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.

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…

Wine microbial diversity and cross-over applications: emerging results and future perspectives

AIM: Cross-over applications are an emerging technological approach in food microbiology where a microorganism from one traditional specific fermentation process is used to improve quality and safety in another agri-food production/chain (Dank et al., 2021). A complex microbial diversity is found in association with fermentation in wine, including Saccharomyces, non-Saccharomyces and malolactic bacteria,  all microorganisms versatile in terms of enological utilisation (Tempère et al., 2018). Here, we propose a systematic literature review highlighting the existing trends and possible future applications related to cross-over exploitation of wine-related microbiota. 

Influence of Potential Alcohol and pH Adjustment on Polyphenols and Sensory Characteristics of Red Wines Produced at Different Harvest Time Points

Wine quality is influenced by grape maturity, typically monitored by measuring sugar content and acidity.

Biovi: a research program for reducing chemical input in vine and wine

Decrease of chemical inputs during vine management and winemaking is of great importance from a political and societal point of view. In our ongoing project we propose alternative tools to chemicals in the vineyard and the cellar. We have compared a conventional vineyard protection strategy to an alternative strategy using copper and biocontrol products (Biocontrol) against downy

The use of viticultural and oenological performance of grapevines to identify terroirs: the example of Sauvignon blanc in Stellenbosch

Identification and characterisation of terroirs depends on knowledge of environmental parameters, functioning of the grapevine and characteristics of the final product. A network of plots of Sauvignon blanc was delimited in commercial vineyards in proximity to weather stations at 20 localities and their viticultural and oenological response was monitored for a period of seven years. These experimental plots were further characterised with respect to climate, soil and topography.

Precision viticulture: using on-board sensors to map vine variability and characterize vine trajectories

Precision viticulture consists in using ICT (Information and Communication Technology) to implement more specific and better targeted technical vine practices. With proxy-detection