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 20 of 109 for “"soil quality"”.
-
Soil quality in organic cropping systems
The objective of this research was to quantify soil quality indicator levels under contrasting organic practices and to provide scientific information that can lead to development of best management practices for organic no-till and transitioning to organic production. Four studies examining crop …
-
Soil quality in long-term corn and soybean rotations
Although soil quality is significant for crop productivity, input efficiency, and environmental stewardship, the effect of cropping systems on soil quality has not been examined very thoroughly for most cropping systems in the Midwest. Thus the advantages and disadvantages associated with standard …
-
Trees in Urban Environments: How Soil Quality Impacts Tree Performance
… change and population growth. However, urban soil conditions can be unfavorable for tree growth. Street trees are widely known to suffer from poor soil quality, but there has been no comprehensive review of this topic so far. Clean soils can be transported from nonurban areas to support …
-
On-site effects of accelerated erosion on direct-physical soil quality indicators
Accelerated soil erosion is a serious agricultural problem in South Africa limiting soil productivity and little it’s known about its effect on soil quality. This study aimed to provide a less laborious, less time consuming and inexpensive protocol of estimating the effects of accelerated erosion …
-
Continuous No-till Management: Implications for Soil Quality, Carbon Sequestration, and Nitrogen Conservation
… as an effective practice to regain a portion of soil organic matter lost following decades of cultivation. Increasing soil organic matter sequesters C, conserves organic N and concomitantly improves soil quality. Objectives of this research were to: i) quantify C sequestration rate and N …
-
Assessing the role of probiotics for the enhancement of soil quality under cover crops
… in some negative impacts on the environment and soil microbial biodiversity. Use of alternative management such as application of probiotics for soil and plants is a believed to promote soil biodiversity and soil nutrient cycling. Probiotics are believed to improve plant growth, root development …
-
Carbon and nitrogen cycling and soil quality under long-term crop rotation and tillage
This Dissertation was approved for publication on 2016-12-22 at 11:25.
-
Evaluation of soil fertility and soil quality aspects of organic perennial pastures and annual forage crops
To view the abstract, please see the full text of the document.
-
Soil quality and nitrogen cycling dynamics altered by fertility amendments in intensively managed vegetable production systems
… management strategies can negatively impact soil and environmental quality. This can be particularly problematic in high tunnels, where longer production periods and modification of the growing environment put these systems at greater risk for soil degradation. Identification of fertility …
-
Developing near- and mid-infrared spectroscopy analysis methods for rapid assessment of soil quality in Illinois
… and mid-infrared (MIR) spectroscopic methods for soil quality assessment has grown rapidly. Ideally robust calibration of models can be developed to rapidly and affordably predict soil quality (SQ) indicators that are more costly to measure. Refinement of data libraries and standardization of data …
-
Effects of Black Walnut and Honey Locust on Forage Growth, Soil Water, and Soil Quality Indicators
… and black walnut silvopastures on indicators of soil quality when compared to open pasture. 2. Determine if silvopasture systems changed forage mass production and soil water compared to open pastures. The study on soil quality indicators was performed in a previously grazed silvopasture. Samples …
-
Groundcover Management System and Nutrient Source Impact Physical Soil Quality Indicators in an Organically Managed Apple Orchard
… were implemented for their ability to alter the soil physical condition of a newly established, organically managed apple (Malus x domestica Borkh.) orchard. Annual applications of municipal green compost (GC), shredded office paper (SP), wood chips (WC), and mow-blow (MB) grass mulch were …
-
Using Arbuscular Mycorrhizae to Influence Yield, Available Soil Nutrients and Soil Quality in Conventional VS. Organic Vegetable Production
… if mycorrhizae improve yield, available soil nutrients and soil quality from two different fertilizer sources. Measurements were taken on yield, available soil nutrients, and soil quality in comparison of glomalin production and soil loss percentage. Two plant species were chosen, …
-
The long-term effects of farming practices on soil quality, as influenced by farmer attitude and farm characteristics
… farming systems, in a region of the Dark Brown soil zone west of Saskatoon, were investigated to identify farming practices that are soil-conserving, or soil-degrading, by measuring their effects on soil quality. The study identified soil properties that are practical and measurable indicators …
-
Biodiversity of ciliated protozoa in soil ecosystems and assessment of their potential as bio-indicators of soil quality.
… by terrestrial ecosystems are dependent on soil function. There is an increasing requirement for policy to monitor soils to improve agricultural productivity and protect soil quality. Soil biota, including protists, have fundamental roles in the services provided by soils, and have been …
-
Perennial Grass Based Crop Rotations in Virginia: Effects on Soil Quality, Disease Incidence, and Cotton and Peanut Growth
… Each crop rotation was evaluated for changes in soil quality indicators including soil carbon and nitrogen, water stable soil aggregates, plant available water content, bulk density, cone index values, and soil moisture. Cotton and peanut growth and yield were also observed to evaluate changes in …
-
Crop residue management effects on crop production, greenhouse gases emissions, and soil quality in the Mid-Atlantic USA
… concerns exist about residue removal effects on soil health, greenhouse gases emissions and subsequent crop productivity. The carbon footprint and the crop yield productivity and soil health responses resulting from the removal of crop residues has been studied extensively over the last 20 years, …
-
Long-term Impacts of Annual Cattle Manure and Fertilizer on Soil Quality Under Corn-Soybean Rotation in Eastern South Dakota
… and beef manure have been used to enhance soil quality; however, their impacts under long-term application in corn-soybean rotation need to be evaluated. Nutrient based recommended rates of manure applications on soils are important and also need to be monitored. This study, therefore, was …
-
The Impact of Selected Forage Legumes on Cattle Performance, Forage Production, and Soil Quality, and Evaluation of Legume Persistence under Grazing
<p>Interest in substituting legumes for N fertilizer in beef cattle grazing systems has recently increased with rising fertilizer prices. Legumes are well known for their ability to fix atmospheric N and decrease dependence on input of N fertilizer. However, there are still difficulties associated …
-
Timber Harvesting and Site Preparation Effects on Soil Quality for Loblolly Pine Growing on the Lower Coastal Plain of South Carolina
… of nearly-level topography, poorly-drained soils, and high rainfall, which results in a perched water table in some soils that inundates the surface several times each year. Harvesting timber under wet site conditions often results in extensive soil compaction, rutting, soil displacement, …
Page 1 of 6