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Simulation of maize crop behavior under deficit irrigation using MOPECO model in a semi-arid environment

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  • Domínguez, A.
  • Martínez, R.S.
  • de Juan, J.A.
  • Martínez-Romero, A.
  • Tarjuelo, J.M.

Abstract

Through the experimental data of a three year maize field test, this paper shows the calibration (year 2003) and validation (years 2001 and 2002) processes for the simulation of FAO-700 maize crop (Dracma and Brasco hybrids) under deficit irrigation conditions in Castilla-La Mancha (Spain) using the MOPECO model. Key objectives of this research were: (1) determining the length of growth stages using the growing-degree-days (GDD) method; (2) an analysis of the effect of saline irrigation water on crop yield; and (3) a sensitivity analysis of the main factors affecting gross margin (i.e. irrigation water cost, harvest sale price, and uniformity of irrigation). Results show that MOPECO is suitable for simulating the yield versus total water (gross irrigation+effective rainfall) relationships under the climatic and soil conditions in this study (RMSE=1199kgha−1, relative error=7.7%, and similarity rate=0.94, between observed and simulated yields). GDD for the whole growth cycle is around 1802.8°C, while calibrated crop coefficient (Kc) and crop yield response (ky) values for the four growth stages proposed by FAO-56 are similar to those presented in the literature, which provides evidence that this methodology is appropriate for simulating the behavior of herbaceous crops such as maize under different scenarios of water supply. The electrical conductivity of the irrigation water in the area (0.85dSm−1) does not significantly affect the final yield of this crop (up to 4.7% higher without considering the effect of salinity) for the irrigation amount commonly applied in the area (around 650mm). Under the current harvest sale price scenario (0.15€kg−1), costs have greatly decreased the profitability of maize in the area, reaching 400€ha−1. Changing the management of the crop for deficit irrigation strategies may save water that can be used by other crops, thereby obtaining a higher gross margin on farms.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:agiwat:v:107:y:2012:i:c:p:42-53
    DOI: 10.1016/j.agwat.2012.01.006
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    1. Wang, Yufeng & Kang, Shaozhong & Li, Fusheng & Zhang, Xiaotao, 2021. "Modified water-nitrogen productivity function based on response of water sensitive index to nitrogen for hybrid maize under drip fertigation," Agricultural Water Management, Elsevier, vol. 245(C).
    2. Minhas, P.S. & Ramos, Tiago B. & Ben-Gal, Alon & Pereira, Luis S., 2020. "Coping with salinity in irrigated agriculture: Crop evapotranspiration and water management issues," Agricultural Water Management, Elsevier, vol. 227(C).
    3. López-Mata, E. & Orengo-Valverde, J.J. & Tarjuelo, J.M. & Martínez-Romero, A. & Domínguez, A., 2016. "Development of a direct-solution algorithm for determining the optimal crop planning of farms using deficit irrigation," Agricultural Water Management, Elsevier, vol. 171(C), pages 173-187.
    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. 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).
    6. Karam, F. & Amacha, N. & Fahed, S. & EL Asmar, T. & Domínguez, A., 2014. "Response of potato to full and deficit irrigation under semiarid climate: Agronomic and economic implications," Agricultural Water Management, Elsevier, vol. 142(C), pages 144-151.
    7. Domínguez, Alfonso & Schwartz, Robert C. & Pardo, José J. & Guerrero, Bridget & Bell, Jourdan M. & Colaizzi, Paul D. & Louis Baumhardt, R., 2022. "Center pivot irrigation capacity effects on maize yield and profitability in the Texas High Plains," Agricultural Water Management, Elsevier, vol. 261(C).
    8. 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).
    9. Pardo, J.J. & Sánchez-Virosta, A. & Léllis, B.C. & Domínguez, A. & Martínez-Romero, A., 2022. "Physiological basis to assess barley response to optimized regulated deficit irrigation for limited volumes of water (ORDIL)," Agricultural Water Management, Elsevier, vol. 274(C).
    10. 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).
    11. Lima, F.A & Martínez-Romero, A. & Tarjuelo, J.M. & Córcoles, J.I., 2018. "Model for management of an on-demand irrigation network based on irrigation scheduling of crops to minimize energy use (Part I): Model Development," Agricultural Water Management, Elsevier, vol. 210(C), pages 49-58.
    12. 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.
    13. Léllis, B.C. & Martínez-Romero, A. & Schwartz, R.C. & Pardo, J.J. & Tarjuelo, J.M. & Domínguez, A., 2022. "Effect of the optimized regulated deficit irrigation methodology on water use in garlic," Agricultural Water Management, Elsevier, vol. 260(C).
    14. 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.
    15. 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.
    16. Lima, F.A. & Córcoles, J.I. & Tarjuelo, J.M. & Martínez-Romero, A., 2019. "Model for management of an on-demand irrigation network based on irrigation scheduling of crops to minimize energy use (Part II): Financial impact of regulated deficit irrigation," Agricultural Water Management, Elsevier, vol. 215(C), pages 44-54.
    17. 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.
    18. Nascimento, A.K & Schwartz, R.C. & Lima, F.A & López-Mata, E. & Domínguez, A. & Izquiel, A. & Tarjuelo, J.M & Martínez-Romero, A, 2019. "Effects of irrigation uniformity on yield response and production economics of maize in a semiarid zone," Agricultural Water Management, Elsevier, vol. 211(C), pages 178-189.
    19. 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.
    20. López-Mata, E. & Tarjuelo, J.M. & Orengo-Valverde, J.J. & Pardo, J.J. & Domínguez, A., 2019. "Irrigation scheduling to maximize crop gross margin under limited water availability," Agricultural Water Management, Elsevier, vol. 223(C), pages 1-1.
    21. Schwartz, Robert C. & Domínguez, Alfonso & Pardo, José J. & Colaizzi, Paul D. & Baumhardt, R. Louis & Bell, Jourdan M., 2020. "A crop coefficient –based water use model with non-uniform root distribution," Agricultural Water Management, Elsevier, vol. 228(C).
    22. Martínez-Romero, A. & López-Urrea, R. & Montoya, F. & Pardo, J.J. & Domínguez, A., 2021. "Optimization of irrigation scheduling for barley crop, combining AquaCrop and MOPECO models to simulate various water-deficit regimes," Agricultural Water Management, Elsevier, vol. 258(C).

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