Effect of Post-Veraison Irrigation Level on Sauvignon blanc Yield, Juice Quality and Water Relations

  • A. Naor The Golan Research Institute, Kazrin
  • B. Bravdo Department of Viticulture, The Hewbrew University of Jerusalem, Rehovot
  • Y. Hepner Department of Viticulture, The Hewbrew University of Jerusalem, Rehovot
DOI: https://doi.org/10.21548/14-2-2172

Abstract

Low (L), medium (M) and high (H) post-veraison daily irrigation levels (1 mm, 2 mm and 3,5 mm, respectively) were applied in a Sauvignon blanc vineyard in the Golan Heights of Israel. Juice Brix levels were higher in the H treatment than in the L treatment. Yields were higher in H treatment than in L treatment in years with high crop level. Shoot elongation ceased at veraison in all three treatments. Average midday leaf water potential (LWP) was -1,4 MPa and -1,9 MPa in the Hand L treatments, respectively. Lower stomata! resistance (R,J was found in the H treatment compared to those in the L and M treatments. A negative correlation between Rs and LWP was observed. Leaf temperatures were higher in the L treatment than in the H treatment. This was mainly attributed to the difference in Rs between treatments. The apparent relationship between R8 and LWP suggests the use of canopy heat balance for irrigation management in warm regions, provided that satisfactory methodologies for boundary-layer resistance and the evaluation of net radiation in vineyards are developed.

Downloads

Download data is not yet available.
Published
2017-05-03
Issue
Vol. 14 No. 2 (1993)
Section
Articles

Copyright (c) 2017 South African Society for Enology and Viticulture

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A copyright form will be e-mailed to the corresponding author when the manuscript has been accepted for publication.

 

In principle, the Author agrees to the following when he/she signes the copyright agreement:

I hereby assign to the SOUTH AFRICAN SOCIETY FOR ENOLOGY AND VITICULTURE (SASEV) the copyright of the text, tables, figures, supplementary material, illustrations and other information (the Material) submitted with the manuscript to be published in SOUTH AFRICAN JOURNAL OF ENOLOGY AND VITICULTURE (SAJEV) (the "Article"). The copyright becomes effective from the date the Article has been accepted for publication in SAJEV.

 

This is an open access journal, and the authors and journal should be properly acknowledged, when works are cited.

Author's may use the publishers version for teaching purposes, in books, theses, dissertations, conferences and conference papers.

A copy of the authors' publishers version may also be hosted on the following websites:

  • Non-commercial personal webpage or blog.
  • Institutional webpage.
  • Authors Institutional Repository.

The following notice should accompany such a posting on the website: This is an electronic version of an article published in SAJEV, Volume XXX, number XXX, pages XXX - XXX, DOI.   Authors should also supply a hyperlink to the original paper or indicate where the original paper (www.journals.ac.za/index.php/sajev/) may be found.

Authors publishers version, affiliated with the Stellenbosch University will be automatically deposited in the University's Institutional Repository SUNScholar.

Articles as a whole, may not be re-published with another journal.

The following license applies:

Attribution CC BY-NC-ND 4.0