BUNCH LOAD AS A FACTOR ON THE QUALITY OF THE GRAPEVINE VARIETIES Ã¢â ¬Ë RIBIERâ⠬⠢ AND Ã¢â ¬Ë ITALIAâ⠬⠢
Journal
The Journal "Agriculture and Forestry"
Date Issued
2024-06-30
Author(s)
PRCULOVSKI, Zlatko
PETKOV, Mihail
BOSKOV, Krum
POPOVIC, Tatjana
KORUNOVSKA, Biljana
DOI
10.17707/agricultforest.70.2.12
Abstract
The application of ampelotechnical measures in table grape production
profoundly affects grape yield and quality. This study aims to assess the influence of
the ampelotechnical practice of bunch thinning on the yield and quality of Ribier and
Muscat Italia grape varieties. The research was conducted over three consecutive
years on production plantations of Ribier and Muscat Italia varieties grown on
pergola training system with a planting distance of 2.5 x 2.5 m. The plantations are
in full fertility, aged between 12-15 years, located in the Gevgelija-Valandovo
vineyard, renowned as one of the most suitable sites for cultivating table grapes in
the Republic of Macedonia. Three different bunch thinning variants were applied in
both varieties: V1 (thinning to 4 bunches/m2
), V2 (thinning to 5 bunches/m2
), and
V3 (thinning to 6 bunches/m2
). These were compared with the standard variant
where no bunch thinning was performed.
Our research findings demonstrate that the applied ampelotechnical measure
significantly impacts the average bunch and berry mass, transportability, must
chemical composition, packed grape quantity, and organoleptic evaluation of the
grapes. The average bunch mass of the Ribier variety ranges from 381,3 g in the
standard (St) variant to 445,7 g in the V1 variant. Similarly, in the Italia variety, the
bunch mass fluctuates between 607.3 g (St variant) and 703,0 g in the V1 variant,
while the berry mass ranges from 7,5 g (St) to 8,5 g (V1). Moreover, the packed
grape quantities range from 1,9 kg/m2
in the standard variant to 2,31 kg/m2
in the V2
variant for the Ribier variety, whereas for the Italia variety, the lowest amount of
packed grapes was recorded in the V1 variant (2,65 kg/m2
), and the highest in the V3 variant (3,27 kg/m2
). Notably, the organoleptic evaluation of the grapes was
influenced by bunch thinning. The V1 and V2 variants in both varieties received
better ratings compared to the other variants, with the Ribier variety rated as
excellent quality and the Italia variety as extra quality.
profoundly affects grape yield and quality. This study aims to assess the influence of
the ampelotechnical practice of bunch thinning on the yield and quality of Ribier and
Muscat Italia grape varieties. The research was conducted over three consecutive
years on production plantations of Ribier and Muscat Italia varieties grown on
pergola training system with a planting distance of 2.5 x 2.5 m. The plantations are
in full fertility, aged between 12-15 years, located in the Gevgelija-Valandovo
vineyard, renowned as one of the most suitable sites for cultivating table grapes in
the Republic of Macedonia. Three different bunch thinning variants were applied in
both varieties: V1 (thinning to 4 bunches/m2
), V2 (thinning to 5 bunches/m2
), and
V3 (thinning to 6 bunches/m2
). These were compared with the standard variant
where no bunch thinning was performed.
Our research findings demonstrate that the applied ampelotechnical measure
significantly impacts the average bunch and berry mass, transportability, must
chemical composition, packed grape quantity, and organoleptic evaluation of the
grapes. The average bunch mass of the Ribier variety ranges from 381,3 g in the
standard (St) variant to 445,7 g in the V1 variant. Similarly, in the Italia variety, the
bunch mass fluctuates between 607.3 g (St variant) and 703,0 g in the V1 variant,
while the berry mass ranges from 7,5 g (St) to 8,5 g (V1). Moreover, the packed
grape quantities range from 1,9 kg/m2
in the standard variant to 2,31 kg/m2
in the V2
variant for the Ribier variety, whereas for the Italia variety, the lowest amount of
packed grapes was recorded in the V1 variant (2,65 kg/m2
), and the highest in the V3 variant (3,27 kg/m2
). Notably, the organoleptic evaluation of the grapes was
influenced by bunch thinning. The V1 and V2 variants in both varieties received
better ratings compared to the other variants, with the Ribier variety rated as
excellent quality and the Italia variety as extra quality.
Subjects
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