TECHNICAL PAPERS
Feb 1, 2009

Allocation of Flow to Plots in Pressurized Irrigation Distribution Networks: Analysis of the Clément and Galand Method and a New Proposal

Publication: Journal of Irrigation and Drainage Engineering
Volume 135, Issue 1

Abstract

This article reviews the method for allocating flow to irrigation plots proposed by Clément and Galand in (1979). Mention is made of its shortcomings, such as the lack of consideration given to the specific technical and economic factors governing current pressurized (drip or sprinkler) irrigation systems and how they provide water to plots. We propose a method for fixed irrigation systems, which takes into account the irrigation method on the plot and the existence of an optimum block area. The result is to allocate a constant flow of water to plots up to an established value of maximum surface area. From there on, we propose applying linear increases related to the total plot area. We also present a formula for calculating the maximum number of blocks based on variables that are easily obtainable during the project phase.

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Acknowledgments

To all students, whose questions allowed the writer to develop this proposal.

References

Allen, R. G., Pereira, L. S., Raes, D., and Smith, M. (1998). “Crop evapotranspiration: Guidelines for computing crop water requirements.” Irrigation and Drainage Paper No. 56, FAO.
Bonnal, C. (1963). Manuel d’irrigation collective par aspersion, OCDE, París (Trans. Spanish: Manual de riego colectivo por aspersión, OCDE, 1983).
Clarke, D., Smith, M., and El.Askari, K. (1998). “CROPWAT for Windows. A computer program for irrigation planning and management.” Irrigation and Drainage Paper No. 46, FAO.
Clément, R. (1966). “Calcul des debits dans les reseaux d’irrigation fonctionant a la demande.” Houille Blanche, 5, 553–575.
Clément, R., and Galand, A. (1979). Irrigation par aspersion et reseaux collectifs de distribution sous pression, Eyrolles Editeur, Paris.
FAO. (2001). “Deficit irrigation practices.” Water Rep. No. 22.
Monserrat, J., Poch, R., Colomer, M. A., and Mora, F. (2004). “Analysis of Clément’s first formula for irrigation distribution networks.” J. Irrig. Drain. Eng., 130(2), 99–105.
Ortiz, J. N., Montero, J., Simón, R., and Tarjuelo, J. M. (2006). “Set sprinkler irrigation and its cost.” J. Irrig. Drain. Eng., 132(5), 445–452.

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Published In

Go to Journal of Irrigation and Drainage Engineering
Journal of Irrigation and Drainage Engineering
Volume 135Issue 1February 2009
Pages: 1 - 6

History

Received: Nov 30, 2007
Accepted: Apr 25, 2008
Published online: Feb 1, 2009
Published in print: Feb 2009

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Authors

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J. Monserrat [email protected]
Professor, E.T.S. Enginyeria Agraria, Univ. of Lleida, Rovira Roure, 191, 25198 Lleida, Spain. E-mail: [email protected]

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