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 114 for “"Agricultural fields"”.
-
The influence of agricultural practices on avian abundance in Midwestern agricultural fields
This Thesis was approved for publication on 2017-07-20 at 13:26.
-
Use of remote sensing to estimate soil salinity and evapotranspiration in agricultural fields
… methods to detect soil salinity levels in agricultural lands based on crop conditions and evapotranspiration (ET) using satellite imagery. Elevated levels of soil salinity affect the growth of most crops as well as their appearance. For this research, satellite images of the study area, the …
-
Autonomous robotic system for high throughput plant phenotyping (width estimation) in agricultural fields
U of I Only Restriction Lifted for Item 112989 on 2021-11-27T10:15:27Z.
-
Fate and transport of antibiotic resistant bacteria and resistance genes in artificially drained agricultural fields receiving swine manure application
… their excrement. Application of swine manure to agricultural fields as fertilizer creates a pathway for antibiotic resistant bacteria and their associated resistance genes to enter the environment. This study monitored enterococci, tylosin resistant enterococci and four genes known to confer …
-
A Comparison of Presence Only Suitability Models to Accurately Identify Prehistoric Agricultural Fields in Western New Mexico Through Remote Sensing
… aims to provide greater understanding of the agricultural practices of prehistoric cultures throughout the arid and semi-arid environments of western New Mexico by developing a remote sensing suitability model that will identify prime environments for a specific form of agricultural field, ak …
-
Evaluating Agricultural Best Management Practices to Mitigate Neonicotinoid Transport in Water and Soil
… health when they are transported from agricultural fields. To minimize environmental impact of neonicotinoid pesticides to non-target organisms, it is important to quantify the movement of neonicotinoids from agricultural fields and examine how conventional agricultural practices can be …
-
Effects of conservation agriculture on soil fertility of smallholder farmers' agricultural filelds in Chafukuma, Solwezi district,Zambia
… assessed the effects of CA on soil fertility of agricultural fields in Chafukuma. Paired soil samples were collected from the fields at a depth of 0 - 20 cm. A pair consisted of one sample from a CA managed field that had been cultivated for at least five years and another from a conventional …
-
Effects of conservation agriculture on soil fertility of smallholder farmers' agricultural filelds in Chafukuma, Solwezi district,Zambia
… assessed the effects of CA on soil fertility of agricultural fields in Chafukuma. Paired soil samples were collected from the fields at a depth of 0 - 20 cm. A pair consisted of one sample from a CA managed field that had been cultivated for at least five years and another from a conventional …
-
Dangerous misperceptions with consequences: survival of Eastern cottontails on restored grasslands surrounded by agriculture
… to biodiversity, and the expansion of intensive agricultural practices has negatively affected wildlife populations worldwide. To counteract these effects, large-scale restoration programs have been developed. In the Midwestern United States, where tallgrass prairies have been reduced by >99%, …
-
Modeling and measurement of tile drain controls in intensively managed landscapes
… to improve the productivity of poorly drained agricultural fields. Since a tile drain reduces vadose zone soil moisture by lowering the water table, and its outlets feed directly into streams and ditches, tile flow can affect various hydrologic, biotic and biogeochemical processes in the …
-
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 …
-
Sequestration and Characterization of Soil Organic Carbon for Shelterbelt Agroforestry Systems in Saskatchewan
… species across Saskatchewan compared to adjacent agricultural fields. Soil and litter samples were collected for six major shelterbelt species including green ash (Fraxinus pennsylvanica), hybrid poplar (Populus spp.), Manitoba maple (Acer negundo), white spruce (Picea glauca), Scots pine (Pinus …
-
What do I want to be when I grow up? Exploring influencing factors on high school students’ agricultural career considerations
… to fill the growing number of available jobs in agricultural fields. To address this problem, this study sought to examine the factors which contribute to a high school student’s career considerations. A survey of 817 high school agriculture students in Illinois supplied data for the study. …
-
Individual and Interactive Impacts of Mercury and Agriculture on Reproduction in a Freshwater Turtle, Chelydra serpentina
… of solar exposure, and exploit recently tilled agricultural fields for nesting, presumably because of increased solar exposure and/or easier nest excavation, and the importance of incubation temperature on survival and offspring phenotype. These same disturbed sites are often contaminated by …
-
Crop Depredation by White-Tailed Deer at Sand Lake National Wildlife Refuge, South Dakota
<p>Damage to agricultural crops by white-tailed deer (Odocoileus virginianus) was investigated at Sand Lake National Wild life Refuge (SLNWR), Brown County, South Dakota in 1995 and 1996. To quantify depredation in corn (Zea mays) and soybean (Glycine max) fields on SLNWR and surrounding private …
-
Fate of water and nitrate using drainage water management on tile systems in East-Central Illinois
Nitrate from agricultural fields in the tile-drained upper Midwest is one of the primary causes of the hypoxic zone that forms each summer in the Gulf of Mexico. Drainage water management (DWM) is a potential edge-of-field technique that is being studied as a method to improve soil water management …
-
Ecology of the evening bat (<i>nycticeius humeralis</i>) at the northern edge of the range
… interlaced with waterways and surrounded by agricultural fields. These habitats play an important role in the diet of evening bats. Fourteen orders of insects and two orders of arachnids were found in fecal pellets of evening bats; Coleoptera, Diptera, Hymenoptera, and Hemiptera composed 94% …
-
The Effects of Weather on Wetland Habitat Conditions and Shorebirds During Spring and Fall Migration in Northwest Minnesota
… availability and relative value of private agricultural fields and CRP wetlands to intensively managed impoundments at Agassiz National Wildlife Refuge for migratory shorebirds between seasons and years with variable weather conditions. Habitat conditions between 2002, a wet year, and 2003, …
-
Full season navigation and control of ultra-compact autonomous ag-bot in GPS denied environment
… system for an ultra-lightweight ground robot in agricultural fields. The system is designed for reliable navigation under cluttered canopies using only a 2-D Hokuyo UST-10LX LiDAR and an RTK GPS as the primary sensors for navigation. Its purpose is to ensure that the robot can navigate through …
-
Nesting ecology and conservation of shrubland birds in a fragmented urbanized landscape in northeastern Illinois
… patches in urbanized areas in regenerating agricultural fields. Nesting success/failure may co-vary with factors such as bird species, predator type, weather, microhabitat conditions at the nest, and landscape factors. Although many studies consider avian species-specific differences, most …
Page 1 of 6