This study compares and evaluates wheat acreage responses among production systems in Oregon and Washington and between this region and estimated national average wheat acreage response. Oregon and Washington are disaggregated into five regions each on the basis of general similarity in soil, climate, substitute crops and production structures. Regional...
Published September 1979. 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
This study develops an econometric acreage response model for wheat in the Pacific Northwest (Oregon, Washington, and Idaho) and tests several alternative specifications of risk and their effects on wheat acreage response. Results indicate that the existence of a significant relationship between risk and wheat acreage response depends on the...
Parameters of an econometric acreage response function were estimated for barley in the Northwest using pooled time-series and cross sectional data. Barley acreage was found to be significantly affected by the price of barley, the price of wheat and wheat acreage (a proxy for the "cross-planting" substitution component of government...
Published May 1979. 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
Published May 1980. 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
This research analyzed the relationships of agricultural field burning policies, and other economic factors, with the quantity of land devoted to grass seed production in counties of the Willamette Valley, Oregon. The thesis describes the background of the grass seed industry, field burning and government policies concerning field burning in...
Whole tree excavation of 41 western juniper (Juniperus
occidentalis Hook.), ranging in age from 2 to 34 years old,
was used to assess the development and structure of root
systems, to determine biomass allocation patterns, and to
develop mathematical relationships for estimating biomass
and root system dimensions in seedling and...
Traditional readings of George Bernard Shaw's texts suggest that he is not a pure
Marxist socialist because of the spiritual and nationalist aspects of his vision. This thesis
attempts to confront Shaw's politics in order to demonstrate that he indeed offers a viable
socialist program. Overlaying his socialism with Louis...
The sampling theorem states that any frequency bandlimited signal can be exactly reconstructed from its sampled values. Different forms of this theorem have been reviewed since 1841 up to the present time. Kramer's generalized sampling theorem has been extended to two dimensions, and the form for higher dimensions can be...
Controversy regarding moral development research has given rise to a proliferation of theories competing for acceptance. For all these researchers, the work of Lawrence Kohlberg is the pivot point for comparisons, contrasts, and discussions. Still, no theories to date adequately describe and document a theoretically complete conception of moral judgment...
Studies towards the total synthesis of (+)-Phomactin A (1), D (6), and G (9), fungal metabolites with unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediates 354 and 356, which contain all of the carbon atoms of 1, 6 and 9....
The texture of processed berry fruits changes both during processing
and subsequent storage. A study was made of these changes
in processed strawberries, raspberries, blackberries, and blue-
berries, spin-cooked and stored at 100°F. for 28 days in tin and
glass containers. Four samples, from each of the two replications of...
Under adverse soil moisture conditions a critical water stress
or water potential develops in the plant and productivity is reduced,
or in extreme cases, terminated. Research to determine the soil
moisture status for maximum production of specific crops has been
conducted for decades. The results have done much to increase...
Plankton samples for this present study were collected from an
area off the southern Oregon coast, extending westward to about 83
kilometers offshore. Over this sampling area, 41 species of adult
copepods were identified, including representatives of 26 genera and
17 families. The total abundance averaged 550/m³.
Population densities of...
Chemical and biological evaluations were conducted to provide
chemical composition and digestibility information, in addition to
yield data, for silage corn varieties produced on poorly drained
Dayton soil series. Each variety was subjected to a Kjeldahl nitrogen,
acid detergent fiber, acid detergent lignin, cell wall, and
residual ash test. Subsequently...
In the present study, the textural changes induced in Chinese
waterchestnuts by physical and chemical means were of prime concern.
After being subjected to chemical and heat treatments, the
corms were analyzed to relate the chemical changes with the physical
changes in the corms.
Chinese waterchestnuts were peeled, filled in...
Processing and storage of berry fruits is accompanied by various changes, the important ones being the changes in the soluble solids content, titratable acidity, pH, pigments, and texture. A study was made of these changes in processed strawberries, raspberries, blackberries and blueberries, still cooked and stored at 78°F for one...
Failure to reconstitute completely is one of the major drawbacks of dehydrated green beans. Shrivelled and flaccid beans are found in almost every reconstituted lot.
In the present study an endeavour was made to locate the chemical factors responsible for the different rehydration charac -teristics of dehydrated green beans.
Dehydrated...
In this dissertation, I investigate the evolution and genomes of carabid beetles, a worldwide family of over 38,000 species. I focus on two species-rich groups, the tribes Chlaeniini and Bembidiini, both of which are primarily found on the shores of bodies of water. The former are distinctive for their defensive...
Large amounts of plant tissue are used in the production of many
canned, frozen and dried foods. Some of this material is unsatisfactory
in appearance and texture, despite careful processing from high quality
raw materials.
In the present study, the changes induced in soft fruits by controlled
heating and freezing...
