Index Catalog // ScholarsArchive@OSU

Knapweed Hay as a Nutritional Supplement for Beef Cows Fed Low-Quality Forage

Creator:: Bohnert, David W., Sheley, Roger L., Falck, Stephanie J., and Nyman, Arthur A.
Abstract:: Advancing our ability to use invasive plants for producing commodities is central to the agricultural industry. Our objective was to evaluate Russian knapweed (Acroptilon repens [L.] DC.) as a winter feed supplement for ruminant livestock. In Experiment 1, we utilized three ruminally cannulated steers in a completely randomized design to...
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Full Text:: Knapweed Hay as a Nutritional Supplement for Beef Cows Fed

Making hay, the right way: Oregon farmers organize to market certified weed-free, premium hay

Creator:: Schofer, Dan, Sherwin, Dan, and Diebel, Penelope
Abstract:: Grower cooperatives and quasi-cooperative producer associations have a long tradition of using group action to establish or improve quality standards and to promote product uniformity for their crops and livestock. These efforts have often been key to creating new domestic and international markets. Such endeavors often include working closely with...
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Full Text:: be seen in northeast Oregon, where hay growers formed the Wallowa County Hay Growers Association in

Minimizing Crop Damage Through Understanding Relationships Between Pyrethrum Phenology and Ray Blight Disease Severity

Creator:: Pethybridge, Sarah J., Gent, David H., Groom, Tim, and Hay, Frank S.
Abstract:: The most damaging foliar disease of pyrethrum in Australia is ray blight caused by Stagonosporopsis tanaceti. The probability of growers incurring economic losses caused by this disease has been substantially reduced by the implementation of a prophylactically applied spring fungicide program. This has been traditionally initiated when 50% of the...
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Full Text:: , Burnie, Tasmania 7320, Australia Abstract Pethybridge, S. J., Gent, D. H., Groom, T., and Hay, F. S

Spatiotemporal Characterization of Sclerotinia Crown Rot Epidemics in Pyrethrum

Creator:: Scott, Jason B., Gent, David H., Pethybridge, Sarah J., and Hay, Frank S.
Abstract:: Sclerotinia crown rot, caused by Sclerotinia minor and S. sclerotiorum, is a disease of pyrethrum in Australia that may cause substantial decline in plant density. The spatiotemporal characteristics of the disease were quantified in 14 fields during three growing seasons. Fitting the binary power law to disease incidence provided slope...
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Full Text:: , D. H., Pethybridge, S. J., and Hay, F. S. 2014. Spatiotemporal characterization of Sclerotinia crown

Estimation of Pyrethrum Flower Number Using Digital Imagery

Creator:: Scott, Jason B., Gent, David H., Hay, Frank S., and Pethybridge, Sarah J.
Abstract:: Flower number is the primary determinant of yield in pyrethrum (Tanacetum cineariifolium). Traditional estimates of flower numbers use physical harvesting of flowers, which is time consuming, destructive, and complicated. The precision of flower number estimates may be highly influenced by spatial heterogeneity of plant density and vigor. Here, we examined...
Resource Type:: Article
Full Text:: Using Digital Imagery Jason B. Scott1,4, David H. Gent2, Frank S. Hay3, and Sarah J. Pethybridge3

Effect of Feeding Selenium-Fertilized Alfalfa Hay on Performance of Weaned Beef Calves

Creator:: Hall, Jean A., Bobe, Gerd, Hunter, Janice K., Vorachek, William R., Stewart, Whitney C., Vanegas, Jorge A., Estill, Charles T., Mosher, Wayne D., and Pirelli, Gene J.
Abstract:: Selenium (Se) is an essential micronutrient in cattle, and Se-deficiency can affect morbidity and mortality. Calves may have greater Se requirements during periods of stress, such as during the transitional period between weaning and movement to a feedlot. Previously, we showed that feeding Se-fertilized forage increases whole-blood (WB) Se concentrations...
Resource Type:: Article
Full Text:: Alfalfa Hay on Performance of Weaned Beef Calves Jean A. Hall1*, Gerd Bobe2,3, Janice K. Hunter2¤a

