Australian Journal of Grape and Wine Research最新文献

{"title":"Techno-Economic Feasibility of Solar Water Heating Systems in the Winemaking Industry","authors":"José L. García,&nbsp;Fátima Baptista,&nbsp;Alicia Perdigones,&nbsp;Juan Lizcano,&nbsp;Fernando R. Mazarrón","doi":"10.1155/2024/6686122","DOIUrl":"10.1155/2024/6686122","url":null,"abstract":"<div>\u0000 <p>The present work analyzes the feasibility of using solar water heating systems (SWHS) to supply the hot water required in the winemaking industries. The hot water demand of the sector was characterized by selecting patterns that encompass the wide range of existing casuistry. After determining the production potential of the SWHS by using an experimental system, 22500 energy simulations were carried out, combining different locations, energy prices, and prices of the necessary investment. The results demonstrate that the seasonality and irregularity of a winery’s demand pattern drastically condition the viability and profitability of SWHS. In wineries with high demand, which are relatively uniform throughout the year, the solar system with optimized design achieves energy consumption reductions between 32% (low radiation) and 52% (high radiation), with payback between 4.3 and 7.2 years. On the other hand, in wineries with highly seasonal consumption, SWHS are not profitable even in very favorable cases.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2024 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/6686122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140483138","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":"Impact of Cluster Thinning on Wine Grape Yield and Fruit Composition: A Review and Meta-Analysis","authors":"Joshua VanderWeide,&nbsp;Esmaeil Nasrollahiazar,&nbsp;Steve Schultze,&nbsp;Paolo Sabbatini,&nbsp;Simone Diego Castellarin","doi":"10.1155/2024/2504396","DOIUrl":"10.1155/2024/2504396","url":null,"abstract":"<div>\u0000 <p>For wine grape producers, achieving an optimal balance between vegetative and reproductive growth is a key factor in producing high quality fruit and meeting production quotas. This balance is often measured as the leaf-area-to-yield ratio. To increase this ratio, producers often use “cluster thinning” (CT), a management practice involving a selective removal of grape clusters from vines. Despite this, no consensus has been established regarding the optimal CT timing and severity for consistently improving fruit composition. The objective of this work was to identify whether CT “timing” (bloom, pea-size, lag phase, and veraison) or “severity” (15–35%, 36–55%, and 56–75%) influences yield and fruit composition. To achieve this objective, a meta-analysis of 160 publications on CT in grape was reduced to 78 studies via 10 data curation steps. We reported the influence of CT timing and severity on yield and fruit composition, as well as their impact on the yield-fruit composition tradeoff. First, CT timing showed little influence on fruit composition, which provides producers with greater flexibility when using this practice. Second, CT severity was impactful on improving fruit composition (TSS and pH); only the moderate range (36–55%) was effective. In conclusion, wine grape composition is more influenced by CT severity than timing. This work has important implications for grape producers and their approach to improving grape composition.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2024 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/2504396","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139601021","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":"Weather Variables for Within-Vineyard Awareness of Botrytis Risk","authors":"K. J. Evans,&nbsp;A. J. G. Pirie","doi":"10.1155/2024/6630039","DOIUrl":"10.1155/2024/6630039","url":null,"abstract":"<div>\u0000 <p><i>Background and Aims</i>. Botrytis bunch rot (BBR) in cool temperate climates is a key constraint to the consistent supply of grapes to winery specifications. BBR severities have been correlated with specific environmental conditions; however, data-driven applications intended to support crop protection decisions are restricted in access and/or of unknown commercial value. The aims of this study were to evaluate variables providing within-vineyard awareness of BBR risk in Riesling vines. <i>Methods and Results</i>. Descriptors of BBR epidemics from eight site years, 2009–2014, were developed for vine areas of ∼0.5 ha within two regions of Tasmania with different climates. Two variables using the daily Bacchus index, from crop