Australian Journal of Grape and Wine Research最新文献

{"title":"Could Australia’s Social Media Ban for Minors Help Revive a Shrivelling Wine Industry?","authors":"Sigfredo Fuentes, Claudia Gonzalez Viejo, Arnika Wain, Imogen Cowley, Billy Xynas, Chris Barnes","doi":"10.1155/ajgw/3927152","DOIUrl":"https://doi.org/10.1155/ajgw/3927152","url":null,"abstract":"<p>The global wine industry is facing a sobering reality: consumption is falling, and it is falling fastest among younger legal-age drinkers, especially the group whose long-term habits will define the industry’s future. This decline is remarkable given wine’s historical role as the beverage of social connection, anchoring dinner parties, weddings, long lunches, and the exchange of ideas that define shared meals; if fewer people are drinking wine, fewer people may also be engaging in the social occasions it has traditionally accompanied. Public health concerns around alcohol, now at historically high levels of awareness, explain part of this decline, and any discussion of wine’s future must take this seriously rather than treat it as a side note.</p><p>Global wine consumption fell to 214.2 million hectolitres in 2024, which is the lowest level recorded since 1961, and has declined further to 208 million hectolitres in 2025, a cumulative fall of approximately 14% since 2018 according to the International Organisation of Vine and Wine [<span>1</span>, <span>2</span>], a trend independently corroborated by Euromonitor International data showing a comparable 13.9% decline in global volume within 2016–2026 [<span>3</span>]. Notably, Australia’s domestic total wine volume declined by a smaller margin over the same period, approximately 8.7%, and appears to have stabilised since 2023, a pattern that predates the 2026 social media legislation and should temper any casual attribution of future domestic trends to the ban [<span>4</span>]. This decline reflects a generational shift as much as a volume problem: older consumers, who make up the largest share of wine drinkers are reducing their intake, while younger generations are not adopting wine at previous levels [<span>4</span>], and this is accompanied by a premiumisation effect, with average bottle prices roughly rising approximately 30% since 2019–2020 among the smaller base of remaining drinkers, even as overall volume falls [<span>5</span>, <span>6</span>]. Together, these trends suggest that reversing the decline requires more than restoring social occasions; it requires shifting generational attitudes towards wine itself.</p><p>Public health concerns around alcohol, now at historically high levels of awareness, explain part of this decline, and any discussion of wine’s future must take this seriously rather than treat it as a side note. Yet wine’s health implications are not uniform: several studies report that wine’s association with favourable health outcomes is more consistent for moderate consumption within meal-based patterns, such as the Mediterranean diet, than for drinking outside meals or in isolation [<span>7</span>, <span>8</span>]. Proposed mechanisms include slower alcohol absorption when consumed alongside food, more moderated blood-alcohol curves and an association between meal-based drinking and planned, social occasions rather than solitary consumption. This remains a debated area","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/3927152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toward Systemic Scaling of Producer-Led Trials: Evidence From a Structured, Adaptive and Supported Approach in Vineyards","authors":"Katherine J. Evans,&nbsp;Vaughan Higgins","doi":"10.1155/ajgw/9991926","DOIUrl":"https://doi.org/10.1155/ajgw/9991926","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background and Aims</h3>\u0000 \u0000 <p>Producers experiment to help solve problems and adapt viticultural practices for profitability and sustainability. Constraints on their own experimentation include the availability of time and labour and simple, easy-to-implement trial designs delivering results that give confidence in operational decisions. The aim of this study was to implement, adapt and evaluate participatory processes and in-vineyard methods during producer-led trials to understand key features for success.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>Thirteen wine businesses conducted 23 modified strip trials over two seasons in Tasmania. Participants were guided, observed and interviewed as they developed and implemented one or more trials to test various cultural, chemical and biological control tactics for the management of botrytis bunch rot and powdery mildew. Qualitative data from multiple sources (field notes, correspondence, evaluation surveys and semistructured interviews) revealed that participation was a positive experience and that producers were keen to continue doing trials using a structured approach shaped by them. Workshops helped participants share and interpret trial results. Interested stakeholders then identified pathways for systemic scaling through existing wine sector networks and training.