Index Catalog // ScholarsArchive@OSU

Evaluating Alternative Soil Amendments for Organic Northern Highbush Blueberry Cultivation in Sub-Optimal Soils

Creator:: Retano, Andrea
Abstract:: Escalating demand for organic blueberries has driven a significant expansion of northern highbush blueberry (NHB; Vaccinium corymbosum L.) production area. This expansion is particularly pronounced in regions of the Pacific Northwest where native soil conditions are sub-optimal for NHB, notably east of the Cascade Mountain Range of Oregon and Washington,...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Scott B. Lukas

Effects of Novel Sulfur Applications for pH Management of Calcareous Soil in a New Planting of Organically Grown Northern Highbush Blueberry (Vaccinium corymbosum L.) in the Columbia Basin

Creator:: Gregory, Alexander D.
Abstract:: Organically certified Northern Highbush Blueberry (NHB; Vaccinium corymbosum L.) production in the Columbia Basin region of Oregon and Washington is expanding. Soils in the region are typically calcareous and highly alkaline, often requiring pH adjustment to an ideal range of 4.5–5.5 to support the establishment of the acid-loving, ericaceous crop....
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Scott Lukas

Pressure trunk injections of potassium as a possible short term corrective measure for potassium deficiency in sweet cherry (Prunus avium L.) and prune (Prunus domestica L.)

Creator:: Robbins, Scott Hill
Abstract:: The effect of pressure trunk injections of K₂HPO₄, and K₂SO₄. solutions on the mineral content, growth, yield and fruit quality of sweet cherry and mineral content of prune were investigated. A complimentary study presented in Appendix 1, was conducted to evaluate the short term effectiveness of K soil amendments, mulching...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Scott Hill Robbins for the

Relationships between endogenous phenolic compounds of rhododendron tissues and organs and cold hardiness development

Creator:: Chalker-Scott, Linda
Abstract:: The leaching of water soluble phenolic compounds from cold stressed Rhododendron leaves was found to be a reliable indicator of tissue damage. In sublethally stressed leaf tissues, more and novel phenolic compounds appeared and were hypothesized to be precursors of cell wall components such as lignin and suberin. Subsequent radiolabeling...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Linda Chalker-Scott for the

Sugar transport in strawberry fruit : uptake competition and developmental changes in invertase levels

Creator:: Scott, James Douglas
Abstract:: Mechanisms by which plant organs accumulate photoassimilate are important in determining final sink size and may involve invertase activity. Because strawberry fruit are strong sinks for sugars, changes in invertase levels during development and mechanisms of sugar uptake within the fruit were examined. Fruit from greenhouse-grown, day-neutral strawberries, (Fragaria X...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF James Douglas Scott for the degree

Fine-tuning P fertilizer rates for snap beans (2015) : Oregon Processed Vegetable Commission Continuing Project Report

Creator:: Peachey, Ed and Heinrich, Aaron
Abstract:: The overall objective of this three-year project was to provide farmers with updated fertilizer recommendations for snap beans. The goal was to maximize nutrient use efficiency without compromising bean yield and quality. This was accomplished by partnering with commercial bean growers to conduct on-farm research as well as conducting trials...
Resource Type:: Technical Report
Full Text:: 1. COVER PAGE Project title: Fine-tuning P fertilizer rates for snap beans (2015) PI: Ed

Strawberry fruit quality as affected by soil pH, phosphorus, spring applied nitrogen, and time of harvest

Creator:: Scott, George M., 1957-
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF George M. Scott for the degree of

Weeds With a Purpose: Interseeding Cover Crops into Sweet Corn in Western Oregon

Creator:: Donaldson, Andrew R.
Abstract:: Cover crop establishment in late-season crops, like sweet corn, may be difficult due to the relatively short operational window following crop harvest. In regions like western Oregon, where fall-precipitation can occur when the crop is still in the field, cover crops may not be able to be planted, due to...
Resource Type:: Masters Thesis
Full Text:: members. Dr. Dan Sullivan gave me the opportunity to manage several and Dr. Scott Lukas, and my Graduate

Pear fruit scald : a physiologic disorder involving α-farnesene, conjugated trienes and α-tocopherol

Creator:: Zoffoli, Juan P.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Juan P. Zoffoli for the degree of

Nutrient Profile and Nursery Feeding Damage of Halyomorpha halys (Hempitera: Pentatomidae)

Creator:: Skillman, Victoria P.
Abstract:: Halyomorpha halys Stål, brown marmorated stink bug or BMSB, is now present in 43 US states. A native of eastern Asia, this pest can feed on ~200 different plant species damaging bark, leaves, buds, stems, and fruits. Many of these plant species include wild plants, ornamentals, and agricultural crops. BMSB...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Victoria P. Skillman for the degree of Master of Science in

Development of Viticultural Practices to Improve Winegrape Performance : Experiment I: Effect of Trellis Type and Canopy Location on Yield Components, Fruit Composition, Fruit Set, and Shoot Morphology in Pinot noir Grapevines

Creator:: Ratliff-Peacock, Joey and Candolfi-Vasconcelos, M. Carmo
Abstract:: Five different trellis and training systems were compared in their effect on yield components, fruit composition, fruit set, and shoot morphology in Pinot noir grapevines in 1996 and 1997. This trial was performed on established vines planted on a low-vigor valley floor site, in the Willamette Valley of Oregon. The...
Resource Type:: Technical Report
Full Text:: Cordon); Scott Henry, cane pruned; Lyre, cane pruned; and Geneva Double Curtain (GDC,) cane pruned. The

Development of Viticultural Practices to Improve Winegrape Performance Experiment I: Effect of Trellis Type and Canopy Location on Yield Components, Fruit Composition, Fruit Set, and Shoot Morphology in Pinot noir Grapevines [1997-1998]

Creator:: Ratliff-Peacock, Joey and Candolfi-Vasconcelos, M. Carmo
Abstract:: Five different trellis and training systems were compared in their effect on yield components, fruit composition, fruit set, and shoot morphology in Pinot noir grapevines in 1996 and 1997. This trial was performed on established vines planted on a low-vigor valley floor site, in the Willamette Valley of Oregon. The...
Resource Type:: Technical Report
Full Text:: Cordon); Scott Henry, cane pruned; Lyre, cane pruned; and Geneva Double Curtain (GDC,) cane pruned. The

Evaluation of Methods for Applying Phosphorus, Potassium, and Boron Fertilizers in Northern Highbush Blueberry (Vaccinium corymbosum L.)

