4 research outputs found
Comportamento vegetativo e produtivo da videira e composição da uva em São Joaquim, Santa Catarina
O objetivo deste trabalho foi avaliar o comportamento vegetativo e produtivo das variedades de videira Cabernet Sauvignon, Merlot e Sauvignon Blanc, e a composição da uva em São Joaquim, Santa Catarina. Foram avaliadas plantas de um vinhedo comercial, cultivado em espaldeira, a 1.293 m de altitude, durante os ciclos fenológicos 2005/2006 e 2006/2007. As variáveis meteorológicas, a fenologia, o desenvolvimento do dossel e a composição da uva na colheita foram comparados entre os ciclos. As temperaturas mais amenas influenciaram o ciclo fenológico das variedades Cabernet Sauvignon, Merlot e Sauvignon Blanc, que é mais longo e tardio que nas outras regiões vitícolas do Brasil. Houve influência significativa da precipitação pluvial sobre a maturação da uva, no ciclo 2006/2007. Os índices de desenvolvimento indicam a necessidade de ajuste no manejo do dossel para um maior equilíbrio entre o crescimento vegetativo e a produção. As variedades Cabernet Sauvignon, Merlot e Sauvignon Blanc apresentam elevada qualidade da uva no momento da colheita, sendo adequadas ao cultivo em São Joaquim, SC
Grape maturity, yield, quality, sensory properties, and consumer acceptance of fiesta and selma pete dry-on-vine raisins
Timely cane severance is the critical first step in the dry-on-vine (DOV) raisin-making process. If canes are severed too early, the berries will have insufficient soluble solids, limiting yield and grade, but if the canes are severed too late, then the grapes will not dry sufficiently. Further, grape maturity at drying may affect the sensory attributes of the raisins, and therefore consumer acceptance. Thus, production studies were conducted over three seasons to determine the relationship between grape maturity and the yield and quality of DOV raisins made from two important DOV raisin grape (Vitis vinifera L.) cultivars, Fiesta and Selma Pete. Additionally, sensory attributes, and consumer acceptance, of \u201cB and better\u201d raisins made from low or high maturity raisins of each cultivar were conducted in one year. There was a positive curvilinear relationship between berry soluble solids level and raisin grades, comparable to relationships established for tray-dried raisins. However, DOV raisins appeared to achieve higher quality grades than would be expected of tray-dried raisins, especially at soluble solids 20 Brix. Raisin yield, moisture content, and quality grades varied according to year and cane severance date but, in general, an acceptable balance of these variables was achieved by severing the canes at 19 Brix for Fiesta and 21 Brix for Selma Pete. However, consumer acceptance data suggested that most people prefer Selma Pete raisins and raisins from the most mature Fiesta grapes, all of which were made from grapes with >20 Brix at drying. It may be difficult
to consistently achieve 20 Brix and adequate drying of Fiesta, suggesting Selma Pete is the superior variety for DOV raisin production