Resumo

TABARES PATINO, Edison David; JARAMILLO VILLEGAS, Sonia; GONZALEZ SANTAMARIA, Luis Hernán  e  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.

Palavras-chave : Chemical fertilization; incubation of soil; yield.

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