Creator:: Leon-Chang, David P.
Abstract:: Previous studies indicated that fertigating with nitrogen (N) was more effective than using granular N fertilizers in production of northern highbush blueberry (Vaccinium corymbosum L.). To build on these findings, four studies were conducted in western Oregon to determine whether fertigation was also an effective method for applying other nutrients,...
Resource Type:: Dissertation
Full Text:: whether fertigation was also an effective method for applying other nutrients, including phosphorus (P

Water management tools and irrigation strategies for blueberry, blackberry, and raspberry production in the Pacific Northwest

Creator:: Carroll, Jesse L.
Abstract:: The Pacific Northwest region of the United States is known for quality production of blueberries, blackberries, and red raspberries. However, as the climate shifts to warmer, drier, and more extreme summers, growing these water intensive berry crops is becoming increasingly difficult. Furthermore, water regulations within agriculture are becoming more prevalent...
Resource Type:: Dissertation
Full Text:: success of the studies contained within this dissertation. Dr. Lisa DeVetter and Dr. Scott Lukas

Postharvest physiology of 'Anjou' pear fruit : relations between mineral nutrition and cork spot, respiration, and ethylene evolution

Creator:: Al-Ani, Abdulilah Mokhlif
Resource Type:: Dissertation
Full Text:: , guidance, and encouragement throughout the course of this study. Appreciation is extended to Drs. P

Impact of cover crops on weed abundance and nitrogen contribution in broccoli, Brassica oleracea var. italica, production systems in the maritime Pacific Northwest

Creator:: Angustia, Segundo Nova
Resource Type:: Masters Thesis
Full Text:: Segundo Nova Angustia presented on October 25. 1995 APPROVED: l^jbr * p—^r- Major Professor

Creation of Hexaploid and Octaploid Zoysiagrass Using Colchicine and Breeding

Creator:: Schwartz, Brian M., Harris-Shultz, Karen R., Contreras, Ryan N., Hans, Christian S., and Jackson, Scott A.
Abstract:: Zoysiagrasses (Zoysia Willd.) are a slow-growing, tetraploid (2n = 4x = 40) turfgrass that can be successfully managed with less input than many other warm-season grasses. Despite extensive genetic and morphological variation, genotypes with the ability to recuperate quickly from damage are rare. Therefore, a long-term effort to increase vegetative...
Resource Type:: Article
Full Text:: , Christian S. Hans, and Scott A. Jackson aBSTRaCT Zoysiagrasses (Zoysia Willd.) are a slow-grow- ing

Cryopreservation of Shoot Tips: Antioxidant Investigations with Rubus and Protocols for Mentha and Vaccinium

Creator:: Uchendu, Esther Eyiuche
Abstract:: Oxidative stress that occurs during cryopreservation may be reduced by the addition of antioxidants. Vitamin E (Vit E), Vitamin C (Vit C), glutathione (GSH), lipoic acid (LA), glycine betaine (GB) and polyvinylpyrrolidone (PVP) were applied at four steps of the PVS2 vitrification protocol (pretreatment, loading, rinsing, and regrowth). Shoot tips...
Resource Type:: Dissertation
Full Text:: students. To Scott Leonard, for assisting with my assays. I am grateful to the following

The physiology of plagiotropic growth of rooted cuttings of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco]

Creator:: Starbuck, Christopher J.
Abstract:: Experiments were conducted to determine if the plagiotropic growth habit of rooted cuttings of Douglas-fir might result from a system favoring the accumulation of indoleacetic acid in the adaxial side of the shoot in response to vertical placement. Actively growing excised branch terminals were subjected to gravitational disorientation to determine...
Resource Type:: Dissertation
Full Text:: members of my graduate committee: Drs. L. H. Fuchigami, P. J. Breen, W. S. McGuire, R. S. Quatrano

Modeling of dormancy and cold hardiness in red-osier dogwood (Cornus sericea L.)

Creator:: Kobayashi, Kent
Abstract:: Effects of temperature and growth stage on vegetative bud development and stem hardiness of red-osier dogwood during winter dormancy were investigated. Results were related to a degree growth stage model and were used to develop models to predict growth stages, to quantify development, and to predict hardiness. Maximum rest development...
Resource Type:: Dissertation
Full Text:: facilities. Appreciation goes to Scott Clark, Candice Lum, Carol Pond, and Katie Haggerty for their

Effects of Irrigation Frequency and Nitrogen Fertilizer Rate on Water Stress, Nitrogen Uptake, and Plant Growth of Container-grown Rhododendron

Creator:: Scagel, Carolyn F., Bi, Guihong, Fuchigami, Leslie H., and Regan, Richard P.
Abstract:: The influence of irrigation frequency (same amount of water per day given at different times) and nitrogen (N) fertilizer rate on water stress [stomatal conductance (gs)], N uptake, and growth (biomass) of container-grown evergreen Rhododendron 'P.J.M. Compact' and 'English Roseum' and deciduous Rhododendron 'Gibraltar' was evaluated. Both N deficiency and...
Resource Type:: Article
Full Text:: , Crystal Springs, MS 39059 Leslie H. Fuchigami and Richard P. Regan Department of Horticulture, Oregon

Infestation of Tracheal Mites (Acari: Tarsonemidae) in Feral and Managed Colonies of Honey Bees (Hymenoptera: Apidae)

Creator:: Burgett, D. Michael, Royce, L. A., Stringer, B. A., Kitprasert, C., and Rossignol, P. A.
Abstract:: This is Oregon Agricultural Station Technical Paper No. 9890.
Resource Type:: Article
Full Text:: . A. STRINGER, C. KITPRASERT, D. M. BURGETT, AND P. A. ROSSIGNOL Department of Entomology, Oregon

High-Density SNP Genotyping of Tomato (Solanum lycopersicum L.) Reveals Patterns of Genetic Variation Due to Breeding

Creator:: Sim, Sung-Chur, Van Deynze, Allen, Stoffel, Kevin, Douches, David S., Zarka, Daniel, Ganal, Martin W., Chetelat, Roger T., Hutton, Samuel F., Scott, John W., Gardner, Randolph G., Panthee, Dilip R., Mutschler, Martha, Myers, James R., and Francis, David M.
Abstract:: The effects of selection on genome variation were investigated and visualized in tomato using a high-density single nucleotide polymorphism (SNP) array. 7,720 SNPs were genotyped on a collection of 426 tomato accessions (410 inbreds and 16 hybrids) and over 97% of the markers were polymorphic in the entire collection. Principal...
Resource Type:: Article
Full Text:: from all other sub-populations (P,0.001), while PC2 separated processing, fresh market, and vintage

Effect of trellis type and canopy location on yield components, fruit composition, shoot morphology, leaf gas exchange, and the dynamics of storage carbohydrates in Pinot noir grapevines

Creator:: Ratliff-Peacock, Joey D.
Abstract:: Five trellis types were compared during 1996 and 1997 for their effect on Pinot noir yield components, fruit composition, fruit set, shoot morphology, leaf gas exchange, and trunk carbohydrate storage. These trellis systems were: upright vertical, cane pruned (double Guyot); upright vertical, spur pruned (bilateral cordon); Scott Henry, cane pruned;...
Resource Type:: Masters Thesis
Full Text:: (double Guyot); upright vertical, spur pruned (bilateral cordon); Scott Henry, cane pruned; Lyre, cane

Attraction of the Invasive Halyomorpha halys (Hemiptera: Pentatomidae) to Traps Baited with Semiochemical Stimuli Across the United States

