Resultados de la evaluación agronómica de formulaciones con valor fertilizante en el cultivo de lechuga.

The use of national raw materials to enrich the new formulations of fertilizers contributes to diminish the employment of expensive chemical products. The Engineering and Chemical Research Center (CIIQ) has assumed the task of developing fertilizers using minerals, microorganisms, raw matters of national origin. The objective of this work is to show the results of the agronomicevaluation of eleven treatments, including the nine formulations given by the CIIQ, a witness without fertilizer application and a witness with a NPK formula. The work was carried out in an experimental organoponic located in the municipality Arroyo Naranjo. Each formulation was applied in little plots of 2.0 x 0.90 m, in which lettuce (variety Black seeded Simpson) was planted. The behavior was evaluated from the sowing until the crop, being determined indicators of growth (height of the plant, number of leaves, and diameter of the shaft) and the yield. In the studied indicators was observed that there are not significant differences in the treatments (1 at the 9) with relationship to the NPK (10) treatment. In the treatments 1, 4, 6, 7, 8 and 9 are an increment of the yield with relationship to the NPK treatment, more remarkable in the 1 and the 6. [ABSTRACT FROM AUTHOR]