This thesis was conducted at the Oasis-Morales, Cumbaza right bank of the river in the Lower Mayo, province and department of San Martin (Peru) sector. Geographically characterized by having the following coordinates: Latitude South with 6, January 18 and 73 ° 33 11 W and 323 meters above sea level. In order to compare the performance of eight genotypes of snuff Black (Nicotiana tabacum) under irrigation, varieties and hybrids used were: Brazil thin Mata, Gualaceo Ecuador, Habano Nicaragua, Pennland, Maryland, Tarapoto (Witness) and hybrids HNX (l4Bx513) xhj, ms. 215 x blc8,3x, .For the implementation of statistical design work complentamente Block used the Randonizado {B. E. R.) with eight treatments and three repetitions; The results were analyzed by analysis of variance and multiple test of Duncan. Based on production costs and economic analysis of profitability determin6 the T6, (va...