Evaluación del efecto de la fertilización en el rendimiento de cuatro clones promisorios de papa criolla (solanum phureja, juz. et. buk) en el municipio de Mutiscua, Norte de Santander.

Abstract

This research was carried out to evaluate the effect of fertilization on four promising clones of potato criolla in the municipality of Mutiscua, the farm where the study was carried out is located at 2750 m.a.s.l and an average temperature of 14 ° C, the materials are Selected for the superior performance in previous tests performed in the area, these were clone 2, 5, 9 and as a control the Colombia variety (Clone 1). In order to determine the fertilization dose, soil analysis was taken into account, based on the results, four doses were used: the first dose recommended by the farmer; the second dose: 50% more than soil analysis; The third dose: from soil analysis and the fourth dose: 25% less than soil analysis; The fertilizer application was applied at the time of sowing and weeding. Key morphological variables such as plant height, number of stems, thickness and leaf area were evaluated when the crop was in full bloom. In terms of yield, the number and weight of the tubers were classified into four categories zero, first, second and riche. It was found that there was no significant difference between the clones evaluated, behaving very similar in performance, however the clones that showed the highest performance were clone 5 with (21.76 ton / ha) and 9 with 21.59 ton / he has. To determine the best fertilizer dose, a cost benefit analysis was performed that identified dose 4 as the best performing with 207.87%.