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Sustainability and environmental assessment of fertigation in an intensive olive grove under Mediterranean conditions

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  • Cameira, M.R.
  • Pereira, A.
  • Ahuja, L.
  • Ma, L.

Abstract

Water and nitrogen surpluses are major concern for the new intensive olive groves in South of Portugal. In this study, field measurements were integrated with a system model, Root Zone Water Quality Model (RZWQM2) to assess the sustainability and environmental impact of fertigation in an intensive olive grove (Olea europaea L. var. Arbequina). The model provided acceptable predictions of evapotranspiration, soil moisture and nitrate contents. Based on model simulations, under current fertigation practices, 57% of the irrigation applied was lost via drainage, while 71% and 5% of fertilizer N inputs were lost through leaching and denitrification, respectively. The non-fertilizer N input from soil organic matter (OM) satisfied 64% of the crop N needs. The tested model was used to predict the impacts of a full irrigation (FIFC) and two regulated deficit irrigation schemes (RDI75, RDI50) on drainage and N leaching. In FIFC the atmospheric demand was met while the application frequency maintained the water storage below the soil field capacity. In RDI75 and RDI50 the irrigation application amount between stone hardening and onset of ripening was 75 and 50% of FIFC respectively.

Suggested Citation

  • Cameira, M.R. & Pereira, A. & Ahuja, L. & Ma, L., 2014. "Sustainability and environmental assessment of fertigation in an intensive olive grove under Mediterranean conditions," Agricultural Water Management, Elsevier, vol. 146(C), pages 346-360.
    • Handle: RePEc:eee:agiwat:v:146:y:2014:i:c:p:346-360
    DOI: 10.1016/j.agwat.2014.09.007
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    1. Er-Raki, S. & Chehbouni, A. & Boulet, G. & Williams, D.G., 2010. "Using the dual approach of FAO-56 for partitioning ET into soil and plant components for olive orchards in a semi-arid region," Agricultural Water Management, Elsevier, vol. 97(11), pages 1769-1778, November.
    2. Ramos, Alice F. & Santos, Francisco L., 2010. "Yield and olive oil characteristics of a low-density orchard (cv. Cordovil) subjected to different irrigation regimes," Agricultural Water Management, Elsevier, vol. 97(2), pages 363-373, February.
    3. Gardenas, A.I. & Hopmans, J.W. & Hanson, B.R. & Simunek, J., 2005. "Two-dimensional modeling of nitrate leaching for various fertigation scenarios under micro-irrigation," Agricultural Water Management, Elsevier, vol. 74(3), pages 219-242, June.
    4. Cameira, M.R. & Fernando, R.M. & Ahuja, L.R. & Ma, L., 2007. "Using RZWQM to simulate the fate of nitrogen in field soil-crop environment in the Mediterranean region," Agricultural Water Management, Elsevier, vol. 90(1-2), pages 121-136, May.
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    Cited by:

    1. Luis Gomes & Tânia Nobre & Adélia Sousa & Fernando Rei & Nuno Guiomar, 2020. "Hyperspectral Reflectance as a Basis to Discriminate Olive Varieties—A Tool for Sustainable Crop Management," Sustainability, MDPI, vol. 12(7), pages 1-21, April.
    2. Ramos, Tiago B. & Darouich, Hanaa & Oliveira, Ana R. & Farzamian, Mohammad & Monteiro, Tomás & Castanheira, Nádia & Paz, Ana & Alexandre, Carlos & Gonçalves, Maria C. & Pereira, Luís S., 2023. "Water use, soil water balance and soil salinization risks of Mediterranean tree orchards in southern Portugal under current climate variability: Issues for salinity control and irrigation management," Agricultural Water Management, Elsevier, vol. 283(C).
    3. Ramos, Tiago B. & Darouich, Hanaa & Šimůnek, Jiří & Gonçalves, Maria C. & Martins, José C., 2019. "Soil salinization in very high-density olive orchards grown in southern Portugal: Current risks and possible trends," Agricultural Water Management, Elsevier, vol. 217(C), pages 265-281.
    4. José Rato-Nunes & José Telo-da-Gama & David Peña & Luís Loures & Angel Albaran & Damian Fernández-Rodríguez & Luis Vicente & António López-Piñeiro, 2024. "Hedgerow Olive Orchards versus Traditional Olive Orchards: Impact on Selected Soil Chemical Properties," Agriculture, MDPI, vol. 14(2), pages 1-19, February.
    5. Ramos, Tiago B. & Darouich, Hanaa & Oliveira, Ana R. & Farzamian, Mohammad & Monteiro, Tomás & Castanheira, Nádia & Paz, Ana & Gonçalves, Maria C. & Pereira, Luís S., 2023. "Water use and soil water balance of Mediterranean tree crops assessed with the SIMDualKc model in orchards of southern Portugal," Agricultural Water Management, Elsevier, vol. 279(C).
    6. Ortega-Reig, M. & Sanchis-Ibor, C. & Palau-Salvador, G. & García-Mollá, M. & Avellá-Reus, L., 2017. "Institutional and management implications of drip irrigation introduction in collective irrigation systems in Spain," Agricultural Water Management, Elsevier, vol. 187(C), pages 164-172.

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