Nikolaos AGGELOPOULOS1, Dimitrios STATERAS1, Antonios PAPADOPOULOS2, Anastasia 1 1 PRIOVOLOU , Dionissios KALIVAS * 1 Laboratory of Soil Science, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece 2 Benaki Phytopathological Institute, 8 Stefanou Delta Street, Kifissia, 14561 Athens, Greece *Corresponding author: kalivas@aua.gr

Context and purpose of the study - Geospatial technologies have significant contribution to viticulture, especially in small-scale vineyards, which require precise management. Geospatial data collected by modern technologies, such as Unmanned Aerial Vehicle (UAV) and satellite imagery, can be processed by modern software and easily be stored and t...

Lucas AMARAL *, Luísa TANNURE , Marite DAL’OSTO , FlorençaBORGES PURGATTO1,2 1 1,2 and Eduardo Dept. of Food Science and Exp. Nutrition, School of Pharmaceutical Sciences USP– 05508-000 São Paulo Brazil 2 Food Research Center (FoRC), CEPID-FAPESP – USP– 05508-000 São Paulo - Brazil 3 Instituto Federal de São Paulo- IFSP – 18145-090, São Paulo - Brazil *Corresponding author: lucasbamaral@usp.br

Context and purpose of the study - The aromatic perception is one of the main factors that influence the consumer when determining the wine’s quality and acceptance. Numerous factors (soil, climate, winemaking style, cultivar) can influence the volatile compounds. Some of these compounds are released directly from the grape berries while others ...

F. Javier ABAD1,2*, Félix CIBRIÁIN3, Luis G. SANTESTEBAN2, Diana MARÍN2, Ana SAGÜÉS3 1 2 INTIA, Edificio de Peritos Avda. Serapio Huici nº 22, 31610, Villava, Spain Dpt. Agronomy, Biotechnology and Food Science, Univ. P. de Navarra, Campus Arrosadia, 31006 Pamplona, Spain 3 Sección de Viticultura y Enología, Gobierno de Navarra, C/Valle de Orba nº34, 31390, Olite, Spain *Corresponding author: jabad@intiasa.es

Context and purpose of the study- Cover crops are acknowledged to be an interesting tool to produce higher quality grapes in red varieties, as they generally reduce vine vigour and yield. However, their incidence in white wine quality is not clear, since higher nitrogen availability can play an important positive role, and cover crops may compete ...

Johan VAN ZYL* and Eduard HOFFMAN Soil Science Department, Stellenbosch University, Stellenbosch, 7602, Republic of South Africa *Corresponding author: johanvz@sun.ac.za

Context and purpose of the study ‐The majority of soils used for wine and table grape production in South Africa are notoriously shallow, i.e. they are restricting root penetration. The result of such shallow soils is uneven and poor vineyard performance that eventually lead to unprofitable vineyards. The purpose of this study was to investigate...

Yvette WOHLFART , Cassandra COLLINS , Manfred STOLL 1 Hochschule Geisenheim University, Department of General and Organic Viticulture, Von-Lade-Str. 1, 65366 Geisenheim, Germany 2 School of Agriculture, Food and Wine, University of Adelaide, Waite Research Institute, Glen Osmond, 5064, Australia *Corresponding author: yvette.wohlfahrt@hs-gm.de

Aims:Microscopic bud dissection is a common tool used to assess grapevine bud fertility and therefore to predict the yield of the following season. Grapevine yield has been shown to increase under elevated carbon dioxide (eCO2) concentration and was demonstrated under Free Air Carbon dioxide Enrichment (FACE) conditions. The effect of eCO2 on bud ...

Daniele ZACCARIA1*, Lynn WUNDERLICH2, Giulia MARINO1, Kristen SHAPIRO1, Sloane RICE1, Kenneth SHACKEL3, Richard SNYDER1 1 Department of Land, Air and Water Resources, UC-Davis, One Shields Avenue, Davis, CA. 95616 USA. 2 UCCE, 311 Fair Lane, Placerville, CA. 95667 USA. 3 Department of Plant Sciences, UC-Davis, One Shields Avenue, Davis, CA. 95616, USA. *Corresponding author: dzaccaria@ucdavis.edu

Context and purpose of the study – Many winegrape regions have hillside vineyards, where vine water use is affected by vine age, density and health, canopy size, row orientation, irrigation practices, and by block slope and aspect. Topography affects the amount of solar radiation the vines receive, which is a major “driving force” of evapotr...

Jesus YUSTE1*, Daniel MARTINEZ‐PORRO1 1 INSTITUTO TECNOLOGICO AGRARIO DE CASTILLA Y LEON, Ctra. Burgos km 119, 47071 Valladolid, Spain *Corresponding author: yusbomje@itacyl.es

Context and purpose of the study ‐ Irrigation management is a critical aspect in grapevine cultivation to regularize grape production and quality in areas of clear water limitation. The scarcity of information implies the need to know the plant water status to make an estimate of the response of cv. Verdejo to the variation of water regime in vi...

