Cereal Research Communications

, Volume 45, Issue 4, pp 711–721 | Cite as

Water Use and Productivity of Maize-based Cropping Systems in the Alqueva Region (Portugal)

  • A. TomazEmail author
  • M. Patanita
  • I. Guerreiro
  • L. Boteta
  • J. F. Palma


In intensive irrigated farming systems, the way to improve productive efficiency depends on the proper management of resources. With the implementation of the Alqueva global irrigation system in the southern Portugal region of Alentejo, agricultural intensification is a reality that imposes to farmers the challenge of producing more and more efficiently, ensuring the farming systems sustainability. This work resulted from an on-farm demonstration project carried out in two locations in the Alqueva region. Water use and water productivity were studied during 2012/2013 and 2013/2014, in three double cropping systems: a maize monoculture (MM) and two rotations, barley + maize-barley (BM-B) and sunflower-barley + maize (S-BM). Maize yields were influenced by the length of the crop cycle. In the rotation BM-B, with a predominance of autumn-winter crops, water requirements were lower and the total volume of irrigation applied was approximately half of the monoculture (5930 m3/ha and 13,230 m3/ha, respectively). When the potential crop yield was reached, maize had the higher water productivity (the highest value achieved was of 2.7 kg/m3). Overall, as a result of the lower yields achieved, the water productivity values indicate a less balanced performance of the S-BM rotation.


Alqueva monoculture crop rotation water extraction water productivity 


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This work was supported by PRODER (Rural development program), through the Project ROTALQ (Integrated solutions for crop rotations with technical and economic viability in the area of influence of Alqueva).

This work is a contribution to the Project UID/GEO/04035/2013, funded by FCT - Fundação para a Ciência e a Tecnologia, Portugal.

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Water Use and Productivity of Maize-based Cropping Systems in the Alqueva Region (Portugal)


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© Akadémiai Kiadó, Budapest 2017

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • A. Tomaz
    • 1
    • 2
    Email author
  • M. Patanita
    • 1
    • 2
  • I. Guerreiro
    • 1
  • L. Boteta
    • 3
  • J. F. Palma
    • 1
  1. 1.Departamento de BiociênciasEscola Superior Agrária - Instituto Politécnico de BejaBejaPortugal
  2. 2.GeoBioTecUniversidade Nova de LisboaCaparicaPortugal
  3. 3.Centro Operativo e de Tecnologia de RegadioQuinta da SaúdeBejaPortugal

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