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>A structured, adaptive and supported approach with in-built accountabilities helped producers to complete trials effectively and efficiently. Key features for success include a simple trial design producing robust results with minimal data collection; timely access to suitable technical experts and facilitators well versed in the integration of expert and local knowledges; professionals offering guidance without dominating the process; and facilitated knowledge exchanges among participants to maximise learning, reflection and planning for next trials.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Significance of the Study</h3>\u0000 \u0000 <p>We demonstrated a means to operationalise a practical, systemic and accelerated learning process through on-farm experimentation that centres on the producer in collaborations with technical experts and allied professionals. This scalable methodology is compatible with how farmers experiment in practice and motivates producer ownership in the process and outcomes.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/9991926","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the Response of Selected Reference and Alternative Wine Cultivars to Dryland Conditions in the Swartland Region of South Africa","authors":"Carolyn Howell,&nbsp;Karen Freitag,&nbsp;Reckson Mulidzi","doi":"10.1155/ajgw/9846577","DOIUrl":"https://doi.org/10.1155/ajgw/9846577","url":null,"abstract":"<p>Grapevines depend on adequate water for sustainable yield and quality. However, according to climate change forecasts, rainfall in the Western Cape Province of South Africa could become lower. In the Swartland Region, many vineyards are grown under dryland conditions or with limited volumes of irrigation water. In this regard, the drought tolerance of grapevines refers to the degree to which they are adapted to arid or drought conditions. Therefore, the risk of yield losses for dryland and irrigated vineyards could be reduced if drought-tolerant wine cultivars are planted more extensively. Therefore, a field trial was conducted in a specially planted experimental vineyard near Malmesbury, South Africa, to assess the drought tolerance of selected wine cultivars. All wine cultivars were planted in July 2018 at a spacing of 3.00 × 1.25 m and were unirrigated. Red wine cultivars were Arinarnoa, Durif, Grenache noir, Malbec, Marselan, Pinotage (reference), Shiraz (reference), Tempranillo and Touriga Naçional. White wine cultivars were Assyrtiko, Chardonnay (reference), Chenin blanc (reference), Macabeo, Marsanne, Piquepoul blanc, Verdelho and Vermentino. Grapevines were trained onto a vertical shoot positioning (VSP) trellis system. Grapevines differed in their plant water status. The strongest vegetative growth was observed for Shiraz and Assyrtiko, and the poorest growth was for Piquepoul blanc. Under the prevailing conditions, Durif, Grenache noir, Marselan and Pinotage showed potential to be selected as suitable red wine cultivars when yield is the primary consideration. For the white wine cultivars, Macabeo, Piquepoul blanc and Vermentino showed the best production potential under the prevailing conditions. However, retarded ripening should be expected for Macabeo and Piquepoul blanc. When an optimum balance is sought between yield and overall wine quality, Arinarnoa, Durif, Grenache noir, Pinotage, Chenin blanc, Macabeo, Piquepoul blanc and Vermentino would be suitable. Under the prevailing conditions, the performance index was the lowest for Malbec, Assyrtiko, Chardonnay and Verdelho.</p>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/9846577","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolution of Scientific Research on Organic Viticulture: A Comprehensive Bibliometric Analysis","authors":"Laise de Souza de Oliveira,&nbsp;Rafael Henrique Pertille,&nbsp;João Victor de Lima Santos,&nbsp;Moeses Andrigo Danner,&nbsp;António Castro Ribeiro,&nbsp;Idemir Citadin","doi":"10.1155/ajgw/5938774","DOIUrl":"https://doi.org/10.1155/ajgw/5938774","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background and Objectives</h3>\u0000 \u0000 <p>Organic viticulture has gained prominence as a sustainable production alternative. However, integrated analyses capable of distinguishing studies directly oriented toward organic production from the broader scientific foundation that supports technical transitions remain scarce. Publications in this field exhibit convergent structures, in which supporting research provides explanatory and ecological foundations, whereas studies directly focused on production have evolved from input substitution toward a more systemic perspective. Therefore, this study aimed to examine the structure, evolution, and thematic integration of research on organic viticulture.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>A bibliometric analysis was performed using VOSviewer and Bibliometrix, based on data retrieved from the Web of Science Core Collection. The final dataset comprised 324 original research articles published between 1996 and 2025. The results revealed a marked increase in publications after 2015, with Europe accounting for the largest share of global scientific output. Brazil ranked second among the most productive countries and showed a high prevalence of single-country publications. The main thematic axes were biodiversity, soil management, and plant health, while copper emerged as a cross-cutting element connecting multiple research fronts.