The effect of smaller elements application over the yield of the Soy beans in an alkaline soil from Central Huallaga with automated seeder using different doses F305G fertilizer applied to the soil in of 20, 40, 60, 80 Kg/Ha concentrations comparing with a witness without any micronutrients application was evaluated in this thesis work, with the purpose of determining the economically more efficient dose to be recommended for producing Soy the farmers of the study area, in this way, to enlarge our region agricultural frontier. It was realized in Caspizapa district, Pioota County, Region San Martin, Regíon, distant to 73 Km from Tarapoto City, Arch. Femando Belaunde Terry Highway south, right side, Senorarca Sector, with soy IAC - 8 variety under tropical dry forest (td - F) conditions obtained production cost and benefit/cost relationship of different treatments, using the random totall...