Terroir 2010 banner
IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2010 9 Geology and Soil: effects on wine quality (T2010) 9 Evaluation of two transmittance meters in estimating chlorophyll and nitrogen concentrations in grapevine cultivars

Evaluation of two transmittance meters in estimating chlorophyll and nitrogen concentrations in grapevine cultivars

Abstract

Two transmittance-based chlorophyll meters (SPAD-502 and CCM-200) were evaluated in estimating chlorophyll (Chl) and nitrogen (N) levels in grapevine leaves. The study was conducted in a fertilization experiment [0 (N0), 60 (N1) and 120 (N2) kg N/ha] during the summer 2009, in two commercial vineyards located in Northern Greece and planted with cvs Cabernet-Sauvignon and Xinomavro (Vitis vinifera L.). When data were pooled over cultivars and samplings, leaves of N2 vines had the highest N and Chl content, as well as SPAD and CCM readings, followed by the respective values of N1. However, neither of the devices could detect the seasonal decline in leaf N and Chl content. Significant relationships between extracted Chl and measured leaf N were found in both cultivars. A strong linear function related SPAD and CCM readings in both cultivars. Total Chl and N were strongly correlated with SPAD and CCM readings in Cabernet Sauvignon (p<0.001) while relationships were poor for SPAD and not significant for CCM in Xinomavro. The results suggest that non-destructive chlorophyll estimations by transmittance-based meters are not applicable in all situations without specific estimations by transmittance-based meters are not applicable in all situations without specific calibrations necessary to improve their utility and accuracy over grapevine cultivars.

Download the PDF

DOI:

Publication date: December 3, 2021

Issue: Terroir 2010

Type: Article

Authors

D. Taskos (1), K. Karakioulakis (2), N. Theodorou (2), J.T. Tsialtas (3), E. Zioziou (2), N. Nikolaou(2), S. Koundouras (2)

(1) Boutari S.A., Goumenissa Winery, 613 00 Goumenissa, Greece
(2) Laboratory of Viticulture, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
(3) NAGREF, Cotton and Industrial Plants Institute, 574 00 Sindos, Greece

Contact the author

Keywords

SPAD-502, CCM-200, chlorophyll, nitrogen, grapevine, N fertilization

Tags

IVES Conference Series | Terroir 2010

Citation

Related articles…

The valorization of wine lees as a source of mannoproteins for food and wine applications

AIM. Wine yeast lees constitute a winemaking by-product that, unlike grape skins and seeds, are not sufficiently exploited to add value to the winemaking sector, as their treatment and disposal generally represents a cost for wineries [1].

Read More

Mechanistic insights into the bioavailability of oleocanthal and oleacein from olive oil in presence of wine active peptides and amino acids

Oleocanthal (OC) and oleacein (OL) are highly bioactive secoiridoids found in olive oil at elevated concentrations, especially when it is produced from unripe olives (Olea europaea L.). Both compounds have been correlated with strong activities against serious diseases through recent clinical trials. The most important clinical trials have been performed in patients against chronic lymphocytic

Read More

Effects of water deficit on secondary metabolites in grapes and wines

In this video recording of the IVES science meeting 2021, Simone D. Castellarin (University of British Columbia, Wine Research Center, Wine Research Centre, Vancouver, Canada) speaks about the effects of water deficit on secondary metabolites in grapes and wines. This presentation is based on an original article accessible for free on OENO One.

Read More

EFFECTS OF LEAF REMOVAL AT DIFFERENT BUNCHES PHENOLOGICAL STAGES ON FREE AND GLYCOCONJUGATE AROMAS OF SKINS AND PULPS OF TWO ITALIAN RED GRAPES

Canopy-management practices are applied in viticulture to improve berries composition and quality, having a great impact on primary and secondary grape metabolism. Among these techniques, cluster zone leaf removal (defoliation) is widely used to manage air circulation, temperature and light radiation of grape bunches and close environment. Since volatiles are quantitatively and qualitatively influenced by the degree of fruit ripeness, the level of solar exposure, and the thermal environment in which grapes ripen, leaf removal has been shown to affect volatile composition of grape berries [1].

Read More

Sustainable strategies for the management and valorization of wine lees

Wine lees represent an abundant yet largely undervalorised by-product of the winemaking industry.

Read More