This paper is entitled "planting densities in crop yield of black snuff (Nicotiana tabacum), variety Habano gold hair juan war"; likewise in order to determine the best planting density cultivation of black snuff (Nicotiana tabacum) habano variety golden hair and determine the benefit - cost of the treatments under study; this work on the grounds that drives the company and hurm naterrnan Peru, located in the Yacucatina industry, Juan Guerra District, San Martin Province was made .; with an annual T ° maximum 32 ° C. average annual rainfall of 1 200 mm and a relative humidity of 70-80%. The design was complete random (DBCA) blocks, with 5 treatments with four replications. The treatments were t1 (0.90 mx 0.35 m}, t2 (0.90 mx 0.40 m), t3 (0.90 x 0.45m), t4 (1.00 mx 0.40 m), t5 (1.00 mx 0.35 m). the results showed that the highest yields of dry leaf per hectare were obtained in treatment...