Physic, chemical and productive characteristics of ‘Cabernet Sauvignon’ and ‘Tannat’ grapes in the north of Paraná - DOI: 10.4025/actasciagron.v29i5.738

Abstract

The aim of this research was to determine the physic-chemical and productive characteristics of ‘Cabernet Sauvignon’ and ‘Tannat’ grapes (Vitis vinifera) cultivated in the north of Paraná. The experimental area was established in a commercial vineyard owned by Intervin^® Cellar, located in Maringá, state of Paraná. The vineyard was established in July, 2000, using the ‘IAC 766 Campinas’ as the rootstock. For each variety, 20 uniform grapevines were used, cultivated in pergola system in a 4.0 x 1.5 m spacing. The maturation of the grapes was evaluated considering the evolution of the following contents of the must overtime: pH, total soluble solids (TSS), titratable acidity (TA) and the TSS/TA ratio, from around 50 days after flowering up to 7 days after harvest. Considering the total cluster per tree, cluster mass and number of trees per hectare, the production per tree and productivity of each variety were estimated. The diameter and the mass of berries were also characterized. It was verified that ‘Tannat’ showed appropriate characteristics for grape processing. The behavior of ripening of both varieties was better fitted to the cubic regression. At harvest, it was determined that the pH, TSS content, TA, TSS/TA ratio, estimates of production per tree, productivity, cluster mass, number of cluster per tree, diameter and mass of berries of the ‘Cabernet Sauvignon’ and ‘Tannat’ grapes were 3.3 and 3.2; 14.1 and 17.2°Brix; 0.76 and 0.70% of tartaric acid, 18.7 and 29.6, 9.5 and 6.1 kg; 15.9 and 10.1 t ha^-1; 0.12 and 0.16 kg; 78 and 36 clusters per tree; 12.0 and 12.9 mm, respectively.