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Configure::__loadBootstrap() - CORE/cake/libs/configure.php, line 683
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Chiudi
(Defogliazione- Ripercussioni qualitative - C)
Effetto della defogliazione eseguita in pre-fioritura sui paramteri produttivi e qualitativi di due cultivars di Vitis vinifera (Poni et al., 2009).
La sperimentazione è volta a verificare se una defogliazione eseguita prima della fioritura possa modificare la quantità di vinaccioli nell’acino, il peso della bacca, la quantità di produzione e, in ultimo le caratteristiche del mosto che ne deriva. La defogliazione eseguita su cv. Barbera e Lambrusco salamino, è consistita nell’eliminazione delle prime 6 foglie basali dei germogli principali, rispetto ad un testimone non defogliato. I risultati hanno mostrato come la defogliazione contribuisca a ridurre l’allegagione e di conseguenza la produzione ad ettaro. Inoltre le tesi defogliate presentavano una maggior rapporto foglie / grappolo (+3,4 cm2/g e 3 5,2 cm2/g rispettivamente per Barbera e lambrusco salamino). In entrambe le cultivars, la buccia e la quantità di semi sono risultate strettamente correlate alla dimensione dell’acino. Infine la tabella mostra come la defogliazione precoce, possa migliorare sensibilmente i parametri qualitativi del mosto.
