13 research outputs found
Effect of varying node number per bearer on yield and juice composition of Cabernet Sauvignon grapevines
Comparative study of vine morphology, growth, and canopy development in cane-pruned and minimal-pruned Sultana
Use of the starwheel sprayer for applying drying emulsion to sultana grapes to be dried on the trellis
The response of the grape cultivar Crouchen (Australian syn. Clare Riesling) to various trellis and pruning treatments
Effect of rootstocks on berry weight and pH, mineral content and organic acid concentrations of grape juice of some wine varieties
J. Sci. Food Agric.
BACKGROUND Berry size is considered an important quality factor in red wine production. The objective of this work was to study the effect of vine water status on berry mass in field conditions, with a specific focus on berry tissue masses. RESULTS The s
Spatial Variability of Grapevine Bud Burst Percentage and Its Association with Soil Properties at Field Scale
Tannat grape composition responses to spatial variability of temperature in an Uruguay’s coastal wine region
International audienceSpatial variability of temperature was studied in relation to the berry basic composition and secondary compounds of the Tannat cultivar at harvest from vineyards located in Canelones and Montevideo, the most important wine region of Uruguay. Monitoring of berries and recording of temperature were performed in 10 commercial vineyards of Tannat situated in the southern coastal wine region of the country for three vintages (2012, 2013, and 2014). Results from a multivariate correlation analysis between berry composition and temperature over the three vintages showed that (1) Tannat responses to spatial variability of temperature were different over the vintages, (2) correlations between secondary metabolites and temperature were higher than those between primary metabolites, and (3) correlation values between berry composition and climate variables increased when ripening occurred under dry conditions (below average rainfall). For a particular studied vintage (2013), temperatures explained 82.5% of the spatial variability of the berry composition. Daily thermal amplitude was found to be the most important spatial mode of variability with lower values recorded at plots nearest to the sea and more exposed to La Plata River. The highest levels in secondary compounds were found in berries issued from plots situated as far as 18.3 km from La Plata River. The increasing knowledge of temperature spatial variability and its impact on grape berry composition contributes to providing possible issues to adapt grapevine to climate change