Fenologia e efeito da desfolha parcial na produção extemporânea de efeito da desfolha parcial na produção extemporânea da videira, cultivar Cabernet Franc (Vitis vinifera L.), na região de São Roque - SP

• Autor(a) principal: Lenk, Fábio Laner [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: https://hdl.handle.net/11449/139418; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-05-2016/000865169.pdf
• topic: Uva - Cultivo; Videira - Fisiologia; Vinho e vinificação; Fenologia vegetal; Grapes

The wine production in Brazil is a recent economic activity compared to traditional producers worldwide. This research aimed to characterize the vine „Cabernet Franc 'submitted for extemporaneous pruning the conditions of southeastern Brazil, and to evaluate the effects of partial defoliation of the canopy physiology, production and fruit quality. The studies were conducted under field conditions in commercial vineyard in the municipality of São Roque - SP, Brazil. The first experiment was to characterize the phenology of cultivating and number of leaf pulverization since its planting in December 2011 to May 2015, when submitted to the management extemporaneous production. The second experiment evaluated the effect of partial defoliation on yield and quality of grapes. The experimental design was a randomized block design, with three treatments and seven repetitions (blocks) where each plot consisted of four plants. The treatments consisted of different levels of defoliation: T1 - control without defoliation; T2 - defoliation the base of the branch by 1st bunch; T3 - defoliation the base of the branch to 2nd bunch. Defoliation was performed from the beginning of the maturation and change of berries's color. During the period between the beginning of maturation and harvesting, weekly samples of 50 berries were made for each treatment to evaluate: mass berries; soluble solids; pH and titratable acidity. Regarding the physiological parameters were measured leaf water potential and gas exchange about the different treatments. The grape variety Carbenet Franc (Vitis viníferas L.) achieved satisfactory indexes of maturation with double pruning extemporaneous. November, December and January are not suitable months to accomplish double pruning extemporaneous. The elevated rainfall during the vine herbaceous growth ...