Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/8583
Título: Effect of canopy management practices - hedging vs curling shoot tips - on growth, yield and fruit composition of Merlot grapevines
Autor: Pfister, Lucas Federico
Orientador: Lopes, Carlos Manuel Antunes
Leeuwen, Kees Cornelis van
Palavras-chave: grapevine
curling
grape composition
hedging
leaf area
Merlot
Data de Defesa: 2011
Editora: ISA
Citação: Pfister, L.F. - Effect of canopy management practices - hedging vs curling shoot tips - on growth, yield and fruit composition of Merlot grapevines. Lisboa: ISA, 2011, 74 p.
Resumo: A study to compare the effects of hedging and curling the shoot tips (rolling) on the last wire of the trellising system was carried out in Saint Emilion (France) on Merlot grapevines in 2011. Vines were hedged or curled when shoots were 30 – 40 cm longer than the highest wire. The effects of the two canopy management strategies on vine performance, mainly vegetative growth, disease occurrence, phenology, water status, yield components and berry composition were compared. Curled, not hedged vines presented longer main shoots, more lateral shoots and higher potassium values on the petioles. Hedged plants had a higher percentage of shaded clusters and a higher leaf layer number at the cluster zone and ¾ of the canopy. Regarding leaf area, curled plants presented a bigger main leaf area but for lateral leaf area no differences were found. Although berries on hedged plants were prone to have a higher mass, no differences for berry composition were found. Hedging seems to be an appropriated technique for the Sain Emilion region as it is less time consuming, less expensive, possible to be mechanized and it has no detriment regarding quality of berries
Descrição: Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/8583
Aparece nas colecções:BISA - Dissertações de Mestrado - Vinifera EuroMaster

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