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Ten consecutive years of regulated deficit irrigation probe the sustainability and profitability of this water saving strategy in loquat

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  • Hueso, Juan J.
  • Cuevas, Julián

Abstract

The successful application of postharvest regulated deficit irrigation (RDI) over ten consecutive years (from season 1999/2000 to season 2007/2008) confirms the sustainability of this strategy for producing 'Algerie' loquat. Postharvest RDI consisting in a reduction of watering (between 45 and 80% depending on the season) from early June until the end of August, improved loquat profitability by increasing fruit value and by reducing water consumption with respect to fully irrigated trees (control). The increase in fruit value in RDI trees was due to a consistent improvement in harvest earliness as a result of an earlier blooming. Water savings of around 20% did not diminish yield nor fruit quality. Water use efficiency in RDI trees rose by over 30%. Water productivity reached 9.5[euro]m-3 of water applied in RDI trees versus 6.6[euro]m-3 in control trees. The most noticeable effect of RDI on vegetative growth was a significant and progressive decline in trunk growth. The canopy volume seems to be strongly influenced by pruning and no significant effects were detected in this parameter. Our results confirm the suitability of RDI in loquat and the economic benefits of saving water during the summer.

Suggested Citation

  • Hueso, Juan J. & Cuevas, Julián, 2010. "Ten consecutive years of regulated deficit irrigation probe the sustainability and profitability of this water saving strategy in loquat," Agricultural Water Management, Elsevier, vol. 97(5), pages 645-650, May.
    • Handle: RePEc:eee:agiwat:v:97:y:2010:i:5:p:645-650
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    References listed on IDEAS

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    1. Cuevas, Julian & Canete, Maria L. & Pinillos, Virginia & Zapata, Antonio J. & Fernandez, Maria D. & Gonzalez, Monica & Hueso, Juan J., 2007. "Optimal dates for regulated deficit irrigation in `Algerie' loquat (Eriobotrya japonica Lindl.) cultivated in Southeast Spain," Agricultural Water Management, Elsevier, vol. 89(1-2), pages 131-136, April.
    2. Cuevas, J. & Pinillos, V. & Caete, M.L. & Gonzlez, M. & Alonso, F. & Fernndez, M.D. & Hueso, J.J., 2009. "Optimal levels of postharvest deficit irrigation for promoting early flowering and harvest dates in loquat (Eriobotrya japonica Lindl.)," Agricultural Water Management, Elsevier, vol. 96(5), pages 831-838, May.
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    1. Arturo Calderón-Orellana, 2020. "Assessment of Different Weed Control Methods on Growth and Yield Performance of T. Aus Rice," Agricultural Research & Technology: Open Access Journal, Juniper Publishers Inc., vol. 24(3), pages 93-95, May.
    2. Ballester, Carlos & Buesa, Ignacio & Soler, Esteban & Besada, Cristina & Salvador, Alejandra & Bonet, Luis & Intrigliolo, Diego S., 2018. "Postharvest regulated deficit irrigation in early- and intermediate-maturing loquat trees," Agricultural Water Management, Elsevier, vol. 205(C), pages 1-8.
    3. Agüero Alcaras, L. Martín & Rousseaux, M. Cecilia & Searles, Peter S., 2021. "Yield and water productivity responses of olive trees (cv. Manzanilla) to post-harvest deficit irrigation in a non-Mediterranean climate," Agricultural Water Management, Elsevier, vol. 245(C).
    4. Ballester, C. & Buesa, I. & Bonet, L. & Intrigliolo, D.S., 2014. "Usefulness of stem dendrometers as continuous indicator of loquat trees water status," Agricultural Water Management, Elsevier, vol. 142(C), pages 110-114.
    5. Gasque, María & Martí, Pau & Granero, Beatriz & González-Altozano, Pablo, 2016. "Effects of long-term summer deficit irrigation on ‘Navelina’ citrus trees," Agricultural Water Management, Elsevier, vol. 169(C), pages 140-147.

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