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 60 for “"water status"”.
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How Distance from Groundwater Affects the Water Status of Trees at San Marcos Springs
… of landscape topography on karst aquifer freshwater supplies is still poorly understood. To gain perspective on this question, I conducted a study at a site where the depth of a shallow groundwater table was indicated by the water level of a spring-fed lake and the distance of trees from …
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DEVELOPMENT OF INNOVATIVE SENSORS FOR DETECTING THE WATER STATUS OF PLANTS IN PRECISION AGRICULTURE APPLICATIONS
… systems for the direct assessment of plant water status, a key parameter in precision agriculture and sustainable irrigation. The thesis is organized into three main experimental parts, each addressing a different level of plant-based monitoring, from direct leaf sensing to whole-plant …
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Vines of different capacity and water status alter the sensory perception of Cabernet Sauvignon wines
… the effectiveness with which vine capacity and water status could be regulated as well as if they related to fruit quality and wine sensory perception. The treatments regulating vine size and water status were under-trellis groundcover, root manipulation, rootstocks, and irrigation. Treatments …
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Interaction of spatial variability characterized by soil electrical conductivity and plant water status related to generative growth of fruit trees
… Wassernutzungseffizienz (WUEc) und des crop water stress index (CWSI) bezogen auf die Fruchtqualität sowie (iii) eine Möglichkeit zur Einteilung von einzelnen Bäumen hinsichtlich der Bewässerung. Dazu fanden die Hauptuntersuchungen in der Pflaumenanlage statt. Diese Obstanlage befindet sich …
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Water Status, High Temperature, and Genotype Effects on Some Processes Which Influence Maize Seed Set (Zea Mays L., Low Water Potential, Pollen Viability, in Vivo Assay, Stress)
… viability, and pollen production to heat and water stress. These processes are involved in determining kernel number.
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Use of gypsum blocks for measurement of soil water status : A dissertation submitted in partial fulfilment of the requirements for the Diploma of Agricultural Science in the University of Canterbury [Lincoln College]
… tensiometers extends from zero to about 850cm of water. This is only a small fraction of tension range over which soil moisture is available for plant growth, since the wilting percentage corresponds approximately to the 15 atmosphere-percentage. Currently much of the interest in soil moisture is …
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Physiological studies of in vivo and in vitro water requirements and water relations of Chrysanthemum morifolium Ramat
… Ramat. showed a significant reduction in plant water status under both sunny and cloudy conditions in response to depriving them of water. Water potential, osmotic potential, and pressure potential proved appropriate parameters for indicating plant water status. Diurnal changes in water status …
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Using GPS, GIS & remote sensing to understand Niagara Terroir : Pinot noir in the Four Mile Creek & St. David's Bench sub-appellations
The relationships between vine water status, soil texture, and vine size were observed in four Niagara, Ontario Pinot noir vineyards in 2008 and 2009. The vineyards were divided into water status zones using geographic information systems (GIS) software to map the seasonal mean midday leaf water …
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Foliar Herbivory on Understory Oaks as a Function of Forest Type and Prescribed Burning
… I qualitatively related leaf loss to plant water status, leaf nitrogen (N) concentrations, light, and general environmental conditions. The study took place within the Drury Conservation Area, located in Taney County, Missouri. Study sites representing unburned and burned savanna and forest …
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Artificial Intelligence in Digital Agriculture. Towards In-Field Grapevine Monitoring using Non-invasive Sensors
… ensemble data analysis techniques for vineyard water status assessment with thermal imaging; and iii) to deploy hyperspectral imaging in the field, supported by intensive machine learning combinations, for the monitoring of different crop traits. The first objective, covered in Chapter 3, was …
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The effects of cloud moisture on Restions, Ericas and Proteas in the Cape Floristic region
… that the direct wetting of foliage provides a water subsidy to plants of various ecosystem types. In this study, we investigate the presence of foliar uptake, and the effects of misting on the plant water potential of species representing diverse functional types, namely ericoids, proteoids and …
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Dynamic interactions between CO2 efflu, sap flow and internal CO2 concentration in tree stems: implications towards the assessment of actual stem respiration
… as is often claimed, but also on the water status of the stem. If we want to model stem respiration accurately, both temperature and stem water status need to be considered as driving variables.
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Effects of climate and forest management on the water and nitrogen status of European beech regeneration and understorey vegetation
… when grown on limestone-derived soils with low water storage capacity, being common in Central and Southern Europe, are important. Moreover, climate models emphasize the significance of management practices for the adaptation to the expected changes, since they could contribute to the mitigation …
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INVESTIGATION OF THE HYDRAULIC CHARACTERISTICS OF COASTAL REDWOODS THROUGH ANALYSIS OF WATER DYNAMICS
… during the climate change disturbs the global water cycle and harms the earth ecosystem. Because trees provide critical ecosystem services, it is important to understand how they respond to the changing environment to gauge the negative impact of the climate change on the ecosystem. Water is …
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Utilisation of Proximal Sensing Technology to Map Variability in Ontario Vineyards
… could be correlated with soil moisture, vine water status, yield components and grape composition, and whether temporally consistent relationships could be established. The research was carried out on three experimental sites involving two Riesling, two Cabernet franc and two Pinot noir blocks …
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Using spectral signatures as a toolbox for determining crop health status
… based spectral indices to assess plant water status, exploiting water content induced changes in leaf internal structure and subsequent variation in the reflectance of NIR. These indices used visible and NIR wavelengths to allow for a reflectance based assessment of leaf water status …
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The influence of in vitro KCl treatments on the water relations and acclimatization of tissue-cultured Flame Azalea (Rhododendron calendulaceum)
… would improve microshoot stomatal function and water status during acclimatization. The effects of the KCl treatments upon subsequent microshoot rooting and percent fresh weight gain were also evaluated. In preliminary experiments, microshoots of the flame azalea (Rhododendron calendulaceum) …
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