Georgios C.KOUFOS , Theodoros MAVROMMATIS , Stefanos KOUNDOURAS , Gregory V. 3 JONES 1 Department of Meteorology and Climatology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece 2 Laboratory of Viticulture, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece 3 Center for Wine Education, Linfield College, McMinnville, Oregon, USA. * Corresponding author: gckoufos@gmail.com

Context and purpose of the study ‐ Air temperature is arguably one of the most decisive factors for winegrape varieties developmental cycle, ripening potential and yield. Taking into account that predicted future warmer conditions will possibly impose challenges in global viticulture, it is of outmost importance to understand the adaptive capaci...

Ioannis KATSIKIS 1*, Dionissios KALIVAS1*, Georgios KOTSERIDIS2*, 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 *Corresponding author: maria.ioannaxenia@gmail.com

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 m...

Markus KELLER , Joelle MARTINEZ , Esther HERNÁNDEZ‐MONTES , Yun ZHANG , Ben‐Min CHANG1 Irrigated Agriculture Research and Extension Center, Washington State University, 24106 N. Bunn Road, Prosser, WA 99350, USA 2 Ste. Michelle Wine Estates, 660 Frontier Road, Prosser, WA 99350, USA *Corresponding author: mkeller@wsu.edu

Context and purpose of the study – Heat and drought episodes during the growing season are becoming more frequent and more severe in many of the world’s grape‐growing regions. However, the responses of grapevines to a combination of these stress factors are incompletely understood, which hampers the implementation of deficit irrigation and h...

Cesare INTRIERI, Ilaria FILIPPETTI, Gianluca ALLEGRO, Gabriele VALENTINI, Chiara PASTORE, Emilia COLUCCI Dipartimento di Scienze e Tecnologie Agroalimentari- Università di Bologna Corresponding Author: cesare.intrieri@unibo.it

Context and purpose of the study ‐ In previous experiments carried out in Bologna on Sangiovese grapevines raised with the Australian “Minimal Pruning” system, it has been shown that this system left an excessive burden of buds on the vine (650/meter of row) and inhibited the plant from correctly activating its physiologic self‐regulating ...

Gregory V. JONES Center for Wine Education, Linfield College, 900 SE Baker St, McMinnville, Oregon, USA *Corresponding author: gjones@linfield.edu

Context and purpose of the study The climate has warmed over the past century or more bringing about changes in numerous aspects in both earth and human systems. One of these systems, agriculture, is strongly influenced by climate, which largely determines what type, where, and how crops can be grown. Within agriculture, growing grapes and wine pr...

Bruno HOLZAPFEL 1 1 , Jason SMITH and Stewart FIELD 3 National Wine and Grape Industry Centre, Wagga Wagga, New South Wales 2678, Australia 2 NSW Department of Primary Industries, Wagga Wagga, New South Wales 2678, Australia 3 Nelson Marlborough Institute of Technology, Blenheim 7240, New Zealand *Corresponding author: bruno.holzapfel@dpi.nsw.gov.au

Context and purpose of the study ‐ The nutrient reserves in the grapevine perennial structure perform a critical role in supplying the grapevine with nutrients when demand cannot be meet by root uptake. The seasonal changes in these reserves largely depend on the developmental stage and the associated growth requirements of grapevines. These sto...

J.J. HUNTER1, M. BOOYSE2, C.G. VOLSCHENK1 1 ARC Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch, South Africa 2 ARC Biometry, Private Bag X5026, Stellenbosch, South Africa Corresponding author: hunterk@arc.agric.za

Context and purpose of the study ‐ Knowledge of vine reaction to plant spacing under high potential soil conditions is restricted. This study was done to determine effects of vine spacing (with fixed row spacing) of Shiraz/101‐14 Mgt on a high potential soil on vine physiological reaction, growth, yield and grape composition. The study is targ...

Evelina IGGOUMENAKI1, 2, Sofoklis PETROPOULOS1, Doris RAUHUT2, Konstantinos BAKASIETAS3, 1 1* Yiorgos KOTSERIDIS , Stamatina KALLITHRAKA 1 Laboratory of Enology, Department of Food Science and Technology, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece. 2 Hochshule Geisenheim University, Department of Microbiology and Biochemistry, Von-Lade-Str. 1, 65366, Geisenheim. 3 Hellenifera, VNB Bakasietas Vine Nursery, Leontio, Nemea, 20500, Corinth. *Corresponding Author: stamatina@aua.gr

Context and purpose of the study ‐ The aim of this study is the examination of wines of 9 different clones of a Greek grape variety Xinomavro, (ΧE1, X19, X22, X28, ΧE2 X30, X31, X35, X36, X37), with regards to their phenolic and anthocyanin content and chemical composition. Material and methods ‐ Grapes were collected in vintage 2016, from a...

