Determinación de los requerimientos hídricos para el cultivo de la cebolla colorada (Allium cepa l.) Var. Burguesa en base al contenido de agua en el suelo, en Macají, cantón Riobamba, provincia de Chimborazo.

Abstract

The present research proposen: to determine the water requirements for the cultivation of bourgeois red onion (Allium cepa) based on water content in the ground, in Macaji, Riobamba canton, Chimborazo province; Through the aplication Of lysirneters drainage. The experiment was performed in a randomized complete block design (DBCA) and adapte to drip irrigation conditions. Three treatments and three replications of irrigation were included, according to the abatement of the available soll moistore (Tl 25, T2 50 and T3 75%). The results shoqrd that the different irrigation plates affected significantly the yield of the red onion. The highest yield Of 49,39 Uha was obtained from the T2 treatment. The variables evaluated were: plant height, number Of leaves, diameter Of pseudotallo, relative water content, chlorophyll content, harvest days, bulb weight. equatorial diameter, total yield, percentage of matter Dryness and correlation between the water used and yield (water footprint). Four phenological stages were established for the cultivation from transplant to harvest: formation Of new leaves, vegetative development, bulbification and maturation. The ke was determined and adjusted for each of the phenological tages. The kc values with the best yields (T2) 49„39 t/ha were: 0.6; 0,9; I y for the initial, development, médium and final stages, in which an irrigation sheet of 550,7 mm was applied throughout its cropp cycle. Keywords: HYDROLOGY - DRAIN LISIMETER REFERENCE EVAPOTRANSPIRATION - CROP COEFF 9Y*LATES -