Creator:: Leskey, Tracy C., Agnello, Arthur, Bergh, J. Christopher, Dively, Galen P., Hamilton, George C., Jentsch, Peter, Khrimian, Ashot, Krawczyk, Grzegorz, Kuhar, Thomas P., Lee, Doo-Hyung, Morrison, William R., III, Polk, Dean F., Rodriguez-Saona, Cesar, Shearer, Peter W., Short, Brent D., Shrewsbury, Paula M., Walgenbach, James F., Weber, Donald C., Welty, Celeste, Whelan, Joanne, Wiman, Nik G., and Zaman, Faruque
Abstract:: A recent identification of the two-component aggregation pheromone of the invasive stink bug species, Halyomorpha halys (Stal), in association with a synergist, has greatly improved the ability to accurately monitor the seasonal abundance and distribution of this destructive pest. We evaluated the attraction of H. halys to black pyramid traps...
Resource Type:: Article
Full Text:: States Leskey, T. C., Agnello, A., Bergh, J. C., Dively, G. P., Hamilton, G. C., Jentsch, P

A phosphorus nutrition study of apples on a volcanic ash soil

Creator:: Maul, Jerry Lee
Abstract:: This study was undertaken in a Red Delicious apple orchard in Oregon's Hood River Valley to determine if low leaf P concentrations were contributing to such observed, orchard disorders as poor shoot growth, shoot dieback and. small fruit size at harvest. Subsurface applications of lime and superphosphate had no effect...
Resource Type:: Masters Thesis
Full Text:: determine if low leaf P concentrations were contributing to such observed, orchard disorders as poor shoot

Alternative Controls for Stephanitis pyrioides in the Pacific Northwest.

Creator:: Graham, Katerina V.
Abstract:: The azalea lace bug (Stephanitis pyrioides Scott) is a global pest of rhododendrons and azaleas (Rhododendron spp.). It is originally from Asia, has been established in the eastern U.S. for the past century, and was recently detected in the Pacific Northwest in 2008-2009. Stephanitis pyrioides feeds on the underside of...
Resource Type:: Masters Thesis
Full Text:: Jana C. Lee The azalea lace bug (Stephanitis pyrioides Scott) is a global pest of

Phenology, Host-Plant Resistance, and Biological Control of Stephanitis pyrioides in Oregon

Creator:: Flores, Salvador M.
Abstract:: The azalea lace bug (Stephanitis pyrioides Scott) is a recently detected invasive pest to the Pacific Northwest and has become a major concern in Oregon. It feeds on azaleas as well as rhododendrons causing stippling on the top side of leaves. The damage is aesthetically displeasing and affects plant vigor...
Resource Type:: Masters Thesis
Full Text:: azalea lace bug (Stephanitis pyrioides Scott) is a recently detected invasive pest to the Pacific

Characterization of geohumus for use in turf

Creator:: Patton, Ty J.
Abstract:: Geohumus is a new, unique hybrid soil amendment made of polyacrylic acid, igneous rock flour, and quartz sand. It is biodegradable and is marketed to increase soil porosity, increase plant yield, and increase plant available water by up to 30%, all while using a low inclusion rate of only 1...
Resource Type:: Masters Thesis

Response of selected vegetables to various inorganic and organic nutrient sources

Creator:: Simon, James Edward
Abstract:: Fertilizer studies at the Oregon State University Vegetable Research Farm were conducted for two years to evaluate the effect of different nutrient sources on yield and selected quality components. Sources of nutrients included sewage sludge, fresh and dried poultry manure, a soybean residue from oil extraction, and several mineral fertilizers....
Resource Type:: Masters Thesis
Full Text:: was as follows: Bell peppers, N; cucumbers, N, P and K; radishes, P and K; snapbeans, P; sweet corn

Inheritance and Allelism Among the B genes in Cucurbita moschata

Creator:: Wilson, Casey K.
Abstract:: One of the most economically important genes in squash (Cucurbita spp.) is the B gene which conditions precocious depletion of chlorophyll in preanthesis fruit. The B genes are found naturally occurring in at least three of the five domesticated species of Cucurbita, including C. pepo, C. maxima and, most recently...
Resource Type:: Masters Thesis
Full Text:: new backgrounds of C. moschata. Parental (P), filial (F), backcross (BC), and test cross (TC

Characterization of cytokinin metabolic enzymes from Phaseolus

Creator:: Dixon, Susan C.
Abstract:: An enzyme catalyzing the formation of O-glucosylzeatin in immature embryos of P. lunatus was purified 2500 fold using ammonium sulfate precipitation followed by affinity and anion exchange chromatography. The enzyme uses trans-zeatin as substrate (Km 28 uM) but not cis-zeatin. ribosylzeatin, or dihydrozeatin. Both UDP-glucose and UDP-xylose can serve as...
Resource Type:: Dissertation
Full Text:: UDPxylose:zeatin O-xylosyltransferase (Turner et al., 1987) isolated by the same procedures from P^ vulgaris

Rootstock, K, and N fertilizer effects in a high density orchard on seasonal mineral elements, endogenous ethylene, maturation and storage quality of 'Starkspur Golden Delicious' apples

Creator:: Fallahi, Esmaeil
Abstract:: Leaf and fruit seasonal mineral fluctuations, fruit endogenous ethylene, maturity and quality of 'Starkspur Golden Delicious' apple (Malus domestica Borkh.) on six rootstocks: Seedling, Mailing (M)1, M7, M26, Mailing Merton (MM)106, OAR-1, in a high density orchard with two levels of each of the soil applied potassium (K₂SO₄) and nitrogen...
Resource Type:: Dissertation
Full Text:: 1980-1982. Leaf concentrations of N, P, and K decreased but Mg and Ca increased, while fruit

The effects of kernel feeding by brown marmorated stink bug (Halyomorpha halys: Hemiptera: Pentatomidae) on commercial hazelnuts (Corylus avellana L.)

Creator:: Hedstrom, Christopher S.
Abstract:: Halyomorpha halys (brown marmorated stink bug, Hemiptera: Pentatomidae), an invasive insect pest, has established populations in the Willamette Valley of Oregon. Halyomorpha halys is a potential pest of many specialty crops in the Willamette Valley, including hazelnuts (Corylus avellana L.). The objectives of this study were to 1) characterize the...
Resource Type:: Masters Thesis
Full Text:: could cease and the result is an empty shell (P<0.001). When the insects fed during kernel expansion

Vineyard floor vegetation management and mineral nutrient competition in grapes

Creator:: Tan, Siyuan
Abstract:: Two experiments were conducted on wine grapes 'Chardonnay' and 'Gewurtztraminer' (Vitis vinifera L.) in 1986 and 1987 to investigate the performance of grapes in competition with perennial ryegrass (Lolium perenne L.) 'Manhattan 11' sod, the competition between sod and grapes for nutrients and moisture and the effects of nitrogen fertilization...
Resource Type:: Masters Thesis
Full Text:: 1987. The sod did not affect grape leaf P, K, Mg, Cu and Zn concentrations but reduced grape leaf

Transfer, characterization and mapping of white mold resistance in an advanced backcross interspecific population between Phaseolus vulgaris and Phaseolus coccineus

