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 “"root length density"”.
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Evaluating Vegetation, Root, and Media Characteristics of a Bioretention Installation and their Influence on Stormwater Retention
… rely on complex interactions between vegetation, root dynamics, and growing media properties. Parameters of three growing media and three vegetation palates in a mature bioretention research facility were investigated in an arid, cold-climate region. Stormwater retention ranged from 0% to 67%, was …
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Effects of Elevated Atmospheric CO2 on Root Growth, Turnover and Decomposition in a Scrub Oak Ecosystem
… function are not well understood. Measurement of root growth response to elevated atmospheric carbon dioxide is critical to understanding soil carbon input. I investigated the effects of elevated carbon dioxide on fine root growth and decomposition using open top chambers with both ambient and …
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Exploring relationships between root architecture and growth of UK wheats (Triticum aestivum L.)
… during the grain filling period, growing deep rooting cultivars increased wheat yields by approximately 15%. Seedling root angle is associated with adult root system depth in Australian field-grown wheat cultivars (Triticum aestivum L.), but it is not yet known whether selection for root angle …
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Root growth of wheat genotypes in hydroponics and soil in relation to water stress tolerance and grain yield
Root characteristics of wheat (Triticum aestivum L.) genotypes are believed to be important in tolerance to drought and flooding, yet neither the extent of differences in root size among modern soft red wheat genotypes, nor the degree of association between root size and drought or flooding …
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Development of root observation method by image analysis system
Knowledge of plant roots is important for determining plant-soil relationships, managing soil effectively, studying nutrient and water extraction, and creating a soil quality index. Plant root research is limited by the large amount of time and labor required to wash the roots from the soil and …
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Effects of Elevated Atmospheric CO2 on Root Dynamics, Biomass and Architecture in a Scrub-Oak Ecosystem at Kennedy Space Center, Florida
… ecology lies with our understanding of root system growth, function and distribution. Large belowground structures, in addition to fine roots, are of particular interest because of their role in carbon sequestration. Non-destructive methods, including ground-penetrating radar (GPR) and …
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Corn root growth and distribution as influenced by soil physical properties
Mechanisms of root growth under variable field conditions were investigated by observing corn ( Zea mays L.) root growth and distribution in the field and by observing the influence of soil physical stresses on corn seedling root growth in controlled environments. The field soil was Groseclose silt …
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Do Roots Bind Soil? Comparing the Physical and Biological Role of Plant Roots in Streambank Fluvial Erosion
… is the first to consider how the combination of root physical effects, microbial production of EPS, and root effects on the hydrodynamic boundary layer could influence streambank soil erodibility. Specifically, the goal of this research was to quantify the physical and biological effects of roots …
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Understanding plant water relations and root biomechanics for hydro-mechanical reinforcement of slopes
… via both mechanical reinforcement (through root anchorage) and hydrologic reinforcement (through transpiration-induced soil matric suction). However, relatively little is known about the effectiveness of different plant species in stabilising soil slopes via the two reinforcing mechanisms, …
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The combined effects of fertilization and relative water limitation on tissue water relations, hydraulic parameters and shallow root distribution in loblolly pine (Pinus taeda L.)
… Our characterizations of the responses of root distribution and hydraulics to limited soil moisture here complement existing research, which demonstrated changes to root distribution and hydraulics in response to fertilization. The responses we discovered in fertilized trees that …
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Forest Productivity as a Function of Root Growth Opportunity
… greenhouse experiment to create a matrix of bulk density ((Ï b)) and volumetric water content (θv) to determine soil compaction effects on seedling growth of: (i) ponderosa pine (Pinus ponderosa Dougl. ex Laws) grown on Dome and Cohasset soils from California; (ii) shortleaf pine (Pinus echinata) …
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The Effects of Vegetation on Stream Bank Erosion
… the erodibility and critical shear stress of rooted bank soils in situ using a submerged jet test device. Additionally, several soil, vegetation, and stream chemistry factors that could potentially impact the fluvial entrainment of soils were measured. A total of 25 field sites in the …
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High-throughput phenotyping and genetic mapping of drought stress related traits in setaria (Setaria spp) and rice (Oryza spp)
… used to evaluate genetic variation in stomatal density, alongside canopy temperature as a proxy for canopy water use, in the model C4 plant, Setaria. An optical profilometer was used to generate a quantitative measurement of a patch of leaf surface to rapidly assess stomatal patterning. And the …
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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