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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:: weedy, rhizornateous perennial grass introduced in the United States in relatively recent years, The

The influence on winter wheat yields of competitive weedy species

Creator:: Albeke, William Edgar
Abstract:: A study was conducted to compare the competitive ability with weeds of the short-strawed Gaines variety wheat and taller growing varieties under different fertility levels at three experimental locations. The experiments were designed so that the effects of variety, nitrogen fertilization, and weed competition could be evaluated. The interactions between...
Resource Type:: Masters Thesis
Full Text:: chess, and reports it occurs in every state except the four most southern states (12, p. 55

Influence of the removal of weed competition by herbicides in establishing subterranean clover, Trifolium subterraneum L.

Creator:: López, Hernán
Resource Type:: Masters Thesis
Full Text:: provided by the Division of Forage Crop and Diseases, Bureau of Plant Industry, United States

Establishment of subterranean clover (Trifolium subterraneum L.) on medusahead, (Taeniatherum asperum (sim.) Nevski) infested ranges in western Oregon

Creator:: Vigil, Frederick Rudolph
Abstract:: An experiment was conducted to determine the best method to establish subterranean clover on medusahead infested ranges in Western Oregon. Secondary objectives of this study were to determind the effects of management treatments on (a) subterranean clover density, (b) density of medusahead and other vegetation, and (c) yield of subterranean...
Resource Type:: Masters Thesis
Full Text:: Division of Forage Crops and Diseases, Bureau of Plant In- dustry, United States Department of Agriculture

The influence of herbicides, phosphorus fertilization, and mechanical and chemical seedbed preparation on the establishment of alfalfa (Medicago sativa L.) and birdsfoot trefoil (Lotus conrniculatus L.)

Creator:: Valdes Lamar, Ramon
Abstract:: Initial establishment of legume forage crops is of prime importance in determining future forage and seed production. The objective of this study was to determine the influence of herbicides, phosphorus fertilization, and seedbed preparation on the establishment of alfalfa and birdsfoot trefoil. Experiments were designed to study the influence of...
Resource Type:: Masters Thesis
Full Text:: regarded as one of the world's most valuable cultivated forage crops. In the United States, alfalfa is

The effect of quackgrass (Agropyron repens) rhizomes on germination and development of alfalfa

Creator:: Omid, Ahmad
Resource Type:: Dissertation
Full Text:: (13, 35; 19, 232; 46, 51). A number of species of Agropyron occur in the United States, most of

The effect of EPTC on barnyard grass

Creator:: Dawson, Jean Howard
Resource Type:: Dissertation
Full Text:: ON BARNYAP D GRASS JEAN HOWARD DAWSON A THESIS submitted to OREGON STATE UNIVERSITY in

The effects of CIPC vapors on dodder (Cuscuta spp.) seedlings

Creator:: Slater, Clarence Harold
Abstract:: The use of CIPC (isopropyl N-(3-chlorophenyl) carbamate) to control dodder (Cuscuta spp.) in alfalfa is an established practice. A rate of six pounds per acre applied to moist soil has given good dodder control lasting from four to six weeks. The purpose of this study was to determine the effect...
Resource Type:: Masters Thesis
Full Text:: DODDER (CUSCUTA SPP.) SEEDLINGS by CLARENCE HAROLD SLATER A THESIS submitted to OREGON STATE

The influence of selected environmental factors on diuron toxicity to winter wheat

Creator:: Homesley, Wylie Buress
Abstract:: Previous work has shown that diuron (3-(3, 4- dichlorophenyl)-1, 1-dimethylurea) is less toxic to fall-planted wheat than to wheat planted in the spring. Diuron has been a significant factor in increasing yields of winter wheat grown in Oregon's Willamette Valley. The influence of several selected environmental factors on diuron toxicity...
Resource Type:: Dissertation
Full Text:: the United. States. Under normal rainfall conditions leaching was not a factor in removal. It was

Relationship of nitrogen level to medusahead, Taeniatherum asperum (Sim.), competition with wheatgrass and silica content

Creator:: Brown, Dean Allen
Abstract:: Studies were conducted to determine the competitive ability of medusahead, Taeniatherum asperum (Sim.), for nitrogen when grown in association with perennial range grass species. The method used to determine this competitive ability was to compare the dry weight, percent nitrogen, and total nitrogen of medusahead and perennial wheatgrass species growing...
Resource Type:: Masters Thesis
Full Text:: of medusahead in the United States in 1887 near Roseburg, Oregon, it has spread until it now

ScholarsArchive@OSU

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

The influence on winter wheat yields of competitive weedy species

Influence of the removal of weed competition by herbicides in establishing subterranean clover, Trifolium subterraneum L.

Establishment of subterranean clover (Trifolium subterraneum L.) on medusahead, (Taeniatherum asperum (sim.) Nevski) infested ranges in western Oregon

The influence of herbicides, phosphorus fertilization, and mechanical and chemical seedbed preparation on the establishment of alfalfa (Medicago sativa L.) and birdsfoot trefoil (Lotus conrniculatus L.)

The effect of quackgrass (Agropyron repens) rhizomes on germination and development of alfalfa

The effect of EPTC on barnyard grass

The effects of CIPC vapors on dodder (Cuscuta spp.) seedlings

The influence of selected environmental factors on diuron toxicity to winter wheat

Relationship of nitrogen level to medusahead, Taeniatherum asperum (Sim.), competition with wheatgrass and silica content

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