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Creator:: Zehsazian, Hassan
Abstract:: Verticillium wilt of hops in Oregon, caused by Verticillium dahliae Kleb., was first reported in 1956. Later, V. albo-atrum Reinke & Berth. was also isolated from infected hop plants, and thus both species of the fungus were shown to be the causal agents of the disease in Oregon. The purpose...
Resource Type:: Dissertation
Full Text:: of the disease in Oregon. The purpose of this research was to study temperature rela- tions and

Creator:: Maas, J. L.
Abstract:: Abundant conidial and sclerotial production occurs on iris plants infected with Botrytis convoluta Whetzel and Drayton during the cool moist months of the year. Experiments were designed to study the survival and inoculum potential of conidia and sclerotia. Basic nutritional requirements of the fungus in culture were also studied. Results...
Resource Type:: Dissertation
Full Text:: dissemination of the disease since growers believe they are shipping sound rhizomes. Chemical control would be

Creator:: Martinson, Charlie Anton
Resource Type:: Dissertation
Full Text:: disease severity to extent of stem invasion by V. dahliae in peppermint plants grown in infested soil

Creator:: Dimalla, Gerard George
Resource Type:: Masters Thesis
Full Text:: ten years increasing awareness of the pres- ence of latent viruses in stone fruits and strawberries

Creator:: Bhullor, Sukhbir
Abstract:: The infectivity of plant viruses was suppressed by inhibitory substances (IS) in the sap of Chenopodium. Various methods were attempted to find an efficient method which would allow direct transmission of viruses from Chenopodium to other plants. Viruses used in these experiments were alfalfa mosaic virus (AMV), tobacco mosaic virus...
Resource Type:: Dissertation
Full Text:: of PYBV frorn Strawberry ct of sucrose extraction on AMV in Chenopodium AND C ONC LUSIONS 46 46 48

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:: treatments for control of the red stele disease of strawberries. Plant Disease Reporter 41:415-418. 1957, 30

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