The present investigation work with the objective of evaluating the adaptation of hybrid Tropical of yellow Corn hard of high quality proteica and to determine the relationship beneficio/costo of the hybrid ones introduced in the valley of the First soil May, County of San Martin, geographically characterized to present the coordinates of longitude West with 76º5 '; 6º35 'of South latitude and 356 meters on the level of the sea; the yield was evaluated and characteristic vegetative, using the one designad statistical block completely randomizado (DBCR) with 03 repetitions and 14 treatments, the results were analyzed by means of the variance analysis and the test of multiple significance of Duncan. The results obtained according to the statistical analysis, you concludes that there were significant differences among the treatments in the grain yield to 14% of humidity whose yields fluct...