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Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

Creator:: McAuliffe, David
Abstract:: Applications of ethofumesate in Oregon have been observed from previous research and from commercial use to be less effective when applied to dry soils, even if subsequent precipitation occurred within a few days. Two field studies were established in the summer of 1979 using sweet corn (Zea mays L. 'Jubilee')...
Resource Type:: Masters Thesis
Full Text:: (50 g, air-dried equivalent) at 2 and 20% soil moisture were treated with 484 pg of ethofumesate. The

Herbicidal effectiveness of trifluralin as influenced by methods of incorporation into the soil and depth of weed seed germination

Creator:: Gargano, Don Richard
Abstract:: This study was conducted to compare the effectiveness of four methods of incorporating the herbicide trifluralin into the soil, and to determine the interaction between depth of incorporation of trifluralin and depth of weed seed germination. Field experiments on green and dry peas were established in Oregon and Idaho. Trifluralin,...
Resource Type:: Masters Thesis
Full Text:: Redacted for privacy Dean of Graduate School Date thesis is presented rv. l,t`7(a 1f Typed by Donna L

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

Creator:: Olson, Phillip David Leroy
Resource Type:: Masters Thesis
Full Text:: Donna L. Olson for Phillip David Leroy Olson ACKNOWLEDGEMENTS I would like to extend my sincere

An economic analysis of alternative herbicide practices

Creator:: Coulston, Lane Edward
Abstract:: There is a critical lack of economic information in the area of chemical weed control. This paper is intended to stimulate study in this area. The objective is to develop a method of economic analysis of alternative herbicide practices. The data used were taken from a Druchamp winter wheat trial...
Resource Type:: Masters Thesis
Full Text:: is presented nfl) C1 Typed by Donna L. Olson for Lane E.Coulston Redacted for Privacy Redacted for

Factors influencing the herbicidal activity and persistence of isomers of 1, 1-dimethyl-diisopropyl-indanyl ethyl ketone in soil

Creator:: Donaldson, Dean Robert
Abstract:: The purpose of this study was to evaluate the activity of Sindone (isomers of 1, 1-dimethyl-diisopropyl-indanyl ethyl ketone) under field conditions and to gain information regarding the rate of detoxification of Sindone in soil. A series of trials were established in sugar beet fields in California, Oregon, and Washington. Sindone...
Resource Type:: Masters Thesis
Full Text:: Dean of Graduate School Date thesis is presented C Typed by Donna Olson for Dean Robert Donaldson

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:: Redacted for Privacy Dean of Graduate School Date thesis is presented May IQíc) Typed by Donna Olson

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:: presented Typed by Donna Olson ACKNOWLEDGMENT My sincere appreciation to Dr. William R. Furtick for

Influence of Norbak, Dacagin, and Vistik on spray drift, volatility, adherence, and efficacy of several herbicides

Creator:: Ekins, Walter Leo
Abstract:: Norbak, Dacagin, and Vistik, when mixed with a spray solution, each have the unique property of increasing the viscosity of that solution. This property has been used commercially for the reduction of spray drift. Studies were made of the drift control adjuvants to determine the following: (1) the effect of...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Dean of Graduate School Date thesis is presented C, Typed by Donna Olson for

A kinetic analysis of herbicide degradation in soil

Creator:: Zimdahl, Robert L.
Resource Type:: Dissertation
Full Text:: thesis is presented Typed by Donna Olson for Robert Lawrence Zimdahl ACKNOWLEDGEMENTS The author is

Stimulation of plant growth by sub-lethal concentrations of herbicides

Creator:: Wiedman, Steven John
Abstract:: Studies were conducted to determine the extent and nature of sub-lethal effects of herbicides on plant growth. At least one herbicide from each major chemical class of herbicides was evaluated under greenhouse conditions. Oat plants were grown in sand culture to eliminate soil interferences. Herbicides were applied pre-emergence in nutrient...
Resource Type:: Dissertation
Full Text:: Donna L. Olson for Steven John Wiedman ACKNOWLEDGEMENT To my wife, Kay, without whose help this task

ScholarsArchive@OSU

Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

Herbicidal effectiveness of trifluralin as influenced by methods of incorporation into the soil and depth of weed seed germination

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

An economic analysis of alternative herbicide practices

Factors influencing the herbicidal activity and persistence of isomers of 1, 1-dimethyl-diisopropyl-indanyl ethyl ketone in soil

The influence of magnesium on the toxicity of atrazine

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

Influence of Norbak, Dacagin, and Vistik on spray drift, volatility, adherence, and efficacy of several herbicides

A kinetic analysis of herbicide degradation in soil

Stimulation of plant growth by sub-lethal concentrations of herbicides

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