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Fallow water retention and wheat growth as affected by tillage method and surface soil compaction

Creator:: Schillinger, William F.
Abstract:: No-tillage winter wheat (Triticum aestivum L.) grown in a wheat-fallow cropping system has consistently produced lower grain yields than conventionally tilled soils in the semiarid Pacific Northwest. A 2-year study was conducted in a long-term tillage trial at Moro, OR to determine factors responsible for differences in wheat growth and...
Resource Type:: Dissertation
Full Text:: express my sincere gratitude to Dr. Floyd E. Bolton for his guidance, encouragement, support, and

Occupational information pertinent to the training of counselors

Creator:: Hatch, Raymond N. (Raymond Norris)
Resource Type:: Dissertation

An ecological analysis of adolescent females' perseptions of sex : implications for onset of sexual intercourse

Creator:: Rink, Elizabeth
Abstract:: This study explores the intrapersonal and interpersonal ecological factors that influence adolescent females' perceptions of sex and the extent to which their perceptions of sex impact onset of sexual intercourse as they mature. Particular attention is given to how depression influences individual, personal and social factors in an adolescent female's...
Resource Type:: Dissertation

Field sampling and mapping strategies for balancing nitrogen to variable soil water across landscapes

Creator:: Roberts, Michael C. (Michael Coy), 1951-
Resource Type:: Dissertation
Full Text:: thesis. I would like to thank Dr. Floyd E. Bolton for support and assistance with this thesis. ii

The effect of precipitation variation on soil moisture, soil nitrogen, nitrogen response and winter wheat yields in eastern Oregon

Creator:: Glenn, D. M. (David Michael)
Abstract:: The semi-arid regions of the Pacific Northwest are characterized by a high degree of annual temperature and precipitation variation. As a result of this climatic variation, dryland nitrogen fertilizer trials on fallow- ,wheat rotations typically demonstrate a variable response. Wheat growers in the area must not only cope with this...
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGMENTS I would like to express my sincere appreciation to Dr. Floyd E. Bolton for his guidance

Involvement of formaldehyde in depressed iron absorption in mink and rats fed Pacific hake (Merluccius productus)

Creator:: Costley, Gary Edward
Abstract:: Inclusion of substantial levels of raw-frozen Pacific hake (Merluccius productus) in diets of ranch-raised mink (Mustela vison) causes a large percentage of animals to develop an abnormal condition termed "cotton fur" (CF), characterized by depressed body weight, microcytic-hypochromic anemia and a failure of under-fur pigmentation. Observations by several groups of...
Resource Type:: Dissertation
Full Text:: PACIFIC HAKE (MERLUCCIUS PRODUCTUS) Redacted for PrivacyAbstract approved: Dr Floyd M. St6ut Inclusion

Response of wheat (Triticum aestivum L.) cultivars and downy brome (Bromus tectorum L.) to metribuzin and ethyl metribuzin

Creator:: Munir, Muhammad
Abstract:: Downy brome (Bromus tectorum. L.), a serious grass weed in eastern Oregon can be partially controlled in wheat by metribuzin [4-amino-6-tertbutyl- 3-(methylthio)-as triazin -5(4H)-one]. However, cultivars of many crops Lave been reported to differ in their level of tolerance to metribuzin. This lack of tolerance has led to the investigation...
Resource Type:: Dissertation
Full Text:: Ethyl metribuzin. Redacted for Privacy Abstract approved : Dr. Floyd E. Bolton Downy brome (Bromus

Effect of nitrogen and water stresses during tillering and grain- filling in wheat

Creator:: Ashraf, Muhammad, 1952-
Abstract:: The CERES-Wheat Crop Growth and Development model treats temperature, nitrogen and water stresses as limiting factors. For each day the model calculates a stress index for temperature, N and water, compares the magnitude of the indices, and then adjusts the calculated daily potential growth using the index of the most...
Resource Type:: Dissertation
Full Text:: would like to express my sincere gratitude to Dr. Floyd E. Bolton for his guidance, encouragements

College preparation for teaching manipulative activities in the elementary school

Creator:: Fagan, Raymond Edward Benedict
Resource Type:: Dissertation
Full Text:: *ssist*nee rendered by Dr. Floyd . Albin In m*kng the pre1imiiry etudy on the oampus 01' Oregoi Co1Iee

Personality characteristics of selected community college dropouts

Creator:: Edelbrock, Gary Ray
Abstract:: The Purpose of the Study The central purpose of this study was to determine if certain personality characteristics differ between community college persisters and those who drop out of school. The following 12 a priori hypotheses involving six Adjective Check List personality scales were tested: 1. Male persisters would have...
Resource Type:: Dissertation
Full Text:: DROPOUTS Abstract approved: Redacted for Privacy Raymond S. Sanders The Purpose of the Study The central

ScholarsArchive@OSU

Fallow water retention and wheat growth as affected by tillage method and surface soil compaction

Occupational information pertinent to the training of counselors

An ecological analysis of adolescent females' perseptions of sex : implications for onset of sexual intercourse

Field sampling and mapping strategies for balancing nitrogen to variable soil water across landscapes

The effect of precipitation variation on soil moisture, soil nitrogen, nitrogen response and winter wheat yields in eastern Oregon

Involvement of formaldehyde in depressed iron absorption in mink and rats fed Pacific hake (Merluccius productus)

Response of wheat (Triticum aestivum L.) cultivars and downy brome (Bromus tectorum L.) to metribuzin and ethyl metribuzin

Effect of nitrogen and water stresses during tillering and grain- filling in wheat

College preparation for teaching manipulative activities in the elementary school

Personality characteristics of selected community college dropouts

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