Glyptholaspis americana (Berl.), G. confusa (Foa) and
deutonymphal Parasitus sp. were studied to determine the function
of the tritosternum. Studies were conducted on feeding, cleaning,
temperature and humidity sensitivity using intact individuals and
individuals whose tritosterna had been surgically removed.
The tritosternum was found to have two functions:
1) As...
The purpose of the study was to investigate the effect of trials-to-criterion on the retention of a discrete motor skill (overhand beanbag throw) by moderately mentally retarded and severely mentally retarded individuals. Nonmentally retarded individuals were involved as a control group. The subjects were grouped by degree of retardation and...
The ectomycorrhizal fungi Cenococcum geophilum, Hebeloma
crustuliniforme and Laccaria laccata produced ethylene in vitro in
modified Melin-Norkrans liquid medium only if amended with 2.5 to
10 mM methionine; Pisolithus tinctorius failed to produce ethylene
unless the cultures were renewed with fresh methionine-amended
medium prior to ethylene assay. An additional 19...
Fertilizer studies at the Oregon State University Vegetable
Research Farm were conducted for two years to evaluate the effect
of different nutrient sources on yield and selected quality components.
Sources of nutrients included sewage sludge, fresh and dried poultry
manure, a soybean residue from oil extraction, and several mineral
fertilizers....
Seed of Cougar and Newport Kentucky bluegrass (Poa pratensis L.)
was harvested at Pullman and Spokane at several stages of maturity.
Variations in seed attributes resulting from environmental and maturity
effects were evaluated through germination tests, tetrazolium staining,
seed moisture and seed weight determinations. Seedling vigor was
determined by .speed...
The peppermint industry is the largest commercial herb industry
in the United States. Oregon is the largest peppermint producing
state with nearly 60 percent of the total United States peppermint
oil production. There is a need for economic information about current
and future prospects for the national peppermint industry as...
Research was conducted at the Starkey Experimental Forest and
Range in northeastern Oregon to determine cattle performance, diet
quality, botanical composition of forage ingested, and production
and utilization among rest-rotation, season-long, and deferred
rotation grazing systems. The grazing season lasted from June 20 to
October 10 of each year. Cows...
This thesis is concerned with riverfront land use in Albany,
Oregon, and is addressed to the possibility of orderly development
and redevelopment of the riverfront. It appraises the present situation
particularly in regard to the renewal cycle and the problem of
floods on the river borders. Finally this thesis provides...
The application of modern land management practices beginning at the turn of the 20th century is widely believed to have dramatically transformed forest landscapes of the inland Pacific Northwest. Restoring historical conditions to make forests resilient to future climate and disturbance regimes is a major goal of federal forest managers....
The aim of this study was to investigate the vitamin B-6 status of Saudi adult males and compare the status between rural and urban subjects. Fifty-one adult male subjects were recruited from urban (n=31) and rural (n=20) populations of Riyadh. These subjects were reclassified to cigarette smokers (n=19), water pipe...
Published July 1975. 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
It has been reported that cyanide inactivates the succinate dehydrogenase activity of HMP toward cytochrome c, oxygen, methylene blue and DCIP. In the present study, it was found that cyanide
also solubilizes the SDH from HMP, this is reflected by the extent
of solubilization of acid nonextractable flavin in the...
Crested wheatgrass (Agropyron cristatum (L.) Gaertn.) is a nonindigenous perennial grass that was introduced to North America to improve the condition of degraded rangelands. It has proven to be a successful revegetation species due to its superior ease of establishment, strong competitive ability, and ability to tolerate grazing. However, crested...
Renewable energy sources are becoming increasingly important due to their low environmental impact and limitless nature. This thesis explores the design of a 250 mW permanent magnet linear generator wave energy converter to power ocean sensors. While many wave energy converters exist, this is a unique application because the wave...
Leafhoppers (Homoptera: Cicadellidae) were surveyed in Western Oregon vineyards in 1999. Four sites were sampled for leafhoppers using a sticky trap method, and 29 vineyards were sampled for leafhoppers using a sweep net method in the summer of 1999. The sticky trap and sweep net methods were chosen based on...
I assessed potential barriers to dispersal using homing tendency and investigated the movements and settlement site selection of pygmy rabbits (Brachylagus idahoensis) after short distance translocations in southeastern Oregon from June – December 2008. I captured, radio marked, and translocated 59 pygmy rabbits 1-2 km across landscapes with (1) continuous...
Successful ecosystem restoration requires an understanding of the ecological processes directing succession. One of the challenges in the semi-arid grasslands of western United States is replacement of native species by invasive annual grasses. Solutions to this problem require identifying and manipulating ecological processes that direct succession to favor desired vegetation....
The Pacific Northwest is at risk for significant seismic and tsunami events, which are capable of severely damaging lifeline transportation infrastructure, particularly bridges. As the bridges in the United States age and begin to show signs of fatigue, the risk for severe damage increases. Proper monitoring and inspection of bridges...