Fenologia e produção das videiras 'Alicante' e 'Syrah' em safra fora de época

Abstract

This study aimed to characterize the phenology and the production of 'Alicante' and 'Syrah' grapes (Vitis vinifera L.) produced out of season. The experimental area was located in a property belonging to the Intervin® Winery, at Maringá, PR. The vineyards were established in July, 2001 and the vines were trained in an overhead trellising system (4.0x1.5m), grafted on IAC 766 'Campinas' rootstock. The long pruning of production (eight buds) was held in late February of 2008 and 2009. The evaluations started from the pruning of production, in two years, using 20 representative vines of each variety, and the harvesting of both crops were performed on early July. The phenology of the trees was evaluated as the duration in days of the most important phases, as well it was analyzed the berries physico-chemical characteristics. The production characteristics of each variety were also estimated. It was verified that 'Alicante' showed a mean cycle of 138.0 days, must with 15.4°Brix, 1.9% of tartaric acid and productivity of 14.5t ha -1, while 'Syrah' showed a mean cycle of 132.5 days, 14.5°Brix, 2.9% of tartaric acid and productivity of 11.4t ha -1.