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 83 for “"Bromus"”.
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Efecto de la fertilización nitrogenada, del riego y de la defoliación sobre el crecimiento y desarrollo de Bromus catharticus y Bromus parodii
La cebadilla criolla y la cebadilla intermedia son especies con una significativa producción de forraje de una elevada calidad nutricional. La diferencia en longevidad que existe entre ambas especies origina también diferencias del momento en que expresan su mayor potencial de producción forrajero. …
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DNA systematic studies in the genus Bromus L. (Poaceae)
… relationships between different subgenera of Bromus, a genus of over 100 diploid and polyploid species. Variation in chloroplast DNA (cpDNA) fragment pattern was examined, initially, in 15 species of subgenera Festucaria and Ceratochloa. Subsequently, cpDNA restriction site variation was …
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Interactions between Bromus tectorum, grasshoppers, and native plants in sagebrush steppe communities
Invasion by the exotic grass Bromus tectorum L. (cheatgrass) has produced widespread, persistent changes in the Intermountain West. As a result of this and other disturbances, sagebrush shrubland is among North America's most imperiled ecosystems. Restoration of B. tectorum-infested areas has often …
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Investigations of Bromus tectorum: restoration strategies and interactions with arbuscular mycorrhizal fungi
Bromus tectorum (L) (cheatgrass, downy brome), one of the most pervasive weeds in the United States, reduces native species diversity and transforms habitats. I conducted four experiments designed to better understand B. tectorum ecology and evaluate control and restoration strategies. I measured …
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Insights in plant ecology from Bromus tectorum invasion in the Great Basin, USA
… native ecosystems. This dissertation examines Bromus tectorum invasion in the Great Basin to increase scientific understanding of invasion dynamics and to provide rigorous information to enhance land management. First, a conceptual model of invasion, the Triangle Model for Evaluating Species …
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Maturity study of some northern and southern varieties of bromegrass (Bromus inermis L.)
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Farm Crops, 1959
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A Hydrothermal After-ripening Time Model of Seed Dormancy Loss in Bromus tectorum
… field studies were conducted using seeds of <em>Bromus tectorum</em>. These studies identified four important ranges of water potential that influence the rate of dormancy loss. The ranges are identified as follows: seeds experiencing soil water potentials seeds experiencing soil water potentials …
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Compatibility, Yield, and Quality of Matua Prairie Grass, Bromus willdenowii (Kunth), with Legumes
Matua prairie grass has a potential to extend the grazing season in Virginia due to its higher early spring and fall production. However, little is known about the compatibility of Matua prairie grass with legumes or the effects of legumes on the yield and quality of Matua prairie grass/legume …
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Developing Techniques to Quantify Phenological Development of Smooth Brome (Bromus inermis Leyss.): Sampling Variability
… of invasive grasses such as smooth brome (Bromus inermis Leyss.) and Kentucky bluegrass (Poa pratensis L.) is a critical issue for land managers in the Northern Great Plains. Recent surveys of US Fish and Wildlife Service (USFWS) grasslands revealed fragments of native prairie and …
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Epidemiology of Ustilago bullata Berk. on Bromus tectorum L. and Implication for Biological Control
… biological control agent for cheatgrass (Bromus tectorum L.). The effects of temperature and nutrients on pathogen teliospore germination behavior and the effects of temperature on host seed germination were examined. The effects of temperature on sporidial proliferation, host infection in …
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Effects of elevated carbon dioxide on Bromus rubens and nutritional consequences for the desert tortoise
… agassizii), using a common diet component, Bromus rubens. Nitrogen balance was monitored for tortoises fed pelleted diets reflecting the nitrogen levels of Bromus plants grown under elevated and ambient CO2 conditions, with varying potassium levels (3.5% and 1.4% DWB). Nitrogen content in …
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Restoring semi-arid lands with superabsorbent polymers under reduced precipitation and threat of Bromus tectorum invasion
… invasion. The invasive winter annual grass, Bromus tectorum (B. tectorum), is particularly competitive in disturbed semi-arid areas, has invaded tens of millions of hectares throughout the western US, and its range is projected to expand under predicted climate scenarios. Increasing soil …
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