Index Catalog // ScholarsArchive@OSU

Interference of annual weeds in seedling alfalfa

Creator:: Fischer, Albert J.
Abstract:: The interference of barnyardgrass (Echinochloa crusgalli), pigweed (Amaranthus retroflexus),downy brome (Bromus tectorum),and tumble mustard (Sisymbrium altissimum) with alfalfa was studied. Alfalfa was seeded with each of the four weeds on August 14 and September 15, 1981, and on April 13, 1982. Alfalfa also was seeded on August 27, 1981, with...
Resource Type:: Masters Thesis
Full Text:: ANNUAL WEEDS IN SEEDLING ALFALFA by Albert J. Fischer A THESIS submitted to Oregon State University

Factors influencing the effectiveness of activated carbon used to protect newly-seeded grasses from herbicides

Creator:: Burr, Ronald J.
Abstract:: Previous research has shown that activated carbon is effective in inactivating certain herbicides applied as a preemergence treatment. Studies were conducted in the greenhouse to determine the influence of various factors on the ability of activated carbon to inactivate herbicides applied after carbon application. Field studies were conducted to determine...
Resource Type:: Masters Thesis

Intra- and interspecific interference between sweet corn (Zea mays L.) and a living mulch of white clover (Trifolium repens L.)

Creator:: Fischer, Albert J.
Abstract:: Living mulches are vegetative covers that can grow in association with row crops and may prevent soil erosion and suppress weeds. Crop reduction from association with the living mulch is a frequent problem with this cultural practice. The interference between a white clover (Trifolium repens L. "New Zealand") living mulch...
Resource Type:: Dissertation

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

Creator:: Costa, Jaime
Resource Type:: Masters Thesis
Full Text:: . Ronald J. Burr for serving on my graduate committee and reviewing this thesis. My thanks to the

Factors influencing wild oat control with N-benzoyl-N-(3,4-dichlorophenyl) alanine (SD 30053)

Creator:: Colbert, Donald Robert
Abstract:: Studies were conducted in 1969 and 1970 to evaluate the effectiveness of an experimental herbicide, SD 30053 (alanine, N-benzoyl-N-(3, 4-dichlorophenyl)-, ethyl ester), for wild oat (Avena fatua L.) control in winter cereals. The 1969 field studies showed that postemergence applications of SD 30053 were effective in controlling wild oats. Wild...
Resource Type:: Masters Thesis
Full Text:: the preparation of this manuscript. I am grateful to Dr. Ronald J. Burr, Department of Agronomic

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Creator:: Butler, J. Hugh B.
Abstract:: The herbicide rate required to reduce growth by 50% (GR₅₀) of 11 cultivars of red fesue (Festuca rubra L. and F. rubra ssp. commutata) and for four cultivars of bentgrass (Agrostis tenuis Sibth. and A. stolonifera L. var. palustris) to sethoxydim (2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) was determined in greenhouse and laboratory experiments....
Resource Type:: Dissertation
Full Text:: and mechanisms of selectivity AN ABSTRACT OF THE THESIS OF J. Hugh B. Butler for the degree of

Factors influencing barnyardgrass (Echinochloa crus-galli) control with diclofop

Creator:: West, Lynn Douglas
Abstract:: Diclofop (2- [4 -(2, 4-dichlorophenoxy)phenoxy] propanoic acid), formulated as the methyl ester, selectively kills barnyardgrass [Echinochloa crus -galli (L.) Beauv.] in several crops when applied postemergence. Studies were conducted to determine the effect of soil moisture, barnyardgrass age, and site of exposure on control of barnyardgrass with diclofop. Soil moisture...
Resource Type:: Dissertation
Full Text:: advisers, Dr. Arnold P. Appleby and Dr. J. H. Dawson for their advice and assistance during the course of

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:: preparation of the manuscript. I am grateful to Dr. Ronald J. Burr, Dr. William W. Chilcote and Dr. Lyall

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:: encouragement during my graduate program and during the preparation of this manuscript. To Dr. Ronald J. Burr

Reduction in atrazine toxicity to winter wheat by the growth retardant CCC

Creator:: Kirkland, Kenneth
Resource Type:: Dissertation
Full Text:: instruction in its use. Drs. Larry Boersma William W. Chilcote, J. Kamm, Warren E. Kronstad, and Ralph

ScholarsArchive@OSU

Interference of annual weeds in seedling alfalfa

Factors influencing the effectiveness of activated carbon used to protect newly-seeded grasses from herbicides

Intra- and interspecific interference between sweet corn (Zea mays L.) and a living mulch of white clover (Trifolium repens L.)

Comparisons of morphology and susceptibility to herbicides of two yellow nutsedge (Cyperus esculentus L.) varieties

Factors influencing wild oat control with N-benzoyl-N-(3,4-dichlorophenyl) alanine (SD 30053)

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Factors influencing barnyardgrass (Echinochloa crus-galli) control with diclofop

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

Interaction between glyphosate and certain s-triazine herbicides

Reduction in atrazine toxicity to winter wheat by the growth retardant CCC

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