TY - JOUR T1 - Role of Canopy Management in Controlling High pH in Tannat Grapes and Wines JF - American Journal of Enology and Viticulture JO - Am. J. Enol. Vitic. SP - 554 LP - 558 DO - 10.5344/ajev.2012.11107 VL - 63 IS - 4 AU - Andrés Coniberti AU - Virginia Ferrari AU - Laura Fariña AU - Francisco Carrau AU - Eduardo Dellacassa AU - Eduardo Boido AU - Edgardo Disegna Y1 - 2012/12/01 UR - http://www.ajevonline.org/content/63/4/554.abstract N2 - Elevated wine pH is one of the main problems affecting the quality of Vitis vinifera L. Tannat wines in Uruguay. High soil fertility, promoting vigorous vines, and high potassium availability result in high pH grapes and wine. The main objective of this work was to determine the effects of partial leaf and lateral shoot removal practices on the reduction of juice and wine pH over three growing seasons. Partial defoliation in shaded canopies significantly reduced grape potassium accumulation, malic to tartaric acid ratio, and wine pH without negatively affecting other quality parameters of soluble solids, organic acids, anthocyanins, and phenolics. ER -