Postveraison Shoot Trimming Reduces Cluster Compactness without Compromising Fruit Quality Attributes in Organically Grown Sangiovese Grapevines
Author
dc.contributor.author
Bondada, Bhaskar
Author
dc.contributor.author
Covarrubias Peña, José
Author
dc.contributor.author
Tessarin, Paola
Author
dc.contributor.author
Conceiçao Boliani, Aparecida
Author
dc.contributor.author
Marodin, Gilmar
Author
dc.contributor.author
Rombolà, Adamo Domenico
Admission date
dc.date.accessioned
2016-12-12T16:16:54Z
Available date
dc.date.available
2016-12-12T16:16:54Z
Publication date
dc.date.issued
2016-04
Cita de ítem
dc.identifier.citation
Am. J. Enol. Vitic. 67:2 (2016)
es_ES
Identifier
dc.identifier.issn
1943-7749
Identifier
dc.identifier.other
10.5344/ajev.2016.15058
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/141775
Abstract
dc.description.abstract
Vine performance following preveraison shoot trimming is well documented, but the consequences of this treatment later in the season are poorly understood. Here, a four-year study was conducted in a mature vineyard of Sangiovese (clone 12T) grafted onto Kober 5BB rootstock at a spacing of 1 m x 2.8 m (intra-and interrow) to analyze the influence of postveraison shoot trimming on vine growth characteristics, cluster architecture (cluster compactness), and yield from a physiological viewpoint. The treatments consisted of shoot trimming during postveraison in a randomized block design with eight replications (six vines each). Three treatments were imposed when soluble solids reached 15 Brix in August (40 to 45 days before expected harvest): light trimming (14 nodes), severe trimming (10 nodes), and an untrimmed control. Following the treatments, vine growth characteristics, cluster morphology, and fruit quality attributes were measured. Postveraison shoot trimming (especially severe trimming) reduced cluster weight, cluster compactness, productivity, and total yield. Effects on fruit quality included lowering of Brix and pH, with minor effects on titratable acidity, yeast assimilable nitrogen, the anthocyanin profile, and total anthocyanins. These results demonstrated that postveraison shoot trimming can be a valuable production practice by reducing cluster compactness without compromising overall fruit quality in Sangiovese.