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.
Results
Showing 1 to 20 of 67 for “"Nutrient management"”.
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Legacy Nutrient Management and Remediation in Diverse Agricultural Watersheds
Excess nutrient loading from agricultural landscapes remains a primary driver of freshwater eutrophication in the United States, despite decades of conservation investment. In many watersheds, water quality impairments persist due to the accumulation of legacy nutrients—phosphorus (P) stored in …
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Maximizing yield of high quality cottonseed through nutrient management strategies
… adequate water supply, growing season length and nutrient supply become the next major limiting factors to cotton production on the Texas High Plains. The prevailing temperatures provide marginal heat unit accumulation during the early and latter parts of the growing season. The cool temperatures …
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Human-nature relationships and nutrient management practices of Illinois farmers
… Belt and thus the global challenge of nitrogen management evolving around the use of artificial fertilizers. Mitigation of the hypoxic zone in the Gulf of Mexico epitomizing this challenge necessitates the integration of social science-based approaches. Prior studies have shed light on the …
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Using bio-manipulation to optimise nutrient management within intensive farm systems
… in this thesis sought to understand how the management of livestock slurry within intensive grassland systems can be optimised to support production. The thesis had a particular focus on understanding how the soil microbial community mediates the input of livestock slurry, in terms of the …
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Nutrient Management Planning on Virginia Livestock Farms: Impacts and Opportunities for Improvement
… to water bodies through the implementation of nutrient management plans on livestock farms. Study results indicate that nutrient management plans do result in significant reductions while maintaining or increasing farm income. Nutrient management plans on the four case farms reduced mean …
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Investigating Nutrient Management Innovations in Upland Cotton Production to Increase Agronomic Efficiency
… (B) formulation and application timing on tissue nutrient levels during the bloom period; 2) evaluate lint yield response of cotton to different formulations of nitrogen (N), K, S and B applied at side-dress; and 3) compare 5x5 banding (5 cm beside and 5cm below the seed) and deep placement of …
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Legume integration and nutrient management impacts on soil health and cropping system productivity
… farming systems globally. Thus, proper management of soil is critical for supporting long-term crop production and addressing multiple sustainability challenges in these agricultural systems. Integration of legumes into cropping systems, especially when combined with organic nutrient …
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Topsoil thickness impact on corn, soybean, and switchgrass productivity and soil nutrient management
… soybean (Glycine max [L.]) yield, profit, and nutrient dynamics on claypan soils. Understanding how and when DTC affects these factors across the landscape is crucial for improving management on these challenging soils. Site-specific placement of perennial crops, such as switchgrass (Panicum …
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Assessing nutrient management strategies on agroecosystem productivity and sustainability in the U.S. Midwest
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Measuring the impact of nutrient management planning on surface water quality in Wisconsin
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Improving performance and expanding application of denitrifying bioreactors for nutrient management in agricultural landscapes
… direct hydrologic pathways that transport excess nutrients from fields to surface waters. As a result, nitrate (NO₃) can bypass natural soil filtration and attenuation processes, contributing to elevated nutrient loads in downstream ecosystems and increasing risks to environmental and human …
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Effective Modeling of Nutrient Losses and Nutrient Management Practices in an Agricultural and Urbanizing Watershed
… Manassas is experiencing eutrophication due to nutrient loads associated with agricultural activities and urban development in its drainage areas. Two watershed model applications using HSPF, and one receiving water quality model application using CE-QUAL-W2, were linked to simulate Lake …
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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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Testing two existing fertilizer recommendation algorithms: Stanford's 1.2 rule for corn and site-specific nutrient management for irrigated rice
U of I Only Restriction Lifted for Item 49800 on 2016-09-22T20:59:24Z.
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Coffee, fertilizer, and the pursuit of sustainable farming: Understanding edaphic context to improve nutrient management strategies for smallholder coffee production in a volcanically active region
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Regulating farm nutrient runoff : Maryland's experience with the Water Quality Improvement Act
… designed to address nonpoint agricultural nutrient pollution rely almost exclusively on voluntary programs and financial incentives to encourage farmers to adopt nutrient management plans and other best management practices. In 1998, after highly publicized fish kills highlighted …
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Biophysical economic analysis of nutrient and sediment management practices in the Mississippi Alluvial Valley
… soils tend to increase row crop agriculture nutrient and sediment effluent loads. Best management practices help reduce row crop production environmental pollution. This dissertation looked at nutrient and tillage management practices that could help farmers address future total maximum daily …
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Corn tissue nutrient response related to soil health and fertility
Nutrient uptake in corn (Zea mays L.) is influenced by many different factors which include properties of soil health. The push for increasing soil health has raised the question of how soil health and fertility measurements could be combined to improve nutrient management decisions. Attention to …
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User-centered design of a fertilizer recommendation system for smallholder farmers
… by adopting the principles of site-specific nutrient management (SSNM), which call for judicious use of fertilizer based on frequent soil testing. However, inadequate soil testing capacity and lack of access to information act as barriers to its adoption.
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Farmer adoption of nitrogen modeling tools: perceived barriers and important factors
… studies have explored factors influencing best management practices, nutrient management practices, and agricultural technology adoption, little is known about factors that influence farmers’ adoption decisions specifically on the use of NMT. This study examines the role of perceived important …
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