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 76 for “"agricultural management"”.
-
Sustainable agricultural management : a systems approach for examining food security tradeoffs
… surrogate models and optimization to understand agricultural trade-offs, and 2) it furthers the discussion on food and water security and sustainable resource management by demonstrating that resource reallocation with sustainability constraints provides revenue gains in certain situations.
-
Evaluating Conservation Agricultural Management for Soil Health Outcomes in Southeastern Virginia
Improving soil health in agricultural soils is vital as the effects of climate change and an increasingly affluent population are putting a strain on land resources. Conservation agricultural practices such as cover cropping and conservation tillage systems (e.g., strip tillage, minimal tillage, or …
-
MODELING IMPACTS OF CLIMATE CHANGE AND AGRICULTURAL MANAGEMENT ON WATERSHED OUTPUTS IN MIDWESTERN USA
… data such as LULC, soil, crop rotation and other management data were processed through these HRUs. The SWAT model was then calibrated/validated for the Raccoon River watershed in Iowa for 2002 to 2010 and the Big Creek River watershed in Illinois for 2000 to 2003. SWAT was able to replicate …
-
Avian and Aquatic Invertebrate Abundance on Three Agricultural Management Systems in Eastern South Dakota
… study was to evaluate the impacts of different agricultural management systems on wildlife by determining avian and aquatic invertebrate abundance on a conventional (CON), organic (ORG), and transitional no-till (TNT) farming system. Waterfowl pair abundance varied for individual species on all …
-
Simulated effects of agricultural management systems on potential nonpoint source loading of nitrate and pesticides
… of tillage, cropping, and nutrient and pesticide management practices. The study area is in Richmond County in the Coastal Plain region of Virginia. Alternative management scenarios were based on crop management systems common to the area. Average annual loads from 35-year simulations were used in …
-
Estimation of the global carbon fluxes due to agricultural management activities using a land surface model (ISAM)
Agricultural activities contribute to global greenhouse gas (GHG) emissions and climate. The worldwide hike in the food demand due to the rapidly growing population over time has intensified agricultural activities, resulting in a significant amount of GHG emissions (e.g., CO2, CH4, and N2O). …
-
A multiple objective approach to evaluate economic and environmental impacts of agricultural management systems from a sustainable development perspective
… through a multiple criteria evaluation of agricultural management systems in Richmond County, Virginia is presented. Various interpretations of the concept of sustainable development are found to be based on Six "E" considerations: Economic, Energy, Environmental, Ecological, Equity, and …
-
Mapping agroecosystem management practices from space and quantifying their impacts on crop productivity
… and environmentally sustainable. Effective agricultural management is essential for sustaining crop production under variable climate conditions and informing sound policy decisions. However, information on field-level agricultural management practices, including cover cropping and planting …
-
Modeling and analysis of management for an agro-ecosystem using an agent-based model interface for the soil and water assessment tool (SWAT)
… of ecosystems, economies, and public health. Agricultural production in the watershed has been identified as the dominant factor contributing to poor water quality. Substantial investment by communities, governments, and research is dedicated to identifying appropriate agricultural management …
-
Defining functional microbiomes of wheat (Triticum aestivum) and maize (Zea mays), under regenerative management practices, in South Africa
… dynamics of soil microbiomes under regenerative agricultural systems remain poorly understood, particularly within semi-arid South African environments. Understanding how agricultural management practices shape these communities is critical to designing resilient and sustainable food production …
-
Upland grassland agri-environment impacts on invertebrate biodiversity
… declines in invertebrate abundance linked to agricultural intensification and land-use change have been documented. There has been a widespread lack of environmental monitoring and assessment of agri-environment schemes, with a lack of evidence supporting clear benefits of agri-environment …
-
Multi-temporal remote sensing for estimation of plant available water-holding capacity of soil
Soil maps are fundamental for agricultural management. However, mapping soils is a difficult task because of their high spatial variability and the challenge of choosing representative field sites for soil analysis. Globally, soil information is becoming a prioritized agenda, due to the increasing …
-
Long-term Residue and Water Management Effects on Soil Respiration and Soil Aggregate Stability in a Wheat-soybean, Double-crop System in Eastern Arkansas
… in soil as organic matter through sustainable agricultural management practices can both remove atmospheric C and improve soil quality. The objective of this study was to evaluate the long-term effects of water management (irrigation and dryland), residue management [burn and no-burn, …
-
Interactions between cover crop residue and microbial community affect weed suppression
… interest in developing alternative methods for agricultural weed control. Incorporation of cover crop residues is an important approach that contributes to alternative weed management systems. The cover crop residue-associated allelochemicals can inhibit weed germination, growth and production. …
-
The landscape ecology of brown hares and European rabbits in pastures in the north east of England
… in the UK, may have been caused by changes in agricultural management. This study aims to identify hare distribution, density, habitat selection and demography in grasslands in order to benefit their future conservation. In addition, this study aims to investigate the impact of current …
-
A computer simulation model for investigating the effect of land application of sludge on runoff water quality
… model for Chemicals, Runoff, and Erosion from Agricultural Management Systems (CREAMS) model, was developed to simulate the nitrogen (N) transformations and subsequent nutrient transport processes which occur in the soil following organic waste applications. CREAMS-NT accounts for nutrient …
-
Soil microbial community dynamics in response to cover crop implementation and P fertilizer management
… and serve a key role in maintaining productive agricultural systems. There are many ways to assess soil health and how soil systems respond to agricultural management practices. Some of these methods target either recalcitrant or labile nutrient pools within soils, while others focus on the …
Page 1 of 4