Abstract

SALAZAR-JARA, Fredi I. et al. Extraction of macronutrients in chile (Capsicum annuum L.) Hungarian type. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.8, pp.2055-2061. ISSN 2007-0934.

The Hungarian pepper type is prized for its yellow fruits and represents a horticultural crop of economic importance because it generally keeps high and stable prices throughout the year. There is little information regarding mineral nutrition management of this crop that favor the ultimate yield expression and rational use of fertilizers. The objective of this research was to quantify the extraction of macronutrients in growing Hungarian pepper type. Plants were grown in 14 L pots with tezontle as substrate, which were watered three times a day with Steiner solution at 75% equivalent to -0054 MPa osmotic potential. The concentration of leaf macronutrient, aerial dry biomass and nutrient extraction was quantified; furthermore, nutrient absorption and nutrient extraction index were estimated. It was concluded that the indices values of nutrient extraction can be used to determine nutrient requirements of Hungarian pepper according to a yield goal as follows (in kg t-1 product harvested): 3.1 N, 0.4 P, 4.2 K, 1.0 Ca and 0.2 Mg. Foliar nutrient concentrations in recently mature leaves of Hungarian pepper with osmotic potential of -0054 MPa in the nutrient solution provide reliable reference values for nutritional diagnostic purposes.

Keywords : crop nutrition; hydroponics; nutritional requirement; yield.

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