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 8 of 8 for “"Organic Soil Amendments"”.
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Multiple Storm Event Impacts on Epikarst Storage and Transport of Organic Soil Amendments in South-Central Kentucky
… karst areas is susceptible to contamination from organic soil amendments and pesticides. During major storm events during 2011, dye traces were initiated using sulphorhodamine-B, fluorescein and eosine in a groundwater recharge area where manure was applied to the ground. Fecal coliform samples …
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Effects of Organic Soil Amendments on Soil Physiochemical and Crop Physiological Properties of Field Grown Corn (Zea mays) and Soybean (Glycine Max)
… The presence of humic substances in composted organic amendments may increase crop tolerance to water stress through their hormone-like effects on plant metabolism. The objectives of this study were to calculate N mineralization rates of composted and non-composted organic materials used in …
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Management strategies for control of soybean cyst nematode and their effect on the nematode community
… nematode community is a useful bioindicator for soil health. In chapter 1, relevant research is reviewed. Chapter 2 describes experiments testing ten organic soil amendments at various rates for SCN control in the greenhouse. Some amendments-particularly canola meal, pennycress seed powder and …
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Heavy metal redistribution in soils using compost as a soil amendment
Organic soil amendments such as compost can reduce the availability of heavy metal contaminated soil. The objectives of this study were (1) to evaluate the efficiency of compost as an soil amendment within heavy metal contaminated soil; (2) to determine the hypoaccumulation of heavy metals in the …
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SIMPLE ORGANIC FERTILIZER AMENDMENTS FOR FARMING IN DEGRADED SOILS: EFFECTS ON PLANT-MICROBE INTERACTIONS
<p>The rapid loss of topsoil, biodiversity, and water quality across agricultural land in the United States and the industrialized world poses some of the most important risks to the future of global and domestic food security. Not only is arable land being lost at an unsustainable pace, but the …
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The Effects of Agricultural Waste-Based Compost Amendments in Organic Pest Management
<p>Soil-borne pests and pathogens, such as <em>Verticillium dahliae</em>, can devastate a wide range of annual and perennial crops. Current management options for organic production are limited and sustainable management of pathogens, weeds, and arthropods is important for staying profitable and …
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Seasonal soil carbon fluxes in transitioning agricultural soils in Central Washington State: Relations to land-use, environmental factors and soil carbon-nitrogen characteristics
… agricultural land-use practices to increase soil carbon sequestration contributes to climate change mitigation and improved food security by moving CO<sub>2</sub> from the atmosphere into soil as soil organic carbon (SOC). In 2016, a farm in Thorp, Washington, Spoon Full Farm, began …
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Long-term Effects of Broiler Litter Application Rate on Runoff, Leaching, and Soil Respiration from a Captina Silt Loam
… stimulate carbon dioxide (CO2) release from the soil to the atmosphere and may contribute to global warming. The objectives of this study were to determine long-term trends in runoff and soil leachate water quality and to evaluate soil respiration under natural precipitation from a Captina …