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The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

Creator:: Bedwell, Jesse Leonard
Resource Type:: Masters Thesis
Full Text:: chemical dusts for the control of onion smut THESIS THE COMPARATIVE VALUE OF FORMALDEHYDE AND OF

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:: 22. Treatments used to evaluate carry -over effect of Telone and Vorlex for control of onion pink

Brown rot of fruits and fruit trees in Oregon

Creator:: Posey, Gilbert Bradley
Resource Type:: Masters Thesis
Full Text:: Brown rot of fruits and fruit trees in Oregon THESIS

Environmental Factors Affecting Phytophthora Root Rot of Rhododendron

Creator:: Mestas, Angie
Abstract:: Phytophthora root rot decreases availability and quality of rhododendrons produced in the USA. Symptoms of Phytophthora root rot include root necrosis, leaf chlorosis, stunting, and permanent wilt. The purpose of this thesis was to better understand the impact of root damage, soil moisture, nitrogen fertilizer application, and pathogen species on...
Resource Type:: Masters Thesis
Full Text:: . Title: Environmental Factors Affecting Phytophthora Root Rot of Rhododendron. Abstract

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: were incorporated into a model for spread of laminated root rot. The goal of the spread model is to

Schlerotinia rot of leguminous plants

Creator:: Elmer, Otto Herman
Resource Type:: Masters Thesis
Full Text:: Schlerotinia rot of leguminous plants ( THSI s On

Genetics of sexuality and population genetics of Phellinus weirii

Creator:: Angwin, Peter A.
Abstract:: Phellinus weirii (Murr.) Gilbertson, cause of laminated root and butt rot, is a heterothallic basidiomycete lacking clamp connections. Two biological species groups of the fungus have been hypothesized, the Douglas-fir and cedar-types, on the basis of physiological, morphological and epidemiological differences. Single-spore and vegetative isolates differ in cultural morphology, nuclear...
Resource Type:: Dissertation
Full Text:: 1979). Until the first report of laminated root rot on Douglas-fir by Mounce, Bier and Nobles in 1940

Factors affecting development of iris rhizome rot caused by Botrytis convoluta Whetzel and Drayton

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:: neck rot of onion organism (Botryotinia allii) were able to remain viable after being exposed to

Effect of resident epiphytic fungi development of brown rot blossom blight of stone fruits

Creator:: Wittig, Hans P. P.
Abstract:: Antagonistic effects of Epicoccum purpurascens, Aureobasidium pullulans, Trichoderma spp., and Botrytis cinerea on establishment of Monilinia fructicola infections in cherry and peach blossoms were assessed in field and mist chamber studies. Conidia of each fungus were applied to blossoms that were subsequently inoculated with conidia of M fructicola. Mist chamber...
Resource Type:: Masters Thesis
Full Text:: Brown Rot Disease Cycle 2 Biological Control of Blossom Infections 4 Brown Rot Disease Cycle in

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

Creator:: Pack, Paul Eugene
Abstract:: A study was conducted of the influence of various climatic and soil factors on the development of onion pink root disease and of the influences of temperature, light, pH, carbon and nitrogen sources, and vitamins on the growth in vitro of an Oregon isolate of the pink root fungus, Pyrenochaeta...
Resource Type:: Masters Thesis
Full Text:: uses of chemical soil treatments for control of onion pink root. (4) Influences of temper- ature

ScholarsArchive@OSU

The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

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

Brown rot of fruits and fruit trees in Oregon

Environmental Factors Affecting Phytophthora Root Rot of Rhododendron

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Schlerotinia rot of leguminous plants

Genetics of sexuality and population genetics of Phellinus weirii

Factors affecting development of iris rhizome rot caused by Botrytis convoluta Whetzel and Drayton

Effect of resident epiphytic fungi development of brown rot blossom blight of stone fruits

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

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