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Research on organic viticulture has evolved from an initial phase focused on input substitution toward a more integrated agroecological approach, indicating increasing interdisciplinary maturity. However, the complete replacement of copper-based products still depends on further advances in understanding the mechanisms of action of available alternatives, as well as on their validation under field conditions.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/5938774","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Addition of SO2 Alternatives During Lees Ageing on Chardonnay Wine Composition","authors":"Pei-Chin Tsai,&nbsp;Leandro Dias Araujo,&nbsp;Shaoyang Wang,&nbsp;Eveline Bartowsky,&nbsp;Romina Meloni,&nbsp;Bin Tian","doi":"10.1155/ajgw/6490904","DOIUrl":"https://doi.org/10.1155/ajgw/6490904","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background and Aims</h3>\u0000 \u0000 <p>Lees ageing is widely applied in Chardonnay winemaking to enhance aroma complexity and mouthfeel through yeast autolysis. Sulphur dioxide (SO₂) is commonly used during this stage for antioxidant and antimicrobial protection; however, consumer demand for reduced-sulphite wines has encouraged the evaluation of alternative protectants. This study investigated the effects of chitosan and glutathione-enriched inactivated dry yeast (GSH-IDY), applied alone or with reduced SO₂, on Chardonnay wine composition and sensory attributes during lees ageing and subsequent bottle ageing.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>Wines treated with SO₂, chitosan and GSH-IDY, or combinations with reduced SO₂ were evaluated at bottling and after 6 and 12 months of bottle ageing. At bottling, chitosan reduced browning and total phenolics and increased diacetyl concentrations. GSH-IDY produced phenolic and colour profiles similar to SO₂ and increased free amino acid (FAA) concentrations. During ageing, treatment effects on colour became less pronounced, whereas differences in volatiles and mouthfeel-related compounds persisted. Chitosan-treated wines showed lower mannoproteins and ethyl lactate. GSH-IDY treatments showed higher FAAs and mannoproteins but reduced diacetyl, and SO₂ preferentially preserved more acetate esters. Sensory evaluation showed that the control wines added with SO₂ had stronger buttery and toasted characters, whereas GSH-IDY treatments, particularly the GSH-IDY applied with reduced SO₂, showed greater bitterness and longer finish. These sensory differences are associated with treatment-dependent changes in FAAs, mannoproteins and volatile compounds.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>GSH-IDY and chitosan influenced Chardonnay wine composition and sensory attributes in treatment-specific ways during lees ageing and bottle ageing, which may not fully replace SO₂ but may provide useful tools for modulating wine style under reduced-SO₂ conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Significance of the Study</h3>\u0000 \u0000 <p>These findings provide practical insights into the use of SO₂ alternatives during Chardonnay lees ageing and highlight the importance of additive selection according to the intended wine style.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/6490904","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dormancy in Grapevine Cultivars Across Various Pruning Treatments in the Mediterranean Region of Israel","authors":"Nishika Darkal,&nbsp;Noa Ohana-Levi,&nbsp;Noa Haim,&nbsp;Sarel Munitz,&nbsp;Yair Hayat,&nbsp;Yishai Netzer","doi":"10.1155/ajgw/3715524","DOIUrl":"https://doi.org/10.1155/ajgw/3715524","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background and Aims</h3>\u0000 \u0000 <p>Dormancy in grapevines (<i>Vitis vinifera</i>) is a critical adaptive strategy that enables vines to survive harsh winter conditions and is influenced by physiological and environmental factors. This study aimed to investigate the progression of endodormancy across different pruning dates and cultivars and to identify the key meteorological and agrotechnical factors influencing dormancy depth.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods and Results</h3>\u0000 \u0000 <p>Seven cultivars (Cabernet Sauvignon, Carignan, Chardonnay, Merlot, Petit Verdot, Shiraz and Tempranillo) were subjected to four pruning dates (e.g., sampling treatments: December, January, early February and late February) over 4 years (2021–2024). Single-node cuttings from each treatment were placed under controlled growth conditions (14-h light, 23°C) for dormancy assessment. Dormancy levels reduced with time and subsequent pruning treatments, with cultivar-specific variations. Tempranillo and Petit Verdot displayed deeper dormancy, while Chardonnay and Carignan exhibited an earlier dormancy release. Shiraz showed the least variation across dates, and Merlot had minimal seasonal fluctuations. A random forest model incorporating temporal and meteorological features identified temperatures &gt; 25°C, vapour pressure deficit (VPD) and chill units (CU) as the most influential meteorological factors for dormancy fluctuations, with relative contributions of 10.7%, 9.7% and 7.9%, respectively. Warm winter conditions in 2024 were associated with shallower dormancy (&lt; 25%), particularly in Tempranillo and Petit Verdot during December, followed by an unusual deeper dormancy state (&gt; 95%) during January in several cultivars.