Uso da poda seca e da poda verde para obtenção de duas safras por ciclo vegetativo em três cultivares de videira

Abstract

, sendo a poda de inverno feita em cordão esporonado, e a poda verde, mediante desponte do sarmento a partir da quarta gema acima do último cacho. Avaliaram-se a produção por planta, a massa dos cachos, os sólidos solúveis totais (SST), a acidez total titulável (ATT), a relação SST/ATT, o potencial da água na folha e a relação folha:fruto, de ambas as safras. Os resultados demonstraram que a execução de uma poda seca associada a uma poda verde permitiu obter duas safras de uva por ciclo vegetativo em 'Niagara Branca', Niagara Rosada e 'Concord', sendo mais efi ciente quando a poda seca foi realizada em agosto, associada à poda verde em novembro. A 'Niagara Branca' apresentou maior potencial para produzir uma segunda colheita, comparativamente à 'Niagara Rosada' e 'Concord'. Os frutos oriundos da poda verde apresentaram menor valor de SST, maior ATT e menor relação SST/ATT em relação aos obtidos na safra normal. Termos de indexação: manejo da poda, práticas culturais, fi siologia vegetal, Vitis labrusca. USE OF WINTER PRUNING AND GREEN PRUNING FOR OBTAINING TWO HARVESTS BY VEGETATIVE CICLE OF THREE VINE CULTIVARSABSTRACT -This study aimed to evaluate the effects of winter and green pruning for obtaining two harvests per vegetative cycle for Niagara Branca, Niagara Rosada and Concord grapevine cultivars conducted by cordon training. The experiment was performed at the Agronomic Experimental Station of Eldorado do Sul, Rio Grande do Sul State, Brazil, during the 2007/2008 harvest. Grapevines were submitted to the following treatments: T1 (winter pruning on 07/20/07 and green pruning on 11/15/07), T2 (winter pruning on 07/20/07 and green pruning on 12/17/07), T3 (winter pruning on 08/22/07 and green pruning on 11/15/07) and T4 (winter pruning on 08/22/07 and green pruning on 12/17/07). The winter pruning was performed by means of a short pruning, while the green pruning was performed by pruning the shoot, starting from the fourth bud above the last grape cluster. The grapevine production, cluster weight, total soluble solids (SST), total titratable acidity (ATT), SST/ATT ratio, water potential in the leaf and leaf/fruit ratio were evaluated for the two crops. Results demonstrated that a winter pruning associated to a green pruning permitted to obtain two harvests of 'Niagara Branca', 'Niagara Rosada' and 'Concord' cultivars per vegetative cycle. The treatment T3 was the most effi cient to obtain a second harvest in the same vegetative cycle. The Niagara Branca showed high potential for a second harvest when compared to the Niagara Rosada and Concord grapevines cultivars. Grapes under the green pruning had lower SST, larger ATT and smaller SST/ATT ratio compared to grapes from regular harvest.

Optimization of Vineyard Water Management: Challenges, Strategies, and Perspectives

“…These studies highlight the fact that the planning of the vineyard prior to its plantation should consider these issues for solving problems related to water availability that could appear in the future. However, other canopy management techniques can be used to modify water management when the vineyard is already established, such as green pruning [173]. The goal of green pruning is to remove excess shoots to balance the vegetative growth and the yield in the grapevine.…”

The influences of rootstock and pruning seasons on productive and physicochemical traits of ‘Niagara Rosada’ grape

“…For these authors summer pruning is an alternative to increase the supply of grapes, without affecting their quantity and quality from first harvest. Anzanello et al (2010) evaluated the effects of winter and green pruning on the Niagara Rosada, Niagara Branca and Concord varieties, they concluded that dry pruning associated with green pruning, yielded two harvests per season, but it was more efficient when dry pruning took place in August, while green pruning in November. Regarding to the grapevine performance grafted onto different rootstocks, literature has plenty of studies on vegetative growth, yield, the quality of bunches and berries (Pauletto et al, 2001a,b;Terra et al, 2003;Vanden Heuvel et al, 2004;Mota et al, 2009;Tecchio et al, 2011;Rizk-Alla et al, 2011;Jogaiah et al, 2013).…”

Produção fora de época da videira 'BRS Clara' sob cultivo protegido

“…A primeira poda ou poda de inverno é realizada no fim do repouso hibernal, nos meses de julho e início de agosto, obtendo-se a colheita de dezembro a janeiro. A segunda poda ou poda de verão é realizada após a colheita proveniente da poda de inverno, obtendo-se uma produção fora de época entre maio e junho, período este em que a oferta de uvas de mesa no Brasil por outras regiões é baixa ou inexistente (ANZANELLO et al, 2010).…”