agronomic behavior of three varieties of purple maize (Zea mayz L.) INIA-601, UNC-47 and PMV-581. Thus, soil sampling was carried out. The cultural work began with the preparation of the land, planting, handle of the crop and harvest. The project was located in the Quipachacha annex, Levanto district in the region of Amazonas at 2820 msnm, UNTRM Experimental Station, INDES - CES. The area of ​​land was 844.8m2 with dimensions of 13.20m wide by 64m long. The statistical design was factorial of 3 blocks (repetitions) and 09 demonstration plots (treatments), with separation of 1.0m between plots and 1.5m between blocks, furthermore, 1 control 60cmx40cm. The analysis of variance of the factors and study variables and their respective Tukey test in SPSS (Version 23.0) were used ...