terclim by ICS banner
IVES 9 IVES Conference Series 9 Application of nitrogen forms such as nitrate, urea, and amino acids effects on leaf and berry physiology and wine quality

Application of nitrogen forms such as nitrate, urea, and amino acids effects on leaf and berry physiology and wine quality

Abstract

Nitrogen (N) uptake by grapevine roots in forms like nitrate, ammonium, urea, or amino acids influences vegetative and generative growth, impacting grape quality and wine sensory profile. The study examined nitrogen’s influence on phenolic compounds in leaves, berries, and wine across different scales — hydroponics, soil culture, and vineyard trials. Nitrogen forms altered metabolite patterns in leaves and wine significantly, affecting aroma and flavor. Key nitrogen assimilation enzymes (NR, NiR, GS) in grapevine rootstocks responded to nitrogen forms and timing. Hydroponically grown rootstocks fertilized with various forms showed differences in enzyme expression and activity, suggesting rootstocks can assimilate amino acid glutamine (Gln). Nitrogen forms also regulate NR and NiR, influencing nitrate assimilation. The study highlights the importance of nitrogen form on leaf physiology, berry composition, and wine quality, with implications for organic fertilization and vineyard management.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Christian Zörb*

Universität Hohenheim, Institut für Kulturpflanzenwissenschaften, Qualität pflanzlicher Erzeugnisse und Weinbau (340e), Schloss Westflügel, 70593 Stuttgart Hohenheim, Germany

Contact the author*

Keywords

nitrogen application, amino acids, quality, phenolics, wine quality

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Influence of precipitation on the phenolic and isotopic composition of Vitis Vinifera red wines

This study investigates how precipitation from November to February during each harvest year, influence the phenolic and isotopic profiles of red wines, particularly focusing on trans-resveratrol, total phenolic compounds, and carbon and oxygen isotopes (¹³C/¹²C and ¹⁸O/¹⁶O).

Impact of winemaking practises on the formation of pinking

The pinking is a phenomenon that can occur in white wine produced with white grape causing the color change from yellow to red-salmon hue. Even if its appearance is highly variable and dependent to the vintage, the wines from certain grape varieties, such as Sauvignon blanc, Chardonnay, Riesling and Trebbiano di Lugana, have been identified to be more susceptible to the pinking.

Wine shaking during transportation: influence on the analytical and sensory parameters of wine

According to OIV reports, annual world wine consumption fluctuated around 240-245 mln hL over the past decade. The general market globalization has led to the situation when almost half of the consumed wine is exported to other countries. Of this volume, more than 60 mln hL are bottled still and sparkling wines.

Soil electrical resistivity measurement: from terroir characterization to within-field crop inputs management

Soil Electrical Resistivity measurement is a zoning tool used by soil scientists and agronomists in viticulture. Indeed, the measure enables to optimize pedological surveys

French regulations related to vineyard spraying and examples of devices developed in France and around the world to limit the risks of point-source pollution

Managing pests in vineyards presents a major challenge for winegrowers, who are seeking effective solutions to control diseases and pests.