RT Journal Article
SR Electronic
T1 Vine Age Affects Vine Performance, Grape and Wine Chemical and Sensory Composition of cv. Zinfandel from California
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP ajev.2022.22014
DO 10.5344/ajev.2022.22014
A1 Vegas L. Riffle
A1 Jocelyn Alvarez Arredondo
A1 Isabelle LoMonaco
A1 Chip Appel
A1 Anibal A. Catania
A1 Jean Catherine Dodson Peterson
A1 L. Federico Casassa
YR 2022
UL http://www.ajevonline.org/content/early/2022/07/11/ajev.2022.22014.abstract
AB The wine industry regards old vines as nonpareil because of vine's decreased capacity to set and mature fruit, resulting in superior wine quality. Here we report the viticultural, chemical, and sensory effects of vine age in Vitis vinifera L. cv. Zinfandel. Three treatments, Young vines (5 to 12 years old), Control (representative proportion of young to old vines in the block), and Old vines (40 to 60 years old) were established at an interplanted, dry farmed Zinfandel vineyard block under consistent, industry standard, management practices in California over two consecutive vintages. Old vines produced, on average, 3.7 kg more fruit and more clusters per vine than Young vines (13.37 tons/ha and 6.52 tons/ha, respectively). While no differences in root distribution or architecture were found, Old vines displayed greater rooting depths (1.52 to 1.73 + m) than Young vines (1.40 to 1.52 + m). Wines from Young vines had lower pH, titratable acidity and tannins than wines from Old vines, which in turn displayed a wider array and intensity of more complex aromas relative to Young vine wines. Overall, it is concluded that there is a potential for greater yield, rooting depths and wine quality when extending the longevity of Zinfandel vineyards. These findings support maintaining old vine vineyards to increase tonnage without sacrificing wine quality.