Quality of subfoliar sprinkler irrigation in Theobroma Cacao L. in San Vicente farm, Los Ríos, Ecuador
Resumen
Se realizó la evaluación del manejo de un sistema de riego por aspersión subfoliar en el cultivo de cacao, en donde el objetivo fue valorar su comportamiento hidráulico. Se estudiaron tres presiones de trabajo de los aspersores en cinco módulos del sistema. Los parámetros evaluados fueron: presiones al inicio y final de los laterales de riego, caudales en esos mismos sitios, coeficiente de uniformidad de Christiansen, uniformidad de distribución y área regada adecuadamente. Los resultados indican que existe una variación de presión y caudal por encima de lo teórico (20% y 10%). Se evidenció que altos coeficientes de uniformidad no representan la mayor área regada adecuadamente. Las presiones de trabajo estudiadas en los aspersores aseguran altos coeficientes de uniformidad del riego, no obstante, si lo que se desea es alcanzar la mayor área adecuadamente regada se debe operar a 275,79 kPa.
Palabras claves: caudal; uniformidad; presión de trabajo.
Abstract
The evaluation of the management of a subfoliar sprinkler irrigation system in the cocoa crop was carried out, where the objective was to evaluate its hydraulic behavior. Three working pressures of the sprinklers were studied in five modules of the system. The parameters evaluated were: pressures at the beginning and end of the irrigation sides flow at those same sites, Christiansen Uniformity Coefficient, Distribution Uniformity and Adequately Irrigated Area. The results indicate that there is a variation of pressure and flow above the theoretical, that is, of 20% and 10%. It was evidenced that high uniformity coefficients do not represent the largest area irrigated adequately. The work pressures studied in the sprinklers ensure high coefficients of uniformity of irrigation, however, if what is desired is to reach the largest area adequately irrigated, it should be operated at 275.79 kPa.
Keywords: flow; uniformity; pressure head.
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