Luis VILLALOBOS‐GONZÁLEZ , Constanza QUINTANA , Dayna DONAIRE , Mariana MUÑOZ‐ 1 1* ARAYA , Nicolás FRANCK, Claudio PASTENES 1 Universidad de Chile, Facultad de Ciencias Agronómicas. *Corresponding author:cpastene@uchile.cl

Context and purpose of the study ‐ Different from wild species in arid and semiarid conditions, cultivated species are very sensitive to drought and, beyond some stress thresholds, food production is not possible. It is therefore important to gain further knowledge on the responses of plant species of agricultural importance to realistic water s...

Larry E. WILLIAMS* and Matthew FEDELIBUS Department of Viticulture and Enology University of California – Davis and Kearney Agricultural Research and Extension (KARE) Center 9240 S. Riverbend Avenue Parlier, CA 93648 *Corresponding author: lewilliams@ucanr.edu

Context and purpose of the study ‐ Ground water in the interior valleys of California is contaminated with nitrates derived from agricultural activities, primarily the over fertilization of crops. Agriculture is now mandated by the State of California to monitor all possible nitrogen (N) inputs into agro‐ecosystems and only apply N amounts tha...

Thibaut VERDENAL1,2*, Jorge E. SPANGENBERG2, Vivian ZUFFEREY1, Agnes DIENES‐NAGY1, Olivier VIRET3, Cornelis VAN LEEUWEN4, Jean‐Laurent SPRING1 1 Agroscope, Av. Rochettaz 21, CH-1009 Pully, Switzerland Institute of Earth Surface Dynamics, University of Lausanne, CH-1015 Lausanne, Switzerland 3 Direction générale de l’agriculture, de la viticulture et des affaires vétérinaires (DGAV), Av. de Marcelin 29, CH-1110 Morges, Switzerland 4 EGFV,Bordeaux Sciences Agro, INRA, Univ. Bordeaux, ISVV, F-33882 Villenave d’Ornon, France 2 *Corresponding author: thibaut.verdenal@agroscope.admin.ch

Context and purpose of the study ‐ Agroscope is investigating the impact of yield on nitrogen (N) partitioning in grapevine and on must composition. The mechanism of N assimilation, partitioning and 15 mobilization from the reserves is studied through foliar application of N isotope‐labelled urea over a two‐year period. The final scope is to...

Katja ŠUKLJE1,3, Guillaume ANTALICK1,4, Campbell MEEKS1, John BLACKMAN1,2, Alain 1,5 1,2 DELOIRE* ,Leigh SCHMIDTKE 1 National Wine and Grape Industry Centre, Charles Sturt University, Locked Bag 588, Wagga Wagga, NSW 2678, Australia; 2 School of Agricultural and Wine Sciences, Charles Sturt University, Locked Bag 588, Wagga Wagga, NSW 2678, Australia 3 Present addresses: Agricultural Institute of Slovenia, Department of Fruit Growing, Hacquetova 17, 1000 Ljubljana, Slovenia; 4 Wine research centre, University of Nova Gorica, Glavni trg 8, 5271 Vipava, Slovenia; 5 Montpellier SupAgro‐IHEV‐BE, 2 Place Pierre Viala, 34060 Montpellier, France *Corresponding author: alain.deloire@supagro.fr

Context and purpose of the study ‐ Grape ripening is a process driven by the interactions between grapevine genotypes and environmental factors. Grape composition is largely responsible for the production and final concentrations of most wine aroma compounds even though many compounds in wines (aromatic and non‐aromatic) are substantially tran...

Diego TOMASI , L. LOVAT , T. NARDI , A. LONARDI 1 2 CREA-VE, via XXVIII Aprile, 26 - 31015 Conegliano (TV) Italy BERTANIDOMAINS, Via Asiago, 1 - 37023 Grezzana (VR) Italy *Corresponding author:diego.tomasi@crea.gov.it

Context and purpose of the studyIn Valpolicella area (Verona – Italy) Vitis vinifera cv. Corvina is the main wine variety to obtain, after grape withering, Amarone wine: this study was carried out in order to compare two different grape dehydration conditions with the aim of verifying the final composition of Corvina dried grapes and the organol...

Cyril TISSOT *, Mathias ROUAN , Renan LE ROUX , Etienne NEETHLING , Laure de 4 4 4 2 5 5 RERREGUIER , Théo PETITJEAN , Cornelis van LEEUWEN , Hervé QUENOL , Irima LIVIU , Cristi PATRICHE 1 UMR 6554 CNRS LETG, Brest, France UMR 6554 CNRS LETG, Rennes, France 3 LEESA, Angers, France 4 ISVV, Villenave-d'Ornon, France 5 University of Agricultural Sciences, Iasi, Romania 2 *Corresponding author: cyril.tissot@univ-brest.fr

Context and purpose of the study‐ Global climate change affects regional climates and hold implications for wine growing regions worldwide (Jones, 2007 and 2015; Van Leeuwen and Darriet, 2016). The prospect of 21st century climate change consequently is one of the major challenges facing the wine industry (Keller, 2010). They vary from short‐t...

