This paper titled "Evaluation of the effect of minimum tillage and conventional three densities in the production of cowpea (Vigna unguiculata (L.) Walp), White Variety in the Lower Mayo". This thesis work was carried out in the area of Miraflores Fundo belonging to the National University of San Martin - Tarapoto, which is located in the sector Ahuashiyacu, District Band Shilcayo, Province of San Martin, Peru. The effect on the agronomic and crop yield of Cowpea white densities in three systems under conditions of minimum tillage and conventional tillage. And economic analysis of profitability. This study was conducted from January 8, 2012 to April 7, 2012. We used the Randomized Complete Block Design (DBCR) factorial arrangement, 2 x 3 and 03 repetitions. In the meteorological data presents us with an average monthly average temperature of 25.8º C, with an average monthly total precip...