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Variable dormancy depth was observed across different cultivars and seasons. Meteorological factors, particularly temperature, VPD and CU, influence the dormancy depth, with clear cultivar-specific differences.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Significance of the Study</h3>\u0000 \u0000 <p>This study provides insights into cultivar-specific dormancy depth with the relative influence of meteorological factors.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/3715524","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148381120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenology, Yield, and Fruit Composition of Diverse Grapevine Varieties","authors":"Lilith Weissflog,&nbsp;Patrick Pascal Lehr,&nbsp;Heiko Bastian,&nbsp;Victoria Goedde,&nbsp;Karsten Niehaus,&nbsp;Nikolaus Merkt,&nbsp;Christian Zörb","doi":"10.1155/ajgw/6962275","DOIUrl":"https://doi.org/10.1155/ajgw/6962275","url":null,"abstract":"<p>Physiological diversity in grapevines is a key resource for developing climate-resilient varieties that exploit a broad spectrum of adaptive traits and help maintain wine quality under changing environmental conditions. In this regard, more than 50 grapevine varieties from a repository of historic and fungus-resistant varieties traditionally grown in Central Europe were evaluated. Across two vintages, traits including yield, 100-berry weight, berry composition such as organic acids, must pH, free amino acids, and mineral cations in the must were assessed. Overall, the varieties displayed substantial physiological and biochemical diversity in berry must. Variation in bud break timing was lower than that observed for flowering and veraison, indicating that phenological differentiation relevant for ripening occurs mainly after flowering. Several late-veraison varieties were identified. Yield and berry weight varied up to 19-fold, with some varieties showing high or low productivity, while others demonstrated greater yield stability. Amino acid profiling revealed a 27-fold variation, largely driven by proline accumulation in berry must, which functions not only as a nitrogen reservoir but also as a heat- and drought-related osmoprotectant. Mineral analysis confirmed potassium as the dominant cation across all samples. Overall, varietal performance and adaptation were closely linked to functional traits such as ripening speed, yield stability, nitrogen partitioning, and potassium regulation. No consistent patterns emerged when varieties were grouped by historical origin or breeding background. These findings highlight the value of grapevine diversity as a resource for understanding functional trait variation and for guiding the selection of resilient genotypes suited to future viticultural challenges.</p>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/6962275","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148381121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multivariate Climate Analogues for Australian Viticulture Regions Under Climate Change","authors":"Kathiana A. Luk,&nbsp;Andrew J. Dowdy","doi":"10.1155/ajgw/3198005","DOIUrl":"https://doi.org/10.1155/ajgw/3198005","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Background and Aims&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Climate is important to consider for viticulture, including its influence on grape development, yield and wine quality. The climate has already changed and is projected to change further into the future, so there is a need to understand these changes for viticulture regions. New methodologies and datasets are used here for insight into the climatology of five Australian viticulture regions, including observed changes over recent decades and projected future changes. Regions examined here are Barossa Valley (South Australia), Hunter Valley (New South Wales), Margaret River (Western Australia), Yarra Valley (Victoria) and Tamar Valley (Tasmania).&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Methods and Results&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;A multivariate climate analogue method is used based on growing season temperature (GST) and growing season rainfall (GSR). This method identifies locations that have similar recent conditions (for 1980–2019) to those of an earlier period (1940–1979), analysed individually for each viticulture region. Results based on observations show these analogue areas are to the south, or at nearby higher elevations, from each of the five regions. This method is also applied to identify future locations projected to have similar climate conditions to those of the earlier time period. Future projections are obtained from a dataset comprising of multiple regional climate models (RCMs), based on a global warming level (GWL) of 1°C above the recent period 1980–2019. The future projections indicate analogue areas shifting further away from current viticulture regions, generally shifting in a similar direction to the observed changes, but with a larger magnitude spatial displacement.