The aim of this project was to analyze the effect of deficit irrigation on the quality of grapes and wines in two different environments in Piedmont (North Western Italy). The observations were carried out for two seasons (2005-2006) on cv. Barbera. The effects of different water amounts (10 %, 20 % and 40 % of the evapotranspiration of the previous week) delivered by drip irrigation were tested. A non-irrigated control completed the experimental design. Midday stem water potential, grape quality parameters at harvest, chemical, physical and sensory parameters of micro-vinificated wines were assessed. In Carpeneto, water stress was stronger in 2006 than in 2005. In 2005, irrigation improved grape quality. In 2006, instead, the differences between treatments were not evident either in the grapes or in the wines. In Cocconato the stress conditions were very severe in both years. In 2005, the differences were more evident than in 2006 and the tasting panel preferred the wines produced in absence of water supply.
EFFECT OF DEFICIT IRRIGATION ON BARBERA WINES IN PIEDMONT
GUIDONI, Silvia;LOVISOLO, Claudio;SCHUBERT, Andrea
2011-01-01
Abstract
The aim of this project was to analyze the effect of deficit irrigation on the quality of grapes and wines in two different environments in Piedmont (North Western Italy). The observations were carried out for two seasons (2005-2006) on cv. Barbera. The effects of different water amounts (10 %, 20 % and 40 % of the evapotranspiration of the previous week) delivered by drip irrigation were tested. A non-irrigated control completed the experimental design. Midday stem water potential, grape quality parameters at harvest, chemical, physical and sensory parameters of micro-vinificated wines were assessed. In Carpeneto, water stress was stronger in 2006 than in 2005. In 2005, irrigation improved grape quality. In 2006, instead, the differences between treatments were not evident either in the grapes or in the wines. In Cocconato the stress conditions were very severe in both years. In 2005, the differences were more evident than in 2006 and the tasting panel preferred the wines produced in absence of water supply.
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