Na região do submédio do São Francisco, a uva-'Itália' destaca-se com 63,2% da área total plantada. Atualmente, é a principal variedade para exportação. O objetivo principal deste trabalho foi avaliar o efeito das doses do CPPU (forchlorfenuron) e GA3, no aumento do tamanho da baga, que foram aplicadas por meio de pulverização dirigida sobre os cachos durante a fase de pegamento dos frutos, quando as bagas haviam atingido, aproximadamente, 8 mm de diâmetro. Este experimento foi conduzido na Fazenda Cooperyama, no município de Juazeiro-BA. O delineamento experimental foi o inteiramente casualizado, com oito tratamentos e três repetições, avaliando-se 15 cachos por tratamento com as seguintes doses: 1- Testemunha absoluta; 2- GA3 20 mg/l;3- GA3 20 mg/l+ CPPU 3 mg/l; 4- GA3 20 mg/l + CPPU 5 mg/l; 5- GA3 20 mg/l + CPPU 10 mg/l; 6- CPPU 3 mg/l; 7- CPPU 5 mg/l; 8- CPPU 10 mg/l.O melhor resultado obtido no crescimento da baga deu-se com a aplicação do CPPU 10 mg/l. Este tratamento diferiu significativamente da testemunha e da aplicação convencional com GA3 20 mg/l, aumentando 8% e 4,6% o comprimento da baga, 13,6% e 7,3% sua largura, e o peso de baga em 32% e 16,3%, respectivamente. Nos tratamentos com CPPU aplicado isoladamente e/ou associado com GA3, a colheita foi retardada em oito dias. Não se verificou diferença significativa para os teores de sólidos solúveis; no entanto, foi constatado que a acidez titulável obteve valores mais elevados na testemunha e no tratamento com GA3, aplicando 20 mg/l. Com relação ao peso do engaço, não foi verificada diferença estatística entre os tratamentos.
respectively, distributed in 4 plots, considering five plants per replicate. Our results show that pruning seasons significantly affected sprouting percentage. However, the difference in bud load influenced this variable, with higher values in the pruning at 14 buds in both seasons. According to the results, the selection of pruning system according to bud load and to genetic features of the cultivar, and their interaction with the environment, produced higher yields in pruning with 10 buds, without negatively affecting grape quality.
With the growing expansion of viticulture, the northeastern region in particular, the Submédio Vale do São Francisco, stands out in the cultivation of grapes. With the introduction of new cultivars in this region, there is a need to improve pruning management for the adaptation of these varieties. The objective of this work was to evaluate the influence of different bud loads on the management of the canopy for the post harvest quality of the fruits of cv. Sugrathirteen (Midnight Beauty ® ). The research was carried out in two years (2014 and 2015), using the DBC design in a factorial scheme, being two seasons and five treatments (6, 8, 10, 12 and 14 buds) distributed in four blocks, considering 5 plants by repetition. It can be observed that, in relation to the chemical characteristics of the fruit, the time of pruning significantly affected the content of soluble solids and total acidity. There was no influence of the yolk load on the soluble solids content, however, in the two years, they reached levels above 15 0Brix, considered adequate for this cultivar. It was also concluded that the choice of the pruning system as a function of the yolk load and the genetic characteristics of the cultivar, provided higher yields in pruning with 10 buds, without negatively affecting the quality of the grapes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.