Changes in Distribution and Frequency of Fungi Associated With a Foliar Disease Complex of Pyrethrum in Australia

Creator:: Hay, Frank S., Gent, David H., Pilkington, Stacey J., Pearce, Tamieka L., Scott, Jason B., and Pethybridge, Sarah J.
Abstract:: In Australia, pyrethrum (Tanacetum cinerariifolium) is affected by a foliar disease complex that can substantially reduce green leaf area and yield. Historically, the most important foliar disease of pyrethrum in Australia has been ray blight, caused by Stagonosporopsis tanaceti, and other fungi generally of minor importance. Temporal fluctuations in the...
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Full Text:: Fungi Associated With a Foliar Disease Complex of Pyrethrum in Australia Hay, F. S., Gent, D. H

Carpogenic germination of sclerotia of Sclerotinia minor and ascosporic infection of pyrethrum flowers

Creator:: O'Malley, Thomas B., Hay, Frank S., Scott, Jason B., Gent, David H., Shivas, Roger G., and Pethybridge, Sarah J.
Abstract:: Carpogenic germination of sclerotia and infection of flowers by ascospores of Sclerotinia minor is rare and seldom documented in most hosts. During 2007–2009, S. minor isolates were obtained from surface-sterilized pyrethrum flowers collected from fields in Australia. The isolation frequency of S. minor from flowers in 2007, 2008 and 2009...
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H. pylori virulence factor CagA increases intestinal cell proliferation by Wnt pathway activation in a transgenic zebrafish model

Creator:: Neal, James T., Peterson, Tracy S., Kent, Michael L., and Guillemin, Karen
Abstract:: Infection with Helicobacter pylori is a major risk factor for the development of gastric cancer, and infection with strains carrying the virulence factor CagA significantly increases this risk. To investigate the mechanisms by which CagA promotes carcinogenesis, we generated transgenic zebrafish expressing CagA ubiquitously or in the anterior intestine. Transgenic...
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Full Text:: H. pylori is linked to numerous gastric disorders including gastritis, peptic ulcer disease and

Na +/H + Antiport Is Essential for Yersinia pestis Virulence

Creator:: Minato, Yusuke, Ghosh, Amit, Faulkner, Wyatt J., Lind, Erin J., Schesser Bartra, Sara, Plano, Gregory V., Jarrett, Clayton O., Hinnebusch, B. Joseph, Winogrodzki, Judith, Dibrov, Pavel, and Hase, Claudia C.
Abstract:: Na⁺/H⁺ antiporters are ubiquitous membrane proteins that play a central role in the ion homeostasis of cells. In this study, we examined the possible role of Na⁺/H⁺ antiport in Yersinia pestis virulence and found that Y. pestis strains lacking the major Na⁺/H⁺ antiporters, NhaA and NhaB, are completely attenuated in...
Resource Type:: Article
Full Text:: Na�/H� Antiport Is Essential for Yersinia pestis Virulence

ScholarsArchive@OSU

Knapweed Hay as a Nutritional Supplement for Beef Cows Fed Low-Quality Forage

Making hay, the right way: Oregon farmers organize to market certified weed-free, premium hay

Minimizing Crop Damage Through Understanding Relationships Between Pyrethrum Phenology and Ray Blight Disease Severity

Spatiotemporal Characterization of Sclerotinia Crown Rot Epidemics in Pyrethrum

Estimation of Pyrethrum Flower Number Using Digital Imagery

Effect of Feeding Selenium-Fertilized Alfalfa Hay on Performance of Weaned Beef Calves

Changes in Distribution and Frequency of Fungi Associated With a Foliar Disease Complex of Pyrethrum in Australia

Carpogenic germination of sclerotia of Sclerotinia minor and ascosporic infection of pyrethrum flowers

H. pylori virulence factor CagA increases intestinal cell proliferation by Wnt pathway activation in a transgenic zebrafish model

Na +/H + Antiport Is Essential for Yersinia pestis Virulence

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