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 287 for “"nutrient availability"”.
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Nutrient Availability from Poultry Litter Co-Products
Phosphorus (P) is a nutrient of concern in the Chesapeake Bay watershed due to nutrient imbalances in areas with confined animal feeding operations. By converting poultry litter to an ash via thermal conversion, nutrients are concentrated and are economical to ship out of nutrient surplus …
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Optimizing nutrient availability for high-yield corn production
… many producers are interested in increasing the availability and effectiveness of their fertilizer applications. Elevated yield levels of modern hybrids require higher amounts of nutrients and management to sustainably produce higher yield levels. Throughout a growing season, there are several …
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The influence of nutrient availability on tumor metabolism
… and progression are profoundly influenced by nutrient availability in the tumor microenvironment (TME). Nutrient accessibility not only shapes cancer metabolism but also affects therapeutic responses, genetic dependencies, and metastatic behavior. This dissertation explores how nutrient …
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The regulation of CD8+ T cells by nutrient availability
The aim of this project was to explore how nutrient availability control CD8+ T lymphocytes. The focus was the regulation and function of autophagy as CD8 T cells encounter amino acid deprived conditions. The study also examined the role of the AMP dependent kinase in CD8+ T cell responses to …
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Enhancing mineral nutrient availability and corn productivity with biostimulants
… population, nitrogen fertility, additional nutrient fertility, and foliar protection (Ruffo et al., 2015). In recent years, a new technology has been discussed, namely, biological products. These products have a wide variety of uses but are typically intended to increase crop growth, relieve …
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The Role of Nutrient Availability in Therapeutic Response of Leukemia
… to anti-cancer therapy, but which extracellular nutrients impact drug sensitivity is largely unknown. In this work, we used functional genomics to identify metabolic modifiers of the response to L-asparaginase (ASNase), a therapy that depletes plasma asparagine and targets leukemic cells with …
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Nutrient availability modulating physiology and pathogenicity of <i>Legionella pneumophila</i>
… the zinc metalloprotease, was regulated by iron availability. Common iron acquisition mechanisms, such as siderophores and transferrin receptors, were not elaborated by iron-limited cells. However, human transferrin was identified as a potential iron source for <i>L. pneumophila</i>, with the …
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Influence of Poultry Litter on Dark Tobacco Growth and Soil Nutrient Availability
… et al., 1984). Poultry litter utilized as a nutrient source is an inexpensive alternative to this dilemma due to its relatively neutral or alkaline composition. However, due the amount of chloride present in poultry litter, the University of Kentucky advises that application be limited to a …
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The effect of soil nutrient availability on resource allocation in tropical tree species
… functional variation among tropical trees in nutrient use, and the implications of this functional diversity of tropical forest nutrient and carbon cycling. Through a comparison forest litterfall patterns along a natural fertility gradient and experimental nutrient addition, I show that …
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Factors affecting soil nutrient availability and its impact on maize and soybean productivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Nitrous oxide from denitrification: Influence of field management, environmental conditions, and nutrient availability
… from agricultural fields under different nutrient management practices and climate conditions to evaluate models and make recommendations for model improvement. Model errors surrounded precipitation events and spring thaw prior to fertilization, highlighting the importance of understanding …
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The response of grassland carbon cycling to drought events and changes in nutrient availability
… agricultural production, carbon (C) storage and nutrient cycling. In particular, climate change is likely to increase the frequency and severity of extreme climate events, such as drought and the subsequent rewetting event. Yet the effect of drought events will not be consistent across grassland …
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Effects of Biofertilizers and Organic Amendments on Nutrient Availability in Soil and Plant Growth
… amendments, provide alternative sources of nutrients for increased plant yields and resistance against abiotic stress. The objective of this work was to evaluate the effectiveness of various biofertilizers and an organic amendment on improve plant health and/or crop yield. The first study …
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Nutrient availability in mineral sand tailings amended with yard waste compost and wood ash
Mine tailings result from surface mining coastal plain soils and sediments and are redeposited in a slurry form to the mined area. Mine tailing contains a low amount of organic matter, a low pH, and a high P fixation capacity. This research was carried out in the Atlantic Coastal Plain region to …
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Diffusive gradients in thin films (DGT) as a technique to predict nutrient availability to plants
… soils of Australia have extensive macro and micronutrient disorders varying greatly in their capacities to provide the chemical nutrients essential for plant growth. Assessment of nutrient availability in soils is important in order to maximise fertilizer efficiency and crop yields and to minimise …
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Chemical, Physical, and Biological Factors Influencing Nutrient Availability and Plant Growth in a Pine Tree Substrate
… work was to determine the factors influencing nutrient availability in PTS compared to PB or peat substrates. Chapter two reports data on the response of japanese holly and azalea to fertilizer rate when grown in PTS and PB. This study demonstrated that an additional 2.4 kg·m-3 of Osmocote Plus …
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Interactive effects of elevated carbon dioxide concentration with nutrient availability and leaf development on plant carbon metabolism
… can be dependent on interactions with water, nutrients, and plant developmental processes. The purpose of this thesis is to address fundamental knowledge gaps in understanding plant responses to the interaction between elevated [CO2] with water, nitrogen (N), and leaf developmental programs: …
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The impact of nutrient availability, substrate characteristics, and environmental conditions on wood decay and microbial decomposer communities
Wood is an important store of carbon and nutrients globally, and understanding the decay of that wood is critical for estimating rates of global nutrient and carbon cycling. Nutrient availability is important for driving decay rates as decomposers need nutrients to produce wood decay enzymes. My …
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