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Title: Fluorescence-sensor mapping for the in vineyard non-destructive assessment of crimson seedless table grape quality
Authors: Tuccio, Lorenza
Cavigli, Lucia
Rossi, Francesca
Dichala, Olga
Katsogiannos, Fotis
Kalfas, Ilias
Agati, Giovanni
Subjects LC: Grapes - Varieties
Food - Quality
Sensory evaluation
Precision farming
Keywords: Anthocyanin mapping
Chlorophyll mapping
Crimson Seedless
Precision viticulture
Optical sensors
Table grape
Issue Date: 12-Feb-2020
Publisher: MDPI Open Access Journals
Abstract: Non-destructive tools for the in situ evaluation of vine fruit quality and vineyard management can improve the market value of table grape. We proposed a new approach based on a portable fluorescence sensor to map the ripening level of Crimson Seedless table grape in five different plots in the East, Central-North and South of the Macedonia Region of Greece. The sensor provided indices of ripening and color such as SFRR and ANTHRG correlated to the chlorophyll and anthocyanin berry contents, respectively. The mean ANTHRG index was significantly different among all the plots examined due to the occurrence of different environmental conditions and/or asynchronous ripening processes. The indices presented moderate, poor in some cases, spatial variability, probably due to a significant vine-to-vine, intra-vine and intra-bunch variability. The cluster analysis was applied to the plot with the most evident spatial structure (at Kilkis). Krigged maps of the SFRR, ANTHRG and yield were classified by k-means clustering in two-zones that differed significantly in their mean values. ANTHRG and SFRR were inversely correlated over 64% of the plot. SFRR appeared to be a potential useful proxy of yield since it was directly correlated to yield over 66% of the plot. The grape color (ANTHRG) was slightly higher over the low-yield zones with respect to the high-yield zones. Our study showed that the combination of anthocyanins and chlorophyll indices detected in the field on Crimson Seedless table grape by a portable fluorescence sensor can help in defining the best harvest time and the best areas for harvesting.
Length: 14 pages
Type: Journal article
Publication Status: published
Citation: Tuccio, L, Cavigli, L, Rossi, F, Dichala, O, Katsogiannos, F, Kalfas, I & Agati, G 2020, ‘Fluorescence-sensor mapping for the in vineyard non-destructive assessment of crimson seedless table grape quality’, Sensors (Switzerland), vol. 20, no. 4.
Restrictions: All rights reserved
Attribution-NonCommercial 4.0 International
Language: en
Appears in Collections:Journal Articles

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