A three-year field study on the impact of different nitrogen fertilisation strategies on yeast-assimilable nitrogen (YAN)
Abstract
Efficient nitrogen fertilisation in viticulture has the dual challenge of enhancing grape quality while reducing the environmental impacts associated with nitrogen use. This three-year field study evaluated different nitrogen fertilisation forms and application methods for the perennial fruit crops Vitis vinifera L. cv. Riesling, including foliar, topsoil, and subsoil applications at a rate of 50 kg N ha–1. The study focused on the impact of nitrogen fertilisation on nitrogen content, nitrogen use efficiency and amino acid concentrations in grape berries and must.
References
- Göttmann, J., Kunz, R., Dries, L., Löhnertz, O., & Geilfus, C.-M. (2026). Evaluation of the impact of different nitrogen fertilisation forms and techniques on yeast-assimilable nitrogen (YAN) in Vitis vinifera L. cv. Riesling: A three-year field study. OENO One, 60(1). https://doi.org/10.20870/oeno-one.2026.60.1.9449
- Geilfus, C.-M. A three-year field study on the impact of different nitrogen fertilisation strategies on yeast-assimilable nitrogen (YAN). Recording of the presentation delivered at Enoforum Spain 2026, Zaragoza, 20–21 May 2026. Available soon on Infowine Premium: https://vinidea.it/es/brand/infowine/
DOI:
Publication date: 28/08/2026
Issue: Enoforum 2026
Type: Oral
Authors
1 Hochschule Geisenheim University, Department of Soil Science and Plant Nutrition, Germany
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Keywords
nitrogen fertilisation, nitrogen use efficiency, Vitis vinifera, amino acids, grape quality