Nitrogen and Sulphur Foliar Fertilisation

Bruwer, Freda Aléta; Toit, W. J. Du; Buica, Astrid

doi:10.21548/40-2-3281

Cited by 9 publications

(8 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with artificial nitrogen sources, (i) FNAV may increase the nitrogen content and type in grape 63,65,66 instead of a single nitrogen source such as DAP as salt; 39 because the content and type of nitrogen in must are very important for yeast growth and metabolism, FNAV may be more suitable for maintaining fermentation vigor in nitrogen-deficient must; and (ii) FNAV may help modify the aromatic compositions derived from amino acid metabolism, by enhancing amino acid compositions in grape. 63,65,66,95 However, adding nitrogen salts in must does not improve the aroma, due to the addition of non-amino acid nitrogen sources. Therefore, FNAV may be a more useful way to supply nitrogen in must and to replace artificial nitrogen.…”

Section: Reasons For Selecting the Veraison Period For Foliar Fertilimentioning

confidence: 99%

Using foliar nitrogen application during veraison to improve the flavor components of grape and wine

et al. 2020

View full text Add to dashboard Cite

Nitrogen is involved in the winemaking process from grapevine growth to wine fermentation, and its precise utilization in vineyards can regulate grape and wine quality. Foliar nitrogen application during veraison (FNAV) could prevent nitrogen deficiency in grape and must in nitrogen‐deficient vineyards. Moreover, FNAV also could improve certain flavor components of grape and wine, but little attention has been paid to FNAV. Therefore, this paper mainly reviews the difficulties encountered in current applications of nitrogen in vineyards and wineries, and the advantages of FNAV over the addition of nitrogen in soil and wineries. And it discusses that FNAV can increase yeast‐assimilable nitrogen and phenolics, and scarcely affect volatile components of grape (must and wine), and points out the existing problems including the core issue and then puts forward future research directions. This information may indicate future directions for research, and provide a reference for viticulturists and winemakers on the precise application of nitrogen on grapevine and must to further improve grape and wine quality in nitrogen‐deficient vineyards. © 2020 Society of Chemical Industry

show abstract

Section: Reasons For Selecting the Veraison Period For Foliar Fertilimentioning

confidence: 99%

Using foliar nitrogen application during veraison to improve the flavor components of grape and wine

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Vine nutrition is an important factor for wine quality and plays an essential role in the winery [127]; a nutritional deficiency of the vine manifests itself for multiple reasons and negatively affects the aromatic profile of a wine, for example, due to slow or blocked fermentation [128]. Foliar treatments are applied mostly in the case when small fertilization corrections are necessary and they are preferred to soil applications when the topsoil is very dry or with decreased root activity [129]. A grapevine's nutrition can be affected by various factors, as reported in Figure 1 [130][131][132][133][134][135].…”

Section: Foliar or Soil Fertilizationmentioning

confidence: 99%

“…A grapevine's nutrition can be affected by various factors, as reported in Figure 1. In particular, grapevine nitrogen status can affect vine vigor and grapes; nitrogen (N) fertilization can increase the berry's N content [129,136]. There is growing interest in In particular, grapevine nitrogen status can affect vine vigor and grapes; nitrogen (N) fertilization can increase the berry's N content [129,136].…”

Section: Foliar or Soil Fertilizationmentioning

confidence: 99%

“…In particular, grapevine nitrogen status can affect vine vigor and grapes; nitrogen (N) fertilization can increase the berry's N content [129,136]. There is growing interest in In particular, grapevine nitrogen status can affect vine vigor and grapes; nitrogen (N) fertilization can increase the berry's N content [129,136]. There is growing interest in the analysis of individual amino acids in must owing to their important role such as precursors to aromas released during fermentation [137].…”

Section: Foliar or Soil Fertilizationmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review

et al. 2021

View full text Add to dashboard Cite

Climate change with rising temperatures and the unpredictability of rainy events during ripening leads to tough challenges for the winemakers in preserving the quality of white grape varieties. Grape quality is a complex concept that mainly refers to berry chemical composition, including secondary metabolites such as aroma compounds that in white berries play a key role in the identity of the wine. Terpenes, thiols, C13-norisoprenoids, methoxypyrazines, and nonterpenic alcohols are the most important aroma compounds in white grapes and several of them can be found as free volatiles or bound as glycoconjugate molecules. Agronomic practices in vineyards, such as biostimulant application, irrigation, defoliation, training systems, foliar fertilization, and bunch thinning, can have a positive effect on their concentration. This review aims to highlight the aromatic characteristics of the most utilized white grape cultivars and focus on agronomic techniques in the vineyard to enhance, implement, and intensify their aromatic characteristics. The purpose of this review paper is therefore to investigate the state of the art regarding the exaltation of aroma in white grapes in the scientific literature through sustainable agronomic techniques, but further future investigations are considered necessary given the uncertainty concerning some mechanisms of biosynthesis and their correlation with such agronomic practices.

show abstract

“…These results could be related to the positive effects that these treatments had in improving the YAN concentration of the musts. In this way, production of higher alcohols and esters is mainly related to amino acid metabolism in the yeast cell and their concentration depends on YAN (Bell and Henschke 2005, Bruwer et al 2019). Thus, the concentration of higher alcohols shows an initial increase at a low concentration of YAN and tends to decrease after a YAN concentration higher than 200–300 mg N/L (Ugliano et al 2007).…”

Section: Effect Of Foliar Application Of Urea On Grape Compositionmentioning

confidence: 99%

Application of foliar urea to grapevines: productivity and flavour components of grapes

Gutiérrez‐Gamboa

Diez-Zamudio

Stefanello

et al. 2021

Aust J Grape and Wine Res

View full text Add to dashboard Cite

Urea is a non‐electrically charged nitrogen (N) molecule suitable for foliar application, since it easily penetrates the epicuticular waxes and the cutin layer of leaves. Several field trials have been conducted to understand how foliar application of urea to grapevines may affect yield and grape composition compared to other N fertilisers. The effectiveness of foliar application of urea to change the flavour components of grapes depends on the N status of the grapevines related to crop load and the timing of the foliar application, which could also play a key role in basal bud fertility and stored N reserves. The application of foliar urea to grapevines may affect the concentration of N, volatile compounds, and phenolic substances in grapes without influencing yield and its components in the short term. During alcoholic fermentation, grape N concentration favours the production of non‐volatile and volatile compounds that affect wine attributes, aroma, bitterness, and astringency. Other N‐compounds such as biogenic amines may also be formed in wines which can be toxic to the consumer. Gene expression related to grapevine N metabolism and the identification of putative chemical markers in red and white wines after foliar N application deserves further investigation. This review aimed to evaluate the factors involved in N uptake by leaves after foliar urea fertilisation, to summarise effects on grapevine yield components and grape composition and to provide also research options for future studies in this area.

show abstract

Nitrogen and Sulphur Foliar Fertilisation

Cited by 9 publications

References 103 publications

Using foliar nitrogen application during veraison to improve the flavor components of grape and wine

Using foliar nitrogen application during veraison to improve the flavor components of grape and wine

Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review

Application of foliar urea to grapevines: productivity and flavour components of grapes

Contact Info

Product

Resources

About