GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 GiESCO 2019 9 Monitoring of ripening and yield of vineyards in Nemea region using UAV

Monitoring of ripening and yield of vineyards in Nemea region using UAV

Abstract

Context and purpose of the study ‐ Nemea region is the largest POD zone in Greece. Agiorgitiko (Vitis vinifera L. cv.) is the most cultivated variety in Greece with significant wine potential. Due to the extension of the area there is a great variability of soil content and climatic conditions. Seven vineyards in the POD zone were selected and monitored for ripening evolution and yield of vine plots using UAV through the extraction of vegetation indices (NDVI, NDRE, GNDVI and OSAVI). Grapes were harvested at maturity and the enological potential was estimated. Winemaking was applied in order to evaluate the potential of each sub‐zone and in order to search if any connection with the vegetation indices. The aim of this study is to research the “terroir” impact in Agiorgitiko grapes and compare the quality features in order to split the Nemea region in subzones.

Material and methods ‐ Four flights took place during the summer of 2018. The UAV platform used was the DJI Matrice 100 and was equipped with the Parrot Sequoia camera. The collected images were combined into orthosmosaics and further analysis was made by combining these mosaics and extracting vegetation indices. From each vineyard grapes were sampled to be analyzed for their physicochemical properties (sugar content, total acidity, pH, YAN, color characteristics). Furthermore, grapes from each vineyard were harvested on the technological maturity level. The same vinification protocol was applied in all samples. After the alcoholic fermentation was conducted the wines were inoculated with lactic bacteria for malolactic fermentation. Classical analysis was performed in all samples.

Results ‐ Vegetation indices (NDVI, NDRE, GNDVI and OSAVI) showed significant differences in each vineyard. Also, significant differences were observed in grapes and wines originated from different vineyards. Phenolic and anthocyanin profile indicated a greater potential in wines from vineyards in higher altitude.

Download the PDF

DOI:

Publication date: June 22, 2020

Issue: GiESCO 2019

Type: Article

Authors

Ioannis KATSIKIS (1), Dionissios KALIVAS (1), Georgios KOTSERIDIS (2), Maria Ioanna XENIA (2)

(1) AUA Department of Natural Resources Management & Agricultural Engineering, Laboratory of Soil Science and Agricultural Chemistry, G.I.S. Research Group, Athens, Greece
(2) AUA Department of Food Science & Human Nutrition, Laboratory of Oenology and Alcoholic Beverages, Athens, Greece

Contact the author

Keywords

Agiorgitiko, Remote Sensing, Ripening Monitor, Vegetation Indices, Wine Analysis

Tags

GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Effect of stilbenes on malolactic fermentation performance of onoccocus oeni and lactiplantibacillus plantarum strains in wine production

Malolactic fermentation (MLF) is an important step in winemaking to improve wine quality through deacidification, increased microbial stability, and altered wine flavor. The phenolic composition of wine influences the growth and metabolism of lactic acid bacteria (lab) used for MLF.

Read More

Phenolic composition and physicochemical analysis of wines made with the syrah grape under double pruning in the Brazilian high-altitude cerrado

Wine growing has proven to be a development opportunity for agribusiness in several new regions of brazil, including the federal district. There are more than ten existing wineries, established in the last five years. Through the double pruning system, which consists of trimming the growing shoots in the summer and positioning the ripening of the fruits in a cooler period of the season, the grapes are sought to ripen more completely. The syrah variety has shown excellent adaptation to this cycle management model.

Read More

Viticultural zoning using spatial analysis: characterizing terroirs over the Southern part of the Côtes-du-Rhône appellation (France)

Les approches du terroir en tant qu’entité géographique (zonages) connaissent un développement accru récent en lien avec l’essor des SIG. Les méthodes, les objectifs et les critères utilisés varient considérablement selon les études.

Read More

Monitoring the establishment of a synthetic microbial community with a potential biocontrol activity against grapevine downy mildew using a microfluidic qPCR chip

Grapevine downy mildew, caused by the oomycete Plasmopara viticola, is responsible for significant economic losses each year and for a large proportion of the fungicides used in viticulture.

Read More

Does foliar fertilization with Seaweed improve the productivity and quality of ‘Merlot’ grape must?

Developing technologies that help vines survive and produce in quantity and quality within current times is mandatory. In this sense, in the 2021/2022 agricultural harvest, the influence of the foliar application of seaweed – Laminaria japonica was studied, aiming at productivity and quality of the must in the ‘Merlot’ grape. In the city of “Santana do Livramento”, “Rio Grande do Sul” (RS), Brazil; in a 15-year-old commercial vineyard of ‘Merlot’ clone ENTAV-INRA® 347, grafted onto ‘SO4’ rootstock, the following treatments were applied on 6 occasions: No treatment (control) and; Foliar application of Laminaria japonica seaweed (commercial product: Exal (ALAS), 2 kg ha-1).

Read More