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IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2013 9 GiESCO 2013 – Session 8: General viticulture 9 Viticultural aspects and their influence on the assimilable nitrogen content in grapes

Viticultural aspects and their influence on the assimilable nitrogen content in grapes

Abstract

There are several aspects influencing the quality of grapes. This paper deals with the effect of variety, rootstock and vintage on levels of yeast assimilable nitrogen in grape musts. The experimental material originated in the Czech Republic. There were four varieties (‘Rhein Riesling’, ‘Erilon’, ‘Malverina’ and ‘Hibernal’) grafted on two different rootstocks (‘Kober 5BB’ and ‘SO4’). All the varieties except ‘Rhein Riesling’ are interspecific hybrids. The experiment took place in the vintages 2011 and 2012. The YAN was determined by the formaldehyde titration.

The obtained results showed that all musts contained high concentrations of yeast assimilable nitrogen in both vintages (219.54 mg/L and 197.97 mg/L, respectively). A comparison of both rootstocks indicated that average contents of YAN were higher in the variants with the rootstock ‘Kober 5BB’, but there were no significant differences. In contrast to different rootstocks, there were great differences between all varieties: grape musts made of the variety ‘Erilon’ contained the highest levels of YAN.

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Publication date: 07/09/2026

Issue: GiESCO 2013

Type: Poster

Authors

Mojmír Baroň1,*, Barbora Nádeníčková1

1 Mendel University in Brno, Faculty of Horticulture, Department of Viticulture and Enology, Valticka 337, Lednice na Morave, CZ-69144, Czech Republic

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Keywords

yeast assimilable nitrogen, interspecific varieties, rootstocks

Tags

GiESCO | GiESCO 2013 | IVES Conference Series

Citation

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