Matteo GATTI 1 1,2 1 1 1,2 , Alessandra GARAVANI , Alberto VERCESI , Cecilia SQUERI , Michele CROCI , 2 2 1,2 Ferdinando CALEGARI , Massimo VINCINI , Stefano PONI DIPROVES Università Cattolica del Sacro Cuore, Via E. Parmense 84, I-29122 Piacenza, Italy 2 CRAST Università Cattolica del Sacro Cuore, Via E. Parmense 84, I-29122 Piacenza, Italy *Corresponding author: matteo.gatti@unicatt.it

Context and purpose of the study ‐ Precision nutrient management in viticulture can be addressed on the basis of a spatial characterization of within‐vineyard vine nutritional status derived from proximal or remote spectral observations. However, a key challenge is the discrimination between mineral deficiencies and water stress related issues...

Jose Carlos HERRERA , Katja ŠUKLJE , Stefania SAVOI , Alberto CALDERAN , Lorena BUTINAR , Enrico PETERLUNGER3, Giorgio ALBERTI3, Paolo SIVILOTTI3, Astrid FORNECK1 1 Universität für Bondenkultur (BOKU), Institute of Viticulture and Pomology, Konrad‐Lorenz Str. 24, 3430 Tulln, Austria 2 University of Nova Gorica, Wine Research Centre, Glavni trg 8, 5271 Vipava, Slovenia 3 University of Udine, Department of Agricultural, Food, Environmental and Animal Sciences, via delle Scienze 206, 33100 Udine, Italy *Corresponding author: jose.herrera@boku.ac.at

Context and purpose of the study ‐ Grapevine response to water deficit has been extensively studied. Nevertheless, debate still exists regarding some physiology adoption under drought, e.g. vulnerability to cavitation or iso‐anisohydric classification, among others. Discrepancies between published results, other than specific experimental setu...

Esther HERNÁNDEZ‐MONTES , Yun ZHANG , Noorani BARKAT , Markus KELLER 1 1* Irrigated Agriculture Research and Extension Center, Washington State University, 24106 N. Bunn Road, Prosser, WA 99350, USA 2 Ste. Michelle Wine Estates, 660 Frontier Road, Prosser, WA 99350, USA *Corresponding author: mkeller@wsu.edu

Context and purpose of the study – Recurring heat and drought episodes during the growing season can produce adverse impacts on grape production in many wine regions around the world. Although the effect of these factors on plant physiology and growth has been investigated separately, little is yet known about their interactions and the variabil...

Salvador GUTIÉRREZ , Juan FERNÁNDEZ‐NOVALES , Javier TARDÁGUILA , Maria Paz DIAGO 1 1* Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja) Finca La Grajera, Ctra. Burgos Km 6. (26007) Logroño, La Rioja, Spain. *Corresponding author:maria-paz.diago@unirioja.es

Context and purpose of the study‐ Knowledge of the spatial‐temporal variation of the grape composition within a vineyard may assist decision making regarding sampling and vineyard management, especially if selective harvest is aimed. To have a truthful picture of the spatial‐temporal dynamics of grape composition evolution during ripening in...

Joanna M. GAMBETTA1*, John BLACKMAN1, Andrew HALL2, Leigh M. SCHMIDTKE1, Bruno HOLZAPFEL1,3 1 National Wine and Grape Industry Centre, Charles Sturt University, Wagga Wagga, NSW 2560, Australia 2 Institute for Land, Water and Society, Charles Sturt University, Albury, NSW 2640, Australia 3 New South Wales Department of Primary Industries, Wagga Wagga, Australia *Corresponding author: jgambetta@csu.edu.au

Context and purpose of the study: Climate is a key parameter when the modulation of berry and subsequent wine composition is considered. Recent decades have already seen an increase in global surface temperatures, with a more pronounced effect on night temperatures. In Australia, very warm monthly minimum temperatures (two standard deviations high...

Sigfredo FUENTES , Claudia GONZALEZ VIEJO , Xiaoyi WANG and Damir D. TORRICO 1 1 School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, VIC 3010, Australia *Corresponding author: sfuentes@unimelb.edu.au

Context and purpose of the study ‐ Wine quality traits are usually given by parameters such as aroma profile, total acidity, alcohol content, colour and phenolic content, among others. These are highly dependent on the weather conditions during the growing season and management strategies. Therefore, it is important to develop predictive models ...

