Evaluación del efecto de la fertilización en el rendimiento de cuatro clones promisorios de papa criolla (solanum phureja juz et buck l.) en el municipio de Pamplona – Norte de Santander.

Abstract

The work of research modality was carried out in the path of Chichira, in the Santa Isabel estate of the municipality of Pamplona, at a height of 2,353 msnm. The most important objective of this study was to determine the effect of four fertilization doses (farmer dose (T1), soil analysis (T2), soil analysis + 50% (T3) and soil analysis -25% (T4) In the area, using four promising clones of criolla potato, using clones 2, 5 and 9 as the best materials that have had a greater adaptability, efficiency and as a control clone 1, variety Colombia Creole. In the same way it was taken in the area four agronomic variables, plant height, leaf area, stem gauge and number of stems to establish the influence that show crop yield. The results show that the materials used exceeded the national and departmental averages in ton / ha, which did not present significant differences, which means that they behaved and obtained a very similar yield in kg / ha, where clone 5 was very Similar to the others in yield presented a higher performance of (33,392 kg / ha), followed by clone 1 with (30,004 kg / ha), clone 9 with (27,871 kg / ha) and finally clone 2 with /he has). Among the doses used, the Tukey test shows that there are significant differences between the fertilization methods, showing that the yields of treatments T3, T1 and T2 presented a very similar production in kg / ha, unlike T4 being totally different to the other treatments but with a trend very similar to T2. The cost analysis shows that T1 was the most expensive of the four treatments with a value of $ 10,103,910 pesos with a return of 284.75%, unlike T3 being the best with a profitability of 563.32% and with a value of Production per hectare of $ 7,415,910, reducing costs by 30% The variables that correlated better with yield were: leaf area (72%), stems gauge (52%), and stems (68%). These correlations were positive; this means that as the independent variable grows the dependent variable grows. The correlation between the yield and the height of the plant was (36%), presenting very little influence with the dependent variable. Showing that these variables affect in the production of criolla potato in 71.43%.