Creator:: Zimmerman, Shawna Jean
Abstract:: The advanced backcross-quatitative trait loci (AB-QTL) breeding method was employed on snap bean (OR 91G x PI433251B) and dry bean (M0162 x PI433251B) interspecific populations to transfer resistance QTL from resistant donor parent Phaseolus coccineus into P. vulgaris. For OR 91G x PI433251B, analyses produced nine linkage groups corresponding to...
Resource Type:: Masters Thesis
Full Text:: transfer resistance QTL from resistant donor parent Phaseolus coccineus into P. vulgaris. For OR 91G x

Fingerprinting, reproductive behavior and pollinator dynamics of Buddleja davidii and interspecific hybrids

Creator:: Still, Cara M.
Abstract:: Buddleja davidii (butterfly bush) is a highly adaptable landscape plant known for pollinator attraction. Unfortunately, it is also regarded as an invasive plant in highly disturbed environments across the globe. It is an invasive species in Oregon, officially classified as a class B noxious weed in 2004. Currently the state...
Resource Type:: Masters Thesis
Full Text:: production (Kruskal-Wallis tests p= 2.2e-16 in 2020 and 2021). Top three most fertile hybrids when

Zeatin O-xylosyltransferase in Phaseolus vulgaris : immunological and molecular analyses

Creator:: Martin, Ruth C.
Abstract:: Cytokinins are a group of plant hormones mediating cell division and differentiation. Zeatin is a naturally occurring and highly active cytokinin that is rapidly metabolized in Phaseolus seeds. The metabolites and enzymes mediating the conversion have been studied extensively. Zeatin metabolic enzymes may be utilized in studying the regulation of...
Resource Type:: Dissertation
Full Text:: zeatin O-xylosyltransferase as the candidate. In immature seeds of P. vulgaris, zeatin is rapidly

Development of an in vitro and modification of an in vivo bioassay to screen cherry genotypes for response to inoculation with Pseudomonas syringae pv. syringae

Creator:: Roche, M. Margaret
Abstract:: The bacterium Pseudomonas syringae affects different crops worldwide. In the Willamette Valley of Oregon, P. syringae causes bacterial canker in sweet cherry, severely limiting its production. High grafting of susceptible sweet cherry cultivars to resistant rootstocks is practiced in the Willamette Valley to reduce incidence of this disease. The research...
Resource Type:: Masters Thesis
Full Text:: affects different crops worldwide. In the Willamette Valley of Oregon, P. syringae causes bacterial

Population dynamics, distribution, and control of nematodes in highbush blueberries

Creator:: Schroeder, Jan-Marie
Abstract:: Fluctuations in population density of Pratylenchus sp., Trichodorus sp., and Xiphinema americanum s. 1. in three blueberry fields were determined monthly for one year. Pratylenchus densities were greatest in August and least in October. Three distinct periods of population growth occurred; during January, April, and between June and August. Trichodorus...
Resource Type:: Masters Thesis
Full Text:: significantly less (22%, p< .10) than those taken from two feet away. The presence of a living mulch

Effect of crop load on mineral uptake and partitioning in D'Anjou pears

Creator:: Meddouri, Messaoud
Abstract:: Three thinning levels were applied to twenty-five-year-old D'Anjou pear trees in a completely randomized design with five single-tree replicates on June 2, 1985. Samples of wood, shoot leaves, shoot twigs, spur leaves, spur twigs and fruits were taken every month during the season of growth for mineral analysis. Sampling an...
Resource Type:: Masters Thesis
Full Text:: trees. Fruit removal altered spur and shoot leaf mineral concentrations of H, P, Ca, and Mg but most

Diagnostic approaches to evaluate nutrient status, partitioning, mineral dynamics, and relationships with yield and fruit quality of 'Valencia' orange trees

Creator:: Tami, Mohamed
Abstract:: Five nutritional aspects of 'Valencia' orange production in Agadir, Morocco during 1989-1991 were evaluated: 1) the effect of N and K on yield and fruit quality, 2) leaf sampling time and diagnostic approaches to optimize mineral nutrition, 3) mass and mineral partitioning within individual trees, 4) K-Rb relationships, and 5)...
Resource Type:: Dissertation
Full Text:: . Leaf N, P, K, and nutrient ratios and products varied with time. The least variation occurred in

Effects of irrigation scheduling, using remotely sensed canopy-air temperature differentials, on water relations, yield, and quality of snap beans (Phaseolus vulgaris L.)

Creator:: Bonanno, A. Richard
Abstract:: Field experiments were conducted in 1981 and 1982 to develop a method for using remotely measured leaf canopy-air temperature differences (stress-degree-days (SDD)) to schedule irrigations and to evaluate the effects of differential irrigation on snap bean cultivars, 'Oregon 1604' and 'Galamor'. Effects on soil water potential (SWP), leaf water potential...
Resource Type:: Dissertation
Full Text:: occurred in stressed plants, ^p was still generally lower than in well watered plants throughout the day

Endogenous factors influencing decay susceptibility and quality of 'd' Anjou' pear (Pyrus communis L.) fruit during maturation and storage

Creator:: Boonyakiat, Danai
Abstract:: The major phenolics of 'd' Anjou' pear (Pyrus communis L.) tissues were chlorogenic acid and arbutin. Chlorogenic acid inhibited mycelial growth and spore germination of Penicillium expansum and mycelial growth of Mucor piriformis. Slight increases in radial growth and spore germination of Botrytis cinerea occurred on chlorogenic acid media. Chlorogenic...
Resource Type:: Dissertation
Full Text:: spore germination of P. expansum, and inhibited both mycelial growth and spore germination of M

Substrate production of blueberry : evaluation of soilless media and potassium, nitrogen fertility on growth and nutrition

Creator:: Kingston, Patrick H.
Abstract:: As blueberry (Vaccinium sp.) production has increased in recent decades, a new interest has developed in the cultivation of blueberry in soilless substrate containers. Historically, blueberry has been propagated and grown in soilless substrate at nurseries, but nursery production is short in duration and plants are small relative to a...
Resource Type:: Masters Thesis
Full Text:: also reduced nutrient uptake efficiency of N, P, K, S, Ca, Mg, Fe, Mn, B, Cu, and Zn relative to peat

Boron nutrition and fruit set of 'Italian' prune

Creator:: Hanson, Eric J.
Abstract:: Foliar B sprays have increased fruit set in 'Italian' prune (Prunus domestica L.) by 2 fold in some trials and had no effect in others. This work was conducted to identify reasons for this inconsistent response. Since B levels in flowers are associated with the amount of fruit set, factors...
Resource Type:: Dissertation
Full Text:: xylem vessel connection may impede B movement into buds. The observation that the concentrations of P

The effect of rootstock on the performance of the Vitis vinifera cultivars Pinot noir, Chardonnay, Pinot gris and Merlot

Creator:: Shaffer, Raymond Glen
Abstract:: This study reports finding of two rootstock experiments planted in 1997. The purpose of the first experiment was to evaluate the performance of Pinot noir on 19 phylloxera-resistant rootstocks and as an ungrafted vine. The purpose of the second experiment was to evaluate the performance of V. Vinifera cultivars Pinot...
Resource Type:: Masters Thesis
Full Text:: respectively. Vines received supplemental irrigation and were fertilized with N-P-K during both seasons. In

Effects of varying levels of nitrogen and zinc on growth and nutrient composition of the sweet cherry (Prunus avium L.)

