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 14 of 14 for “"Root Surface Area"”.
-
Root Surface Area Related to Anchorage in the Begg Technique
… possible primarily because of the difference in root surface area of the various teeth; the greater the surface area, the greater the force required to initiate movement.</p> <p>The purposes of this study were to conduct a more thorough investigation of actual root surface area of anterior teeth, …
-
The aquatic macrophyte Vallisneria americana as a biomonitor of site quality in Great Lakes areas of concern.
Leaf-to-root surface area ratios in Vallisneria americana provide a simple and inexpensive, relative measure of sub-lethal effects of organochlorine contamination. The present study was conducted to determine whether this index of surface area could be used as an effective biomonitor of overall …
-
Investigation of the Interactions Among Grass, Chlorophenols and Microbes
… processes by which plants affect the fate of subsurface organic contaminants. The research was divided into three studies: interactions between live grasses and 2,4-dichlorophenol (DCP), 2,4,6-trichlorophenol (TCP), and pentachlorophenol (PCP); physico-chemical interactions between the three …
-
Phosphorous uptake and utilization efficiency in cluster root and non-cluster root forming species of the Core Cape Subregion, South Africa
… to enhance P-acquisition, such as increased root surface area (SA) and specific root length (SRL), cluster root and root hair proliferation and exudation of organic acids and acid phosphatases (APase) from the roots. Crop yield is limited worldwide due to the unavailability of P and …
-
Rhizosphere competence, antibiotic and siderophore biosynthesis in Pseudomonas chlororaphis: implications for the biological control of cotton seedling disease pathogens
… (sid) mutant populations as a function of cotton root surface area (cm²) in the absence of soil irrigation. Bacterial density and distribution patterns on roots evaluated 22, 36, and 50 DAP, in two pathogen-free soils (pH 5.7, high Fe⁺³, high phosphorus (P); pH 8.0, low Fe⁺³, low P) indicated that …
-
THE INFLUENCE OF PULSE CROPS ON SOIL PHOSPHORUS AVAILABILITY TO SUBSEQUENT WHEAT CROPS IN THE BROWN SOIL ZONE OF SASKATCHEWAN
… other than soil P supply, such as a better crop rooting system with a larger surface area to absorb P, may be responsible for greater P uptake by wheat following pulse crops. Studies of root infection by arbuscular mycorrhizal fungi (AMF)were inconclusive, but if enhanced following growth of a …
-
Greenhouse gas fluxes and root productivity in a switchgrass and loblolly pine intercropping system for bioenergy production
… and switchgrass. RS is primarily the result of root respiration (RA) and microbial decomposition of organic matter (RH) releasing CO₂ as a by-product and is an important and large part of the global carbon (C) cycle. Accurate estimates of the two components of total soil respiration (RS) are …
-
Use of Plant Growth Regulators to Improve Branching of Herbaceous Perennial Liners
… of benzyladenine (BA) on the branching and root and shoot growth of Agastache Clayt. Ex Gronov. 'Purple Haze', Gaura lindheimeri Engelm. & A. Gray 'Siskiyou Pink', Lavandula × intermedia Emeric ex Loisel. 'Provence', Leucanthemum × superbum (Bergmans ex J.W. Ingram) Bergmans ex Kent. …
-
The impact of ozone, water stress, and acid rain on the growth and physiology of fraser fir seedlings
… of pH 3.0 did result in significantly higher root surface area and significantly reduced Ts after 5 wks of exposure; these responses are possibly due to a fertilization effect. No treatment interactions were significant. However, the combined, cumulative effect of all of these stresses may …
-
Soil resource heterogeneity and site quality in Southern Appalachian hardwood forests: Impact of decomposing stumps, geology and salamander abundance
… total carbon (C) and nitrogen (N) pools and fine-root dynamics, 2) compare and contrast the use of ground-penetrating radar (GPR) vs. a soil auger for estimating soil depth and site quality and 3) to evaluate how eastern red-backed salamanders (Plethodon cinereus) affect N-availability. For the …
-
Studies on aluminum toxicity in an aluminum-sensitive cultivar of barley: impact on ion fluxes and calcium distribution
The effects of aluminum (Al) on root growth and development in the aluminum-sensitive cultivar of barley, Hordeum vulgare Lemend. Lam. var. Kearney was studied using low (1 AM) and high concentrations (50 AM) of Al. To analyze the impact of the aluminum treatments, changes in the anatomy, …
-
Plant growth, stress tolerant traits and regulation of heat activated proteins in Aspalathus linearis (Burm. f.) R. Dahlgren exposed to elevated temperature and drought
… Panel on Climate Change has stated that global surface temperatures are constantly increasing and are likely to exceed 2 °C, compared to average temperatures in 1900, by the end of the 21st century. Changes in precipitation will also become more erratic, with high latitude and mid-latitude areas …
-
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
-
New innovations for the 4R’s of nutrient stewardship to improve corn productivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms