Index Catalog // ScholarsArchive@OSU

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:: -planted, late-sprayed treatments. 100 19 o Fall, early (a) + Fall, late (b) O Spring, early (c) A

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:: . Soc. Am. J. 49:583-586. 27 16. Peter, C. J. and J. B. Weber. 1985. Adsorption, mobility, and

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

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:: inoculated with a tobacco rattle virus isolate from Oregon potato fields. (A, B, C) Nicotiana tabacum cv

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

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

Creator:: Fechtig, Allen David
Abstract:: After nearly 20 years of commercial use in orchards without apparent tree injury in Oregon and Washington, 2,4-D [(2,4-dichlorophenoxy) acetic acid] was reported in 1970 to cause injury to apple and pear trees in Washington. In the early 1970's, there was widespread concern among growers, researchers, and processors in the...
Resource Type:: Dissertation
Full Text:: . David Chilcote, C. E. Horner, Thomas C. Moore, and Darwin Reese has been a valuable contribution in

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:: discussions and assistance. To Drs. David 0. Chilcote, Thomas C. Moore, and V. Van Volk for serving as

Control of purple nutsedge (Cyperus rotundus L.) with glyphosate

Creator:: Chase, Richard Lyle
Resource Type:: Dissertation
Full Text:: control of Cyperus rotundus L. A. Summary 1 B. Introduction 2 C. Materials and methods 3 1. Rainy

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

Creator:: Diop, Amadou Makhtar
Abstract:: Field, screenhouse, and laboratory experiments were conducted to study weed interference in rice grown on hydromorphic soils at the International Institute of Tropical Agriculture (IITA) at Ibadan, Nigeria. Rice and weeds emerged at the same time, 1 week after planting. Weed dry weight was significantly reduced when the crop was...
Resource Type:: Dissertation
Full Text:: Burrill, G. Crabtree, and D. C. England for their time and support they have given me. I also thank R. D

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

Creator:: Thill, Donald Cecil, 1950-
Abstract:: The influence of certain environmental and edaphic factors on the germination and emergence of downy brome (Bromus tectorum L.) was investigated in the laboratory. A preliminary study was conducted to determine the osmotic stability of mannitol and polyethylene glycol 20,000 (PEG) solutions, which are commonly used to simulate water stress...
Resource Type:: Dissertation
Full Text:: a 6.3 6.9 98 a 99 a 9.3 9.3 95 a 92 a 16.9 17.3 0 c 0 c Soil 4.1 95 a 7.4 86 a 11.4 42 b 16.7

ScholarsArchive@OSU

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

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

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

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

The effect of 2,4-D on the respiration rate and ethylene production of Bartlett pears and Red Delicious apples

Stimulation of plant growth by sub-lethal concentrations of herbicides

Control of purple nutsedge (Cyperus rotundus L.) with glyphosate

An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

The influence of certain environmental and edaphic factors on germination and emergence of Bromus tectorum L.

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