stage E-L 19 to E-L 31 or 34, accounted for &gt;80% of the variance in the final mean BBR severity. A BBR risk index (BBR-I), incorporating the mean daily Bacchus index from E-L 19 to E-L 31 and the median daily vapour pressure deficit of air at 15 : 00 during the late-season interval, accounted for up to 99.5% of the variance in the final mean BBR severity. The late-season interval (days) or median daily RH (%) at 15:00 in the same period accounted for 86.4 or 83.3% of the variance. Spatial variability of BBR severity mapped in 4.8 ha of Sauvignon Blanc in 2018-19 confirmed the need to apply BBR risk indicators at an appropriate spatial scale. <i>Conclusions</i>. Environmental variables with biological relevance served as indicators of BBR risk at the study sites and have the potential to discriminate BBR risk among production regions in Tasmania. <i>Significance of the Study</i>. Study findings are expected to support the development of applications that raise awareness of BBR risk at an appropriate spatial scale for in-season adaption of crop protection, diagnosis of crop protection efficacy, and/or site selection decisions. Accompanying formulae with sample data in Microsoft® Excel will support transitions to automated data analyses.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2024 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/6630039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139600987","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":"Climate Change Affects Choice and Management of Training Systems in the Grapevine","authors":"Filippo Del Zozzo,&nbsp;Stefano Poni","doi":"10.1155/2024/7834357","DOIUrl":"10.1155/2024/7834357","url":null,"abstract":"<div>\u0000 <p>Although vertical shoot positioned (VSP) training systems, either cane- or spur-pruned, are adopted in the great majority of the vineyards worldwide, the lianas nature of the grapevine and the presence of long and flexible canes confer high plasticity and render structural and pruning changes quite easy. The focus of this review is if, in light of the most consistent features triggered by global warming (e.g., longer growing season, earlier phenology, faster ripening, higher incidence of overheating stress and sunburn, higher frequency of extreme weather events), the type and management of training systems should also be reconsidered. We surveyed the main methods to assess training system efficiency and the current attempts and outlook toward exploiting the training system as an adaptation tool to climate change. For the latter, we considered 12 main trellis types and scored them based on climate-related features and general traits such as vigor, yield control, susceptibility to fungal diseases, and suitability according to wine types (still or sparkling). The resulting balance of positive and negative recommendations leads to a re-evaluation of either old, nonmechanizable trellis types (e.g., Raggi-Bellussi and pergola types), divided canopy systems (e.g., GDC and Scott Henry) or, among the single canopy types, of the single high wire (SHW) trellis. However, historical systems traditionally used by best regions and producers (e.g., goblet and VSP either cane- or spur-pruned) overall show less adherence to the chosen evaluation criteria. To direct future evolution of training systems, regardless of the broadly shared need for suitability to partial or full mechanization, the scenario looks different depending on cool and temperate (warm) areas. The former experiences an outburst of interest as warming is broadening growing areas and affordable genotypes. Under such circumstances, training systems should help accelerate or favor the ripening process through vigor control and lower yield, better cluster exposure, and nonlimiting leaf area-to-fruit ratio. Whereas, in warm areas that are now becoming sub-tropical areas in the worst cases, the SHW gains credit as compared to goblet and traditional VSP. The latter requires an increasing number of canopy manipulations and a rethinking of some planting choices to accommodate the needs of slower and more delayed ripening, more cluster shading, and higher cordons, the latter reducing the probability of incurring significant frost damage.