Concentrazione di potassio nelle bacche e valori di pH e zuccheri nel mosto della cv Cabernet Sauvignon innestata su diversi portinnesti nel Sud del Brasile.
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In field conditions two experiments were carried out in 2000/2001 and 2001/2002, to evaluate potassium (K) content in berries, and pH and total soluble solid values in the must. The experiment 1 was carried on a Udorthent soil and the experiment 2 on a Haplumbrept soil, both at Southern Brazil, Bento Gonçalves city. The Cabernet Sauvignon grapevine was grafted on different rootstocks (Rupestris Du Lot, R. 99, R. 110, SO4, 420 A, 1103, 101-14 and 3309). At full ripening, berries were collected and potassium concentration (2000/2001 and 2001/2002 seasons), pH and total soluble solids (2001/2002 season) were determined. Rootstock didn’t affect potassium content of berries, and pH and total soluble solid values in the must.
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Fertilização, Viticultura, Uva, Nutrição vegetal, Potássio