The present investigation entitled "Effect of the application of four doses of N, P, K and Mg in the cultivation of oil palm (Elaeis guineensis Jacq) conducted in the nursery of the company Palms Shanusi SA", executed in the company in question, whose objectives were to: 1) evaluate the effect of the application of four doses of N, P, K and Mg in the vegetative development of seedlings of oil palm (Elaeis guineensis Jacq) under nursery conditions between the months of June 2008 to April 2009, the company developed in Palmas del Shanusi SA 2) Reduce production costs demanded by the manual application of fertilizers in the cultivation of oil palm (Elaeis guineensis Jacq) under nursery conditions. 3) Conduct economic analysis of the production of seedlings of oil palm (Elaeis guineensis Jacq) under nursery conditions. The experimental design was a randomized complete block (RCBD) with four ...