SciELO - Scientific Electronic Library Online

 
vol.20 número1Respuesta a la selección participativa en variedades de calabaza de la Sierra Norte de Puebla, MéxicoExtracción nutrimental de jitomate (Solanum lycopersicum L.) en mezclas de tezontle con aserrín nuevo y reciclado índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Revista Chapingo. Serie horticultura

versión On-line ISSN 2007-4034versión impresa ISSN 1027-152X

Resumen

RIVERA-ESPEJEL, Esteban Arturo et al. Tomato fertilization using ammonium and nitrate in split roots in hydroponics. Rev. Chapingo Ser.Hortic [online]. 2014, vol.20, n.1, pp.57-70. ISSN 2007-4034.  http://dx.doi.org/10.5154/r.rchsh.2012.12.069.

The effects of ammonium and nitrate on hydroponic tomato crop have been studied since hydroponics is used as a means of commercial production. In general, it has been found that small proportions of ammonium improve plant growth and yield. However, these studies were carried out with all the roots exposed to these combinations. We tested the hypothesis that separating the half of the roots and exposing this portion to high concentration of ammonium helps to increase growth, yield and fruit quality, without ammonium toxicity symptoms. For this reason, an experiment was conducted which treatments were: 1) 12 meq·liter-1 of NO3-:water; 2) 9 meq·liter-1 of NO3-:3 meq·liter-1 of NH4+; 3) 6 meq·liter-1 of NO3-:6 meq·liter-1 of NH4+; and 4) water:6 meq·liter-1 of NH4+. We used a completely randomly design with five replications. The experimental unit consisted of a tomato plant with split roots in quantities of 50 %. Each part grew up in a container divided into two parts of the same volume, which was filled with red volcano gravel called "tezontle". Plant height, diameter, root volume and length, fruit yield per plant, fruit quality (polar and equatorial diameter, total soluble solids and titratable acidity) and shelf life were quantified. The results indicated that NO3-:NH4+ ratios had a significant effect (P ≤ 0.05) on all variables, except for root length and tritable acidity.

Palabras llave : Solanum lycopersicum L.; forms of nitrogen; split roots; tezontle.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons