This thesis work was to determine the combination hybrid-density, thus able to obtain optimal performance in the maize crop. This work was performed between July 2008 and in November the same year, the sector Winge, District Picota Picota Province and Department of San Martín. The hybrids used were three triples and three simple, so to prove which of these is better suited to a certain density, and also try other vegetative characteristics of the crop. To achieve the following experiment used a block design with a completely randomized factorial 3 X 6, with 18 treatments and 3 replications per treatment, where the results were analyzed by analysis of variance, Duncan test and the coefficient reliability. Planting is done in a slightly moist soil, using a distance of 0.80 between rows and 0.167m, 0.20m, 0.25m between plants, leaving one plant per desahíje after the coup, thus determinin...