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2024 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/7834357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139387728","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":"From Roots to Leaves: Understanding Consumer Acceptance in Implementing Climate-Resilient Strategies in Viticulture","authors":"Giuseppe Di Vita,&nbsp;Giovanbattista Califano,&nbsp;Maria Raimondo,&nbsp;Daniela Spina,&nbsp;Manal Hamam,&nbsp;Mario D’Amico,&nbsp;Francesco Caracciolo","doi":"10.1155/2024/8118128","DOIUrl":"10.1155/2024/8118128","url":null,"abstract":"<div>\u0000 <p>This study investigates consumer perceptions and acceptance of innovative strategies implemented to counter the effects of climate change in the wine industry. The acceptance of wines derived from grapes grown using four different vineyard management practices—kaolin application, use of plant growth regulators, introduction of resilient rootstocks, and fungus-resistant grape varieties (PIWI)—is analyzed. Utilizing a latent profile analysis, the study identifies five distinct consumer profiles, each displaying unique sensitivities and perceptions towards climate change threats. The findings reveal notable variations in consumers’ willingness to accept these innovations. Additionally, the study offers insights into how these preferences influence the marketability of wines produced using these innovative techniques. The overall results depict heterogeneous acceptance of these practices. Consumers seem more inclined to choose wines derived from vines with innovative rootstocks and those treated with kaolin. The acceptance for PIWI varieties and PGR is comparatively marginal. The outcomes of this study provide valuable insights for winegrowers, policymakers, and other industry stakeholders on effectively implementing and communicating these solutions. Overall, the research findings contribute significantly to understanding consumer behavior within the context of climate change in the wine industry, presenting substantial implications for sustainable viticulture practices and wine marketing strategies.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2024 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8118128","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139390474","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":"Benchmarking Water-Limited Yield Potential and Yield Gaps of Shiraz in the Barossa and Eden Valleys","authors":"Marcos Bonada,&nbsp;Paul R. Petrie,&nbsp;Vinod Phogat,&nbsp;Cassandra Collins,&nbsp;Victor O. Sadras","doi":"10.1155/2023/5807266","DOIUrl":"10.1155/2023/5807266","url":null,"abstract":"<div>\u0000 <p><i>Background and Aims</i>. Vineyard performance is impacted by water availability including the amount and seasonality of rainfall, evapotranspiration, and irrigation volume. We benchmarked water-limited yield potential (Yw), calculated yield gaps as the difference between Yw and actual yield, and explored the underlying environmental and management causes of these gaps. <i>Methods and Results</i>. The yield and its components in two sections of 24 Shiraz vineyards were monitored during three vintages in the Barossa zone (GI). The frequency distribution of yield was L-shaped, with half the vineyards below 5.2 t·ha⁻¹, and an extended tail of the distribution that reached 24.9 t·ha⁻¹. The seasonal ratio of actual crop evapotranspiration and reference evapotranspiration was below 0.48 in 85% of cases, with a maximum of 0.65, highlighting a substantial water deficit in these vineyards. A boundary function relating actual yield and seasonal rainfall was fitted to quantify Yw. Yield gaps increased with an increasing vine water deficit, as quantified by the carbon isotope composition of the fruit. The yield gap was smaller with higher rainfall before budburst, putatively favouring early-season vegetative growth and allocation to reproduction, and with higher rainfall between flowering and veraison, putatively favouring fruit set and berry growth. The gap was larger with higher rainfall and lower radiation between budburst and flowering. The yield gap increased linearly with vine age between 6 and 33 yr at a rate of 0.3 t·ha⁻¹·yr⁻¹. The correlation between yield gap and yield components ranked bunch weight ≈ berries per bunch &gt; bunch number &gt; berry weight; the minimum to close the yield gap was 185,000 bunches ha⁻¹, 105 g bunch⁻¹, 108 berries bunch⁻¹, and 1.1 g berry⁻¹. <i>Conclusions</i>. Water deficit and vine age were major causes of yield gaps. Irrigation during winter and spring provides an opportunity to improve productivity. The cost of dealing with older, less productive vines needs to be weighed against the rate of increase in yield gap with vine age. <i>Significance of the Study</i>. A boundary function to estimate water-limited yield potential returned viticulturally meaningful yield gaps and highlighted potential targets to improve vineyard productivity.