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 14 of 14 for “"microbial biomass carbon"”.
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Organic carbon and fertility of forest soils on the Allegheny Plateau of West Virginia
… sampled and analyzed for soil organic and soil microbial biomass carbon as well as various fertility parameters. Additionally, vegetative biomass estimates were made at the sampling sites. The soil series sampled (established and tentative) are frigid, well and moderately-well drained …
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Reflective mulch effects on the grapevine environment, Pinot noir vine performance, and juice and wine characteristics
… parameters tested were temperature, moisture, microbial biomass carbon, dehydrogenase enzyme activity and nutrient levels. Also investigated were canopy temperature and radiation reflected from each treatment. Vine parameters included nutrient levels, photosynthesis, leaf greenness, fruit …
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Herbicide management alters fungal biomass and community composition in Great Lakes coastal wetlands
… soil conditions, potentially impacting soil microbial structure and function. We sampled soil communities in Great Lakes coastal wetlands in southeastern Michigan dominated by Phragmites and sites that had been previously invaded by Phragmites then treated with herbicide from 2011-2017, to …
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SIMPLE ORGANIC FERTILIZER AMENDMENTS FOR FARMING IN DEGRADED SOILS: EFFECTS ON PLANT-MICROBE INTERACTIONS
… providing a significant amount of nutrients, and microbial diversity to the soil. Overall plant biomass, culturable microbial diversity, microbial functional diversity via community-level physiological profiling, soil water holding capacity, soil microbial carbon, microbial biomass carbon, and …
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The effects of temperature and moisture on alpine microbial processes across a gradient of soil development
… introducing bioavailable nutrients. Because microbial communities are important drivers of nutrient cycling and ecosystem function in the alpine, and because temperature, moisture and nutrient availability are primary controls of microbial abundance and activity, it is likely that microbial …
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To Mix or Not to Mix: Performance and Management of Diverse Cover Crop Mixtures
… (0, 56, 112 and 156 kg N ha-1). Cover crop biomass, N accumulation, CC C:N ratio, and corn and soybean yield were measured annually. Soil bulk density, compaction, infiltration rate, pH, electrical conductivity, soil respiration, earthworm counts, soil microbial respiration, and soil …
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Quantificação de carbono e emissões de gases de efeito estufa sob diferentes tratamento do solo no cerrado brasileiro
… to the atmosphere. Studies on the quality of carbon (C) in soils and distribution of aggregates show features related to its accumulation in the soil. Since the measures soil respiration, carbon dioxide emissions (CO2), indicate the rate of oxidation of C. It is estimated that 70% of the …
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Demonstrating Short-term Impacts of Grazing Cover Crops on Soil Health in South Dakota
… diverse cover crop mixtures provided increased biomass on the surface that can alleviate the compaction impact under these integrated crop-livestock systems. Surface (0-5 cm depth) bulk density was not significantly impacted by grazing. Some soil physical and hydrological properties were …
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Examining the effect of rotation sequence on biological nitrogen fixation of pulse crops
… locations. A persistent pattern was observed in microbial biomass carbon (C) and phospholipid fatty acid (PLFA) biomarker results, where levels of each were higher in soil from pulse crops grown on oilseed stubble at Davidson, Theodore, and Springside. Climatic conditions also may have affected …
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The effects of biochar on soil mineral availability
… an organic soil amendment, produced by treating biomass feedstock at several pyrolytic temperatures and applied pressures in an oxygen limited environment. It is considered as a renewable resource that can be used to mitigate problems concerning both soil fertility and environmental issues. …
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Development of Soil Survey Methods for Urban Areas
… soil is the nature and properties of its organic carbon with a significant percentage of black carbon (a particulate product of incomplete combustion), which is less biologically active. Thus, in order to determine the ability of a soil to support biological activity and supply nutrients for plant …
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Response of Soil Properties to 23-25 Years of Diverse Crop Rotations and Tillage Systems in South Dakota, USA
… (NT) are beneficial in improving soil organic carbon (SOC) and other soils properties. The present study was conducted to evaluate the interactions and impacts of long-term tillage and diverse crop rotation systems on soil quality indicators that include a range of soil chemical, physical, …
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The Influence of Urban Soil Rehabilitation on Soil Carbon Dynamics, Greenhouse Gas Emission, and Stormwater Mitigation
… urban soils have potential to provide a carbon sink to mitigate greenhouse gas emission and climate change. However, typical urban land development practices including vegetation clearing, topsoil removal, stockpiling, compaction, grading and building result in degraded soils. In this …
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Evaluating greenhouse gas emissions from Illinois agriculture systems
… and only rotation had an effect on cumulative carbon dioxide (CO2) (p = 0.0137). However, their interaction affected cumulative nitrous oxide (N2O) emissions significantly (p = 0.0960); N2O emissions from tilled CCC were the greatest at 6.9 kg-N ha-1-yr-1; while emissions from NT CCC (4.0 kg-N …