Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes

Variation in trunk diameter (TDV) has been proposed as an indicator of the water status of grape vines, with apparently contradictory results. In Vitis vinifera L. var. Crimson Seedless we evaluated the water potential (Ψ), an indicator normally used to determine the water status of grapes,...

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Autores principales:	Silva-Contreras,Claudio, Sellés-Von Schouwen,Gabriel, Ferreyra-Espada,Raul, Silva-Robledo,Herman
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2012
Materias:	Water potential variable displacement sensor sensitivity itis vinifera
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400001
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spelling	oai:scielo:S0718-583920120004000012018-10-01Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapesSilva-Contreras,ClaudioSellés-Von Schouwen,GabrielFerreyra-Espada,RaulSilva-Robledo,Herman Water potential variable displacement sensor sensitivity itis vinifera Variation in trunk diameter (TDV) has been proposed as an indicator of the water status of grape vines, with apparently contradictory results. In Vitis vinifera L. var. Crimson Seedless we evaluated the water potential (Ψ), an indicator normally used to determine the water status of grapes, and TDV, comparing two irrigation treatments which restored 100% or 50% of the ETc, to compare the sensitivity of these two indicators to a decrease in soil water. Two evaluation periods of 23 d each were used, the first during the exponential growth phase and the second in the post-veraison period, when the trunk stops growing. In both periods TDV showed coefficients of variation greater than 25%, compared to the 7-10% recorded for water potential. However, during the first measuring period (82-105 d after bud break) the TDV of the treatment with water deficit decreased by more than 30%, while water potential only decreased from 6-12%. In the second measurement period (112-155 d after bud break) in which fruit growth is predominant, the control showed TDV values 100% greater than those of the treatment with water deficit, while the differences in water potential were between 10% and 13%. These results demonstrate the sensitivity of the continuous variation of the trunk diameter and the utility of TDV as a criterion for irrigation control, taking into consideration the development stage of the vines.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.72 n.4 20122012-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400001en10.4067/S0718-58392012000400001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Water potential variable displacement sensor sensitivity itis vinifera
spellingShingle	Water potential variable displacement sensor sensitivity itis vinifera Silva-Contreras,Claudio Sellés-Von Schouwen,Gabriel Ferreyra-Espada,Raul Silva-Robledo,Herman Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
description	Variation in trunk diameter (TDV) has been proposed as an indicator of the water status of grape vines, with apparently contradictory results. In Vitis vinifera L. var. Crimson Seedless we evaluated the water potential (Ψ), an indicator normally used to determine the water status of grapes, and TDV, comparing two irrigation treatments which restored 100% or 50% of the ETc, to compare the sensitivity of these two indicators to a decrease in soil water. Two evaluation periods of 23 d each were used, the first during the exponential growth phase and the second in the post-veraison period, when the trunk stops growing. In both periods TDV showed coefficients of variation greater than 25%, compared to the 7-10% recorded for water potential. However, during the first measuring period (82-105 d after bud break) the TDV of the treatment with water deficit decreased by more than 30%, while water potential only decreased from 6-12%. In the second measurement period (112-155 d after bud break) in which fruit growth is predominant, the control showed TDV values 100% greater than those of the treatment with water deficit, while the differences in water potential were between 10% and 13%. These results demonstrate the sensitivity of the continuous variation of the trunk diameter and the utility of TDV as a criterion for irrigation control, taking into consideration the development stage of the vines.
author	Silva-Contreras,Claudio Sellés-Von Schouwen,Gabriel Ferreyra-Espada,Raul Silva-Robledo,Herman
author_facet	Silva-Contreras,Claudio Sellés-Von Schouwen,Gabriel Ferreyra-Espada,Raul Silva-Robledo,Herman
author_sort	Silva-Contreras,Claudio
title	Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
title_short	Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
title_full	Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
title_fullStr	Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
title_full_unstemmed	Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
title_sort	variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400001
work_keys_str_mv	AT silvacontrerasclaudio variationofwaterpotentialandtrunkdiameteranswerassensitivitytothewateravailabilityintablegrapes AT sellesvonschouwengabriel variationofwaterpotentialandtrunkdiameteranswerassensitivitytothewateravailabilityintablegrapes AT ferreyraespadaraul variationofwaterpotentialandtrunkdiameteranswerassensitivitytothewateravailabilityintablegrapes AT silvarobledoherman variationofwaterpotentialandtrunkdiameteranswerassensitivitytothewateravailabilityintablegrapes
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Variation of water potential and trunk diameter answer as sensitivity to the water availability in table grapes

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