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Revista Chapingo. Serie horticultura
versión On-line ISSN 2007-4034versión impresa ISSN 1027-152X
Resumen
OJEDA-REAL, L. A. et al. Nitric nutrition, and irrigation systems effects on strawberry (Fragaria x ananassa Duch.) flavor. Rev. Chapingo Ser.Hortic [online]. 2008, vol.14, n.1, pp.61-70. ISSN 2007-4034.
The strawberry fruit flavor depends on its sugar, amino acid, and organic acid content. Up to now, the effect of nitric nutrition and irrigation systems on these compounds is not well characterized. The objective of this work was to identify and to quantify the carbohydrates, amino acids, and organic acids content in strawberries cultivated at different levels of nitric fertilization, under two irrigation systems. Nitrogen was applied as Ca(NO3)2 at concentrations of 0, 3, 9 and 20 mM in the irrigation water and drip and furrow irrigation systems were used. The carbohydrate and the amino acid content increased at 3 mM in drip system and 9 mM in the furrow system, compared with the unfertilized treatment, but did not increase further at 20 mM nitrogen. The organic acids content decreased as the nitrogen fertilization increased. Therefore, an excessive use of fertilizer and irrigation water does not enhance the content of the compounds related with the sensorial quality of the strawberry.
Palabras llave : carbohydrates; amino acids; organic acids; gas chromatography.