RT Journal Article
SR Electronic
T1 Mechanical Pruning and Soil Organic Amending in Two Terroirs. Effects on Wine Chemical Composition and Sensory Profile
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP ajev.2021.21019
DO 10.5344/ajev.2021.21019
A1 Manuel Botelho
A1 Henrique Ribeiro
A1 Amândio Cruz
A1 Daniel F. Duarte
A1 Diana L. Faria
A1 Kaushal S. Khairnar
A1 Rafaela Pardal
A1 Marta Susini
A1 Carlos Correia
A1 Sofia Catarino
A1 Jorge Cadima
A1 Rogério de Castro
A1 Jorge M. Ricardo-da-Silva
YR 2021
UL http://www.ajevonline.org/content/early/2021/11/16/ajev.2021.21019.abstract
AB The knowledge about the interaction between mechanical pruning and soil organic amending is still scarce. This study aimed to examine the effects of the interaction between these two practices on wine quality. Syrah grapes from two trial fields in Portugal subjected to two different pruning systems (mechanical pruning – MEC; hand spur pruning – MAN) and five different organic amendments treatments (control – Ctrl; biochar – Bioc; municipal solid waste compost – MSWC; cattle manure – Manure; sewage sludge – Sludge) were harvested and vinified for four years. Mechanical pruning significantly reduced wine alcoholic strength, pH and total anthocyanins. Mechanical pruning and organic amendments, tendentially reduced wine total phenols and tannin power, known as an estimation of the astringency potential of the wines. Tasters found low but significant differences in global appreciation with pruning system. Sludge tended to reduce wines global appreciation more than MSWC and Manure, while Bioc had no effect on tasters’ preference, when compared to Ctrl. There was strong relation between yield and tasters’ preference only above 6 and 8 kg/vine depending on the terroir. Mechanical pruning tendentially has significant effects on wine quality when yield raises above a certain level. Thus, with this pruning system, the choice of the organic amendment and its amount, must be done considering the destiny of the produced grapes. Impacts of the interaction of mechanical pruning with soil organic amending on wine quality are a novelty, to the best of our knowledge.