Index Catalog // ScholarsArchive@OSU

Irrigation and plant density effects on head rot and yield of broccoli

Creator:: Ludy, Robin L.
Abstract:: Effects of amount of applied water and frequency of irrigation on head rot and yield of three broccoli cultivars were evaluated in 1987 and 1988. Two irrigation frequencies were established with a line-source sprinkler system for 5.5 weeks during heading. The low-frequency experiment was watered once per week and the...
Resource Type:: Masters Thesis
Full Text:: weather conditions. To date, no chemicals have provided adequate control of this disease and only

Assays to determine tolerance of cherry rootstock to bacterial canker caused by Pseudomonas syringae pv. syringae

Creator:: Krzesinska, Elzbieta Z.
Abstract:: Bacterial canker, caused by Pseudomonas syringae pv. syringae is recognized as one of the greatest limiting factors in cherry production in Oregon. Disease incidence may be decreased when susceptible cultivars are high-grafted onto tolerant/resistant rootstocks. This research was begun to develop a rapid screening method which could be used to...
Resource Type:: Masters Thesis
Full Text:: usable criterion of the disease in this assay. 'Napoleon' and 'Corum' had significantly higher

Relationships of ammonium and nitrate status with inflorescence necrosis in 'Pinot noir' grapevines

Creator:: Gu, Sanliang
Abstract:: Inflorescence necrosis (IN) is a recently described disorder in grapes characterized by partial or complete deterioration of the pedicel and rachis near bloom. Elevated levels of ammonium in the rachis are associated with the incidence of IN and hypothesized as the cause of the disorder. An incubation system with single-node...
Resource Type:: Dissertation
Full Text:: and Nitrate Status with Inflorescence Necrosis in 'Pinot noir' Grapevines. Abstract approved

Inflorescence necrosis, ammonium, and evidence for ferredoxin-glutamate synthase activity in grape (Vitis vinifera L.)

Creator:: Creasy, Glen L.
Abstract:: Death of flower parts near bloom due to inflorescence necrosis (IN) is associated with high ammonium (NH₄⁺) concentration in flower clusters, shade, cool wet weather preceding bloom, and excessive vigor. Faults in NH₄⁺ assimilation are suspected to cause a rise in NH₄⁺ concentration to toxic levels in flower cluster but...
Resource Type:: Dissertation
Full Text:: , Ammonium, and Evidence for Ferredoxin-Glutamate Synthase Activity in Grape (Vitis vinifera L.) Abstract

On-farm inquiry and assessment of tillage and cover cropping for white mold control in snap bean production

Creator:: Harrison, Elizabeth Langham.
Abstract:: Cultural practices in snap bean production were evaluated at the Oregon State University Vegetable Research Farm Corvallis, Oregon. In addition, decision-making in snap bean production was assessed on five farms in the Coburg-Junction City-Harrisburg regions of the Willamette Valley, Oregon. A field experiment with cover crop and tillage techniques was...
Resource Type:: Masters Thesis
Full Text:: Cover Crop and Tillage Management on Disease Incidence and Sclerotia Degradation of Sclerotinia

Determination of α-Amylase activity and soluble starch content in normal and cork spotted D̀'Anjou' pear fruit

Creator:: Li, Shiao Jing
Abstract:: There was a linear relationship of [alpha]-amylase activity from 2 to 12 hours incubation in both freeze-dried and fresh 'd'Anjou' pear fruit tissue. Activity was greater, however, in fresh as compared with freeze-dried tissues. [alpha]-Amylase activity from both types of samples was not detected until 60 minutes incubation. After 90...
Resource Type:: Masters Thesis
Full Text:: Activity and Soluble Starch Content in Normal and Cork Spotted ^D'Aniou' Pear Fruit Abstract approved

Girdling and shading effects on inflorescence necrosis and rachis composition of pinot noir grapevine

Creator:: Ibacache, Antonio E.
Abstract:: There are several grape disorders that reduce fruit set. One, millerandage, is from poor fertilization to produce "hen and chicken" or small seedless berries; while another, Coulure, is the failure of grape flowers to develop into berries. A third one, inflorescence necrosis (INec), is a disorder that should be in...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Horticulture presented on November 20. 1990. Title: Girdling and Shading

Detection, identification, and antibiotic treatments of bacterial contaminants from micropropagated strawberries

Creator:: Tanprasert, Piyarak
Abstract:: Bacterial contamination is one of the most important problems both in plant tissue culture research and commercial laboratories. Early detection of contaminants saves time, effort, and money. Strawberry runner explants were screened for contaminants during June to August, 1994 and 1995. Most contaminants found were bacterial rather than fungal. Bacterial...
Resource Type:: Masters Thesis
Full Text:: growth room walls and the eggs remain viable for a long time. Thrips are another common pest of plants

Investigation of novel sources of genetic resistance to eastern filbert blight

Creator:: Lunde, China F.
Abstract:: To identify novel host genetic resistance to eastern filbert blight, caused by the fungus Anisogramma anomala (Peck) E. Muller, ninety European hazelnut {Corylus avellana L.) varieties and interspecific hybrids (with C. americana Marsh, or C. colurna L.) were screened for response to the eastern filbert blight pathogen after inoculation in...
Resource Type:: Masters Thesis
Full Text:: of'Zimmerman' fits a 3:1 ratio 45 3.3 Field and greenhouse data for disease response are congruent 46 3.4

Genetic resistance to eastern filbert blight

Creator:: Coyne, Clarice Jean
Abstract:: Eastern filbert blight, caused by Anisogramma anomala (Peck) E. Muller, is a serious threat to hazelnut (Corylus avellana L.) production. Resistant cultivars offer the best control. Screening systems were needed to reliably identify disease, particularly in immune progeny derived from 'Gasaway'. An indirect enzyme-linked immunosorbant assay (ELISA) was developed using...
Resource Type:: Dissertation
Full Text:: 1993. Disease incidence and proportion of wood cankered as determined by the two methods were

ScholarsArchive@OSU

Irrigation and plant density effects on head rot and yield of broccoli

Assays to determine tolerance of cherry rootstock to bacterial canker caused by Pseudomonas syringae pv. syringae

Relationships of ammonium and nitrate status with inflorescence necrosis in 'Pinot noir' grapevines

Inflorescence necrosis, ammonium, and evidence for ferredoxin-glutamate synthase activity in grape (Vitis vinifera L.)

On-farm inquiry and assessment of tillage and cover cropping for white mold control in snap bean production

Determination of α-Amylase activity and soluble starch content in normal and cork spotted D̀'Anjou' pear fruit

Girdling and shading effects on inflorescence necrosis and rachis composition of pinot noir grapevine

Detection, identification, and antibiotic treatments of bacterial contaminants from micropropagated strawberries

Investigation of novel sources of genetic resistance to eastern filbert blight

Genetic resistance to eastern filbert blight

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