Articles
The effect of canopy topping height on the qualitative and quantitative characters in ‘Mavrodafni’ grapes (Vitis vinifera L.)
Article number
1418_13
Pages
103 – 110
Language
English
Abstract
With the aim to strengthen the competitiveness of the sector, different cultivation techniques and practices were applied to the cultivation of grape cultivar ‘Mavrodafni’ at a pilot scale.
The application of new cultivation practices and procedures which are being evaluated in view of climate change could lead to an increase in the production of viticultural products as well as to a significant change of their qualitative characteristics, without exhausting the natural resources.
At the same time, there is an opportunity to develop new products, making the cultivation of wine grape cultivar ‘Mavrodafni’ particularly competitive.
Initially, productive vineyards where cultivar ‘Mavrodafni’ is being cultivated were identified.
Two canopy management techniques were applied, namely topping of the main shoots at two different height levels: control vines underwent topping at 6 nodes above the grape cluster (which is the usual viticultural technique) and vines which underwent topping at 10 nodes above the grape cluster.
The two treatments were then evaluated on the qualitative and quantitative characters of the grapes.
Regarding the effect of the two different canopy topping heights on the vines of cultivar ‘Mavrodafni’, the results showed that the vines with the lower topping height of the main shoots, recorded higher weight of grapes, while the vines that underwent the higher topping height of the main shoots, exhibited characters of the must of good quality (total soluble solids, pH, titratable acidity), which in combination with the high concentrations of sugars, suggest the production of grapes of better quality.
The application of new cultivation practices and procedures which are being evaluated in view of climate change could lead to an increase in the production of viticultural products as well as to a significant change of their qualitative characteristics, without exhausting the natural resources.
At the same time, there is an opportunity to develop new products, making the cultivation of wine grape cultivar ‘Mavrodafni’ particularly competitive.
Initially, productive vineyards where cultivar ‘Mavrodafni’ is being cultivated were identified.
Two canopy management techniques were applied, namely topping of the main shoots at two different height levels: control vines underwent topping at 6 nodes above the grape cluster (which is the usual viticultural technique) and vines which underwent topping at 10 nodes above the grape cluster.
The two treatments were then evaluated on the qualitative and quantitative characters of the grapes.
Regarding the effect of the two different canopy topping heights on the vines of cultivar ‘Mavrodafni’, the results showed that the vines with the lower topping height of the main shoots, recorded higher weight of grapes, while the vines that underwent the higher topping height of the main shoots, exhibited characters of the must of good quality (total soluble solids, pH, titratable acidity), which in combination with the high concentrations of sugars, suggest the production of grapes of better quality.
Publication
Authors
M. Stavrakaki, X. Konstantinou, I. Daskalakis, D. Bouza, K. Biniari
Keywords
topping, canopy management, grapevine, sugars, Vitis vinifera L
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