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Propionate metabolism and its relationship to leghemoglobin biosynthesis in soybean nodules

Creator:: Jackson, Earl Kenneth
Abstract:: Experiments are reported which demonstrate that a cobalt deficiency in R. meliloti results in a decreased cytochrome content of bacterial cells. It is concluded that the effect of cobalt deficiency on cytochrome content of Rhizobium cells and on the leghemoglobin content of nodules possibly may be explained by an effect...
Resource Type:: Dissertation
Full Text:: . Harold J. Evans for suggesting the problem, for helpful advice, and for constructive criticism during

Oregon 4-H forage teaching series

Creator:: Oregon State University. Extension Service, Youngberg, Harold, Vough, Les, Johnson, Duane, Johnston, La Rae Dennis, and Lawson, Richard
Abstract:: This series of leader guides is designed to help provide experiences related to forage quality for youth and their families. The individual sheets may be duplicated for distribution to members.
Resource Type:: Learning Object
Full Text:: i Oregon 4-H ^r^ yj^ Forage Teaching Series This series

4-H plant & seed identification & crop judging: leader guide

Creator:: Youngberg, Harold, Hannaway, David, Mosley, Al, Karow, Russell S., Jeffreys, Bradford J., and Oregon State University. Extension Service
Abstract:: Revised July 1989. Reprinted July 1988. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Learning Object
Full Text:: Reasons 18 4-H Activities 19 Contests 19 Demonstrations 19 Programs 19 Prepared by Harold

Today's youth in tomorrow's sea : from a speech by Harold A. Goodwin, Deputy Director, National Sea Grant Program

Creator:: Oregon State University. Extension Service/Sea Grant Marine Advisory Program and Goodwin, Harold L.
Abstract:: This copy has proofreaders' marks.
Resource Type:: Technical Report
Full Text:: , 7 pp. 35c Your Future in Oceanography, Norman H. Gaver, Richard Rosen Press, New York, 1967. 143

Interrelationships of Meloidogyne hapla Chitwood, 1949 with Heterodera schachtii Schmidt, 1871 on Beta vulgaris L.

Creator:: Jatala, Parviz
Abstract:: Self-interactions (effects of reinoculation with the same nematode) in Meloidogyne hapla and Heterodera schachtii on Beta vulpris at different levels of inocula with various population combinations were studied. In M. hapla, the only significant increase of galls was noted in treatments when 250+250 larvae were inoculated at 10-day intervals. Longevity...
Resource Type:: Dissertation
Full Text:: . Abstract approved: Redacted for privacy Dr. Harold J. Jensen Self-interactions (effects of reinoculation

Resurgent Uplift of Samosir Island in Toba Caldera, Indonesia : Insights from Lake Sediment Paleomagnetism and C-14 Age Determination

Creator:: Solada, Katharine
Abstract:: Around 74 ka, a supervolcano, Toba Caldera in Sumatra, Indonesia erupted, producing the Youngest Toba Tuff and its associated caldera. After this catastrophic eruption, a lake filled the caldera, sedimentation within the lake occurred, and the process known as resurgence began. Today, the resurgent dome, Samosir Island, is uplifted 700...
Resource Type:: Masters Thesis
Full Text:: 38TUGeologyU 38Tpresented on38T UMay 9, 2018. Title: UResurgent Uplift of Samosir Island in Toba Caldera

Bionomics of the hop cyst nematode, Heterodera humuli Filipjev, 1934 (Nematoda : Heteroderidae)

Creator:: Sen, Arun Kumar
Abstract:: The hop cyst nematode, Heterodera humuli Filipjev, 1934 was first reported from Europe in 1894, however, very little is known with respect to the biology and economic importance of this pest. Abundant material from Oregon hop yards provided an excellent opportunity to add additional details concerning the bionomics of this...
Resource Type:: Dissertation
Full Text:: ) Abstract approved: Dr. Harold J. Jensen The hop cyst nematode, Heterodera humuli Filipjev, 1934 was

Measurement of nitrogenase activity of intact legume symbionts in situ using the acetylene reduction assay

Creator:: Fishbeck, Kathleen Ann
Abstract:: The process of biological nitrogen fixation involves the enzymic reduction of atmospheric nitrogen (N₂) to ammonia (NH₃). The enzyme which catalyzes this reduction, nitrogenase, does not exhibit a high degree of substrate specificity. It also catalyzes the reduction of acetylene (C₂2H₂) to ethylene (C₂H₄). The reduction of C₂H₂ to C₂H₄...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENTS I would like to express sincere appreciation to Dr. Harold J. Evans for his guidance and

The biology and pathogenicity of a sheath nematode Hemicycliophora similis Thorne, 1955

Creator:: McKewan, Jeanette Anne
Abstract:: A study, using greenhouse and laboratory experiments, was made of Hemicycliophora similis from Bandon, Oregon to determine: identity and morphometrics, time and development of a life cycle, host plant preferences and optimum environmental conditions for reproduction and pathogenicity. Morphometric investigations revealed discrepancies between the measurements of this nematode species and...
Resource Type:: Masters Thesis
Full Text:: species and those recorded in nematological literature for H. similis. Personal communications with R. P

Effect of lot size on lot uniformity in Lolium spp. seed

Creator:: Cook, Ronald Lawrence
Abstract:: Studies were conducted to determine the uniformity of three commercial seed lots of ryegrass (Lolium spp.) and the effects of lot size on lot uniformity. Individual bag-samples were taken from each seed lot. Factors considered were percentage purity, annual ryegrass, perennial ryegrass, weed, other crop, inert matter, and germination. Number...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: /7 Harold W. Youngbeig Studies were conducted to determine the uniformity of three

ScholarsArchive@OSU

Propionate metabolism and its relationship to leghemoglobin biosynthesis in soybean nodules

Oregon 4-H forage teaching series

4-H plant & seed identification & crop judging: leader guide

Today's youth in tomorrow's sea : from a speech by Harold A. Goodwin, Deputy Director, National Sea Grant Program

Interrelationships of Meloidogyne hapla Chitwood, 1949 with Heterodera schachtii Schmidt, 1871 on Beta vulgaris L.

Resurgent Uplift of Samosir Island in Toba Caldera, Indonesia : Insights from Lake Sediment Paleomagnetism and C-14 Age Determination

Bionomics of the hop cyst nematode, Heterodera humuli Filipjev, 1934 (Nematoda : Heteroderidae)

Measurement of nitrogenase activity of intact legume symbionts in situ using the acetylene reduction assay

The biology and pathogenicity of a sheath nematode Hemicycliophora similis Thorne, 1955

Effect of lot size on lot uniformity in Lolium spp. seed

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