Index Catalog // ScholarsArchive@OSU

Integrated control of tansy ragwort (Senecio jacobaea L.)

Creator:: Powers Evans, Claudia L.
Resource Type:: Masters Thesis
Full Text:: .) AN ABSTRACT OF THE THESIS OF Claudia L. Powers Evans in Crop Science for the degree of Master of

Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim

Creator:: Ott, Pablo
Abstract:: Volunteer winter wheat (Triticum aestivum 'Daws') severely suppressed growth of fall-planted alfalfa (Medicago sativa (L.) 'Vernal') seedlings. Wheat competition began soon after alfalfa emerged and continued until the first forage harvest the following May. Alfalfa yield at the first cutting was reduced by 1% for each day volunteer wheat was...
Resource Type:: Masters Thesis
Full Text:: (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Creator:: Thill, Donald Cecil, 1950-
Abstract:: The influence of certain environmental and edaphic factors on the germination and emergence of downy brome (Bromus tectorum L.) was investigated in the laboratory. A preliminary study was conducted to determine the osmotic stability of mannitol and polyethylene glycol 20,000 (PEG) solutions, which are commonly used to simulate water stress...
Resource Type:: Dissertation
Full Text:: factors on germination and emergence of Bromus tectorum L. AN ABSTRACT OF THE THESIS OF Donald Cecil

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Creator:: Tanphiphat, Karin
Abstract:: Tuber oatgrass (Arrhenatherum elatius (L.) Presl. var. bulbosum (Willd.) Spenn.) is a perennial grass that often becomes a weed problem in Western Oregon. Control efforts using glyphosate often give unsatisfactory results. The effects of several factors on development of tuber oatgrass were investigated. Long days and cool temperatures (16/8h, 20/10C...
Resource Type:: Dissertation
Full Text:: elatius (L.) presl. var. Bulbosum (willd.) spenn.) AN ABSTRACT OF THE THESIS OF Karin Tanphiphat for

Manipulation of assimilate transport patterns as a method of studying glyphosate translocation in tall morningglory [Ipomoea purpurea (L.) Roth]

Creator:: Dewey, Steven A.
Resource Type:: Dissertation
Full Text:: of Studying Glyphosate Translocation in Tall Morning Glory (Ipomoea Purpurea (L.) Roth) AN ABSTRACT

The influence of various surfactant-herbicide ratios in three volumes of water on the toxicity of dalapon, paraquat, and terbacil to winter oats (Avena sativa L.)

Creator:: Migchelbrink, Kenneth John
Abstract:: Several studies were conducted to determine if a more consistent predictor of phytotoxicity to winter oats could be obtained with a surfactant-herbicide ratio or a per-unit-volume concentration of surfactant, independent of volume. The herbicides tested were 2,2-dichloropropionic acid (dalapon), 1,1'-dimethyl-4, 4'-bipyridinium (paraquat), and 3-tert-butyl-5-chloro-6-methyluracil (terbacil) with the nonionic surfactant X-77...
Resource Type:: Masters Thesis
Full Text:: three volumes of water on the toxicity of dalapon, paraquat, and terbacil to winter oats (Avena sativa L

Influence of weed density on efficacy of two soil-applied herbicides

Creator:: Burrill, L. C.
Abstract:: Several studies were conducted to determine the effect of weed density on herbicide efficacy. Diuron [3-(3, 4- dichlorophenyl) -1, 1- dimethylurea] was tested on various densities of Italian ryegrass (Lolium multiflorum Lam. ) under greenhouse and field conditions. Cycloate (S-ethyl N-ethylthiocyclohexanecarbamate) was tested on green foxtail (Setaria viridis (L. )...
Resource Type:: Masters Thesis
Full Text:: MASTER OF SCIENCE (Name) (Degree) in AGRONOMIC CROP SCIENCE presented on a,,,L.4 /9Z3 (Major) (Date

Factors affecting selective control of wild oat and downy brome in wheat by trifluralin

