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Black root of radish caused by Aphanomyces raphant Kendrick in Oregon

Creator:: Hosford, Robert Morgan
Resource Type:: Masters Thesis
Full Text:: . The disease relationships, the causal fungus and the effect of soil additives on severity of disease

Diseases of western sword-fern Polystichum munitum (Kaulf.) Presl.

Creator:: Sandeno, James Louis
Resource Type:: Masters Thesis
Full Text:: about 30 inches long and free of disease, disfiguration, and surface dirt. The price varies with the

Response of Hannchen barley to the yellow dwarf virus disease as modified by nitrogen and phosphorus

Creator:: Lamptey, Paul Nii Lante
Resource Type:: Masters Thesis
Full Text:: Disease as Modified by Nitrogen and Phosphorus RES1DNSE OF IIANNCHEN BARLEY TO TilE YELlOW DWARF VIRUS

The effects of balsam woolly aphid infestations on wood anatomy of true firs

Creator:: Doerksen, Allan Harold
Abstract:: Three species of true firs in the Pacific Northwest--Abies gran-dis, grand fir; A. amabilis, Pacific silver fir; and A. lasiocarpa, subalpine fir--are severely damaged or killed by an imported insect pest, the balsam woolly aphid (Chermes (Adelges) piceae Ratz.), Infestations of this insect cause abnormalities in the wood and, in...
Resource Type:: Masters Thesis
Full Text:: been severely damaged and often killed by infestations of an irnported insect pest, the balsarn woolly

Resistance in hops to systemic rootstock and crown infection by downy mildew

Creator:: Skoe, Donald Edward
Resource Type:: Masters Thesis
Full Text:: and damp weather, such 9e that iroquently encountered in western Oregon in the spring, the disease

Treatment of June yellows and witches'-broom in strawberry with oxytetracycline

Creator:: Huhtanen, Dianne Carol
Abstract:: Strawberry plants infected with June yellows and witches'-broom disease were grown in a mist chamber and treated with varying concentrations of oxytetracycline. Treatment with 50 ppm oxytetracycline produced phytotoxicity effects in strawberries infected with June yellows. However, treatment with 10 ppm oxytetracycline resulted in a significant (one percent level) increase...
Resource Type:: Masters Thesis
Full Text:: disease were grown in a mist chamber and treated with varying concen- trations of oxytetracycline

A study of pansy and other viola leaf spot diseases

Creator:: Calavan, Edmond Clair, 1913-
Resource Type:: Masters Thesis
Full Text:: to check or halt the spread of the disease by carefully re- moving and destroying all spotted

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:: , sucrose and ca- sein, on the other hand, increased incidence of the disease. Simultaneous infestation

Growth and variability of Fomes pini in culture

Creator:: Park, Jai Young
Resource Type:: Masters Thesis
Full Text:: includes a brief historical dis- cussion of the disease and a 8tatetent of its economic importance. It is

Types of brown-rot twig-blight on peach in Oregon caused by species of Sclerotinia

Creator:: Wang, Chʻuang
Resource Type:: Masters Thesis
Full Text:: important disease of stone fruits in Europe, America, and various other parts of the world. In Europe and

ScholarsArchive@OSU

Black root of radish caused by Aphanomyces raphant Kendrick in Oregon

Diseases of western sword-fern Polystichum munitum (Kaulf.) Presl.

Response of Hannchen barley to the yellow dwarf virus disease as modified by nitrogen and phosphorus

The effects of balsam woolly aphid infestations on wood anatomy of true firs

Resistance in hops to systemic rootstock and crown infection by downy mildew

Treatment of June yellows and witches'-broom in strawberry with oxytetracycline

A study of pansy and other viola leaf spot diseases

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

Growth and variability of Fomes pini in culture

Types of brown-rot twig-blight on peach in Oregon caused by species of Sclerotinia

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