Creator:: Sauser, Jerry Drew
Abstract:: The effects of N and Zn treatments on growth and nutrient composition of sweet cherry trees were investigated in greenhouse and outdoor sand culture experiments. In these studies, one-year old clonal F12-1 sweet cherry trees were grown in dithizone purified nutrient solution consisting of three levels of N (3O, 80,...
Resource Type:: Dissertation
Full Text:: variable effects on the concentrations of P, K, Ca, Mg, Mn, Fe, Cu, and B in the various

Fall applied ethephon and temperature effects on flower bud growth and ovule longevity in Prunus domestica

Creator:: Moreno-Simunovic, Yerko M.
Abstract:: In the Pacific Northwest some prune cultivars often exhibit inconsistent fruit set. Several factors have been associated with this characteristic. Temperature, genotype and boron content are among the most frequently mentioned. Studies were conducted to determine the effect of fall ethephon application on flower bud growth and ovule longevity in...
Resource Type:: Masters Thesis
Full Text:: 'Italian'. Higher concentration of Ca and lower concentration of P, as well as higher B content were

Breeding Snap Beans for Organic Agriculture: Genomic Shifts under Different Agricultural Management Systems

Creator:: King, Ryan M.
Abstract:: Although the concept of breeding crops for organic agricultural systems has been around for decades, few studies have been reported for vegetable crops to quantify and compare how conventional and organic systems differ in their selection pressures on genotypes advancing through the breeding cycle; especially research utilizing modern sequencing capabilities....
Resource Type:: Masters Thesis
Full Text:: cM average P. vulgaris genetic map length). The linkage maps of the HYPR populations contained

Response of strawberry plants to manganese nutrition

Creator:: Sabharwal, Sudarshan Lal
Abstract:: The effects of manganese nutrition on growth, mineral composition, carbohydrate and nitrogen metabolism, IAA oxidase and phenols of 'Northwest' strawberry plants are reported. Growth and mineral composition response were investigated in sand culture and Hoagland's solution 2 modified to contain 0.0, 0.5, 2.5, 12.5, 25.0, 62.5 and 125.0 ppm substrate...
Resource Type:: Dissertation
Full Text:: . The deficiency and excess of Mn resulted in a decrease in the concentration of Mg and P in the

Breeding Snap Beans for Organic Agriculture: Quantification and Application of Key Traits

Creator:: Park, Hayley E.
Abstract:: Improving crop cultivars for use on organic farms is pertinent, as current elite germplasm is less resilient within the more variable context of organic farm environments. Although a growing number of studies have focused on organic plant breeding in cereal crops, very few have focused on vegetable crops, especially those...
Resource Type:: Masters Thesis
Full Text:: from P. vulgaris beyond the initial BeadChip, provided us with the ability to improve the maps. Gains

Development of a multi-parent advanced generation inter-cross (MAGIC) population and analysis of a nested association mapping (NAM) population for improvement of genetic resistance to white mold in snap bean

Creator:: Ağır, Ahmet R.
Abstract:: Common bean (Phaseolus vulgaris L.) comes in a huge assortment of fresh and dried varieties, including snap beans, kidney beans, and pinto beans. Together, these and other market classes provide a third of the daily dietary protein in some cultures, particularly in Africa, Asia, and developing nations in the Americas....
Resource Type:: Masters Thesis
Full Text:: backcross population developed by introgressing WM resistance from P. coccineus. The common bean parents

Weed Control Strategies for Interseeding of Cover Crops in Non-Transgenic Sweet Corn

Creator:: Peachey, Ed and Donaldson, Andrew
Abstract:: Presented at the 72nd Annual Meeting of the Western Society of Weed Science.
Resource Type:: Presentation
Full Text:: corn harvest 12 Fallow + None Weed control applied Year 1 and 2: ◦Banded Dimethenamid-P 10 inch

[8-¹⁴C]zeatin metabolism in Phaseolus embryos

Creator:: Lee, Yun-hwa
Resource Type:: Masters Thesis
Full Text:: ]zeatin was examined in embryos of Phaseolus vulgaris cv. Great Northern (GN) and P^ lunatus cv

Identification of cytokinin reductase in Phaseolus embryos

Creator:: Martin, Ruth C.
Abstract:: A critical balance of hormones is necessary for normal plant development. Therefore, precise mechanisms must exist to maintain proper levels of cytokinins, a group of hormones regulating cell division and differentiation. Structural modifications of the naturally occurring cytokinin, zeatin; including the oxidation, O-glycosylation and reduction of the N⁶-side chain; may...
Resource Type:: Masters Thesis
Full Text:: identified in cell cultures. Differences in structure activity relationship occur between P^. lunatus and

Rubus spp. seed germination and morphology

Creator:: Peacock, Derek N.
Abstract:: Rubus spp. seeds have a thick protective endocarp and testa (seedcoat) that can restrict germination even under favorable conditions. The effect of pregermination treatments were studied in Rubus chamaemorus L., R. eustephanos Focke ex Diels, R. idaeus 'Amber' L., R. leucodermis Douglas ex Torrey & A. Gray, R. multibracteatus A....
Resource Type:: Masters Thesis
Full Text:: inhibitory substances (Cambell and Erasmus, 1988). But some sensitivity to NaOCl was reported by Scott and

A comparative morphological study of apple varieties

Creator:: Failing, Kate Whittlesey
Resource Type:: Masters Thesis
Full Text:: . Ungrouped. Variety. Pumpkin Russet Walbridge Scott Codlin Vfui t e \7 int er P earmain

Increasing liming efficiency on processed vegetable farms (2016) : Oregon Processed Vegetable Commission Final Project Report

Creator:: Sullivan, Dan M. and Heinrich, Aaron
Abstract:: Several new powdered limestone products that are more finely ground (smaller particle size distribution) than products historically used have become commercially available. A major factor influencing the effectiveness of a liming material is its particle size distribution, with smaller particles reacting more quickly. Because lime efficiency estimates for various particle...
Resource Type:: Technical Report
Full Text:: lime incorporation into soil. However, more recent research has challenged their finding. Scott et al

Seed Traits and Genes Important for Translational Biology—Highlights from Recent Discoveries

Creator:: Martinez-Andujar, Cristina, Martin, Ruth C., and Nonogaki, Hiroyuki
Abstract:: Seeds provide food, feed, fiber and fuel. They are also an important delivery system of genetic information, which is essential for the survival of wild species in ecosystems and the production of agricultural crops. In this review, seed traits and genes that are potentially important for agricultural applications are discussed....
Resource Type:: Article
Full Text:: inter- ploidy crosses (Haig and Westoby 1991, Scott et al. 1998). However, AP2 acts independently of

Evaluation of carotenoids and anthocyanins in high pigment, processing, heirloom and anthocyanin fruit tomatoes

Creator:: Jones, Carl M.
Resource Type:: Masters Thesis
Full Text:: system allows separation and quantitation of the primary carotenoids present in tomato: lycopene, P

Phenotyping diverse strawberry (Fragaria spp.) germplasm for aid in marker- assisted breeding, and marker-trait association for red stele (Phytophthora fragariae) resistance marker Rpf1

Creator:: Mathey, Megan M.
Abstract:: Strawberry is one of four crops included in the USDA-NIFA Specialty Crop Research Initiative-funded RosBREED project along with apple, peach, and cherry. Phenotyping strawberry for specific horticultural and commercial traits is important to identify associations with genotypic marker(s). This process is the first step in translating genomic knowledge into enhanced...
Resource Type:: Masters Thesis
Full Text:: locations in 2011 and 2012. Mean performance of genotypes over locations varied significantly (P ! 0.0001

Inheritance of resistance to the lentil strain of pea seedborne mosaic virus in Pisum sativum L.

