Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 70 for “"viticulture"”.
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Geographic Analysis of Viticulture Potential in Virginia
… regions across the state in terms of their viticulture potential, a study area was chosen from within the highest ranking region. This study area was the focus for the local-scale site potential analysis. First, to delineate regions across Virginia that had greater or lesser viticulture …
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Applications of computer vision techniques in precision viticulture
Precision viticulture is a technique that aims at improving grapevine production and quality while reducing the environmental impact by optimising resource use. For its implementation, the correct, georeferenced, precise measurement of the vine status which represent the inter- and intra-field …
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Computer visión and artificial intelligence for yield components' assessment in digital viticulture
… estimate relevant parameters in agriculture and viticulture. The main goal of this PhD Thesis is to provide new tools in digital viticulture that combine computer vision and artificial intelligence towards yield components’ estimation under field conditions. In particular, the following …
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Assessing seasonal forecast use in Western Cape viticulture: a risk framework approach
Viticulture refers to the practice of cultivating grapevines for winemaking. With a rapidly changing climate and rising global temperatures, this type of farming is under significant threat. Seasonal forecasts (SF) offer the potential to reduce farmer's vulnerability to climate risks by offering …
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ANALYSIS OF THE ECONOMIC AND ENVIRONMENTAL BENEFITS OF PRECISION VITICULTURE. A CASE STUDY FROM MONTEFALCO SAGRANTINO DOCG
The concept of terroir is fundamental for viticulture, as it highlights the connection between soil, climate, and human intervention, as well as the role each of these factors plays in wine production. This concept is particularly important for high-quality wines, which are closely associated with …
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Functional Study of Lipoxygenase-mediated Resistance to Fungal Pathogens in Maize for Milk-chain Safety and in Grapevine for Sustainable Viticulture
Fungal pathogens present a big concern in grapevine and maize production worldwide. Powdery mildew, a disease caused by an obligate biotroph, Erysiphe necator (En) is the most important fungal disease affecting grapevines, whereas. mycotoxin contamination of maize by Aspergillus flavus (Af) and …
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Effect of an alternative viticulture on native entomopathogenic nematodes and other organisms linked to their soil food web in DOCa Rioja vineyards
… are needed to achieve more sustainable viticulture. We hypothesized that alternative strategies to tillage for soil management and the release of agrochemicals for pests, diseases, and weed management, such as cover cropping, mulching, and organic farming, would favor the native EPN …
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Assessment of the spatial variability of vegetative status in vineyards using non-destructive sensors: Application of remote and proximal sensing technologies in precision viticulture
… spatial and temporal variability in precision viticulture requires a large amount of data. Traditional methods are not suitable, as they are time and labour demanding, making the analysis of a high number of samples at different timings not feasible. For this purpose, remote and proximal …
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Economic aspects of the development of the South African wine industry in the twentieth century
… way in which the foundations of South African viticulture were laid. One of the main points emerging from a study of the early years of South African viticulture is that the quality of the wines and brandy produced, at the turn of the century, was low and far inferior to that of European wines …
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Artificial Intelligence in Digital Agriculture. Towards In-Field Grapevine Monitoring using Non-invasive Sensors
… and sustainability. To achieve this in digital viticulture, useful information about the vineyard is necessary so better decisions can be taken. Advances in non-invasive sensing technologies allow the acquisition of high amounts of data from the vineyard, but these data alone are not enough to …
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A case study investigation of the learning needs of the Niagara grape and wine community
… no prior practical experience in grape growing (viticulture) or winemaking (oenology) has created a need for additional training and learning opportunities to meet workforce needs. This case study investigated the learning needs of the members of this community and how these needs are currently …
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A wine estate on Keuka Lake: private teaching and public touring
… this estate includes a teaching center for viticulture, allowing continual vineyard experimentation. The public is encouraged to tour the estate, and is courted with a restaurant and tasting facility. Over a five year period, 50 acres of vineyards on the 200 acre property would be phased in, …
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Impact et suivi de la variabilité climatique sur la production viticole dans le sud du Québec à l’aide de la télédétection hyperspectrale
Au Québec, la viticulture commerciale ou artisanale n’a que 35 ans. Cependant, le Québec est soumis à de nombreuses pressions climatiques comme la présence de gel hâtif à l’automne et tardif au printemps. La période de croissance (la différence entre le dernier gel au printemps et le premier gel à …
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Impacts of climate change on wine grape farming in the Western Cape: Implications for adaptation
… of weather patterns, climate and its impacts on viticulture, their willingness to engage in adaptive strategies differed. Particularly, those who had already experienced severe negative impacts on wine production ( as a result of extreme weather) were more willing to currently explore adaptation …
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Impact assessment of different agricultural practices in grapevine soil and must microbiota
Viticulture, an agricultural activity of great economic, social and cultural relevance, currently faces challenges that compromise its viability, such as climate change, soil degradation, biodiversity loss and the environmental impact of conventional practices. In this context, the microbiota …
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The Application of Chaos Game Representations and Deep Learning for Grapevine Genetic Testing
… crop quality, etc., is an important component of viticulture. True-to-type identification has proven to be very critical and yet very challenging for grapevine due to the existence of a large number of cultivars and clones and the historical issues of synonyms and homonyms. DNA-based …
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Genetic Engineering of 2,4-D Resistance in Wine Grapes
There is an emerging and fast-growing viticulture industry in Illinois and the greater Midwestern U.S.A. However, one of the greatest factors limiting the establishment of vineyards in this region is the widespread use of 2,4-D, an effective herbicide used in the control of broadleaf weeds in grain …
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Robotics Application in Precision Spraying
… management, addressing challenges in both viticulture and turfgrass management. The first topic of this thesis introduces the Adaptive Crop Load Estimation (ACLE) method, a deep learning-based grape counting approach designed to alleviate the need for extensive annotated datasets. By …
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Modest Differences in Juice Yeast Assimilable Nitrogen Concentration and Composition Influence Wine Chemistry and Impart Limited Sensory Differences in Virginia-grown Chardonel
… Chardonel, obtained from a multi-year viticulture study evaluating the impact of nitrogen fertilizer on grapevines. The objective of this work is to determine if vineyard treatments resulted in sufficient juice YAN profile differences to impart chemical and/or sensory differences in …
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