Index Catalog // ScholarsArchive@OSU

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Creator:: Butler, J. Hugh B.
Abstract:: The herbicide rate required to reduce growth by 50% (GR₅₀) of 11 cultivars of red fesue (Festuca rubra L. and F. rubra ssp. commutata) and for four cultivars of bentgrass (Agrostis tenuis Sibth. and A. stolonifera L. var. palustris) to sethoxydim (2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) was determined in greenhouse and laboratory experiments....
Resource Type:: Dissertation
Full Text:: /ha, 15 kg/ha, and 5.3 mM, respectively. Penncross bentgrass was 400, 1400, and 12,900 times more

Modeling the temperature-mediated phenological development of alfalfa (Medicago sativa L.)

Creator:: Ben-Younes, Mongi, 1953-
Resource Type:: Dissertation
Full Text:: Doctor of Philosophy in Crop Science presented on January 15, 1992. Title: Modeling the Temperature

Physiological and yield responses of meadowfoam to water stress and nitrogen fertilization

Creator:: Pearson, Calvin H.
Resource Type:: Dissertation
Full Text:: the days of field measurements during 1981 and 1982. 4. The range of the diurnal cycle for plant

Seed Development in Orchardgrass (Dactylis glomerata L.) in Relation to Plant Growth Regulators and Spring Nitrogen

Creator:: Morad, Mohammed M.
Abstract:: Orchardgrass (Dactylis glomerata L.) is an important seed crop, but unlike other cool-season perennial grass seed crops such as perennial ryegrass (Lolium perenne L.) and tall fescue [Schedonorus arundinaceus (Schreb.) Dumort.], seed yields have not increased over time so there is considerable room for improvement. Research suggests that plant growth...
Resource Type:: Dissertation
Full Text:: . Morad for the degree of Doctor of Philosophy in Crop Science presented on June 15, 2021. Title

Monitoring potato leafroll virus movement in differentially aged potato (Solanum tubersom L.) plants with an immunosorbent direct tissue blotting assay

Creator:: Whitworth, Jonathan L.
Abstract:: Potato leafroll virus (PLRV) causes yield and quality losses in potato. PLRV is identified by plant symptoms and serological tests such as an enzyme-linked immunosorbent assay (ELISA). A similar serological test, direct tissue blotting assay (DTBA), was used to detect and monitor PLRV movement in field-inoculated Russet Burbank plants and...
Resource Type:: Dissertation
Full Text:: reported dates for the onset of mature plant resistance to PVY (strain PVY") range from mid-July to August

Optimizing virus detection in potato breeding populations

Creator:: Hane, Dan C.
Abstract:: Virus contamination in a potato breeding program can seriously disrupt the variety development process. Experiments were conducted from 1989 through 1993 to: evaluate the extent to which Potato Leafroll Virus (PLRV) and Potato Virus Y (PVY) can invade a breeding program, determine viral spread within hills and within individual tubers,...
Resource Type:: Dissertation
Full Text:: when plants were between 7.5 and 15 cm in height. The infected plant was handled first followed by a

Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

Creator:: Eardly, Bertrand D.
Abstract:: Nitrogen fertilization of seedling legumes is a controversial practice intended to provide N to the plant during periods when seed N, soil N, and N₂ fixation may not meet plant requirements; eg. prenodulation, postharvest, or in the event of an inoculation failure. Field experiments were conducted in 3 consecutive years...
Resource Type:: Dissertation
Full Text:: plant tube effectiveness tests of field isolates obtained in 1982 (Hyslop field 4, range 12). Nodules

Growth and development of spring grain species as affected by planting date

Creator:: Armah-Agyeman, Grace
Abstract:: Changes in the federal farm program, in rainfall pattern and quantity, and increased incidence of herbicide resistant weeds and diseases have generated increased interest in spring grains in the Pacific Northwest. However, spring grains have traditionally been treated as minor crops in this region, thus little research has been done...
Resource Type:: Dissertation
Full Text:: the plant ceases to grow. The optimum temperature may be defined as the temperature or range of

Breeding qualitative and quantitative traits for potatoes in the Columbia Basin

Creator:: Graebner, Ryan C.
Abstract:: The cultivated potato (Solanum tuberosum L.) is one of the world’s most important staple crops, ranked fourth after maize, rice, and wheat. While the potato’s success is due largely to its high yield, it also benefits from its broad global acceptance, and its ability to be used by the consumer...
Resource Type:: Dissertation
Full Text:: ........................ 15 2.1 Abstract

Whole farm case studies : a how-to guide

Creator:: Murray, Helene
Abstract:: Calls for increased farmer involvement in research and extension programs have been numerous and well supported. One approach to integrate the collective knowledge and experience of agricultural scientists and farmers is through whole farm case studies (WFCS). An interdisciplinary team of 34 research and extension personnel at Oregon and Washington...
Resource Type:: Dissertation
Full Text:: of Expertise 12 Coordination 13 Team Size 13 Team Building 14 Designing the Study 15 Identifying

ScholarsArchive@OSU

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Modeling the temperature-mediated phenological development of alfalfa (Medicago sativa L.)

Physiological and yield responses of meadowfoam to water stress and nitrogen fertilization

Seed Development in Orchardgrass (Dactylis glomerata L.) in Relation to Plant Growth Regulators and Spring Nitrogen

Monitoring potato leafroll virus movement in differentially aged potato (Solanum tubersom L.) plants with an immunosorbent direct tissue blotting assay

Optimizing virus detection in potato breeding populations

Nitrogen nutrition of seedling alfalfa (Medicago sativa L.)

Growth and development of spring grain species as affected by planting date

Breeding qualitative and quantitative traits for potatoes in the Columbia Basin

Whole farm case studies : a how-to guide

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