The research work was carried out in the vegetative propagation greenhouse of the Peruvian Amazon Research Institute, located in the department and province of San Martín, Banda de Shilcayo district, Bello Horizonte - Pucayacu, which we provide a scope on the "study of nutritional deficiencies in mahogany (Swietenia macrophylla king) developed at greenhouse level in the district of the Banda de Shilcayo - San Martín", We used a Completely Random Design (DCA). Evaluating 12 treatments and one control, with four repetitions in square with the technique of missing elements. The treatments are T0 Present macro and micro nutrients (Control), T1 Nitrogen (N), T2 Phosphorus (P), T3 Potassium (K), T4 Calcium (Ca), T5 Magnesium (Mg), T6 Sulfur (S), T7 Iron (Fe), T8 Manganese (Mn), T9 Boron (B), T10 Zinc (Zn), T11 Copper (Cu) and T12 Molybdenum (Mo). Mahogany botanical seeds were used, later the...