Index Catalog // ScholarsArchive@OSU

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:: presented Typed by Mary Jo Stratton for Larry C. Burrill ACKNOWLEDGEMENTS I wish to express my sincere

Activity and persistence of five postemergence grass herbicides in soil

Creator:: Martin, David C. (David Christopher), 1949-
Resource Type:: Masters Thesis
Full Text:: the summer, 1984. a) 1.12 kg ai/ha, b) 0.56 kg ai/ha, c) 0.28 kg ai/ha, d) 0.14 kg ai/ha. The

Effect of glyphosate when applied to grass and legume seeds or preemergence to bentgrass (Agrostis tenuis Sibth.)

Creator:: Salazar, Luis Carlos
Abstract:: Paraquat (1,11-dimethy1-4,4'-bipyridinium ion) and glyphosate [N (phosphonomethyl)glycine] are herbicides utilized for chemical seedbed preparation in the establishment of grass and legume seed crops. When these herbicides are applied after seeding the crop, seeds which are not protected by a layer of soil could be exposed to the herbicide. Effects of...
Resource Type:: Masters Thesis
Full Text:: activity of glyphosate. Objective (a) is addressed in Section I. Objectives (b) and (c) are addressed in

Germination and growth characteristics of five accessions of jointed goatgrass (Aegilops cylindrica)

Creator:: Gleichsner, Jean A.
Abstract:: Laboratory and field studies were conducted at Pendleton, Oregon, during 1983 and 1984 to evaluate germination and growth characteristics of five jointed goatgrass (Aegilops cylindrica Host) accessions collected from sites in Echo, Ione, Pendleton, Condon, and Elgin, Oregon. Spikelets were germinated for 27 days at room (23 +̲ 2 C)...
Resource Type:: Masters Thesis
Full Text:: 5.4 d 4.3 de 10.8 b 23 0.3 h 1.0 f-h 0.2 h 5.6 d 8.0 c 4.8 d 19.4 a 29 0.0 i 0.1 h 0.1 h 0.7 g-h 3.2 d

Non-herbicidal effects of dinoseb on winter wheat yields

Creator:: Valverde, Bernal E.
Abstract:: A series of experiments were conducted from 1983 to 1985 to determine the effects of dinoseb [2-(1-methylpropyl)-4,6-dinitrophenol] on winter wheat (Triticum aestivum L. em Thell) yields. Field trials on dinoseb timing and dinoseb plus supplemental pesticides were established in an effort to elucidate the possible factors involved in the yield...
Resource Type:: Masters Thesis
Full Text:: ) preplant fumigation with 50 g/m2 methyl bromide, b) 2.25 kg/ha phorate preplant incorporated, c) 1.12 kg

Studies of napropamide decomposition on the soil surface

Creator:: Apley, Kathryn Lynne
Abstract:: Napropamide [2-(alpha-naphthoxyl)-N,N-diethylpropionamide], a preemergence herbicide, is widely used in the United States on a variety of tree fruits, nut crops, vegetables, and mint for annual grass and broadleaf weed control. When napropamide has been left on the soil surface without incorporation through irrigation or mechanical means, inconsistent results have been...
Resource Type:: Masters Thesis
Full Text:: 80 70 60 20 10 0 .1. ../.. A C A - Blank B Teflon film C - Polycarbonate plastic 290 300

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:: ) Marginal Cost of Pesticide Application Plus External Costs I I4_4 C B Pesticide (V) Marginal Value of

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:: trifluralin solution. The treatment sites were 6 (a) shoot, (b) root, (c) shoot and root, and (d) control

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:: barnyard - grass in this experiment, (b) Sindone reduced beet stands, and (c) Sindone probably reduced

The influence of herbicide placement in soil on toxicity to emerging seedlings

Creator:: Nishimoto, R. K. (Roy Katsuto), 1944-
Abstract:: Previous research has indicated several soil-applied herbicides are more effective by exposure to emerging shoots than from root uptake. Studies were conducted in the greenhouse and growth chamber to investigate effects of herbicide placement in soil on toxicity to emerging seedlings. In these studies, an inch of treated soil was...
Resource Type:: Masters Thesis
Full Text:: 112.8 a 67. 6 b 54. 5 b atrazine 2.0 oats 101.3 a 85.3 a 48.7 b 3.0 oats 80.0 b 48.3 c 38.5 c 4.0

ScholarsArchive@OSU

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

Activity and persistence of five postemergence grass herbicides in soil

Effect of glyphosate when applied to grass and legume seeds or preemergence to bentgrass (Agrostis tenuis Sibth.)

Germination and growth characteristics of five accessions of jointed goatgrass (Aegilops cylindrica)

Non-herbicidal effects of dinoseb on winter wheat yields

Studies of napropamide decomposition on the soil surface

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

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

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

The influence of herbicide placement in soil on toxicity to emerging seedlings

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