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...

Zhanwu DAI , Jinliang CHEN , Junqi ZHU , Michel GENARD , Bertrand BEAUVOIT , Stefano PONI5, Sophie COLOMBIE4, Gregory GAMBETTA1, Philippe VIVIN1, Nathalie OLLAT1, Serge DELROT1, Yves 4 1 GIBON , Eric GOMES 1 2 EGFV, Bordeaux Sci Agro, INRA, Univ. Bordeaux, F-33882 Villenave d'Ornon, France. The New Zealand Institute for Plant & Food Research Limited (PFR) Marlborough, Blenheim 7240, New Zealand. 3 INRA, UR 1115 Plantes et Systèmes de Culture Horticoles, Avignon, France. INRA, UMR 1332 Biologie du Fruit et Pathologie, F33883 Villenave d’Ornon, France. 5 Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy. 4 *Corresponding author: zhanwu.dai@inra.fr

Context and purpose of the study – Grape quality is a complex trait that mainly refers to berry chemical composition, including sugars, organic acids, phenolics, aroma and aroma precursor compounds. It is known that the composition and concentration of chemical compounds dynamically change along berry development and can be affected by genotypes...

Silvina DAYER , Régis BURLETT , Laurent LAMARQUE , Sylvain DELZON , Gregory GAMBETTA 1 Institut des Sciences de la Vigne et du Vin, Écophysiologie et Génomique Fonctionnelle de la Vigne, UMR 1287, 210 Chemin de Leysotte, F-33140 Villenave-d’Ornon, France 2 Biodiversité Gènes et Communautés, Institut National de la Recherche Agronomique (INRA), Université Bordeaux, 33610 Cestas, France *Corresponding author:silvina.dayer@inra.fr

Context and purpose of the study ‐Evaluation of xylem embolism is an important challenge in identifying drought tolerant genotypes within the context of climate change. Visualization methods such as the optical vulnerability technique (Brodribb et al. 2016) has been shown to be a reliable and accessible approach to observe the spread of embolism...

Roberta DE BEI , Xiaoyi WANG , Lukas PAPAGIANNIS , Massimiliano COCCO , Patrick 1 O’BRIEN , Marco ZITO1,4, Jingyun OUYANG1, Sigfredo FUENTES5, Matthew GILLIHAM1,2, Steve TYERMAN1,2 and Cassandra COLLINS1 1 The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Institute, PMB 1 Glen Osmond, 5064, South Australia. Australia 2 ARC Centre of Excellence in Plant Energy Biology, Waite Research Institute, PMB 1 Glen Osmond, 5064, South Australia, Australia; 3 4 The University of Sassari, Department of Agriculture, Viale Italia 39, 07100, Sassari, Italy. Istituto di Scienze della Vita, Sant'Anna School of Advanced Studies, Piazza dei Martiri della Libertà 33, 56127 Pisa, Italy 5 The University of Melbourne, Faculty of Veterinary and Agricultural Sciences. Parkville, 3010. Victoria, Australia *Corresponding author: roberta.debei@adelaide.edu.au

Context and purpose of the study ‐ An advancement of grapevine phenological development has been observed worldwide in the last two decades. In South Australia this phenomenon is even more accentuated since grapevine is often grown in a hot climate. The main consequences are earlier harvests at higher sugar levels which also result in more alcoh...

Alain CARBONNEAU 1 1 GiESCO Honorary President, 10 rue des tamaris, F‐34170 Castelnau le Lez Corresponding author : ma2.carbonneau3@orange.fr

The key points of the current GiESCO charter ‘BIO‐MetaEthics’ are exposed. The new development in cooperation with Giovanni Cargnello is to apply the principles and the content into the practice by establishing a direct contract with producers and other actors of the wine sector. An evaluation sheet is proposed and tested in a new advanced v...

Alain CARBONNEAU1 1 GiESCO Honorary President, 10 rue des tamaris, F-34170 Castelnau le Lez Corresponding author: ma2.carbonneau3@orange.fr

40 years of GiESCO activities are briefly presented, insisting on the recent evolutions. Then the engagement for sustainability since 2015 is justified, particularly the main principles : the objective of priority to man, the research of the minimum impact and the guarantee of transparency, communication and evaluation. Finally the GiESCO spirit a...

Cassandra COLLINS1, Xiaoyi Wang1, Marco ZITO1,2, Jingyun OUYANG1, Annette JAMES1, Roberta DE BEI1, Catherine KIDMAN1,3, Peter DRY1 1 The University of Adelaide, School of Agriculture, Food and Wine, Waite Research Institute, PMB 1 Glen Osmond, 5064, South Australia. Australia 2 Istituto di Scienze della Vita, Sant'Anna School of Advanced Studies, Piazza dei Martiri della Libertà 33, 56127 Pisa, Italy 3 Wynns Coonawarra Estate, PO Box 319 Coonawarra, South Australia 5263, Australia *Corresponding author: cassandra.collins@adelaide.edu.au

Context and purpose of the study ‐ Vineyards are highly variable and this variation is largely driven by environmental conditions and seasonal variation. For example, warm temperatures and sunny days during bud initiation generally result in high yields in the next season while cold periods during flowering and fruitset can reduce yield. As such...