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 19 of 19 for “"apple orchard"”.
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Artificial Intelligence-Based Decision Automation for Apple Orchard Thinning
Aotearoa New Zealand is a leading apple producer and is projected to export NZ$ 2 billion worth of high-quality pip fruit by 2030. Apple thinning is essential to quality but is also seasonal, leading to a high demand for skilled labour. However, labour shortages have been experienced globally due …
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Moving beyond the apple orchard: The institutional analysis of the construction of Washtenaw Community College
<p>The purpose of the study was to understand the institutional forces that constructed and shaped the function, nature of funding, and governance of Washtenaw Community College (WCC). To do this, I studied the founding and development of WCC using organizational theory. This qualitative, …
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Groundcover Management System and Nutrient Source Impact Physical Soil Quality Indicators in an Organically Managed Apple Orchard
… of a newly established, organically managed apple (Malus x domestica Borkh.) orchard. Annual applications of municipal green compost (GC), shredded office paper (SP), wood chips (WC), and mow-blow (MB) grass mulch were utilized as GMS, and NS supplied to trees were from composted poultry …
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The Effects of Rootstock Selection and Carbon-based Fertility Amendments on Apple Orchard Productivity and Soil Community Ecology
In apple (Malus domestica Borkh.) orchards, rootstock genotype, and soil fertility management practices impact soil fertility, plant associated soil microbial communities, and orchard productivity. Apple growers select rootstocks to confer beneficial traits, including size control, precocity, and …
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Genetic Variation Within and Between Populations of Drosophila Melanogaster
… of Drosophila melanogaster in an experimental apple orchard was monitored in 1976 and 1977. In 1977 two additional populations of D. melanogaster were also examined.
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Bioenergetics and nutrition of the pine vole (microtus pinetorum) in two Virginia apple orchards
… by voles from the maintained and abandoned apple orchard. The highest digestibilities coincided with the maturation of the apple crop. The quantity of primary production available during the winter was lowest of all seasons. It was estimated that the amount of primary production available to …
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Yield estimation and smart harvesting for precision agriculture using deep learning
… than 90% accuracy on a real video footage of apple trees collected by a drone from an apple orchard and approximately 94% accuracy for pumpkin counting from an aerial drone footage.
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The influence of pheromone dispenser release rates, trap height and pheromone dispenser height on captures of leafrollers in Virginia apple orchards
… codling moth for the entire season in Virginia apple orchards. Ecogen and Hercon leafroller dispensers lasted for a shorter time than the codling moth dispensers and would require two applications per season to provide the best control of their target pests. In a commercial northern Virginia …
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A bioenergetic simulation model of orchard populations of the pine vole (Microtus pinetorum)
A mechanistic model was developed. to simulate apple orchard populations of the pine vole (Microtus pinetorum) in southwest Virginia. Population. size and demographic parameters were modeled on a weekly basis as functions of bioenerqetic status. Forage gross energy availability, digestibility, …
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Photoperiod and nutritional influences on reproduction, growth and pelage changes in the pine vole
Apple drops were removed from a portion of an apple orchard in September and apples left available in the remainder of the orchard. Presence of apples had little effect on the immature:adult ratio or on body weight. However, adult males and juveniles of both sexes had higher values for reproductive …
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Assessing natural and management-induced patterns of herbicide sorption and risks in catchments: a soil landscape modeling approach.
… of herbicides in an intensively managed orchard system. The questions for this thesis were: a) How can contour-derived digital elevation models be enhanced? b) To what extent do topographic and management factors influence the distribution of soil properties in an apple orchard? c) How do …
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Effects of Cover Crop Treatments on Apple Trees
… affect soil quality and health and thereby orchard growth and productivity. There have been few studies in the southern US on the effects of managed drive-rows using cover crops as part of a sustainable apple orchard management system. A field study used treatments of 1) seasonal legumes …
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Effects of anthropogenic change on interactions between North American tephritid flies and their biotic associates
… fruits as its host. After the introduction of apples, a fruit larger than hawthorn berries, to North America by humans, R. pomonella made a host shift to apples, which provide a partial escape from natural enemies and competitors. Similarly, Z. electa made a host shift from native horsenettle, …
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DISPERSAL GRADIENTS AND DEPOSITION EFFICIENCY OF VENTURIA INAEQUALIS ASCOSPORES AND THEIR RELATIONSHIP TO LESION DENSITIES (APPLE SCAB DISEASE, SPORE DISPERSAL, TRAPPING)
… sp spores from a point source was examined in an apple orchard. Twenty-five volumetric spore traps were constructed, and a system developed that governed intervals of trap operation by leaf wetness. The estimated inoculum density was equal to several unsprayed trees, much greater than inoculum …
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The application of the surface energy balance system model to estimate evapotranspiration in South Africa
… with eddy covariance data measured in a large apple orchard (11 ha), in the Piketberg area of the Western Cape. Due to the relative infancy of research in this field in South Africa, SEBS is an attractive model choice as it is available as open-source freeware. The model was found to …
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An efficient process to designing robotic end effectors for high value crops: Application on robotic apple fruitlet thinning
… implemented to develop robotic end effectors for apple fruitlet thinning. The design requirements for thinning fruitlets to 1 or 2 fruitlets from a cluster were identified after consultation with growers and a visit to the apple orchard. Nine concepts were generated and preliminarily tested in the …
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Plant-insect interactions between female dogwood borer and apple
… shown by mated female dogwood borer in an apple orchard was characterized and quantified and the diel periodicity with which those behaviors occurred was determined. Mated females were easily recognized, based on their characteristic casting flight directed toward areas below the graft …
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THE ORCHARD AND ITS DWELLERS: PATHWAYS FOR RECONCILING NATURE CONSERVATION WITH INTENSIVE AGRICULTURE IN THE NON VALLEY APPLE DISTRICT, NORTHERN ITALY
L’agricoltura moderna sta affrontando la sfida globale di sfamare la crescente popolazione umana e contemporaneamente ridurre drasticamente il suo impatto ambientale. Fino ad ora, l’intensificazione agricola è avvenuta a discapito dei sistemi naturali, comportando un declino globale della …
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Apple orchards feed and contaminate bees during, but even more so after bloom
… impacting their health. Many crops like apples, peaches, and cherries that add diversity and nutrition to our diet are wholly or partially dependent upon the pollination services of insects. Orchard crops are self-incompatible and commonly regarded as crops reliant on the pollination …