Marianna FASOLI , Chandra L. RICHTER , Sara ZENONI , Marco SANDRI , Paola ZUCCOLOTTO , 2 1 2,* Mario PEZZOTTI , Nick DOKOOZLIAN , and Giovanni Battista TORNIELLI 1 E&J Gallo Winery, Modesto, CA 95353, USA Department of Biotechnology, University of Verona, 37134 Verona, Italy 3 Big & Open Data Innovation Laboratory, University of Brescia, 25123 Brescia, Italy 2 *Corresponding author: giovannibattista.tornielli@univr.it

Context and purpose of the study ‐ In the last years the application of genomic tools to the analysis of gene expression during grape berry development generated a huge amount of transcriptomic data from different varieties and growing conditions. This information set the stage to understand the molecular basis of crucial developmental and metab...

Flor ETCHEBARNE1*, Hernán OJEDA2, Florence LUTIN3, Bernard GILLERY3, Jean‐Louis ESCUDIER2 1 2 Independent Scientist, F-11560 Saint Pierre la Mer, France UE PECH-ROUGE, INRA, Université de Montpellier, CIRAD, Montpellier SupAgro, F-11430, Gruissan, France 3 EURODIA, Chemin de Saint-Martin, F-84120 Pertuis, France *Corresponding author: flor.etchebarne@yahoo.com

Context and purpose of the study ‐ Nutrients in municipal treated wastewater (N, P, K, mainly) are a particular advantage in this source over conventional irrigation water sources, so supplemental fertilizers would sometimes not be necessary. However, additional environmental and health requirements are taken into account for this source of irri...

Everard J. EDWARDS , Jason SMITH , Amanda WALKER , Celia BARRIL , Annette BETTS , David FOSTER2, Julia GOUOT2, and Bruno HOLZAPFEL2,4 1 CSIRO Agriculture, Locked Bag 2, Glen Osmond, SA 5064, Australia National Wine and Grape Industry Centre, Wagga Wagga, Australia 3 School of Agricultural and Wine Sciences, Charles Sturt University Wagga Wagga, Australia 4 New South Wales Department of Primary Industries, Wagga Wagga, Australia 5 Current address: Hochschule Geisenheim University, Germany. 2 *Corresponding author: everard.edwards@csiro.au

Context and purpose of the study ‐ Vine balance is a concept describing the relationship between carbon assimilation (usually estimated using a measure of vine vigour, e.g. pruning weight) and its utilisation for fruit production (usually estimated using harvest yield). Manipulating vine balance through leaf area or crop load adjustments affects...

Gerardo ECHEVERRÍA , José M. MIRÁS‐AVALOS 2 1 2 Facultad de Agronomía, UDELAR, Garzón 780, 12900 Montevideo, Uruguay Escola Politécnica Superior de Enxeñaría, USC, Benigno Ledo s/n, 27002 Lugo, España *Corresponding author: gecheverria@fagro.edu.uy

Context and purpose of the study ‐ When considering the application of a systemic approach to assess the intrinsic complexity of agricultural production, the following question immediately arises: how is this synthesis made? In this sense, characterizing the joint effects of environmental factors and viticultural practices on vine functioning re...

Coralie DEWASME LAVEAU1*, Séverine MARY2, Guillaume DARRIEUTORT2, Laurent AUDEGUIN3, 4 1 Maarten VAN HELDEN , Cornelis VAN LEEUWEN 1 EGFV, Bordeaux Sciences Agro, INRA, Univ. Bordeaux, ISVV, 33882 Villenave d’Ornon, France 2 Univ. Bordeaux, Vitinnov, ISVV, 1 cours du Général de Gaulle, 33170 Gradignan, France 3 Institut Français de la Vigne et du Vin, Domaine de l’Espiguette, 30240 Le Grau du Roi, France 4 SARDI Entomology, Urrbrae SA 5064, University of Adelaide, Australia *Corresponding author: coralie.dewasme@agro-bordeaux.fr

Context and purpose of the study – Fifteen nepoviruses are able to induce fanleaf degeneration in grapes which is economically the most imprtant viral disease. Grapevine fanleaf virus (GFLV) is the main causal agent of this disease worldwide and Arabis mosaic virus (ArMV) is the second most important nepovirus involved in this disease in Europe....

Johanna DÖRING , Maximilian HENDGEN , Cassandra COLLINS , Georg MEIßNER , Matthias 1 1 1 FRIEDEL , Manfred STOLL , Randolf KAUER 1 HOCHSCHULE GEISENHEIM UNIVERSITY, Von-Lade-Str. 1, D-65366 Geisenheim, Germany *Corresponding author: johanna.doering@hs-gm.de

Context and purpose of the study ‐ The production of organically grown crops developed exponentially in the last few decades based on consumer demands for healthy food as well as environmentally friendly farming practices. Current agricultural and environmental policies are reacting to these demands with initiatives limiting the use of synthetic...