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|Title: ||Influência do sistema de condução nos prejuizos resultantes da traça-da-uva e da podridão-cinzenta nas castas Syrah e Trincadeira|
|Authors: ||Santos, Maria Fernanda Castiço dos|
|Keywords: ||vitis vinifera|
vertical shoot positioned
|Issue Date: ||2007|
|Abstract: ||A study was conducted to assess the influence of different training systems in the
resulting damages caused by the grape-berry-moth (Lobesia botrana Denis & Schiff.)
and grey-mold (Botrytis cinerea Pers.), as a way to determine the effect of canopy
structure in the behaviour of the major vineyard enemies.
Field experiments were performed during the 2002 growing season, in an
experimental vineyard at Instituto Superior de Agronomia, in Vitis vinifera L.
varieties: ‘Syrah’ and ‘Trincadeira’, using three different training systems – Lys, Lyre
and Vertical Shoot Positioned.
Canopy structure was determined by leaf area index, canopy dimension and density
assessed at compact bunches. Damage intensity was evaluated by weekly sampling
of leafs and bunches of grapes. Incidence and severity were determined for diseases,
whereas for grape-berry-moth was determined its life cycle and percentage of
attacked bunches of grapes.
In the mentioned growing season three generations of grape-berry-moth were
observed, with preference by ‘Syrah’ grapes. This variety had an higher incidence
and severity of grey-mold on grapes.
Lys training system showed an higher leaf area and the highest attack by Lobesia
botrana. The training system Lyre in ‘Trincadeira’ and Vertical Shoot Positioned in
‘Syrah’ presented a lower severity of grey-mold.|
|Description: ||Mestrado em Viticultura e Enologia - Instituto Superior de Agronomia|
|Appears in Collections:||BISA - Dissertações de Mestrado / Master Thesis|
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