Creator:: Kasimor, Kathryn T.
Abstract:: The inheritance mode of pea-resistance to the Lentil Strain of Pea Seedborne Mosaic Virus (PSbMV-L) was studied. In addition, commercial pea cultivars, Plant Introduction (P.I.) lines and Oregon State University (OSU) breeding lines were tested for susceptibility to this virus. These lines were also tested for their reaction to Bean...
Resource Type:: Masters Thesis
Full Text:: is expected to be eliminated from the P^sum p.i. collection by 1990 (Hampton, personal

Relationship of seed size, seed washing, plant density and harvest date to yield and plant stand in table beet (Beta vulgaris L.)

Creator:: Liere, Dean G.
Resource Type:: Masters Thesis
Full Text:: , Corvallis, on an alluvial, silty clay loam soil. Preplant applications included 67.2 kg N/ha, 88.7 kg P

Effect of crop density on vegetative and fruit growth and on mineral status in Nijiseiki pear (Pyrus pyrifolia)

Creator:: Gu, Sanliang
Resource Type:: Masters Thesis
Full Text:: : ^ Porter B. Lombard Fruitlets of Nijiseiki (Pyrus pyrifolia) on P. betulaefolia pear trees were thinned

The inheritance of resistance to fruit cracking in the tomato (Lycopersicon esculentum L.)

Creator:: Hudson, Leland Wilson
Resource Type:: Masters Thesis
Full Text:: . Date theai* is presented (-^/P-f-1--^ 1 J^fL I!yped by Vivian Hudson TABLE OF CONTENTS

Improving nitrogen management with cover crops in organic broccoli production

Creator:: Garrett, Amy
Abstract:: Legume cover crops can serve as important sources of nitrogen (N) in sustainable agriculture and can be economically beneficial when fertilizer inputs are reduced without a yield reduction. Synchronizing N mineralization from organic materials with the needs of the subsequent crop is a challenge for organic growers. Predicting plant available...
Resource Type:: Masters Thesis
Full Text:: getting my field established the first year. Jim Ervin, Scott Robbins, and Don Heinz-Cook for their

Microsatellite marker development and molecular characterization in highbush blueberry (Vaccinium corymbosum L.) and Vaccinium species

Creator:: Boches, Peter
Abstract:: Pre-existing Expressed Sequence Tag (EST) libraries (1,305 sequences) and a newly constructed microsatellite-enriched genomic library (136 clones) from the V. corymbosum cultivar 'Bluecrop' were screened for unique Simple Sequence Repeat (SSR)-containing sequences. Our goal was to develop a set of robust SSR markers for use in managing the National Clonal...
Resource Type:: Masters Thesis
Full Text:: . Molecular Breeding 5:233-244 Darrow GM, Scott DH (1966) Varieties and their characteristics. In Eck P (ed

Factors affecting survival and vigor of cold-stored strawberry nursery stock

Creator:: Decker, Bruce Richard
Abstract:: Field survivals of strawberry (Fragaria x ananassa) runner plants dug from December to April in both 1979 and 1980 were above 9C% when planted about May 1. When plants from the same digging dates were planted in early June, survival of March-dug 'Olympus' declined to 88% and survival of late-April-dug...
Resource Type:: Masters Thesis
Full Text:: nutrient deficient plants were less hardy than plants with balanced N-P-K nutrition, both at the onset

Effects of Pesticide Exposure on Honey Bee Health : Impacts of Pesticide Interactions and Exposure Through Multiple Routes

Creator:: Parreira, Stephanie
Abstract:: Honey bees (Apis mellifera) are responsible for approximately $17 billion in crop production per year in the United States, and are arguably the most important pollinators in the nation. The future of crop pollination and production is threatened by widespread national honey bee colony losses, which have averaged approximately 30%...
Resource Type:: Masters Thesis
Full Text:: : Tables of F-statistics and p-values omitted from Chapter 2 ...... 238 Appendix Y1: Details of Protocols

Marking, movement, and management of Drosophila suzukii in Oregon berry crops

Creator:: Klick, Jimmy
Abstract:: Drosophila suzukii Matsumura (Diptera: Drosophilidae) are small invasive flies that in the past five years (2009-2014) invaded berry and stone fruit production regions in Europe and the Americas. Evolutionary adaptations, biological traits, and anthropogenic factors have contributed to its current status as a global pest. Females oviposit eggs into ripe...
Resource Type:: Dissertation
Full Text:: Mindolovich, Danielle Selleck, Scott Shane, Bev Thomas, Amelia Thornhill, Jeff Wong) created an aura of

An evaluation of the Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts (Corylus avellana) in Oregon

Creator:: Alkoshab, Othman
Abstract:: This study evaluates Beufil's Diagnosis and Recommendation Integrated System (DRIS) on hazelnuts. Although sufficiency ranges are currently the main approach for fertilizer recommendations in Oregon, DRIS enhanced nutritional interpretations, and might alter recommendations. Reference values (DRIS norms) were developed using 15 years of published and unpublished field data. DRIS indices...
Resource Type:: Masters Thesis
Full Text:: nitrogen treatments on hazelnuts using ratios containing N, P, K, and Mn 6. DRIS indices, balance status

The effects of light on photosynthesis and rooting of leafy cuttings of Pisum sativum L.

