Evaluación del potencial productivo de seis variedades de papas nativas (Solanum tuberosum L) precoces con fertilización química y orgánica + química, comunidad de Sigsihuayco - provincia de Cañar.

La prueba de Tukey al 5% realizada para el factor B (Variedades) ubicó a la variedad Carrizo (V2) con mayor rendimiento 42,86 ha y con menores valores Chaucha Amarilla de flor rosada (V5) y a Chaucha Amarilla flor blanca (V3) con medias de 25,96 y 22,51 ha. En cuanto a la relación beneficio/costo (12 tratamientos), la fertilización química con la variedad Carrizo, T2 (F1V2), resultó tener una mejor relación beneficio/costo 2,13 UDS/ha seguido del tratamiento T8. (F2V2) fertilización química más orgánica. Como conclusión la variedad con mejor potencial productivo resultó la papa Carrizo con fertilización química. Se recomienda cultivar la variedad Carrizo la cual presenta un mayor porcentaje de categoría gruesa (80,7%), mayor rendimiento 42,86 Uha, y junto con la fertilización química que presentan una mayor relación beneficio/costo.

The objective of this research was to evaluate the productive potential of six native potato (Solanum tuberosum L.) early varieties with chemical and organic plus chemical fertilization. For this purpose, the Austro Experimental Station (INIAP) provided five early native varieties and one local variety. It was used a Randomized Complete Block Design with a split plot, three replications, two types of fertilization (Factor A), six varieties (Factor B), twelve treatments (AB), and a total of thirty-six experimental units (EU) to establish the test. At planting time for chemical fertilization (F1), 18-46-00 (DAP) was used at a dose equivalent to 650 kg/ha, plus 00-00-60 (KCl) 120 kg/ha; while for organic plus chemical fertilization (F2), DAP and KCl were used at doses of 325 and 60 kg/ha respectively plus Eco Abonaza equivalent to 5 t/ha. From the results obtained for yield (t/ha) for factor A and interaction (AB), there were no statistical differences, while factor B showed significant differences. The 5% Tukey test conducted for factor B placed the Carrizo variety with the highest yield 42.86 t/ha and in last place, the Chaucha Amarilla white flower with 22.51 t/ha. In terms of benefit/cost ratio, chemical fertilization with the Carrizo variety was 2.13 UDS/ha consisting of treatment T8, chemical plus organic fertilization. It was concluded that the variety with the best productive potential was the Carrizo potato with a yield of 42.86 t/ha and, together with chemical fertilization, had the best benefit/cost ratio. It is recommended to cultivate the Carrizo variety with chemical fertilization.