Influence of Deficit Irrigation on (V. vinifera L.) cv. Fantasy Seedless Under Mediterranean Climate: Physiological Responses, Growth, Yield and Quality

Autor: Ahmet Altindişli, Oğuzhan Soltekin
Rok vydání: 2021
Předmět:
Zdroj: Erwerbs-Obstbau. 63:101-113
ISSN: 1439-0302
0014-0309
DOI: 10.1007/s10341-021-00587-1
Popis: Yield and quality attributes of table grapes are directly depending on water availability. Therefore water is critical factor for the sustainability in the Mediterranean zone. Climate change and water scarcity cause serious problems in these areas. Different strategies that save water in semi-arid regions have gradually gained importance and deficit irrigation treatments have emerged in order to maintain yield and quality in modern viticulture. In this context, the effects of deficit irrigation practices on physiological reactions, vine growth, yield and quality attributes in field grown cv. Fantasy Seedless table grape were examined during 2016 and 2017 seasons in this paper. Three treatments were applied: Ir 100 (control) irrigated to the field capacity, Ir 65 and Ir 35 irrigated of 65% and 35% of Ir 100 treatment, respectively. Significant effects on physiological responses, vine growth, yield and quality attributes were observed depending on soil water content and vine water potential. For all treatments, significant correlation was determined between g(s) and psi(md). As the water stress level increased, stomatal conductivity decreased in both two years. In 2016, the higher yield was obtained from Ir 100, while in 2017 it was obtained from both Ir 100 and Ir 65. There was a significant correlation between psi(md) and pruning wood weight (PWW). Moreover, vine vigor, ravaz index (IR) and PWW reduced much more under Ir 35 (18.6%, 19.7%, 22.6% respectively). Ir 100 had 5.1% and 7.9% higher (significantly) berry weight values than Ir 65 and Ir 35 in 2017. Whereas, there was no significant difference in 2016. On the other hand, Ir 65 had 15% higher WUE and 25% lower ET than Ir 100 while Ir 35 had 50% higher WUE and 47% lower ET than Ir 100. Consequently, to avoid severe reduction in yield, vine performance and quality attributes in this cultivar, we suggested optimization of yield and quality balance considering physiological responses and ET. Therefore Ir 65 treatment displayed more tolerant in comparison to Ir 35.
Republic of Turkey, Ministry of Agriculture and Forestry
This study is a part of General Directorate of Agricultural Research and Policies (GDAR) project of the corresponding author. It was supported by the Republic of Turkey, Ministry of Agriculture and Forestry.
Databáze: OpenAIRE
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