Keywords
Abstract
introduction of new clones of European grapevine cultivars in Crimea
calls for examination of the bush productivity criterion along with the
quality of the final product obtained in a particular natural and climatic
region of Crimea. Gaps in the knowledge of agrobiological and economically valuable properties of new clones of wine cultivars, the lack of data
on quality characteristics of the raw materials in Crimea without established optimal parameters of varietal agricultural practices reduces
cultivation efficiency. the above calls for a comprehensive assessment
of the new for Crimea clones of European grapevine cultivars, and for
development of varietal agricultural practices accompanied by their viability assessment, which would facilitate a more effective and targeted
use of the biological and potential capabilities of new grapevine clones.
therefore, our study aims to establish basic agrobiological, quantitative and qualitative characteristics of the studied grapevine clones, and
assess their cultivation prospects depending on such agro-technical
factors as the optimal bush load and the fruit cane pruning length in the
conditions of the southern coast of Crimea. the obtained experimental
data revealed that the studied clones ‘aleatico 802’, ‘Muscat Belyi VCr-
3’ and ‘Cabernet Sauvignon r-5’ have a rather high fruiting ability of
wintering eyes and shoot formation with high fruit-bearing capacity
and fertility ratios as compared to standard varieties. the revealed patterns allowed establishing a rational training of clones of the European
grapevine cultivars and the eye load per bush, the fruit cane pruning
length and the influence of the studied agricultural practices on grape
quality. the tall trunk training system – “azos-1” on one-wired trellis
increased productivity of clones of ‘aleatiko 802’ and ‘Muscat Belyi
VCr-3’ grapes, while the bush shape unilateral horizontal cordon on
medium height trunk increased sugar accumulation in the juice of the
fruit of clone of ‘Muscat Belyi VCr-3’. Bush load increase from 24 to 36
shoots per bush in the clone of ‘Cabernet Sauvignon’ grapes increased
the yield from 12.2 t/ha to 14.8 t/ha, with a slight decrease in the sugar
content of the juice from 23.1 g /100 cm3 to 22.3 g /100 cm3.