The Effects of the Summer Pruning Operations on the Winter Buds Productivity of cv. Vranec (Vitis vinifera L.)

Nedelkovski, Dushko; Roychev, V.; Beleski, Klime; Mokreva, Todorka

doi:10.7251/agren1703155n

Cited by 3 publications

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“…Working on Sangiovese, Storchi e Mattii [5] reported that photosynthetic activity and leaf water potential were greater at higher altitudes while no effect on total soluble solids was found. Little information is available on the mechanical properties of the berries; Nedelkovski et al [6] report that the different altitudes did not have a significant effect on the epidermal layer thickness. Contrarily, more than a few studies have examined the effects of vineyard altitude on phenolic and aromatic compound in grapes and wines from different vine growing areas.…”

Section: Introductionmentioning

confidence: 99%

Yield and grape quality of three red grapevine cultivars (Vitis vinifera L.) in relation to altimetry

et al. 2019

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Environment has a great impact on berry composition. In this context we investigated the quality of extremely widespread grape varieties in Sardinia, cvs. Cannonau, Bovale sardo and Monica, cultivated at different altitudes. The work was conducted in a two-year period in two vineyards located respectively at 500 and 700 meters above sea level. Viticultural model and cultivation practices were the same for both vineyards. The following measurements were noted: (i) main phenological phases, (ii) yield and its components, (iii) must quality from veraison to harvest, and (iv) anthocyanin qualitative profiles at harvest. At higher altitude the phenological phases are delayed. Yield was not statistically influenced by altitude. The ripening of the main technological parameters, although similar among the vineyards, suggests that the effects of the different altitude are clear, but they vary according to year and are cultivar dependent. In cv. Cannonau, higher altitude promoted higher total soluble solids. The extractable anthocyanins were not influenced by altitude, although in all tested varieties the higher altitude favored a decrease in the ratio between non-acylated and acylated anthocyanins.

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Section: Introductionmentioning

confidence: 99%

Yield and grape quality of three red grapevine cultivars (Vitis vinifera L.) in relation to altimetry

et al. 2019

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Effect of green pruning on the fruitfulness of winter buds, quantity and quality of yield in Cabernet Franc cultivar

Emurlova,

Ivanov

2023

AST

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Abstract. A study was conducted to investigate the effect of bunch normalization and defoliation on winter eye fertility, quantity and yield quality in Cabernet Franc. It was found that the application of green pruning resulted in an increase in mass per bunch and per 100 grains, but a decrease in yield per vine. The sugar content increased slightly in the green pruned variants. In the two-year period of the study, high temperatures and low rainfall during the growing season reduced the effect of bunch rationing and defoliation on grape yield and quality. There was no significant difference in grape quality between the treatments under high temperatures. After the hot and dry year of 2021, lower values of the actual fertility indicators - percentage of fruiting shoots and fertility coefficient - were observed in 2022.

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The Effects of Temperature and Potassium Fertilizer on the Growth, Yield, and Biochemical Parameters of Ipomoea batatas var. Antin-1

et al. 2020

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The impact of temperature and potassium fertilizers on the growth, yield, and basic biochemical characteristics of sweet potato, <em>Ipomoea batatas </em>var. Antin- 1, was investigated in lowland and highland terrains. In this study we aimed to determine the different traits of the sweet potato, based on its morphology, physiology, and biochemical composition, following treatments with a potassium fertilizer at different temperatures. The study was undertaken using a nested factorial design. The first factor was temperature at each of the two sites: T1 (lowland) and T2 (highland). The second factor was potassium fertilizer (K<sub>2</sub>O) nested within the temperature factor and consisting of four levels of K: K0 (0 kg/ha), K1 (50 kg/ha), K2 (100 kg/ha), and K3 (150 kg/ha). Each potassium treatment was replicated three times at each location. Plant vegetative growth in the lowland region, with a daily average temperature of 26.8 °C, tended to be more bushy, with several different morphological properties: The main stem was longer (160.7 cm) and spreading, the stem diameter was greater, and the petioles were significantly longer in the lowland plants compared with the highland plants; however, no differences were observed in the leaf characteristics. The differential temperature (depending on altitude) resulted in significant differences in relative growth rates (RGR) and net assimilation rates (NAR); the values for RGR-1 and NAR-1 in the lowlands were higher than those in the highlands. The tuber weight, yield index, anthocyanin accumulation, and glucose content were significantly higher in the highland crops than in the lowland plants, which grew under relatively higher temperatures. Potassium applications caused significant differences in the anthocyanin content (mg/100 g fresh weight), anthocyanin production (kg/ha), and glucose production (kg/ha) at different locations.

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The Effects of the Summer Pruning Operations on the Winter Buds Productivity of cv. Vranec (Vitis vinifera L.)

Cited by 3 publications

References 0 publications

Yield and grape quality of three red grapevine cultivars (Vitis vinifera L.) in relation to altimetry

Yield and grape quality of three red grapevine cultivars (Vitis vinifera L.) in relation to altimetry

Effect of green pruning on the fruitfulness of winter buds, quantity and quality of yield in Cabernet Franc cultivar

The Effects of Temperature and Potassium Fertilizer on the Growth, Yield, and Biochemical Parameters of Ipomoea batatas var. Antin-1

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