English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/4194
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 21 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título : From on-farm solid-set sprinkler irrigation design to collective irrigation network design in windy areas
Autor : Zapata Ruiz, Nery ; Playán Jubillar, Enrique ; Martínez-Cob, Antonio ; Sánchez Marcos, Ignacio; Faci González, José María ; Lecina Brau, Sergio
Palabras clave : Sprinkler irrigation performance
Collective irrigation network design
Sprinkler irrigation simulation models
Solid-set sprinkler irrigation
Wind effects on sprinkler irrigation systems
Fecha de publicación : 24-ene-2007
Editor: Elsevier
Citación : Agricultural Water Management 87 (2): 187-199 (2007)
Resumen: In this paper, a contribution to the design of collective pressurized irrigation networks in solid-set sprinkler irrigated windy areas is presented. The methodology is based on guaranteeing minimum on-farm performance, using a historical hourly wind speed database and a ballistic solid-set irrigation simulation model. The proposed method was applied to the Montesnegros Irrigation District (central Ebro basin, Spain). The district irrigates an area of 3,493 ha using an on-demand schedule. The average wind speed in the area is 2,8 m s-1. An analysis of district water records showed that farmers often reduce water demand when the wind speed is high, but their irrigation decision making is limited by the capacity of the irrigation network and by the unpredictable character of local winds. Simulations were performed for eleven irrigation seasons, two triangular sprinkler spacings (18x18 and 18x15 m), and two sprinkler models. The percentage of monthly suitable time for irrigation was determined for four management strategies. The first one was based on a wind speed threshold (3 m s-1), while the other three were based on three levels (standard, relaxed and restrictive) of two irrigation performance parameters: the Christiansen Uniformity Coefficient (CU) and the Wind Drift and Evaporation Losses (WDEL). The thresholds for the standard strategy were CU ≥ 84% and WDEL ≤ 20%. The suitable time for the first strategy (56%) was always lower than for the standard and the relaxed strategies (with respective average values of 75 and 86%), and higher than for the restrictive strategy (30%). In order to design the collective network, the hydrant operating time was equalled to the suitable time for irrigation. The differences in the cost of the collective network plus the on-farm equipment were particularly relevant between the restrictive strategy and the other three. Differences in suitable operating time were clear between sprinkler spacings, and less evident between sprinkler models. The application of the proposed methodology may be limited by the availability of historical wind speed records and CU estimates for different combinations of sprinkler models, sprinkler spacings and wind speed.
Descripción : The definitive version is available at: http://www.sciencedirect.com/science/journal/03783774
Versión del editor: http://dx.doi.org/10.1016/j.agwat.2006.06.018
URI : http://hdl.handle.net/10261/4194
DOI: 10.1016/j.agwat.2006.06.018
ISSN: 0378-3774
Aparece en las colecciones: (EEAD) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
AGW2007_87_2_187_199Borrador.pdf340,78 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.