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 122 for “"Ground Cover"”.
-
Autonomous ground cover clearing utilizing a robotic wheel loader
The ongoing need to remove ground covering such as sand, dirt and snow poses dangers to workers, from fatigue and repetitive work injures, to direct harm in hazardous locations. To address these challenges a robotic system capable of autonomous clearing of non-compacted material is presented, …
-
The influence of herbicides on selected ground cover plants
Thesis (M.S.)--Michigan State University. Dept. of Horticulture, 1964
-
Towards Systematic Selection of Terrain- and Ground Cover-Specific LiDAR Filtering Parameters
<p>Accurate automated classification of LiDAR point clouds is a well-known problem and proper parameterization of the classification algorithm is essential to creating useful bare-earth terrain models. Parameterization is particularly important in areas characterized by extremely low relief, such …
-
Five-year fertilizer and ground cover effects on surface-mine soils and pine growth
… soil fertility and competition from herbaceous ground cover, must be overcome. The effect of cultural treatments on the growth of three commercial pine species on reclaimed surface-mined land in southwestern Virginia was studied. In June, 1981, containerized seedlings of loblolly (Pinus taeda …
-
Rye and vetch intercrops for reducing corn in fertilizer requirements and providing ground cover in the Mid-Atlantic region
Winter-annual cover crops reduce soil erosion by providing ground cover, while producing energy-cheap N for a subsequent crop. Incorporated cover crops or those left as no-till mulch can enhance soil structure and water infiltration. A series of studies was designed to test agronomic advantages of …
-
Impacts of Spring-interseeded Cover Crops on Late-emerging Weed Suppression and Ground Cover in Corn (Zea mays L.) Production Systems
… suppression. Corn production that incorporates a cover crop as an alternative weed control strategy and ground cover may support a sustainable system that is less dependent on herbicidal weed control. In addition, the cover crop may be used as a fall forage, act as a slow release fertilizer source …
-
Comparison of techniques for estimating pasture herbage mass and productive ground cover for Lakota prairie grass, Kentucky 31 endophyte free tall fescue, Kentucky 31 endophyte infected tall fescue and Quantum 542 tall fescue grazed by stocker steers
… measured with a disc meter. In 2005, productive ground cover was assessed using visual evaluation techniques, point quadrat method, and digital imagery quantified with terrestrial remote sensing. Forages were established September 2002 and grazing was initiated in July of 2003. Experimental …
-
Reclamation of surface-mined forest land in the southern Appalachians
… not hindered by competition from an herbaceous ground cover. Several experiments were conducted to develop practical recommendations for post-SMCRA reclamation of surface-mined forest land to create these desirable minesoil conditions. An experiment designed to evaluate the effect of two …
-
Using Winter Annual Cover Crops in a Virginia No-till Cotton Production System
… erosion and protect the soil. A winter annual cover crop could alleviate erosion between cotton crops. Field experiments were conducted to evaluate selected winter annual cover crops for biomass production, ground cover, and N assimilation. The cover crop treatments were monitored under no-till …
-
Hydroseeding pine-grass-legume mixtures for erosion control and reforestation of mine spoils
… four nurse crops and three fertilizer levels on ground cover, spoil erosion, and establishment of hydroseeded pines on a recontoured strip-mine in southwestern Virginia were also studied. In the greenhouse experiment, germination was highest (12, 55, and 34% for P. strobus, P. virginiana, and P. …
-
Plant Community Responses to Long-Term Seasonal Bison Grazing in the Dry Mixed Grassland of Saskatchewan
… species diversity, evenness and richness; bare ground cover; and indicator species in three treatment areas. The results show there is a statistically significant difference in plant community response to seasonal bison grazing. Notably, species diversity, species evenness, and bare ground cover …
-
Reproductive Success and Brood Habitat Use of Greater Prairie Chickens and Sharp-Tailed Grouse on the Fort Pierre National Grassland of Central South Dakota
… mean vegetation height of 32 cm (n=8), and with ground cover of 18% grass and 10% forbs in 2004. During 2005, PC broods used habitats with a mean vegetation height of 38 cm (n = 10) and 18% grass and 5% forb ground cover. ST broods used habitats with a mean vegetation height of 43 cm during both …
-
Evaluation and breeding of Hilaria belangeri for turfgrass use.
… N ha⁻¹ yr⁻¹ produced the best color and highest ground cover. Control (uncut) plots exhibited low vigor and color. Broad-sense (h²(b)) and narrow-sense (h²(n)) heritability estimates were computed for measured and rated characters on clones and their open-pollination progeny grown at Safford (S) …
-
Mapping desertification: towards an approach for mapping regional land degradation in drylands
… distinguishing the three states (perennial plant cover and bare ground cover) were identified. A total of 16 remote sensing variables were determined for the project area. Five vegetation indices (NDVI, EVI, SAVI, OSAVI, MSAVI), as well as spectral mixture analysis (SMA) cover estimates for …
-
Modeling fate and transport of Cryptosporidium parvum and rotavirus in overland flow
… and duration, slope, soil type and surface cover conditions significantly affect the transport of C. parvum oocyst and rotavirus in surface flow. Laboratory experiments conducted at the University of Illinois have demonstrated C. parvum oocysts and rotavirus transport is greatly influenced …
-
Vegetative communities as indicators of ground beetle (Coleoptera: Carabidae) diversity
… of a diverse group of invertebrates—the ground beetles (Coleoptera: Carabidae). Specifically, that (1) land units of the same classification contained similar carabid species assemblages and that (2) differences in species structure were correlated with variation in land unit …
-
Arthropod assemblages on longleaf pines: a possible link between the red-cockaded woodpecker and groundcover vegetation
… which RCW reproductive success is linked to the groundcover composition of the forest (which is a reflection of the forest's fire history). This is possible because it has been shown that much of the arthropod community found on longleaf pines originates from the forest floor. If the arthropod …
-
Avian population densities, habitat use, and foraging ecology in thinned and unthinned hardwood forests in Southwestern Virginia
… shrubs, saplings, trees, and snags, canopy and ground cover, and foliage volume were the structural variables most influenced by thinning. Populations of shrub/understory birds were higher in thinned stands than unthinned stands. Canopy-dwelling species showed variable population responses to …
-
Phenomics enabled genetic dissection of complex traits in wheat breeding
… and processing pipelines, we quantified lodging, ground cover, and crop growth rate of 1745 advanced spring wheat lines at multiple time-points over the course of three field seasons at three field sites in South Asia. High correlations of digital measures to visual estimates and superior …
Page 1 of 7