Stefano PONI , Tommaso FRIONI , Matteo GATTI 1 DIPROVES, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza (Italy) *Corresponding author: stefano.poni@unicatt.it

Under the pressure of global warming, several wine grape growing regions around the world are increasingly suffering from advanced and compressed phenology; endangering wine character while also creating serious logistic problems. From a physiological standpoint, the issue of delaying ripening is not simple as, in several instances, only a few pro...

Haroula SPINTHIROPOULOU 1 KIR YIANNI Giannakochori, Naoussa, Greece *Corresponding author: haroulaargatia@gmail.com

Xinomavro is the most important indigenous red wine variety grown in Northern Greece. It participates in the production of several PGI wines in Macedonia while from 100% Xinomavro the PDO “Amyndeon” and “Naoussa” are produced. The viticultural area of Amyndeon lies in a plateau of 550 ‐700 m of altitude, in a semi‐continental climate w...

Rezk SHAHOOD , Stefania SAVOI , Antoine BIGARD , Laurent TORREGROSA , Charles ROMIEU * 1 2 General Commission for Scientific Agricultural Research, Latakia, Syria AGAP, Montpellier University, CIRAD, INRA, Montpellier SupAgro, Montpellier, France *Corresponding author: charles.romieu@inra.fr

Context and purpose of the study ‐ Presentknowledge about grape development is mainly driven by the premise that a typical berry would follow the same kinetics as the population average, the principal challenge being to gather representative samples. In this frame, the elaboration of harvest quality directly reflects the impact of the GenotypexE...

Markus RIENTH *, Sana GHAFFARI , Jean‐Sébastien REYNARD 3 1 2 Changins, haute ecole de viticulture et œnologie, route de Duillier 50, 1260 Nyon, Switzerland Higher Institute of Applied Biology of Medenine, Route el Djorf km 22.5, 4119 Medenine, Tunisia 3 Agroscope, route de Duillier 50, 1260 Nyon, Switzerland *Corresponding author: markus.rienth@changins.ch

Context and purpose of the study ‐ Grapevine leafroll associated virus (GLRaV) infections deteriorate vine physiological performance and cause high losses of yield and fruit quality and are thus causing serious economic losses in the wine industry. Physiological and molecular studies on the impact of leafroll infections on plant and fruit metabo...

Tadeja SAVI*, Almudena GARCÍA GONZÁLEZ, Jose Carlos HERRERA, Miroslaw WIERZYK, Astrid FORNECK* University of Natural Resources and Life Sciences, Vienna (BOKU), Institute of Viticulture and Pomology, Department of Crop Sciences, Konrad Lorenz Straße 24, A-3430 Tulln. *Corresponding authors: astrid.forneck@boku.ac.at&tadeja.savi@boku.ac.at

Context and purpose of the study ‐ Climate change is increasing the frequency and severity of drought periods leading to significant impacts on agro‐economic activities, with particular regard to viticulture. Moreover, in the last decades the wine‐making industry is further threatened by new outbreaks of grape phylloxera (Daktulosphaira viti...

Andrew REYNOLDS , Briann DORIN , Hyun‐Suk LEE , Adam SHEMROCK , Ralph BROWN , 1 Marilyne JOLLINEAU 1 2 Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada AirTech UAV Solutions INC. 1071 Kam Ave, Inverary, ON K0H 1X0, Canada *Corresponding author:areynolds@brocku.ca

Context and purpose of the study – Vineyard blocks can vary spatially with respect to several viticulturally significant qualities such as soil variables, vine vigor, vine physiology, yield components, and berry composition. The ability to detect this variation enables the application of precision viticulture, whereby intra‐vineyard variabilit...

Abbal, PHILIPPE1*, Céline PONCET LEGRAND1, Stephanie CARILLO1, Magali BES3, Marie Agnès 4 2 2 DUCASSE , Elissa.ABI‐HABIB , Aude VERHNET 1 INRA, UMR SPO 2, Place viala, 34060 Montpellier Cedex 2 SupAgro, 2, Place viala, 34060 Montpellier Cedex 3 INRA, UMT Minicave, UE Pech Rouge, 11430 Gruissan 4 IFV, UMT Minicave, Domaine de Pech Rouge, 11430 Gruissan *Corresponding author:philippe.abbal@inra.fr

Context and purpose of the study: The mechanical strength or firmness of a fruit is considered an important parameter to characterize its state of maturity or conservation, as other parameters such as sugar level or color. The mechanical resistance of grapes influences the integrity and sanitary quality of the harvest. In this study, the mechanica...