Importance of canopy porosity into vineyard and the relationship with the grape maturity. Digital estimation method

Fuente Lloreda, Mario de la and Linares Torres, Rubén and Baeza Trujillo, Pilar and Lissarrague Garcia-Gutierrez, Jose Ramon (2013). Importance of canopy porosity into vineyard and the relationship with the grape maturity. Digital estimation method. "Ciência e Técnica Vitivinícola", v. 28 (n. 2); pp. 633-638. ISSN 0254-0223.

Description

Title: Importance of canopy porosity into vineyard and the relationship with the grape maturity. Digital estimation method
Author/s:
  • Fuente Lloreda, Mario de la
  • Linares Torres, Rubén
  • Baeza Trujillo, Pilar
  • Lissarrague Garcia-Gutierrez, Jose Ramon
Item Type: Article
Título de Revista/Publicación: Ciência e Técnica Vitivinícola
Date: 2013
ISSN: 0254-0223
Volume: 28
Subjects:
Faculty: E.U.I.T. Agrícolas (UPM)
Department: Producción Vegetal: Fitotecnia [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In warm and dry climates, the use of porous systems should be required in order to allow a better leaf distribution inside the plant, causing more space in the clusters area and enhancing determined physiological processes so in the leaf (photosynthesis, v entilation, transpiration) as in berry (growth and maturation). Plant geometry indexes, yield and must composition have been studied in three different systems: sprawl with 12 shoots/m (S1); sprawl system with 18 shoots/m (S2) and vertical positioned syste m or VSP with 12 shoots/m (VSP1). Total leaf area increases as the crop load does, whoever surface area depends on to two factors: crop load and the training system (VSP vs. sprawl), which can provide differences in leaf exposure efficiencies. The main objective of this study was to validate digital photography measurements used to compare porosity differences among treatments and, as they affect plant microclimate and, therefore, yield and berry quality. Also, all previous studied indexes (LAI, SA, SFEr) tended to overestimate the relationship between exposed leaf surface and porosity of each treatment, but the use of digital method proved to be an effective tool in order to assess canopy porosity. Results showed that not positioned and free systems (sprawl) scored between 25- 50% more porosity in the clusters area than the fixed vertical system (VSP), which resulted in a better plant microclimate for test conditions, mainly by improving the exposure of internal clusters and internal canopy ventilation. On the other hand, higher crop load treatment (S2) showed a real increase in yield (16%) without any relevant change into must composition, even improving total anthocyanin content into berry during ripening

More information

Item ID: 26033
DC Identifier: http://oa.upm.es/26033/
OAI Identifier: oai:oa.upm.es:26033
Deposited by: Memoria Investigacion
Deposited on: 17 Jun 2014 09:18
Last Modified: 25 May 2015 13:44
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