Index Catalog // ScholarsArchive@OSU

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:: Gordon, Tyler C.
Abstract:: Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ William F. Pfender Stem rust, caused by the fungus Puccinia graminis subsp. graminicola

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Creator:: Peetz, Amy B.
Abstract:: Podosphaera macularis causes one of the most important diseases, powdery mildew, of Humulus lupulus (hop). If left unmanaged, hop powdery mildew can cause total crop loss due to disease or browning of hop cones rendering the cones unmarketable to buyers. The Hop Powdery Mildew Infection Risk Index (HOPS) is heavily...
Resource Type:: Masters Thesis
Full Text:: Powdery Mildew. Abstract approved: Walter F. Mahaffee

Plant growth regulators and shattering control in cool-season perennial grasses

Creator:: Lee, Suk-Kyun
Abstract:: Shattering is a natural phenomenon of floret and spikelet disarticulation across abscission layers of the pedicel and rachilla, respectively, after seed maturation. Seed shattering in cool-season grasses and native grass species is an economic problem in seed production. This study was conducted to determine whether the use of the plant...
Resource Type:: Masters Thesis

Captain Sol. Tetherow, wagon train master : personal narrative of his son, Sam. Tetherow, who crossed the plains to Oregon, in 1845, and personal narrative of Jack McNemee, who was born in Portland, Oregon, in 1848, and whose father built the fourth house in Portland

Creator:: Lockley, Fred, 1871-
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: , Charles M. Johnson, James W. Johnson, John Foster, John F. Johnson, Finess Walker, William Monroe

To Oregon by ox-team in 1847 : the story of the coming of the Hunt family to the Oregon country and the experiences of G. W. Hunt in the gold diggings of California in 1849

Creator:: Lockley, Fred, 1871- and Hunt, Jeptha T., 1862-
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII F 881 .1 6 12 0143077226 c•-. ,:-.... :, ,..,,...__;; qo Oregon by Qx .... Team In

Infection of Brachypodium distachyon by Formae Speciales of Puccinia graminis: Early Infection Events and Host-Pathogen Incompatibility

Creator:: Figueroa, Melania, Alderman, Stephen, Garvin, David F., and Pfender, William F.
Abstract:: Puccinia graminis causes stem rust, a serious disease of cereals and forage grasses. Important formae speciales of P. graminis and their typical hosts are P. graminis f. sp. tritici (Pg-tr) in wheat and barley, P. graminis f. sp. lolii (Pg-lo) in perennial ryegrass and tall fescue, and P. graminis f....
Resource Type:: Article
Full Text:: , Stephen Alderman1, David F. Garvin2, William F. Pfender1,3* 1 Forage Seed and Cereal Research Unit

The Use and Role of Predictive Systems in Disease Management

Creator:: Gent, David H., Mahaffee, Walter F., McRoberts, Neil, and Pfender, William F.
Abstract:: Disease predictive systems are intended to be management aids. With a few exceptions, these systems typically do not have direct sustained use by growers. Rather, their impact is mostly pedagogic and indirect, improving recommendations from farm advisers and shaping management concepts. The degree to which a system is consulted depends...
Resource Type:: Article
Full Text:: . Gent,1,3,∗ Walter F. Mahaffee,2,3 Neil McRoberts,4 and William F. Pfender1,3 1U.S. Department of

The Columbia basin irrigation project. A report by Columbia basin survey commission, state of Washington, 1920

Creator:: Washington (State). Columbia Basin Survey Commission and Chase, Marvin
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: the Project F. Pow POSSIEILITIES 1 At Drops on the Project 2 On Flathead and Clarks Fork Rivers G

PRex: an experiment to investigate detection of near-field particulate deposition from a simulated underground nuclear weapons test vent

Creator:: Keillor, Martin E., Arrigo, Leah M., Baciak, James E., Chipman, Veraun, Detwiler, Rebecca S., Emer, Dudley F., Kernan, Warnick J., Kirkham, Randy R., MacDougall, Matthew R., Milbrath, Brian D., Rishel, Jeremy P., Seifert, Allen, Seifert, Carolyn E., and Smart, John E.
Abstract:: A radioactive particulate release experiment to produce a near-field ground deposition representative of small-scale venting from an underground nuclear test was conducted to gather data in support of treaty capability development activities. For this experiment, aCO₂‐driven “air cannon” was used to inject ¹⁴⁰La, a radioisotope of lanthanum with 1.7‐d half-life...
Resource Type:: Article

The Odell Skipper ; Vol. 1 No. 10 (1934 Aug. 8)

Creator:: Civilian Conservation Corps (U.S.). Camp F-96 (Odell Lake, Or.)
Abstract:: Gerald W. Williams Collection
Resource Type:: Book

ScholarsArchive@OSU

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Plant growth regulators and shattering control in cool-season perennial grasses

Captain Sol. Tetherow, wagon train master : personal narrative of his son, Sam. Tetherow, who crossed the plains to Oregon, in 1845, and personal narrative of Jack McNemee, who was born in Portland, Oregon, in 1848, and whose father built the fourth house in Portland

To Oregon by ox-team in 1847 : the story of the coming of the Hunt family to the Oregon country and the experiences of G. W. Hunt in the gold diggings of California in 1849

Infection of Brachypodium distachyon by Formae Speciales of Puccinia graminis: Early Infection Events and Host-Pathogen Incompatibility

The Use and Role of Predictive Systems in Disease Management

The Columbia basin irrigation project. A report by Columbia basin survey commission, state of Washington, 1920

PRex: an experiment to investigate detection of near-field particulate deposition from a simulated underground nuclear weapons test vent

The Odell Skipper ; Vol. 1 No. 10 (1934 Aug. 8)

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Conference Section/Track

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Funding Body

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search