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The influence of soil fumigants and soil fungicides on some important soil-borne plant pathogens

Creator:: Liu, Marlene Mei-yu
Abstract:: Twelve chemicals (Busan 72, Chloropicrin, Dacthal, Dexon, Duter, EP 161, Lanstan, Methyl bromide, Phaltan, Vapam, Vidden D, Vorlex) were tested to determine their effect on populations of certain important soil-borne microorganisms including the onion pink root fungus Pyrenochaeta terrestris. The soil used was from a field in Malheur County, Oregon...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for Privacy (Signature)' E. K. Vaughan Twelve chemicals (Busan 72, Chloropicrin

Factors influencing development and control of Phytophthora fragariae Hickman, the cause of red stele disease of strawberries

Creator:: Houck, Laurie G., 1928-
Resource Type:: Dissertation
Full Text:: : Dr. E. K. Vaughan for his counsel, advice and encouragement during the course of these studies and

A compound from onion roots inhibitory to Pyrenochaeta terrestris

Creator:: Pfleger, Francis Louis
Abstract:: In vitro tests showed mycelial growth of Pyrenochaeta terrestris was inhibited by root and bulb extracts from the pink root resistant onion cultivar Nebuka, but not by extracts from the susceptible Southport White Globe. The active principle was shown to be fungistatic rather than fungicidal. It is present in both...
Resource Type:: Dissertation
Full Text:: appreciation to Dr. E. J. Trione and Dr. E. K. Vaughan for their guidance, advice and encouragement in the

Resistance mechanisms against onion pink root (Pyrenochaeta terrestris), bioassay of inoculum potential in soil and chemical control

Creator:: Siemer, Sidney R.
Resource Type:: Dissertation
Full Text:: : Dr. E I4. Vaughan Eight onion varieties showed four host -pathogen relationships when

The etiology of bacterial soft rot of onions and identification of the causal organisms

Creator:: Irwin, Roger Deane
Abstract:: Observations of bacterial soft rot of onions in the Lake Labish area in the Willamette Valley of western Oregon showed that two distinct symptom types occur during the growing season. The most prevalent symptom type appears in infected plants as a wilting and chlorosis of two or more lower leaves...
Resource Type:: Dissertation
Full Text:: THE CAUSAL ORGANISMS Major Professor: Redacted for privacy E. K. Vaughn Observations of bacterial

Pink root of onion caused by Pyrenochaeta terrestris

Creator:: Hess, Wilford M., 1934-
Resource Type:: Dissertation
Full Text:: author wishes to express his sincere appreciation to Dr. E. K. Vaughan for the guidance and assistance

Low cost, short wavelenght fiber Bragg grating strain sensor systems

Creator:: Vaughan, Lira
Abstract:: Fiber Bragg grating sensors have been constantly researched for the last ten years and have finally begun to find use in the commercial market. However, one of the major factors limiting their widespread use is their system cost. Their lightweight, flexibility, electromagnetic immunity, and small size make fiber Bragg grating...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Lira Vaughan for the degree of

Occurrence, behavior and control of Verticillium albo-atrum Reinke and Berth in small fruits

Creator:: Pratt, Michael John
Resource Type:: Dissertation
Full Text:: exrress his gratitude to Dr. dward K. Vaughan for his advice and encouragement throughout the course of

Role of associated fungi in the prevention of gray mold (Botrytis cinerea Pers.) of strawberries

Creator:: Bhatt, Dibya Deo
Resource Type:: Dissertation
Full Text:: this task would not have been completed: Dr. E. K. Vaughan for guiding this re- search and providing

Interrelationships between fungi associated with the damping-off disease of table beets in Oregon

Creator:: Lin, Shu-yen
Abstract:: Damping-off of table beets is of widespread occurrence in the Willamette Valley of Oregon. Pythium ultimum Trow., Pythium debaryanum Hess., and Rhizoctonia solani Kuhn. were found to be the important pathogenic fungi causing the disease. Trichoderma viride, Penicillium spp. Streptomyces spp. and certain isolates of bacteria, all saprophytic organisms associated...
Resource Type:: Masters Thesis
Full Text:: deeply indebted to Dr. Edward K. Vaughan for his invaluable guidance during the course of this

ScholarsArchive@OSU

The influence of soil fumigants and soil fungicides on some important soil-borne plant pathogens

Factors influencing development and control of Phytophthora fragariae Hickman, the cause of red stele disease of strawberries

A compound from onion roots inhibitory to Pyrenochaeta terrestris

Resistance mechanisms against onion pink root (Pyrenochaeta terrestris), bioassay of inoculum potential in soil and chemical control

The etiology of bacterial soft rot of onions and identification of the causal organisms

Pink root of onion caused by Pyrenochaeta terrestris

Low cost, short wavelenght fiber Bragg grating strain sensor systems

Occurrence, behavior and control of Verticillium albo-atrum Reinke and Berth in small fruits

Role of associated fungi in the prevention of gray mold (Botrytis cinerea Pers.) of strawberries

Interrelationships between fungi associated with the damping-off disease of table beets in Oregon

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