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 11 of 11 for “"mineralizable nitrogen"”.
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Soil health assessment of the Sanborn Field long-term experimental study
… associations between soil organic carbon, total nitrogen, potentially mineralizable nitrogen, active carbon, microbial biomass, and water stable aggregates; while a strong negative linear correlation existed between each of these properties and bulk density. The second study was conducted to …
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Mine soil properties influencing white pine (Pinus atrobus L.) growth in Southwest Virginia
… (R² = 22.5%), and foliar cations with anaerobic-mineralizable nitrogen (R² = 0.00-27 .5%). The relationship between functional environmental factors and growth was uniformly weak (R² = 0.00-14.97%). Plant moisture stress was consistently related to overall height and its increment over the last …
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Estimating Soil Nitrogen Supply and Fertilizer Needs for Short-Rotation Woody Crops
… growth and foliar nutrition response to repeated nitrogen (N) fertilizer applications, 2) determine soil N supply, plant N demand, foliar N resorption, and soil and fertilizer uptake efficiencies, and 3) test a simple N supply model. In order to expand the findings to the range of sweetgum site …
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Developing near- and mid-infrared spectroscopy analysis methods for rapid assessment of soil quality in Illinois
… particulate organic matter (POM), potentially mineralizable nitrogen (PMN), fluorescein diacetate (FDA) hydrolysis, soil nutrient abundance, and productivity proxy Normalized Difference Vegetation Index (NDVI), using the whole NIR or MIR spectra or reduced data sets comprised of spectral …
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Effect of rotation, organic inputs and tillage on crop performance and soil quality in conventional and low-input rotations in central Iowa
… organic carbon (POM-C) and potentially mineralizable nitrogen (PMN) were increased in both LEI rotations relative to a two year (2-yr) corn (Zea mays L.) -soybean (Glycine max L.) rotation. Biologically labile organic matter fractions were highly stratified in the 2-yr rotation compared …
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Dynamics and Characterization of Soil Organic Matter on Mine Soils 16 Years after Amendment with Topsoil, Sawdust, and Sewage Sludge
… organic matter content, aggregate stability, and mineralizable nitrogen, (ii) to determine the effects of these key soil quality variables on plant productivity, and (iii) to determine the comparative ability of trees and herbaceous plants to persist and to conserve or maintain mine soil quality. …
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Effect of summer and winter rotations on selected soil properties and productivity of succeeding winter chickpea (Cicer arietinum L.)
… carbon (OC), (NH4+) ammonium and potentially mineralizable nitrogen (PMN). Crop phenology (days to 50% emergence, flowering, and podding) and crop growth (plant height, canopy cover, number of primary and secondary branches) were determined at various crop growth stages. Grain yield and yield …
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Multifunctional woody polycultures and their influence on soil organic carbon
… organic matter [POM], and potentially mineralizable N [PMN]), inherent soil and landscape factors were quantified on samples collected using plot- and grid-based approaches to understand their influence on soil organic carbon (SOC) change. Baseline soil samples were collected in the …
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Legacy effects of cover crop monocultures and mixtures on soil inorganic nitrogen, total phenolic content, and microbial communities on two organic farms in Illinois
… soil environments by influencing soil inorganic nitrogen (N) pools, total phenolic content through the release of secondary compounds, and by altering soil microbial communities. I analyzed soils collected during a two-year field study and aimed to determine how spring-sown cover crops (grass, …
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Nitrogen Cycling from Fall Applications of Biosolids to Winter Small Grains
Environmental concerns about winter nitrogen (N) leaching loss limit the amount of biosolids applied to winter small grains in Virginia. Ten field studies were established 2012-2014 in Virginia to determine the agronomic and environmental feasibility of fall biosolids applications to soft red …
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Biologically based soil fertility in organic grain production systems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01