Abstract

MORALES HERNANDEZ, José Luis; HERNANDEZ MARTINEZ, Juvencio  and  REBOLLAR REBOLLAR, Samuel. Potato yield with mineral fertilizer on Andosol soils in the State of Mexico. Rev. Mex. Cienc. Agríc [online]. 2013, vol.4, n.6, pp.881-893. ISSN 2007-0934.

The experiment was conducted in an Andosol soil in the community of Peñuela, municipality of Zinacantepec, State of Mexico in 2009, with the objectives: a) evaluate the yield of potato tubers (Solanum tuberosum L.) cultivar Fianna, in response of nitrogen, phosphorus and potassium levels, with commercial fertilizer and b) estimate optimum economic levels for limited and unlimited capital. Nutrient levels subjected for evaluation were: 150, 200, 250, 300, 350 kg ha^-1 of N, 00, 200, 250, 300, 350, 400, 450 kg ha^-1 of P₂O₅, and 00, 70, 140, 210 kg ha^-1 of K₂O. 18 treatments were designed, which were evaluated in an experimental design of randomized blocks, with four replications; responses to N, P₂O₅ and K₂O were verified with the Turrent graphical method. The results indicate better yield capability in treatments four (34.3 t ha^-1, 300-350-70 kg ha^-1 N, P₂O₅, K₂O) and seven (33.7 t ha^-1: 150-250-70 kg ha^-1 N, P₂O₅, K₂O), both statistically different from the other treatments (α< 0.05), with a variation coefficient of 25.9%. The optimum economic of unlimited capital was located in treatment four (300-350-70 kg ha^-1 of N, P₂O₅ and K₂O), with a higher net income. The optimum economic for limited capital, was located in treatment seven. It is conclude that there is a yield response associated with optimal doses by the use of ammonium diphosphate, phosphonitrate and potassium chloride in the study region.

Keywords : Andosol; optimum economic; unlimited capital; fertilization with N, P, and K.

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