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Technical Brief

A Device Enabling Fully Automated Water-Deficit Experiments with Potted Grapevines

Stefano Poni, Marco Galbignani, Fabio Bernizzoni, Maria Inmaculada Talaverano, Eugenio Magnanini
Am J Enol Vitic. May 2015 66: 251-255; published ahead of print January 16, 2015 ; DOI: 10.5344/ajev.2014.14109
Stefano Poni
1Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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  • For correspondence: stefano.poni@unicatt.it
Marco Galbignani
1Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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Fabio Bernizzoni
1Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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Maria Inmaculada Talaverano
2CICYTEX, Technological Institute of Food and Agriculture (INTAEX), (Government of 8 Extremadura), Av. Adolfo Suárez, s/n 06071 Badajoz, Spain
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Eugenio Magnanini
1Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
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Abstract

Here, we describe a novel device for programming and replenishing water transpired by potted plants. To test the robustness of the system, vines were subjected to progressive water stress (WS), the severity of which was maintained in relation to transpiration (Tc) of well-watered (WW) plants. Throughout the 40-day experiment, water supply in the WS treatment was progressively lowered to 70, 50, and 30% of WW Tc prior to rewatering. During the same stages, mean Tc of WS plants was 74, 48, 28, and 93% that of WW plants. Linear relationships between vine transpiration and water supply during the 40-day experiment (R2 = 0.95 for WW and 0.94 for WS) confirmed the reliability of the system in providing a water supply that closely tracked measured transpiration. The emptying volume of the cylinder tank was set at 265 mL and proved to be adequate for daily water losses, which ranged from ~300 to 2300 mL. In addition to relieving operators of laborious and time-consuming manual irrigation, the system provides the ability to adjust water supply to actual water use as measured concurrently in a grapevine-enclosure system and enables customization of the water supply according to the size and transpiration potential of each vine.

  • chamber system
  • water supply
  • transpiration
  • potted vines
  • Received September 2014.
  • Revision received November 2014.
  • Accepted November 2014.
  • ©2015 by the American Society for Enology and Viticulture
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A Device Enabling Fully Automated Water-Deficit Experiments with Potted Grapevines
Stefano Poni, Marco Galbignani, Fabio Bernizzoni, Maria Inmaculada Talaverano, Eugenio Magnanini
Am J Enol Vitic.  May 2015  66: 251-255;  published ahead of print January 16, 2015 ; DOI: 10.5344/ajev.2014.14109

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A Device Enabling Fully Automated Water-Deficit Experiments with Potted Grapevines
Stefano Poni, Marco Galbignani, Fabio Bernizzoni, Maria Inmaculada Talaverano, Eugenio Magnanini
Am J Enol Vitic.  May 2015  66: 251-255;  published ahead of print January 16, 2015 ; DOI: 10.5344/ajev.2014.14109
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