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Sensitivity of root pruned ‘Conference’ pear to water deficit in a temperate climate

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  • Janssens, Pieter
  • Deckers, Tom
  • Elsen, Frank
  • Elsen, Annemie
  • Schoofs, Hilde
  • Verjans, Wim
  • Vandendriessche, Hilde

Abstract

The present study examines the need for irrigation in pear trees (Pyrus Communis, cv. ‘Conference’) under low evaporative demand conditions, like in Belgium, in order to maintain a consistent fruit yield and high fruit size. To determine the sensitivity of the pear yield under low evaporative demand conditions three different orchards were monitored. The study shows that a Ψsoil of −60kPa during shoot growth has no effect on fruit yield but lower Ψsoil values induced a decline in both fruit size and total yield. Just as for arid environments a Ψstem of −1.5MPa is related to negative yield responses. In dry conditions lower Ψsoil and Ψstem values were observed in root pruned trees compared to not root pruned trees in the same irrigation treatment, however without yield decline. In one orchard a biannual bearing tendency was observed after root pruning. Furthermore intensive Ψsoil measurements show a high variation in Ψsoil between orchards, and within an orchard. This underlines the need for irrigation management on a parcel level and the need for new irrigation scheduling techniques which take the spatial variation in the orchard into account.

Suggested Citation

  • Janssens, Pieter & Deckers, Tom & Elsen, Frank & Elsen, Annemie & Schoofs, Hilde & Verjans, Wim & Vandendriessche, Hilde, 2011. "Sensitivity of root pruned ‘Conference’ pear to water deficit in a temperate climate," Agricultural Water Management, Elsevier, vol. 99(1), pages 58-66.
    • Handle: RePEc:eee:agiwat:v:99:y:2011:i:1:p:58-66
    DOI: 10.1016/j.agwat.2011.07.018
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    References listed on IDEAS

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    1. Ma, Fusheng & Kang, Shaozhong & Li, Fusheng & Zhang, Jianhua & Du, Taisheng & Hu, Xiaotao & Wang, Mixia, 2007. "Effect of water deficit in different growth stages on stem sap flux of greenhouse grown pear-jujube tree," Agricultural Water Management, Elsevier, vol. 90(3), pages 190-196, June.
    2. Gong, Daozhi & Kang, Shaozhong & Zhang, Lu & Du, Taisheng & Yao, Limin, 2006. "A two-dimensional model of root water uptake for single apple trees and its verification with sap flow and soil water content measurements," Agricultural Water Management, Elsevier, vol. 83(1-2), pages 119-129, May.
    3. Cui, Ningbo & Du, Taisheng & Li, Fusheng & Tong, Ling & Kang, Shaozhong & Wang, Mixia & Liu, Xiaozhi & Li, Zhijun, 2009. "Response of vegetative growth and fruit development to regulated deficit irrigation at different growth stages of pear-jujube tree," Agricultural Water Management, Elsevier, vol. 96(8), pages 1237-1246, August.
    4. Intrigliolo, D.S. & Castel, J.R., 2006. "Performance of various water stress indicators for prediction of fruit size response to deficit irrigation in plum," Agricultural Water Management, Elsevier, vol. 83(1-2), pages 173-180, May.
    5. Cui, Ningbo & Du, Taisheng & Kang, Shaozhong & Li, Fusheng & Zhang, Jianhua & Wang, Mixia & Li, Zhijun, 2008. "Regulated deficit irrigation improved fruit quality and water use efficiency of pear-jujube trees," Agricultural Water Management, Elsevier, vol. 95(4), pages 489-497, April.
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    1. Janssens, Pieter & Diels, Jan & Vanderborght, Jan & Elsen, Frank & Elsen, Annemie & Deckers, Tom & Vandendriessche, Hilde, 2015. "Numerical calculation of soil water potential in an irrigated ‘conference’ pear orchard," Agricultural Water Management, Elsevier, vol. 148(C), pages 113-122.
    2. Wang, Yufei & Bertelsen, Marianne G. & Petersen, Karen K. & Andersen, Mathias N. & Liu, Fulai, 2014. "Effect of root pruning and irrigation regimes on leaf water relations and xylem ABA and ionic concentrations in pear trees," Agricultural Water Management, Elsevier, vol. 135(C), pages 84-89.

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