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2023 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5807266","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134991334","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":"Is Airborne 2,4,6-Trichloroanisole (TCA) a Threat for Bottled Wine?","authors":"Andrii Tarasov,&nbsp;Rainer Jung","doi":"10.1155/2023/6637804","DOIUrl":"10.1155/2023/6637804","url":null,"abstract":"<div>\u0000 <p><i>Background and Aims</i>. This work investigated the TCA permeability of twelve types of commercial bottle closures during 24 months of bottle storage in the <i>d</i>_<i>5</i>-TCA-contaminated atmosphere: medium pollution (max. ∼50 ng/L of <i>d</i>_<i>5</i>-TCA in the air) and high pollution (max. ∼500 ng/L of <i>d</i>_<i>5</i>-TCA in the air). <i>Methods and Results</i>. The <i>d</i>_<i>5</i>-TCA content of wine samples and bottle closures was monitored by GC-MS analysis, and the closures of one group (comprising natural corks, agglomerated stoppers, and BVS Tin Saran™ screw caps) were found to be excellent barriers against airborne <i>d</i>_<i>5</i>-TCA, i.e., no contaminant was detected in wine under any storage conditions. In contrast, a second group of closures (synthetic stoppers with low OTR, BVS Saranex™, and plastic body screw caps) allowed permeation of <i>d</i>_<i>5</i>-TCA, polluting the wine when air contamination was high, albeit no <i>d</i>_<i>5</i>-TCA was detected in wines following storage under medium air contamination conditions. A third group of closures (synthetic stoppers with medium and medium + OTR, MCA screw caps, and glass stoppers) allowed <i>d</i>_<i>5</i>-TCA to accumulate in wine under both medium and high contamination environments. <i>Conclusions</i>. Some commercial bottle closures were found to permeate airborne <i>d</i>_<i>5</i>-TCA, thereby contaminating bottled wine under certain storage conditions. <i>Significance of the Study.</i> This work provides the wine industry with insight into the potential for postbottling contamination of wine by airborne TCA.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2023 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6637804","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136283769","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":"Exploring Consumer and Producer Views of Verjuice: A Grape-Based Product Made from Viticultural Waste","authors":"Amanda Dupas de Matos,&nbsp;Robyn Maggs,&nbsp;Joanne Hort","doi":"10.1155/2023/5548698","DOIUrl":"10.1155/2023/5548698","url":null,"abstract":"<div>\u0000 <p>The wine sector is actively working to add value, increase sustainability, and reduce waste streams. One great example is to use thinned grapes, that are usually left to rot, to make verjuice. As verjuice has no identity standard, there is a wide scope for producers to innovate. Decisions regarding sensory characteristics and packaging are currently made by the verjuice producers, mainly winegrowers and winemakers but also chefs, without fully understanding the needs and wants of consumers. Using discussion groups and interviews, this study explored both consumer and producer views towards commercial verjuice regarding perceived sensory characteristics, possible end-uses, packaging, and desirable label elements. Similarities and differences were discovered between consumer views and verjuice producer practices. Consumers reported a diverse range of attributes beyond the sourness and sweetness that was the focus of producers, indicating potential for a broader range of applications of verjuice than currently considered. Sweeter variants were generally preferred for drinking, while sourer ones were favoured for cooking, although exceptions to this trend existed across consumers. Additionally, a mismatch between producer packaging choices and consumer preferences was identified, highlighting potential for producers to optimise packaging to better cater to consumer needs. This research explored an opportunity to create verjuice with desirable sensory characteristics for specific end-uses, providing product diversification for the wine industry’s revenue stream. Uncovering these consumer insights is key to better inform promotion of verjuice by producers and the agrifood sector seeking to enhance the value of their by-products.