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 28 for “"Nutrient Loss"”.
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Synergistic approach for nutrient loss mitigation and waste management using paired modified bottom ash and woodchip bioreactor treatment system
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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COMPOST QUALITY RECOMMENDATIONS FOR REMEDIATING URBAN SOILS
… compost could potentially increase the risk of nutrient loss through leaching and runoff. The objective of our study was to consider the effects of different compost amendments on soil health, plant health and susceptibility to nutrient leaching. We conducted a bioassay to measure the effects of …
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The application of Earth Observation for mapping soil saturation and the extent and distribution of artificial drainage on Irish farms
… consequences, for example, through increased nutrient loss to surface waters or increased flood risk. It can also have implications for greenhouse gas emissions. Accurate data on soil drainage properties could help mitigate the impact of these consequences. Unfortunately, few countries …
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Nitrogen, phosphorus and potassium removal from perennial energy grasses when grown on wet marginal land
Reduction of nutrient loss from agricultural lands is a major concern facing the agricultural industry. On-farm efforts will lead to a proactive approach that has the potential to confer key ecosystem services. The field study was conducted from 2012 to 2015 on marginal land located at the …
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Understanding the genetic architecture of secondary domestication traits in Field Pennycress (Thlaspi arvense L.)
… services such as reduced soil erosion and nutrient loss in between fall corn harvest and spring soybean planting. However, pennycress is currently limited by its small seed size and unimproved oil production. This dissertation builds on the limited research on pennycress breeding and …
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Development of a continuous, physically-based distributed parameter, nonpoint source model
… transport of dissolved and sediment-bound nutrients, and nutrient transformations. The model was developed for use by nonpoint source pollution managers to study the long-tenn effectiveness of best management practices (BMPs) in reducing runoff, sediment, and nutrient losses from …
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Global meta-analysis and metagenomics approach on the soil microbiome associated with cover cropping
Soil nutrient loss is one of the major causes of soil degradation that threatens future global food security. Cover cropping is a promising sustainable agricultural method with the potential to enhance soil health and mitigate consequences of soil degradation. As one of the agricultural practices …
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Development of Environmental Tracers for Sediments and Phosphorus.
… from arable land which can lead to reductions in nutrient loss and eutrophication.
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Perennial energy crops on riparian buffers affect nitrogen cycling microbial communities
… mitigating greenhouse gas emissions and reducing nutrient loss while producing sustainable bioenergy feedstocks. Even though we understand the relationship between N fertilization and energy crop biomass production, our understanding of the interaction between the soil N cycle and bioenergy crop …
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Application of multi-state financial data for use with the USDA Agricultural Conservation Planning Framework
… Belt region, specifically with regards to excess nutrient pollution. Agriculturally dominated landscapes are one of the major contributors to impairments in waterways at both local and regional scales. As Iowa and other US Corn Belt states continue to navigate water quality issues, spatially …
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Simulation of Runoff and Pollutant Loss in Urbanizing Watersheds
… The model predicted the hydrology and pollutant losses for the year 1999 from the Stroubles Creek watershed within 50% of the observed values after calibration. Prediction errors were much higher for the parking lot and dry pond simulation of the period of time from August 1995 to February 1996. …
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BMP Cost and Nutrient Management Effectiveness on Typical Beef and Beef-Poultry Farms in Shenandoah County, Virginia
… the change in whole-farm net revenues and nutrient reduction from the implementation of five best management practices (BMPs) on a typical beef and beef-poultry farm in Shenandoah County. Whole-farm net revenues, resource allocation, nutrient loss reductions, and the cost efficiency of …
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Nutrient Loadings Into Conesus Lake
A nutrient loading study utilizing field measurements has not been performed on Conesus Lake tributaries since the construction of a perimeter sewer. The database from this study includes many parameters and is quite large. This report details the results of measurements for stream nutrient …
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Interactive effects of hemlock mortality and nitrogen availability on nutrient pools and fluxes in the southern Appalachian Mountains
… strong control on nitrogen (N) dynamics, and its loss due to infestation by the hemlock woolly adelgid (Adelges tsugae) is expected to affect nutrient dynamics in impacted stands. I evaluated the potential for variation in N availability to influence the magnitude of effects of hemlock decline on …
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Does the foliage of Acacia spp. determine their distribution? : a study to determine how two different leaf forms may alter the distribution of Acacia spp. in relation to phosphorus concentration, mean annual precipitation and temperature within Australia and South Africa
… However due to the very low concentrations of nutrients particularly P within Australia and the generally longer life span exhibited by phyllodes compared to normal compound leaves, we hypothesized that phyllodes were in fact an adaptation to nutrient limitation, and provide a way in which to …
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Financial costs and economic tradeoffs of alternative manure management policies on dairy and dairy/poultry farms in Rockingham County, Virginia
… 150-cow dairy and dairy/poultry farms. Current nutrient applications are manure-based, with each farm substituting poultry litter for commercial fertilizer. Potential field-level nutrient losses estimated by EPIC, a soil/plant growth simulation model, indicate the highest nitrogen losses on …
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Evaluation of Nutrient and Pathogen Losses From Various Poultry Litter Storage Methods
… the above provinces. Samples were analyzed for nutrients, fecal coliforms, and solids. Concentrations of NHx, TKN, OP, TP, VSS, and FC in surface runoff from uncovered litter piles were all statistically higher than that from covered piles, with NO3 being the exception. However, increased runoff …
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Effect of winter cover cropping practices on maize yield and nutrient cycling
The Illinois Nutrient Loss Reduction Strategy has set Phase 1 reduction milestones for nitrate-nitrogen and total phosphorus of 15 percent and 25 percent, respectively, to the Mississippi River by the year 2025 with the ultimate goal of a 45 percent reduction for both nutrients when compared to …
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Integrating Machine Learning Into Process-Based Modeling to Predict Ammonia Losses From Stored Liquid Dairy Manure
… pollution challenges. However, ammonia loss through volatilization during storage remains a challenge. Quantifying these losses is necessary to inform decision-making processes to improve manure management, and design ammonia mitigation strategies. In 2003, the National Research Council …
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Modeling the impact of cereal rye as a winter cover crop on water and nitrogen cycling in the corn-soybean system at various scales
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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