Abstract

LOPEZ-ORDAZ, Anselmo; BACA-CASTILLO, Gustavo Adolfo  and  FERNANDEZ-PAVIA, Yolanda Leticia. Nutrient solutions to induce changes in concetration of N, P, K in mango plants. Rev. Mex. Cienc. Agríc [online]. 2011, vol.2, n.6, pp.867-883. ISSN 2007-0934.

In order to compare two groups of nutrient solutions, these were studied by the Steiner nutrient solution or Hoagland-Hewitt changes in the concentrations of N, P and K in plants of mango (Mangifera indica L.) cv. Haden, of six months, induced by applying at a group of Steiner solutions and another group Hoagland-Hewitt low levels (deficiency), sufficient and high (toxicity) of N, P and K. The experiment was conducted in a greenhouse located in Lomas de San Esteban, Texcoco, Mexico, the plants were purchased and laid in a period of adjustment from March 15^th to July 23^th and, the treatments were applied from July 24^th to November 23^th, 2008. The plants were grown in a hydroponic system by sub-irrigation, as substrate, porous volcanic rock (tezontle) was used. We used a full factorial design of treatments 3*3*2 with four replicates. With the solutions of the Steiner group, regardless of their level of N, P or K in the nutrient solution, similar concentrations of N, P or K were obtained in the leaves and young stems, specifically in the interaction contrasts obtained from the N*P*K compound. By contrasting, through the interaction just indicated, the effect of Hewitt solution for toxicity, with the Hoagland solution for deficiency, there was a significant difference between the concentrations of N and P in the leaves and young stems. This effect was not gotten in the K concentration in the young stem.

Keywords : Mangifera indica L.; ionic ratios; nutrient solutions; osmotic potential.

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