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Behavior of metribuzin and ethylmetribuzin in soil

Creator:: Peek, Daniel C.
Abstract:: The behavior of metribuzin [4-amino-6-(1,1- dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] and ethyl-metribuzin (4-amino-6-(1,1-dimethylethyl)-3- (ethylthio)-1,2,4-triazin-5(4H)-one] in soil was studied to determine if differences in herbicide behavior in soil could explain (a) the inconsistent herbicidal activity of these chemicals and (b) the greater activity of metribuzin, as compared to ethyl-metribuzin. Metribuzin had higher activity than ethyl-metribuzin...
Resource Type:: Dissertation
Full Text:: of approximately 200 uEm-2s-1. Daylength was 16 h and temperature held constant at 20 C. Water was

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

Creator:: Paller, Enrique C.
Abstract:: Greenhouse and growth chamber experiments were conducted with the following objectives: (a) to study the effects of N-1-naphthylphthalamic acid (naptalam) on shoot and tuber production, rhizome transformation, and growth of yellow nutsedge (Cyperus esculentus L.) plants; (b) to study the effects of N-phosphonomethyl glycine (glyphosate) on nutsedge plants at different...
Resource Type:: Dissertation
Full Text:: yellow nutsedge and its control with n-phosphonomethyl glycine AN ABSTRACT OF THE THESIS OF ENRIQUE C

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

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:: approved: Redacted for Privacy Jean H. Dawson( 14 Arnold Pf Xpplebyf Volunteer winter wheat (Triticum

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:: 19.8 a 6.8 c 8.7 d -3.4 b -9.6 b 4.3 c -20.0 c -8.8 b 9.4 b 10.2 c -1.7 a -8.9 h 5.3 c -19.1 c -9.9 b

Tobacco rattle virus : weed hosts, diagnosis, characterization, purification, and interaction with potato virus X

Creator:: Locatelli, Eduardo Atilio
Abstract:: A series of studies was conducted to determine the presence of tobacco rattle virus (TRV), potato virus X (PVX), and other viruses in wild plants and to evaluate the efficacy of the detection methods; to characterize and purify an isolate of TRV; and to study the interaction between TRV and...
Resource Type:: Dissertation
Full Text:: INTERACTION WITH POTATO VIRUS X Redacted for Privacy -Redacted for Privacy Arnow F. Applo.el?y r Inomas C

Sugarbeet response to mechanical and chemical manipulation of the shoot apical meristem

Creator:: Eberlein, Charlotte Vawter
Resource Type:: Masters Thesis
Full Text:: . Sugar Beet Technol. 13:21-26. 4, Carte:, J. N., C. H. Pair, and D. T. Westerman. 1975. Effect of

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:: August 14, were dug out. The species were then separated and dried at 65 C for 64 h. The dry weights of

Asulam for tansy ragwort control in alfalfa : field efficacy and selectivity factors

Creator:: Harper, Delbert Ray
Abstract:: Tansy ragwort (Senecio jacobaea L. ) is a poisonous weed which infests alfalfa fields in western Oregon. Studies were conducted to evaluate the effectiveness of asulam (methyl sulfanilylcarbamate)for control of tansy ragwort in alfalfa and to elucidate factors responsible for its selectivity. In seven replicated field trials in 1973 and...
Resource Type:: Dissertation
Full Text:: extended to Dr. Thomas C. Moore, Dr. W. W. Chilcote and Dr. Michael C. Mix for serving on my committee

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

Creator:: Colbert, Floyd Oral
Resource Type:: Dissertation
Full Text:: Atrazine Terbutryn GS -14254 2 6 IN- 4 Cl NHC 2 H 5 NHi C 3 H7 33 1.68 SCH3 NHC2H5 NHtC 4H9 58 4.32

ScholarsArchive@OSU

Behavior of metribuzin and ethylmetribuzin in soil

The effects of N-1-Naphthylphthalamic acid on growth of yellow nutsedge and its control with N-Phosphonomethyl glycine

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

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

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

Tobacco rattle virus : weed hosts, diagnosis, characterization, purification, and interaction with potato virus X

Sugarbeet response to mechanical and chemical manipulation of the shoot apical meristem

Interference of annual weeds in seedling alfalfa

Asulam for tansy ragwort control in alfalfa : field efficacy and selectivity factors

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

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