Index Catalog // ScholarsArchive@OSU

A study in experimental poisoning of undesirable trees

Creator:: Trenholm, Ray
Resource Type:: Undergraduate Thesis

Interaction between dipyridylium herbicides and microbes in soil

Creator:: Tu, Chin-Ming, 1932-
Abstract:: The herbicides Diquat (1, 1'-ethylene-2, 2'-dipyridylium dibromide), Paraquat (1, 1'-dimethyl-4, 4'-dipyridylium dichloride), and Gramoxone (1, 1'-dimethyl-4, 4'-dipyridylium dimethyl sulphate), and the spreader X-77, a mixture of alkylaryl-polyethylene glycol, free fatty acids and isopropanol, were tested by several soil microbial methods in an attempt to find out if concentrations of these...
Resource Type:: Dissertation

The influence of light, temperature and humidity on the herbicidal activity of bromoxynil (3,5-dibromo-4-hydroxybenzo-nitrile) on Amsinckia intermedia

Creator:: Zimmerman, Martin (Martin Joseph)
Abstract:: The use of bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) to control broadleaf weeds in cereal crops has become widespread. This herbicide has not always performed satisfactorily for reasons which were not clearly evident. The effects of temperature, light and humidity on the herbicidal activity of bromoxynil on coast fiddleneck, Amsinckia intermedia, were studied. Fiddleneck...
Resource Type:: Masters Thesis

Herbicide effects on Bdellovibrio bacteriovorus

Creator:: Wehr, Nancy Briggs
Abstract:: Bdellovibrio bacteriovorus is a small parasitic bacterium present in soil, mud, and aquatic habitats. Due to its lysis of Gramnegative bacteria, an important role in soil ecology has been suggested for this organism. A study of effects of herbicides upon Bdellovibrio might consequently be of considerable value. In this study...
Resource Type:: Masters Thesis

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

The in vivo metabolism of ethyl-N, N,-di-n-propylthiolcarbamate in rats

Creator:: Ong, Visitacion Yu
Abstract:: The metabolism of ¹⁴C-labeled ethyl -N, N-di-n- propylthiolcarbamate (EPTC- ¹⁴C) was studied in adult female rats. Single oral doses of EPTC-¹⁴C ranging from 0. 6 to 100. 6 mg were given and the elimination pattern of ¹⁴C was determined. Results of 18 experiments showed that increasing the doses of EPTC-...
Resource Type:: Masters Thesis

The influence of various climate and edaphic factors on the toxicity of 2-tert. butylamino-4-ethylamino-6-methylthio-s-triazine (Igran) to winter wheat (Triticum aestivum Vill., Host)

Creator:: Figuerola, Luis Fernan
Abstract:: Several studies were conducted to determine the influence of various environmental factors on the toxicity of 2-tert.butylamino- 4-ethylamino-6-methylthio-s-triazirxe (Igran) to winter wheat. The effect of temperature on Igran toxicity was studied by growing wheat plants in pots submerged in water baths to control soil temperature and in controlled-environment chambers. Igran...
Resource Type:: Dissertation

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

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

The influence of selected environmental factors on diuron toxicity to winter wheat

Creator:: Homesley, Wylie Buress
Abstract:: Previous work has shown that diuron (3-(3, 4- dichlorophenyl)-1, 1-dimethylurea) is less toxic to fall-planted wheat than to wheat planted in the spring. Diuron has been a significant factor in increasing yields of winter wheat grown in Oregon's Willamette Valley. The influence of several selected environmental factors on diuron toxicity...
Resource Type:: Dissertation

ScholarsArchive@OSU

A study in experimental poisoning of undesirable trees

Interaction between dipyridylium herbicides and microbes in soil

The influence of light, temperature and humidity on the herbicidal activity of bromoxynil (3,5-dibromo-4-hydroxybenzo-nitrile) on Amsinckia intermedia

Herbicide effects on Bdellovibrio bacteriovorus

The persistence of five herbicides in Hawaiian soil

The in vivo metabolism of ethyl-N, N,-di-n-propylthiolcarbamate in rats

The influence of various climate and edaphic factors on the toxicity of 2-tert. butylamino-4-ethylamino-6-methylthio-s-triazine (Igran) to winter wheat (Triticum aestivum Vill., Host)

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.)

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

The influence of selected environmental factors on diuron toxicity to winter wheat

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