Abstract

TABARES PATINO, Edison David; JARAMILLO VILLEGAS, Sonia; GONZALEZ SANTAMARIA, Luis Hernán  and  COTES TORRES, José Miguel. EFFECT OF FERTILIZATION IN POTATO (Solanum tuberosum L.) DIACOL CAPIRO VARIETY UNDER ANDISOL FROM EAST ANTIOQUIA, COLOMBIA. Rev. Fac. Nac. Agron. Medellín [online]. 2009, vol.62, n.2, pp.5099-5110. ISSN 0304-2847.

This research was carried out for evaluate the response to fertilization in andic soils of the potato variety DIACOL Capiro. Different levels of Ca (0, 3, 5 y 9 cmolc kg-1), Mg (0, 0.7, 1.4 and 3 cmolc kg-1), B (0, 0,5, 1,0 and 2,0 mg kg-1) and S (0, 10, 20 y 40 mg kg-1) with three levels of NPK, (grade 1:2:2) in 500, 1.500 and 3.000 kg ha-1 dose where evaluated. A modified central composite design was used and 80 experimental plots of 1 m2 were established. In order to determinate the concentrations of these elements in the soil solution, there were made incubations with different dose of these elements and the application efficiency were P: 0.17, K: 0.83, Ca: 0.79, Mg: 0.90, S: 0.53 and B: 0.10. The yield was partitioned in four categories by size tuber. The levels of NPK showed a positive response for total yield with averages 7.54, 9.34 and 11.39 kg m-2 for 500, 1.500 and 3.000 kg ha-1 of NPK, respectively.. Differences among the tuber size categories, more of 6 cm, 2-4 cm and less of 2 cm , were significant, but in the 4-6 cm category it did not have significant differences. The Ca and Mg applications showed unpredictable effects over the production in the different fertilization levels evaluated. The use of B and S did show significant differences in the production for the studied soil.

Keywords : Chemical fertilization; incubation of soil; yield.

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