Creator:: Davis, Tim D.
Abstract:: The effects of light incident on leafy cuttings is quite complex because' light influences several factors which may affect root formation. One effect of light is to influence the carbohydrate status of the cutting by influencing photosynthesis. The role of current photosynthate in the rooting of leafy cuttings is uncertain....
Resource Type:: Masters Thesis
Full Text:: - creased. Similarly Scott and Marston (57) improved the rooting of Saintpaulia ionantha Wendl. cuttings

Effect of medium, fertilizer rates and transplant methods on the growth of young apple trees

Creator:: Lu, Can
Abstract:: This study compared leaf mold, bark, automobile waste and the combination of half leaf on the top and half bark on the bottom as growing media for young apple nursery stock. Although the chemical and physical analysis of leaf mold was superior to the bark, trees in leaf mold showed...
Resource Type:: Masters Thesis
Full Text:: Analysis laboratory, for his assistance and cooperation. Scott, Robbins, Lewis-Brown Farm, for their

Preharvest fruit analysis as a predictor of D'Anjou pear and Yellow Newtown apple physiological disorders, storage quality and ripening behavior

Creator:: Vaz, Rui Luiz
Resource Type:: Dissertation
Full Text:: , were sampled and analyzed for Ca, P, K, N, Mg, Mn, Fe, Zn, B, S, Na and Se. There were higher bitter

Influence of abiotic and biotic factors on developmental parameters of Drosophila suzukii (Diptera: Drosophilidae)

Creator:: Tochen, Samantha
Abstract:: Drosophila suzukii (Diptera: Drosophilidae), a pest of thin-skinned fruits, has been detected worldwide recently, with new locations of establishment determined annually since it first became a concern on continental North America in 2008. Drosophila suzukii females are different from most other drosophilids as being one of two known species capable...
Resource Type:: Masters Thesis
Full Text:: host for D. suzukii whereas P. avium and R. armeniacus provide a late season host (Lee et al. 2014

Influence of photosynthesis and carbohydrates on adventitious root formation by leafy cuttings

Creator:: Davis, Tim D.
Abstract:: Many investigators have suggested that current photosynthate supply can limit adventitious root formation on leafy cuttings. Accordingly, studies were undertaken to determine the effects of altering photosynthesis and carbohydrate levels on adventitious root formation by leafy cuttings of a number of different species. Pea cuttings rooted at high CO₂ (1800...
Resource Type:: Dissertation
Full Text:: rooting and dry weight of P. nival is cuttings 155 A-6. Treatment details for localized etiolation of

Life-Cycle and Playability Analysis of Natural Turfgrass and Synthetic Infill Playing Surfaces Under Field Conditions

Creator:: Daviscourt Brian L.
Abstract:: The perception of a long-term cost advantage of synthetic infill turf systems relative to natural grass systems has contributed to a rise in their popularity in the USA. However, few comprehensive cost assessments of natural grass and synthetic infill systems exist. There are also no studies looking at interactions between...
Resource Type:: Masters Thesis
Full Text:: =15 Almutawa M., Scott M., George K.P., Drust B. 2014. The incidence and nature of injuries

Effects of certain pollinators on fruit and seed development in the highbush blueberry

Creator:: Cremins, William Joseph
Resource Type:: Masters Thesis
Full Text:: the necessity of insect pollination. Merrill (19, p.33) went so far as to say "Of such greater

Absciscic acid induction of environmental stress tolerance in plant cells

Creator:: Tanino, Karen K.
Resource Type:: Dissertation
Full Text:: Acclimation 19 2.3.1 Metabolism of Sucrose During Cold Acclimation 20 2.4 Hydrostatic Presssure (P) 22

Evaluation of varieties, clones and rootstocks Evaluation of Vitis Rootstocks for Tolerance to Low Soil pH

Creator:: Taylor, Patrick, Candolfi-Vasconcelos, M. Carmo, and Baham, John
Abstract:: Extensive information on rootstock resistance to lime is available since it has been one of the major selection criteria in Europe an rootstock breeding programs. Information regarding the performance of rootstocks in acidic soils however, is not so prevalent. Differences in genotype tolerance to high acidity maybe related to different...
Resource Type:: Technical Report
Full Text:: 15 10.7 2.2 9 RupestrisBerlandieri 1103 P 9.3 5 18 9 10.7 3.8 10 Ripar/Rup/Cordifolia 44-53 M 6.1 3

Integration of conservation tilage and cover crops in broccoli production systems of the Pacific Northwest

Creator:: O'Brien, Timothy John
Abstract:: Field and greenhouse experiments were conducted in 1996 and 1997 to evaluate the effects of integrating conservation tillage and cover cropping on broccoli production as well as agroecological parameters. A field experiment was conducted during 1996-97 at the Oregon State University Horticulture Research farm near Corvallis, OR. The specific objectives...
Resource Type:: Masters Thesis
Full Text:: the field. Gratitude is extended to Randy Hopson, Gary Horton, Scott Robbins, and Matt Compton who

A microscopic and phenological study of pollen development and bloom in selected cultivars of hazelnut (Corylus avellana)

Creator:: Tiyayon, Chantalak
Abstract:: Pollen development is an important process in male flower development, the timing of which may be correlated with time of pollen shed in hazelnut (Corylus avellana L.). Early to very late blooming cultivars were identified and the relationship of microsporogenesis and microgametogenesis, and time of pollen shed were studied in...
Resource Type:: Dissertation
Full Text:: between early, mid, and late pollen shedding cultivars. 1.2. Pollen Development A review by Scott et

Effects of harvest date on sweet corn maturity, sugar content and yield

Creator:: Wong, Yueh-Mei
Abstract:: Studies were conducted in 1976 and 1977 on the effects of harvest dates on maturity, yields and sugar content of four cultivars of sweet corn. The cultivars were 'Golden Cross Bantam', 'Jubilee', 'Rapidpak' and 'Tendertreat'. Moisture content of kernels ranged from 80 to 67 per cent for the six harvest...
Resource Type:: Masters Thesis
Full Text:: important factor affecting the maturation process of sweet corn, especially kernel moisture content. Scott

Characterization of European hazelnut (Corylus avellana) cultivars using SSR markers

Creator:: Gokirmak, Tufan
Abstract:: Twenty-one pairs of simple sequence repeat (SSR) primers were used to investigate genetic diversity in 270 accessions of European hazelnut (Corylus avellana) representing a wide geographic range. A capillary electrophoresis system and ABI Genescan® and Genotyper® software were used to determine the allele size generated from each PCR reaction based...
Resource Type:: Masters Thesis
Full Text:: fingerprinting (Thomas and Scott, 1993), linkage map construction (Bowcock et al., 1994; Kazan et al., 1992

The effect of soil applied boron on fruit deformity, yield and boron partitioning in "Tristar" and "Benton" strawberries

Creator:: Riggs, Dale Ila Miles
Resource Type:: Masters Thesis
Full Text:: of boron for adequate growth. In contrast, a sand culture study done by Iwakiri and Scott (35

Effects of Biochar and Nitrogen-Enriched Soil Amendments on Plant Growth, Mineral Nutrition, and Early Fruit Production in Highbush Blueberry (Vaccinium sp.)