Creator:: Aldridge, Jack Clifton
Abstract:: Trifluralin (a, a, a - trifluoro -2, 6 -dinitro-N, N-dipropyl-ptoluidine) is effective in controlling downy brome (Bromus tectorum L.) and wild oat (Avena fatua L.) but does not severely affect the growth of wheat (Triticum aestivum L.). Studies were conducted using germination chamber and greenhouse facilities to investigate possible factors...
Resource Type:: Masters Thesis
Full Text:: little or no effect on the other organ was observed. Oliver, L. R. and R. E. Evans. 1968. Inhibition of

Competitive effects and control of weeds in winter wheat on the Anatolian Plateau, Turkey

Creator:: Tezel, Cengiz
Abstract:: Wheat is the major crop produced on the Anatolian Plateau of Turkey. Annual weeds cause large yields reductions in the wheat crop. Several formulations of 2, 4-D and mixtures of 2, 4-D and 2,4, 5-T are the only materials currently available for use in Turkey on wheat. The objective of...
Resource Type:: Masters Thesis
Full Text:: against two major weed species, yellowweed (Boreava orientalis L.) and cornflower (Centaurea cyanus L

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

Creator:: Majek, Bradley A.
Abstract:: In previous research in Europe, asulam (methyl sulfanilylcarbamate) was found to be a potentially useful herbicide for controlling broadleaf dock Rumex obtusifolius L. ) in permanent pastures. Asulam was also reported to have a low margin of safety when used on common pasture species. Field studies were conducted in western...
Resource Type:: Masters Thesis
Full Text:: broadleaf dock Rumex obtusifolius L. ) in permanent pastures. Asulam was also reported to have a low margin

The response of tomatoes to atrazine as affected by magnesium and photoperiod

Creator:: Brenchley, Ronald Glenn
Abstract:: Studies were conducted to determine the nature of the interaction between atrazine (2-chloro-4-ethylamino-6-isopropylaminos- triazine) and magnesium on tomatoes. This interaction was studied under two light regimes: continuous light and a 12-hour photoperiod. Tomato plants were grown in sand cultures at three levels of magnesium fertilization. Four weeks after planting, atrazine...
Resource Type:: Dissertation
Full Text:: , 4-dichloropheny1)-1-methoxy-l-methyl- urea), and bromacil (5-bromo-3-sec-butyl -6-methyluracil

Biology of Bromus rigidus : interference in winter wheat, seed longevity in the soil, and vernalization requirements for flowering

Creator:: Gleichsner, Jean Ann
Resource Type:: Dissertation
Full Text:: ., R. A. Evans, and B. L. Kay. 1973. Temperature requirements for seed germination in an annual-type

Some physiological and biochemical aspects of haloxyfop herbicidal activity alone or mixed with dicamba

Creator:: Alvarado, Renan A.
Resource Type:: Dissertation
Full Text:: approved: ( Redacted for Privacy Arnold P. Appleby 747- Soybean (Glvcine max L. Merr. 'Evans') was more

The persistence of five herbicides in Hawaiian soil

Creator:: Kitagawa, Yukio
Abstract:: The persistence of DCPA, trifluralin, diphenamid, diuron, and prometryne was studied in three soils which were located at the Kula, Poamoho, and Waimanalo Experiment Stations. The order of decreasing persistency was diuron, prometryne, trifluralin, DCPA, and diphenamid. Diuron and prometryne activities were recorded for at least six months and diuron...
Resource Type:: Masters Thesis
Full Text:: . Experiments with herbicides in soils. Weeds 8:12-18. 1960. 10. Dalton, R. L. , A. W. Evans and R. C. Rhodes

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

Creator:: Colbert, Floyd Oral
Resource Type:: Dissertation
Full Text:: between terbutryn and plants, barley (Hordeum vulgare L., var. Firlsbeck III) was grown in nutrient

