Index Catalog // ScholarsArchive@OSU

The fertilization of irrigated grass and grass-clover pasture swards with emphasis on the rate and frequency of nitrogen applications

Creator:: Gardner, Ernest Hugh
Resource Type:: Masters Thesis
Full Text:: APPLICATIONS by ERNEST IitZH GARDNER A submitted to OREGON STATE COLLEGE in partial fulfillment of

Floret fertility and seed yield in selected perennial ryegrass cultivars as affected by time and rate of nitrogen (N) application

Creator:: Gangi, Ali Salih
Abstract:: To increase efficiency of seed production, it is important to understand the effects of nitrogen (N) fertilizer rate and time of application. In particular, the effects on floret fertility should be examined since only a small proportion of florets actually produce harvestable seed. For these reasons, experiments were conducted in...
Resource Type:: Dissertation
Full Text:: efficiency of seed production, it is important to understand the effects of nitrogen (N) fertilizer rate and

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

Creator:: Lee, William O., 1911-
Abstract:: A study was conducted on German velvetgrass (Holcus mollis L.), a weedy, rhizomateous perennial grass introduced in the United States in relatively recent years, The purpose of this study was to learn more about its distribution, growth habits, and control under conditions found in Western Oregon. German velvetgrass infestations of...
Resource Type:: Dissertation
Full Text:: Distribution, Growth Habits, and Control of Gerrnan Velvet Grass (Holcus rnol.lis L. ) in Western Oregon

The seasonal yield, quality, and utilization of Trifolium subterraneum in mixture with festuca arundinacea and Lolium perenne in western Oregon

Creator:: Sanders, Kenneth D. (Kenneth Dwayne), 1940-
Abstract:: In 1959, a large scale grazing study in western Oregon was initiated to compare the value of perennial ryegrass (Lolium perenne L.) with subclover (Trifolium subterraneum L.) and tall fescue (Festuca arundinacea Schreb.) with subclover, and to evaluate common use grazing on them. The present investigation was undertaken to determine...
Resource Type:: Masters Thesis
Full Text:: AND LOLIUM PERENNE IN WESTERN OREGON Abstract approve (Ma3or Professor) In 1959, a large scale

Available phosphate tests on certain Oregon soil types

Creator:: Fogarty, Earl Rosendale
Resource Type:: Masters Thesis
Full Text:: Available phosphate tests on certain Oregon soil types

An economic evaluation of wheat fertilization strategies in North Central Oregon

Creator:: Ahmed, Awadelkarim Hamid
Resource Type:: Dissertation
Full Text:: . Oregon State Cooperative Extension Service. 1976. "Fertilizer Guide for Winter Wheat (Non-irrigated

Enhanced efficiency nitrogen fertilizers for nitrogen management in the Columbia Basin, Oregon

Creator:: Holcomb, Jess Charles
Abstract:: Ammonia (NH₃) volatilization can result in a substantial amount of surface applied nitrogen (N) being lost into the atmosphere, making it an environmental pollutant as well as reducing plant-available N. However, N can also be easily lost from the soil through leaching, and nitrous oxide (NO₂). Enhanced efficiency N fertilizers...
Resource Type:: Masters Thesis
Full Text:: , Oregon Abstract approved: Donald A. Horneck Dan M. Sullivan Ammonia (NH3

Influence of nitrogen fertilization management on the bread making quality of different wheat genotypes

Creator:: Derényi, Marina Castro
Abstract:: Breadmaking quality is an important criterion in breeding and development of hard wheat (Triticum aestivum L.) cultivars. Improvements in N management are needed to produce superior quality grain and satisfy market demands for protein content. Field experiments with three hard red and two hard white spring wheat cultivars were conducted...
Resource Type:: Masters Thesis
Full Text:: Pendleton, Oregon. Nitrogen rates were varied from 0 to 250 kg N ha-1, applied all at planting, or split

Effects of residual and applied nitrogen on Nugaines wheat

Creator:: Laopirojana, Pojanee
Abstract:: A study was made to evaluate the effect of different rates of N fertilization on Nugaines wheat. The variable N treatments provided different N regimes as a basis for evaluating potential diagnostic tests for assessing the N status of the wheat plant. The crop was grown in Lane county during...
Resource Type:: Masters Thesis
Full Text:: other yield limiting factors (Fertilizer recommendation sheet 9, Oregon State University Agricultural

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Creator:: Schantz, Merilynn C.
Abstract:: Biological plant invasions are diminishing the ecological integrity and function of ecosystems worldwide. A primary example of this is in the Great Basin of the United States, where invasive annual grasses, like cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae L. Nevski), are dominating many sagebrush-steppe ecosystems. In these invaded...
Resource Type:: Dissertation
Full Text:: experiments that were evaluated on seeded annual grass invaded sagebrush-steppe ecosystems in eastern Oregon

ScholarsArchive@OSU

The fertilization of irrigated grass and grass-clover pasture swards with emphasis on the rate and frequency of nitrogen applications

Floret fertility and seed yield in selected perennial ryegrass cultivars as affected by time and rate of nitrogen (N) application

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

The seasonal yield, quality, and utilization of Trifolium subterraneum in mixture with festuca arundinacea and Lolium perenne in western Oregon

Available phosphate tests on certain Oregon soil types

An economic evaluation of wheat fertilization strategies in North Central Oregon

Enhanced efficiency nitrogen fertilizers for nitrogen management in the Columbia Basin, Oregon

Influence of nitrogen fertilization management on the bread making quality of different wheat genotypes

Effects of residual and applied nitrogen on Nugaines wheat

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

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