Characterization of Phenological Performance, Thermal Demand Requirements and Qualitative Potential of Wine Grape Cultivars Under Double Pruning Management

• DOI: 10.20944/preprints202505.0909.v1
• Publication Date: 2025-05-14T02:38:02Z
• Authors: Carolina Ragoni M...; Marco Antonio Tec...; Harleson Sidney A...; Camilo André Pere...; Giuliano Elias Pe...; Juliane Barreto d...; Sinara de Nazaré ...; Francisco José Do...; Sarita Leonel; Marcelo de Souza ...; Ricardo Figueira; Pricila Veiga dos...
• Keywords: Pruning; Characterization

The production of winter wines in the Southeastern Brazil represents a relatively recent but expanding viticultural approach, with increasing adoption across diverse wine-growing regions. This system relies on double pruning technique, which allows for harvest grapes during dry and cooler season, favoring greater accumulation sugars, acids, phenolic compounds. study aimed to characterize phenological stages, thermal requirements, yield, fruit quality fine wine grape cultivars ‘Sauvignon Blanc’, ‘Merlot’, ‘Tannat’, ‘Pinot Noir’, ‘Malbec’, ‘Cabernet Sauvignon’ under management subtropical climate. vineyard was established 2020 using randomized complete block design (8×5), two cycles were evaluated (2022/2023 2023/2024). Significant differences duration stages observed among cultivars, ranging from 146 172 days harvest. accumulated demand higher first cycle, mean 1,476.9 growing degree (GDD) cultivars. results demonstrate potential Vitis vinifera L. managed high-quality conditions, supporting viability viticulture state São Paulo.