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Conclusions&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;These findings provide insight into how climate change has already influenced viticulture regions and how this could be projected to change further in the future. Differences between regions, such as analogue regions shifting southward or to higher elevations, highlight a need to consider climate adaptation strategies tailored to local conditions.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Significance of the Study&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;This study uses a novel multivariate analogue method based on observations, as well as an ensemble of bias-corrected RCMs, complementary to previous studies that typically use global models or a single regional modelling approach. The results provide new insight into how climate conditions are shifting for viticulture regions, including revealing spatial details on how these shifts vary between regi","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/3198005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148324400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Free Precision Viticulture Tool for Identifying Representative Sampling Zones and Estimating Yield Using Smartphone","authors":"Salvatore Filippo Di Gennaro,&nbsp;Riccardo Dainelli,&nbsp;Leandro Rocchi,&nbsp;Piero Toscano,&nbsp;Giorgia Orlandi,&nbsp;Luca Pietrantuono,&nbsp;Najwane Hamie,&nbsp;Alessandro Matese","doi":"10.1155/ajgw/8612863","DOIUrl":"https://doi.org/10.1155/ajgw/8612863","url":null,"abstract":"<p>Viticulture, spanning over 7.3 million hectares worldwide, is a key economic sector that is increasingly challenged by labor shortages, rising production costs, market competition, and climate change. Addressing these issues requires monitoring the spatial and temporal variability in vineyard productivity. Traditional ground-based observations, though accurate, are time-consuming and limited in scope. Precision viticulture offers efficient, nondestructive monitoring tools by leveraging technologies such as GPS, remote sensing, and artificial intelligence. This study aims to develop and test a technological workflow using the mobile app DIGIVIT, integrated with the AgroSat platform, to estimate yield variability in vineyards. The workflow was performed during the 2023 and 2024 growing seasons in a series of vineyards near Siena (Italy) and involved two main steps: (1) spatial variability characterization using AgroSat and (2) yield estimation using the mobile DIGIVIT app. AgroSat processed Sentinel-2 NDVI data to identify homogeneous zones, while DIGIVIT used smartphone images of grape clusters to estimate the yield. Field campaigns were conducted 3 weeks before harvest to monitor representative vines within the identified zones and upload georeferenced images for cluster segmentation analysis. Validation of yield estimates against measured weights revealed a strong linear correlation (<i>R</i>² = 0.91, RMSE = 41.18 g), which improved following the exclusion of a single outlier (<i>R</i>² = 0.95, RMSE = 29.97 g). Vineyard-level yield predictions were compared with harvest data, resulting in overall error of 13.77% (2023) and 14.69% (2024), aligning with previously reported methods. The study demonstrates that the DIGIVIT app provides accurate, timely yield prediction, supporting farmers in harvest planning and winemaking management. The user-friendly mobile app approach facilitates a broader adoption of precision viticulture technologies among farmers, overcoming barriers related to technical expertise.</p>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/8612863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148324394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Temperature Rehydration of Active Dry Wine Yeasts: Nutrient Effects on Fermentation Performance and Membrane Fluidity","authors":"Elisa Aiello,&nbsp;Mattia Pia Arena,&nbsp;Carlo Montanini,&nbsp;Andrea Pulvirenti,&nbsp;Maria Gullo","doi":"10.1155/ajgw/7226681","DOIUrl":"https://doi.org/10.1155/ajgw/7226681","url":null,"abstract":"<p>Active dry yeast rehydration is a critical step in winemaking, as suboptimal temperatures can impair membrane recovery and compromise fermentation performance. This study evaluated the effects of rehydration at 20°C on commercial <i>Saccharomyces cerevisiae</i> and <i>Torulaspora delbrueckii</i> strains and assessed the efficacy of two commercial rehydration nutrients on fermentation kinetics and membrane fluidity. Results showed that both nutrients enhanced early fermentation in <i>S. cerevisiae</i> strains, with increased CO₂ production after 24 h, whereas <i>T. delbrueckii</i> showed no significant response. Membrane fluidity analysis revealed that yeast cells rehydrated at 20°C exhibited high Laurdan generalized polarization (GP) values, indicating increased lipid order, which significantly decreased after 24 h of fermentation. FERMOPLUS Energy Glu 4.0 was associated with lower initial GP values and reduced variation between postrehydration and postfermentation measurements, suggesting a membrane-stabilizing effect that may help optimize rehydration protocols in commercial winemaking.</p>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2026 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/ajgw/7226681","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148324393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}