Index Catalog // ScholarsArchive@OSU

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:: , characterization, purification, and interaction with potato virus X AN ABSTRACT OF THE THESIS OF EDUARDO ATILIO

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:: . Studies were conducted to determine whether the adjuvants would substitute for the wetting agent X -77

The influence of various surfactant-herbicide ratios in three volumes of water on the toxicity of dalapon, paraquat, and terbacil to winter oats (Avena sativa L.)

Creator:: Migchelbrink, Kenneth John
Abstract:: Several studies were conducted to determine if a more consistent predictor of phytotoxicity to winter oats could be obtained with a surfactant-herbicide ratio or a per-unit-volume concentration of surfactant, independent of volume. The herbicides tested were 2,2-dichloropropionic acid (dalapon), 1,1'-dimethyl-4, 4'-bipyridinium (paraquat), and 3-tert-butyl-5-chloro-6-methyluracil (terbacil) with the nonionic surfactant X-77...
Resource Type:: Masters Thesis
Full Text:: ' -bipyridinium (paraquat), and 3 -tert-buty1-5-chloro-6-methyluracil (terbacil) with the nonionic surfactant X

Indole-3-acetic acid in (2-chloroethyl)-trimethylammonium chloride-treated club wheat (Triticum aestivum compactum)

Creator:: Gould, Walter Leonard
Abstract:: Studies were conducted to verify the existence of IAA in wheat seedlings and to determine the effect of (2-chloroethyl)-trimethyl-ammonium chloride (CCC) on the IAA content of club wheat, Triticum aestivum compactum, variety Omar. The shoots of CCC-treated and untreated wheat plants were extracted with ethanol, the plant extract purified, separated...
Resource Type:: Dissertation
Full Text:: seedlings was estimated at L.5-3. O X I0-3 micrograms per gram fresh weight. A comparison of the growth

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:: 3951 1 LSD at 95% level for asulam rate x time equals 128 kg/ha; F value for application date and

Factors influencing the effectiveness of activated carbon used to protect newly-seeded grasses from herbicides

Creator:: Burr, Ronald J.
Abstract:: Previous research has shown that activated carbon is effective in inactivating certain herbicides applied as a preemergence treatment. Studies were conducted in the greenhouse to determine the influence of various factors on the ability of activated carbon to inactivate herbicides applied after carbon application. Field studies were conducted to determine...
Resource Type:: Masters Thesis
Full Text:: obtained. X-77, Surfactant-WK, and Rhodes' Spreader-Activator were used at rates of 0.3, 0.9, and 2. 7% (v

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:: two irrigation types: subsurface and overhead. No placement x irrigation interaction was noted

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:: - nation, was inhibited by increased levels of soil compac- tion. No significant soil compaction x

The soil persistence and crop selectivity of 3, 6-dichloropicolinic acid

Creator:: Olson, David Lloyd
Abstract:: Field studies were conducted in 1973 and 1974 to determine the soil persistence of the herbicide M-3785 (containing 0.5 lb a.e. Dowco 290 + 2.0 lb a.e. 214D/gallon). under cropping situations. Spring barley (Hordeum distichon L. 'Hannchen') was grown at Corvallis, Oregon and winter wheat (Triticum aestivum L. 'Nugaines.') was...
Resource Type:: Masters Thesis
Full Text:: vulgaris L. 'SL9100363x2161)x SP6322-0') and watermelons (Citrullus lanatus [Thumb.] Mansf. 'Striped

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

Creator:: Olson, Phillip David Leroy
Resource Type:: Masters Thesis
Full Text:: boiling point at 145-146 C at 10 mm of mercury. Its vapor pressure is 2 x 10-3 mm of Hg at 25 C. Other

ScholarsArchive@OSU

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

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

The influence of various surfactant-herbicide ratios in three volumes of water on the toxicity of dalapon, paraquat, and terbacil to winter oats (Avena sativa L.)

Indole-3-acetic acid in (2-chloroethyl)-trimethylammonium chloride-treated club wheat (Triticum aestivum compactum)

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

Factors influencing the effectiveness of activated carbon used to protect newly-seeded grasses from herbicides

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

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

The soil persistence and crop selectivity of 3, 6-dichloropicolinic acid

Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

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