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2023 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5548698","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136281510","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":"Performance of Six Genetically Diverse Phylloxera Strains on 5C Teleki (V. berlandieri × V. riparia) Rootstock","authors":"C. W. Clarke,&nbsp;J. Henneken,&nbsp;B. M. Carmody,&nbsp;J. P. Cunningham","doi":"10.1155/2023/2259967","DOIUrl":"10.1155/2023/2259967","url":null,"abstract":"<div>\u0000 <p><i>Background and Aims</i>. Grapevine phylloxera, <i>Daktulosphaira vitifoliae</i> (Fitch), feeds on roots and leaves of <i>Vitis</i> spp<i>.</i> Susceptibility to phylloxera differs among rootstocks, such that <i>Vitis spp.</i> grafted onto resistant rootstocks can safeguard vineyards from phylloxera-induced damage in the long term. Diverse phylloxera genetic strains, however, vary in their ability to survive on different rootstocks. The 5C Teleki rootstock (<i>V. berlandieri</i> × <i>V. riparia</i>) is widely planted worldwide, but its resistance to phylloxera has not been characterised against the genetically diverse phylloxera strains present in Australia. <i>Methods and Results</i>. 5C Teleki roots and <i>Vitis vinifera</i> L. (positive control), either excised in Petri dishes or planted as whole plants in pots, were inoculated with eggs of six phylloxera strains (G1, G4, G19, G20, G30, and G38). On excised roots, G19, G20, G30, and G38 phylloxera survived to reproductive adults. The G1 and G4 phylloxera did not survive past the first instar stage. In potted vines, G4, G19, G20, G30, and G38 phylloxera strains induced nodosities on roots, but adults were only found on roots inoculated with G19 and G20 phylloxera strains. <i>Conclusions</i>. Results showed that 5C Teleki is resistant to the G1 phylloxera and susceptible to G19 strains. Performance of G4, G20, G30, and G38 differs depending on the assay used. 5C Teleki is likely tolerant of these strains. Significance of the study: the 5C Teleki rootstock is resistant to the G1 phylloxera strain but likely tolerant of others present in Australia. This implies that the rootstock can still host a population of phylloxera, and strict farm-gate hygiene should be employed to stop spread among vineyards and regions.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2023 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2259967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135728785","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":"Using a Camera System for the In-Situ Assessment of Cordon Dieback due to Grapevine Trunk Diseases","authors":"Julie Tang,&nbsp;Olivia Yem,&nbsp;Finn Russell,&nbsp;Cameron A. Stewart,&nbsp;Kangying Lin,&nbsp;Hiranya Jayakody,&nbsp;Matthew R. Ayres,&nbsp;Mark R. Sosnowski,&nbsp;Mark Whitty,&nbsp;Paul R. Petrie","doi":"10.1155/2023/8634742","DOIUrl":"10.1155/2023/8634742","url":null,"abstract":"<div>\u0000 <p><i>Background and Aims</i>. The assessment of grapevine trunk disease symptoms is a labour-intensive process that requires experience and is prone to bias. Methods that support the easy and accurate monitoring of trunk diseases will aid management decisions. <i>Methods and Results</i>. An algorithm was developed for the assessment of dieback symptoms due to trunk disease which is applied on a smartphone mounted on a vehicle driven through the vineyard. Vine images and corresponding expert ground truth assessments (of over 13,000 vines) were collected and correlated over two seasons in Shiraz vineyards in the Clare Valley, Barossa, and McLaren Vale, South Australia. This dataset was used to train and verify YOLOv5 models to estimate the percentage dieback of cordons due to trunk diseases. The performance of the models was evaluated on the metrics of highest confidence, highest dieback score, and average dieback score across multiple detections. Eighty-four percent of vines in a test set derived from an unseen vineyard were assigned a score by the model within 10% of the score given by experts in the vineyard. <i>Conclusions</i>. The computer vision algorithms were implemented within the phone, allowing real-time assessment and row-level mapping with nothing more than a high-end mobile phone. <i>Significance of the Study</i>. The algorithms form the basis of a system that will allow growers to scan their vineyards easily and regularly to monitor dieback due to grapevine trunk disease and will facilitate corrective interventions.</p>\u0000 </div>","PeriodicalId":8582,"journal":{"name":"Australian Journal of Grape and Wine Research","volume":"2023 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/8634742","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135883343","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}