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

Creator:: Fechtig, Allen David
Abstract:: After nearly 20 years of commercial use in orchards without apparent tree injury in Oregon and Washington, 2,4-D [(2,4-dichlorophenoxy) acetic acid] was reported in 1970 to cause injury to apple and pear trees in Washington. In the early 1970's, there was widespread concern among growers, researchers, and processors in the...
Resource Type:: Dissertation
Full Text:: retirement. Appreciation is also expressed to Dr. Ralph Garren and Dr. Harold Evans for the use of

Indole-3-acetic acid in (2-chloroethyl)-trimethylammonium chloride-treated club wheat (Triticum aestivum compactum)

Creator:: Gould, Walter Leonard
Abstract:: Studies were conducted to verify the existence of IAA in wheat seedlings and to determine the effect of (2-chloroethyl)-trimethyl-ammonium chloride (CCC) on the IAA content of club wheat, Triticum aestivum compactum, variety Omar. The shoots of CCC-treated and untreated wheat plants were extracted with ethanol, the plant extract purified, separated...
Resource Type:: Dissertation
Full Text:: seedlings was estimated at L.5-3. O X I0-3 micrograms per gram fresh weight. A comparison of the growth

The influence of magnesium on the toxicity of atrazine

Creator:: Brenchley, Ronald Glenn
Abstract:: Atrazine is an asymmetrical s-triazine herbicide used pre- and post emergence for weed control in many crops. Triazine herbicides have been used in the Pacific-Northwest for weed control in orchard crops. Under certain conditions where trees were grown in nutrient deficient areas, it was noted that toxic symptoms due to...
Resource Type:: Masters Thesis
Full Text:: . Evans and Norman I. Bishop of the Plant Physiology Department for valuable counsel and suggestions

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

Creator:: Diop, Amadou Makhtar
Abstract:: Field, screenhouse, and laboratory experiments were conducted to study weed interference in rice grown on hydromorphic soils at the International Institute of Tropical Agriculture (IITA) at Ibadan, Nigeria. Rice and weeds emerged at the same time, 1 week after planting. Weed dry weight was significantly reduced when the crop was...
Resource Type:: Dissertation
Full Text:: . Williams, who served in my committee in the first part of this program, and M. L. Roush for accepting to

Interaction between glyphosate and certain s-triazine herbicides

Creator:: Somabhi, Montien
Abstract:: Investigations were made in the field, greenhouse, growth chamber, and laboratory to: (a) observe the general activity of N- (phosphonomethyl)glycine (glyphosate); (b) determine the extent of its interaction with certain s-triazine herbicides; and (c) find an explanation for such an interaction. Greenhouse and growth chamber studies substantiated other observations that...
Resource Type:: Dissertation
Full Text:: treatment still caused excessive injury to cotton (Gossypium hirsutum L. ) and soy- beans (Glycine max (L

ScholarsArchive@OSU

Integrated control of tansy ragwort (Senecio jacobaea L.)

Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Manipulation of assimilate transport patterns as a method of studying glyphosate translocation in tall morningglory [Ipomoea purpurea (L.) Roth]

The influence of various surfactant-herbicide ratios in three volumes of water on the toxicity of dalapon, paraquat, and terbacil to winter oats (Avena sativa L.)

Influence of weed density on efficacy of two soil-applied herbicides

Factors affecting selective control of wild oat and downy brome in wheat by trifluralin

Competitive effects and control of weeds in winter wheat on the Anatolian Plateau, Turkey

Asulam in western Oregon pastures : broadleaf dock control and tolerance of important grass and legume species

The response of tomatoes to atrazine as affected by magnesium and photoperiod

Biology of Bromus rigidus : interference in winter wheat, seed longevity in the soil, and vernalization requirements for flowering

Some physiological and biochemical aspects of haloxyfop herbicidal activity alone or mixed with dicamba

The persistence of five herbicides in Hawaiian soil

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

Indole-3-acetic acid in (2-chloroethyl)-trimethylammonium chloride-treated club wheat (Triticum aestivum compactum)

The influence of magnesium on the toxicity of atrazine

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

Interaction between glyphosate and certain s-triazine herbicides

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