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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:: Hawaii Cooperative Extension Ser- vice for providing the opportunity to conduct the research. TABLE

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

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

Creator:: Harris, James O.
Abstract:: The use of terbacil for weed control was adapted by a high percentage of Oregon peppermint growers soon after its introduction in 1967. To help clarify some of the implications of terbacil usage, three studies were undertaken to collect information concerning (a) the movement and build-up of terbacil in various...
Resource Type:: Masters Thesis
Full Text:: research. A special thanks goes to the County Extension agents who helped provide sampling sites and

Foliar vs. root uptake of the herbicide Hoe 23408 in Italian ryegrass and wild oats

Creator:: West, Geralyn Marie
Abstract:: HOE 23408 [methyl 2-[ 4-( 2, 4- dichlorophenoxy )phenoxy]propanoate] is a herbicide used to selectively-control Italian ryegrass (Lolium muitiflorum Lam.) and wild oats (Avena fatua L.) in wheat. The objective of this research was to compare the relative importance of foliar and root uptake of the herbicide in these two...
Resource Type:: Masters Thesis
Full Text:: and no injury symp- toms are present (American Hbechst Technical Information Bulletin). Following

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:: for 1976 and 1977. Data for 1976 from the Roza Unit, irrigated Agri- culture Research and Extension

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:: properties of atrazine are sum- marized in a technical bulletin from Geigy Chemical Corporation (20). The

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

Creator:: Olson, Phillip David Leroy
Resource Type:: Masters Thesis
Full Text:: 1technical bulletin printed by Stauffer Chemical Company. Because of its high vapor pressure, cycloate

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:: Bibliography 22 Elanco Product Information Bulletin 26 Preplant application of trifluralin for control of

The control of colonial bentgrass (Agrostis tenuis Sibth.) with N-(phosphonomethyl) glycine

Creator:: Brewster, Bill D.
Resource Type:: Masters Thesis

The reproduction and mode of spread of sago pondweed (Potamogeton pectinatus L.) in irrigation system

Creator:: Ogg, Alex G.
Abstract:: Nine experiments were conducted during 1964 and 1965 to study the methods of reproduction and mode of spread of sago pondweed (Potamogeton pectinatus) in irrigation systems. Frequent treatments of sago pondweed foliage with aromatic solvent greatly reduced the number of tubers in the substratum of an irrigation canal. However, complete...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The persistence of five herbicides in Hawaiian soil

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

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

Foliar vs. root uptake of the herbicide Hoe 23408 in Italian ryegrass and wild oats

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

The influence of magnesium on the toxicity of atrazine

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

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

The control of colonial bentgrass (Agrostis tenuis Sibth.) with N-(phosphonomethyl) glycine

The reproduction and mode of spread of sago pondweed (Potamogeton pectinatus L.) in irrigation system

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