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 20 of 30 for “"Use of soil"”.
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Sustainable use of soil resource base in the Dominican Republic:a farm level economic analysis of soil conservation practices
Income effects associated with specific levels of erosion reduction for a representative farm in the Bao watershed area in the Dominican Republic are examined in a linear programming framework. Estimation of costs expected in response to specific levels of erosion reduction and the income effects …
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Establishment Method and Cultural Practice Effects on Sports Turf
<p>The use of soil-based sod on sand-based rootzones for the establishment of sports fields and golf courses is a common occurrence. Furthermore, the use of soil-based sod on sand-based rootzones can lead to potential problems associated with decreased water infiltration, gas exchange, rooting, and …
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The Effect of Foliar and Root Pathogens of Soybean on Selected Host Parameters
The use of soil fumigation (using metham) and foliar fungicide sprays (using benomyl) reduced pathogen populations in foliar and soil components. Individually they improved some aspects of soybean health, but when used together these chemical controls resulted in consistent increases in plant …
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Pedologic Based Subgrade Characterization for Low-Volume Pavement Design
Subgrade soils play an integral part in pavement performance. The nature and properties of subgrade soils must be considered in structural pavement design. Many highway agencies, particularly agencies that administer "local" or low-volume pavements, do not have the resources to conduct …
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Controlled Low-Strength Material (CLSM) produced from limestone fines and other byproducts
… fill mixtures are typically specified and used in lieu of compacted fill especially for backfill, utility bedding, void fill and bridge approaches. This study developed flowable fill mixtures containing only quarry fines, fly ash, synthetic gypsum and water, for different applications …
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Case Study of a Variant of Western Corn Rootworm, Diabrotica Virgifera Virgifera LeConte, in East Central Illinois
"We are working on this problem because growers do not have enough information that will enable them to practice sound IPM practices rather than just applying soil insecticides prophylactically at planting. In fact, findings from this research might enable growers to reduce the use of soil …
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Improving Pearl Millet (Pennisetum glaucum (L.) R.Br.) Productivity in Salt-affected soils in Senegal: A Greenhouse and Field investigation
The primary soil limitations to crop yield in the Senegalese "Peanut Basin" include salinity, acidity, and fertility. Crop yield may be increased by use of soil amendments and salt-tolerant cultivars. Objectives of this research were to evaluate salt tolerance of various millet (Pennisetum glaucum …
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An evaluation of carbon monoxide and methane as substrates for the denitrification of water
This study involved the use of soil and suspended growth microcosms to study the variation in groundwater denitrification rates using different substrates. Two gaseous substrates, carbon monoxide and methane, were studied and compared to a common liquid substrate, methanol. Denitrification with …
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Effects of biochar, subsoiling, and native seeding on the establishment of pollinator habitat in log landings
… Boosting the abundance, richness, and diversity of floral resources and bee nesting sites may assist in this goal. Log landings (areas where harvested timber is stored and loaded for transport) have the unique potential to act as early successional pollinator habitat in otherwise densely stocked …
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Análise multitemporal e espacial do uso e ocupação do solo no município de Itaporanga-PB.
The municipality of Itaporanga located in the interior of Paraíba and is inserted into thesemi-arid northeast, the municipality has a study area of approximately 467,73 km ².Biome predominant in this county is the caatinga hiperxerófila.The archaic techniques of soil preparation, such as …
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Optimization of Soil-Lime and Cement Mixes for Compressed Earth Stabilized Blocks for Low-Cost Housing in East Africa (Kenya)
The population of East Africa (Kenya) has continued to increase steadily due to rural urban migration. This has created a large population influx of low-income earners which has resulted in lack of low-cost affordable housing. Low-cost housing has always been in short supply and the large urban …
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Exploring the psychological determinants of Geophagia among Women At Kabwata Clinic In Lusaka
General objective To explore the practice of geophagia and views of women who practice geophagia on their experiences with regards to determining factors and risk factors. Methods This research was a quantitative study. Descriptive study design was used to collect, classify, analyze, compare and …
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Exploring the psychological determinants of Geophagia among Women At Kabwata Clinic In Lusaka
General objective To explore the practice of geophagia and views of women who practice geophagia on their experiences with regards to determining factors and risk factors. Methods This research was a quantitative study. Descriptive study design was used to collect, classify, analyze, compare and …
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Soil testing and plant analysis to optimize nitrogen management in manured cornfields
<p>Land application of animal manure is widely accepted as a method of recycling plant available nitrogen (N) within agricultural systems, but there is great need to improve the efficiency of this recycling. Soil testing and plant analysis are widely accepted as important tools for managing plant …
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Effects of Soil Amendments and Biostimulants on the Post-transplant Growth of Landscape Trees
Use of soil amendments at planting is one of the time-honored traditions in horticulture, although their effectiveness has been questioned by many. Recently, humate and humate-based products, generally known as biostimulants, have been marketed to increase transplant success. In this study, three …
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Cabaceiras: uma análise dos aspectos físicos e do uso da terra como fatores agravantes da Desertificação.
This work makes an analysis of desertification at the city of Cabaceiras, located at the cariri of Paraiba through so a historical survey of the use and occupation of the land since the colonial Brazil up to nowadays, as for an analysis of phytosociological dates through of transects in certain …
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Nematodes as indicators of sustainable soil health management practices in corn-soybean production
Soil nematodes are multicellular organisms causing significant economic and ecological impacts, and their community composition is widely used as a bioindicator of soil health. Current methodologies for nematode assessment require further refinement and advancement. This thesis addressed knowledge …
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Understanding the adoption of soil and water conservation practices: the role of social capital
Kenya has been adversely affected by soil erosion due to population growth, changes in land use and land cover, and unsustainable agricultural practices. Issues related to land degradation cost the Kenyan government approximately $390 million or 3 percent of the country’s GDP yearly (Government of …
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Management of critically endangered renosterveld fragments in the Overberg, South Africa
… vegetation type found within the FynbosBiome of South Africa, a biome which is recognized as one of the world’s smallest, yet richest plant kingdoms. Due to the fact that renosterveld tends to be dominated by a handful of small-leaved asteraceous shrub species, it creates the illusion that it …
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The influence of redox dynamics on nitrogen cycling and nitrous oxide emissions from soils
Soils are a dominant source of nitrous oxide (N2O), a potent greenhouse gas. The complexity of drivers of N2O production and emissions has hindered our ability to predict the magnitude and spatial dynamics of N2O fluxes. Soil moisture can be considered a key driver because it influences oxygen …
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