Creator:: Sales, Bryan K.
Abstract:: The goal of the work in this dissertation was to identify alternative soil amendments to improve plant growth and yield during establishment of highbush blueberry (Vaccinium hybrid). Woody materials, such as sawdust and wood chips, have a high carbon to nitrogen (C:N) ratio and low water holding capacity, which can...
Resource Type:: Dissertation
Full Text:: very fortunate to have Scott Orr as my lab manager. Scott was an incredible resource for me

The influence of certain factors on the acidity and sugar content of the Jersey blueberry

Creator:: Uhe, George
Resource Type:: Masters Thesis
Full Text:: by Morrow, Darrow, and Scott (14, p. 265). The resulting product was all of the mature seeds

Optimization of Agrochemical Application Technologies, Strategies and Chemical Control of Spotted-wing Drosophila, Drosophila suzukii (Matsumura), Diptera: Drosophilidae as a Model Organism and Identification of Trisiloxane and Silane Surfactants in Agricultural Spray Adjuvants and Reference Materials

Creator:: Mermer, Serhan
Abstract:: Drosophila suzukii (Diptera: Drosophilidae) is an insect of global concern that causes serious damage to soft-skinned fruits. D. suzukii is widespread in North America, South America, Europe, and Asia and is listed as an invasive pest with strict quarantine protocols governing import and export. Given the damage caused by D....
Resource Type:: Dissertation
Full Text:: implemented the experiments. Philip D. Fanning, Steven Van Timmeren, Stephen P. Hesler, Jamal H. Hunter

Reducing energy inputs in Oregon vegetable production to enhance economic and environmental sustainability: A final report submitted to the Oregon Processed Vegetable Commission, 2009

Creator:: Luna, John M.
Abstract:: Energy input comparisons between tillage systems; evaluation of the value of legumes as part of a cover crop mixture used in strip-till sweet corn production; evaluation of the nitrogen contribution of legume-based cover crops to organic vegetable production.
Resource Type:: Technical Report
Full Text:: ‐ Ap r  9‐ M ay   9‐ Ju n  9‐ Ju l  9‐ Au g  9‐ Se p  9‐ O ct   9‐ N ov   9‐ De c  P ri ce  p

The interaction of photosynthesis and auxin transport during adventitious root formation in Pisum sativum L. stem cuttings and the effect of stock plant etiolation on rooting

Creator:: Kumpula, Carol L.
Abstract:: Adventitious root formation can be inhibited in stem cuttings of Pisum sativum L. (pea), an easy-to-root species, if the apical and lateral buds are removed. Application of exogenous auxin to the apical stump can replace the rooting stimulus produced by the buds. Root number was reduced by 50 to 100%...
Resource Type:: Masters Thesis
Full Text:: light and dark grown plants, or even less auxin in dark grown plants (Avery, 1937; Scott and Briggs

Factors influencing fruit bud formation and yield of the Marion blackberry

Creator:: Sheets, W. A. (Willis Arden)
Abstract:: In 1960 tests were initiated on the Marion blackberry (Rubus hybrid) to study the effect of (1) plant spacing, (2) time of training canes to the trellis and (3) amount of cane to train to the trellis with regard to fruit bud formation and total yield. Plant spacing varied with...
Resource Type:: Masters Thesis
Full Text:: planted from 1961 through 1965 were planted at a higher plant density per acre. See Fig. 1 (p. 2). The

Low Maintenance Strategies and Challenges within Oregon School Landscapes

Creator:: Gould, Micah A.
Abstract:: Ornamental landscapes require considerable amounts of inputs, including but not limited to irrigation, mowing or pruning, fertilization, and pest management. However, school systems have limited budgets, which reduce their access to resources and labor hours. Therefore, the objective of this project is to identify ground covers that can compete with...
Resource Type:: Masters Thesis
Full Text:: researchers classify annual bluegrass into two varieties; P. annua var. annua and the perennial type P

Determining the Impacts of Dormant Pruning Methods and Nitrogen Fertilization on Vitis vinifera 'Pinot noir' Bud Fruitfulness and Yield

Creator:: Ulmer, Miranda R.
Abstract:: The majority of grapes grown in Oregon are produced in Western Oregon’s Willamette Valley, where two-thirds of the acreage is planted to Pinot noir. The production of Pinot noir in the Willamette Valley comes at a high cost, and growers are seeking ways to increase profits while maintaining quality fruit...
Resource Type:: Masters Thesis
Full Text:: , allowed us to work on site, and we collaborated with Tim Scott, Ryan McAdams, Alex Cabrera, and Leigh

Rooting of pear hardwood cuttings using VA mycorrhizal fungi, Agrobacterium rhizogenes and rooting hormones

Creator:: Gonzalez-Caldwell, Sandra
Resource Type:: Masters Thesis
Full Text:: conditions for 3.5 months and watered and fertilized weekly with Long Ashton Plant Nutrient Solution (P

Comparison of baits for monitoring the spotted wing Drosophila, Drosophila suzukii

Creator:: Kleiber, Joseph R.
Abstract:: Spotted wing Drosophila (SWD), Drosophila suzukii (Diptera: Drosophilidae), is a pest of small and stone fruits that is widely distributed across much of the United States, Canada, Europe and Asia. Unlike other members of the Drosophilidae that only lay eggs in overripe or rotting fruit, SWD infest ripening and ripe...
Resource Type:: Masters Thesis
Full Text:: for me to kill; Scott Shane, Bev Thomas, and Amelia Thornhill for assistance in the lab and field

Partial purification and characterization of a zeatin Cis-trans isomerase from Phaseolus vulgaris L.

Creator:: Bassil, Nahla V.
Abstract:: Conversion of exogenous cis-zeatin to trans-zeatin in immature seeds of Phaseolus vulgaris L. led to the isolation of a cis-trans isomerase from the endosperm. The enzyme was purified over 2000-fold by chromatography on a series of FPLC (anion exchange, gel filtration, and hydrophobic interaction) and Concanavalin A columns. Non-enzymatic isomerization...
Resource Type:: Dissertation
Full Text:: zeatin cis-trans isomerase from P. vulgaris endosperm. . . 49 ABBREVIATIONS AMP adenosine

Evaluation of allelopathy as a mechanism by which buckwheat suppresses Canada thistle and its mycorrhizae

Creator:: Eskelsen, Steven R.
Abstract:: Experiments were conducted to determine if allelopathy is a mechanism by which buckwheat interferes with a) the growth of Canada thistle and/or b) mycorrhizae colonization in Canada thistle roots. In a competition experiment, buckwheat plant biomass was only affected by the intraspecific competition from other buckwheat plants and not by...
Resource Type:: Dissertation
Full Text:: , Scott Robbins (YES Scott! !--you can finally kill all of the Canada thistle at Lewis-Brown~good luck

Behavior of Drosophila suzukii in Relation to Abiotic, Biotic, and Nutrient Factors

Creator:: Park, Kyoo Rok
Abstract:: Drosophila suzukii (Diptera: Drosophilidae), is a serious pest in soft and stone fruit industries worldwide. The unique serrated ovipositor of female Drosophila suzukii allowed the species to reproduce in intact, ripening fruit before the harvest. Current control methods rely heavily on insecticide application, only becoming less profitable due to the...
Resource Type:: Dissertation
Full Text:: Scott were instrumental in the development and writing a written method for sugar analysis in Chapter

Assimilate Partitioning in Vitis vinifera During the Reproductive Period

Creator:: Finger, Sarah A. and Candolfi-Vasconcelos, M. Carmo
Abstract:: Objectives of proposed research: 1. Investigate the relationship between abscisic acid (ABA) and auxins and the regulation of carbon partitioning. 2. Investigate the origin of ABA present in the fruit during ripening and attempt to modify the partitioning pattern through manipulation of endogenous ABA levels using mefluidide (ABA biosynthesis promoter)...
Resource Type:: Technical Report
Full Text:: analyzed . Literature Cited Candolfi-Vasconcelos, M. C., M. P . Candolfi, W. Koblet . Retranslocation

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