Abstract
The reduction of the environmental impact of agricultural activity has stimulated the evaluation of new cultivars tolerant/resistant to fungal diseases within the context of Trentino viticulture. In an alluvial soil, 15 varieties of resistant vines were planted:Aromera,Baron,Bronner,Cabernet Cantor,Cabernet Cortis,Cabernet Carbon,Cabino,Helios,Johanniter,Monarch,Muscaris,Prior,Regent,Solaris, andSouvignier gris. Since 2015 they have been evaluated for nutritional aspects, vegetative-productive balance, quantitative-qualitative parameters of musts and health status. Some cultivars (Cabernet Cortis, Cabino, Helios, and Prior) had an insufficient vegetative development, whilst other varieties presented a balanced or excessive behaviour. Regarding magnesium (Mg), some of these cultivars presented deficiencies, often confirmed by visual analysis, but not always highlighted by leaf analyses (Cabernet Cantor,Cabernet Cortis, andMonarch). For such varieties, Mg supply is recommended. Nonetheless, with the aim of new plantings, the choice of more suitable rootstock combinations should be done.Cabinoalways showed very highly susceptibility toPlasmopara viticolaattack, with an ineffective resistance.
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