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Effect of the optimized regulated deficit irrigation methodology on quality, profitability and sustainability of barley in water scarce areas

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  • Pardo, J.J.
  • Domínguez, A.
  • Léllis, B.C.
  • Montoya, F.
  • Tarjuelo, J.M.
  • Martínez-Romero, A.

Abstract

A three-year experiment (2015–2017) was conducted under the semiarid conditions of the Hydrogeological Unit Eastern Mancha (HUEM) (Spain), using the optimized regulated deficit irrigation for a limited amount of irrigation water (ORDIL) methodology on barley. Five irrigation treatments were performed during the experiment: no deficit (ND), 100% (T100), 90% (T90), 80% (T80), and 70% (T70) of barley net typical irrigation requirements (2500 m3 ha-1) in the area. The aim was to determine the effect of ORDIL: 1) on the quality of grain and malt; 2) on the profitability and use of water at farm scale; and 3) on the profitability and sustainability of the HUEM. Despite using less water, ORDIL treatments showed no significant differences in grain quality with respect to ND, while T80 achieved the highest economic water productivity (average 0.17 € m-3). Thus, by using T80 instead of ND and increasing the irrigated area of barley on the farm by 14%, it is possible to save up to 31% of water with the same profitability. This amount of water could be used for more profitable crops, increasing the profitability of the farm. The use of ORDIL at basin scale, using T80 instead of ND and increasing the cultivated area by 9%, could have saved up to 55.9 hm3 over the 3 experimental years (16% of annual extractions in the HUEM). Supplying this water to more profitable crops, the profitability of the basin could have increased by up to 44.4 M€. In the case of saving this amount of groundwater, piezometric levels would have risen, decreasing the pumping costs and improving the environmental conditions in the area. Consequently, applying ORDIL in low-profit crops, such as barley, and in water scarce areas, could improve the profitability and/or the sustainability of agricultural systems, maintaining the production.

Suggested Citation

  • Pardo, J.J. & Domínguez, A. & Léllis, B.C. & Montoya, F. & Tarjuelo, J.M. & Martínez-Romero, A., 2022. "Effect of the optimized regulated deficit irrigation methodology on quality, profitability and sustainability of barley in water scarce areas," Agricultural Water Management, Elsevier, vol. 266(C).
  • Handle: RePEc:eee:agiwat:v:266:y:2022:i:c:s0378377422001202
    DOI: 10.1016/j.agwat.2022.107573
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    References listed on IDEAS

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    1. Domínguez, A. & Tarjuelo, J.M. & de Juan, J.A. & López-Mata, E. & Breidy, J. & Karam, F., 2011. "Deficit irrigation under water stress and salinity conditions: The MOPECO-Salt Model," Agricultural Water Management, Elsevier, vol. 98(9), pages 1451-1461, July.
    2. Leite, K.N. & Martínez-Romero, A. & Tarjuelo, J.M. & Domínguez, A., 2015. "Distribution of limited irrigation water based on optimized regulated deficit irrigation and typical metheorological year concepts," Agricultural Water Management, Elsevier, vol. 148(C), pages 164-176.
    3. Ortíz, J.N. & Tarjuelo, J.M. & de Juan, J.A., 2009. "Characterisation of evaporation and drift losses with centre pivots," Agricultural Water Management, Elsevier, vol. 96(11), pages 1541-1546, November.
    4. Martínez-Romero, A. & Domínguez, A. & Landeras, G., 2019. "Regulated deficit irrigation strategies for different potato cultivars under continental Mediterranean-Atlantic conditions," Agricultural Water Management, Elsevier, vol. 216(C), pages 164-176.
    5. Domínguez, A. & Martínez, R.S. & de Juan, J.A. & Martínez-Romero, A. & Tarjuelo, J.M., 2012. "Simulation of maize crop behavior under deficit irrigation using MOPECO model in a semi-arid environment," Agricultural Water Management, Elsevier, vol. 107(C), pages 42-53.
    6. Léllis, B.C. & Carvalho, D.F. & Martínez-Romero, A. & Tarjuelo, J.M. & Domínguez, A., 2017. "Effective management of irrigation water for carrot under constant and optimized regulated deficit irrigation in Brazil," Agricultural Water Management, Elsevier, vol. 192(C), pages 294-305.
    7. López-Urrea, R. & Domínguez, A. & Pardo, J.J. & Montoya, F. & García-Vila, M. & Martínez-Romero, A., 2020. "Parameterization and comparison of the AquaCrop and MOPECO models for a high-yielding barley cultivar under different irrigation levels," Agricultural Water Management, Elsevier, vol. 230(C).
    8. Qureshi, Zahid A. & Neibling, Howard, 2009. "Response of two-row malting spring barley to water cutoff under sprinkler irrigation," Agricultural Water Management, Elsevier, vol. 96(1), pages 141-148, January.
    9. Garrido-Rubio, Jesús & González-Piqueras, Jose & Campos, Isidro & Osann, Anna & González-Gómez, Laura & Calera, Alfonso, 2020. "Remote sensing–based soil water balance for irrigation water accounting at plot and water user association management scale," Agricultural Water Management, Elsevier, vol. 238(C).
    10. Domínguez, A. & de Juan, J.A. & Tarjuelo, J.M. & Martínez, R.S. & Martínez-Romero, A., 2012. "Determination of optimal regulated deficit irrigation strategies for maize in a semi-arid environment," Agricultural Water Management, Elsevier, vol. 110(C), pages 67-77.
    11. Domínguez, A. & Martínez-Navarro, A. & López-Mata, E. & Tarjuelo, J.M. & Martínez-Romero, A., 2017. "Real farm management depending on the available volume of irrigation water (part I): Financial analysis," Agricultural Water Management, Elsevier, vol. 192(C), pages 71-84.
    12. Martínez-Romero, A. & Martínez-Navarro, A. & Pardo, J.J. & Montoya, F. & Domínguez, A., 2017. "Real farm management depending on the available volume of irrigation water (part II): Analysis of crop parameters and harvest quality," Agricultural Water Management, Elsevier, vol. 192(C), pages 58-70.
    13. Pardo, J.J. & Martínez-Romero, A. & Léllis, B.C. & Tarjuelo, J.M. & Domínguez, A., 2020. "Effect of the optimized regulated deficit irrigation methodology on water use in barley under semiarid conditions," Agricultural Water Management, Elsevier, vol. 228(C).
    14. Domínguez, A. & Martínez-Romero, A. & Leite, K.N. & Tarjuelo, J.M. & de Juan, J.A. & López-Urrea, R., 2013. "Combination of typical meteorological year with regulated deficit irrigation to improve the profitability of garlic growing in central spain," Agricultural Water Management, Elsevier, vol. 130(C), pages 154-167.
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    2. Fan, Yunfei & He, Liuyue & Liu, Yi & Wang, Sufen, 2022. "Optimal cropping patterns can be conducive to sustainable irrigation: Evidence from the drylands of Northwest China," Agricultural Water Management, Elsevier, vol. 274(C).

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