Studies were conducted to determine the competitive ability of
medusahead, Taeniatherum asperum (Sim.), for nitrogen when grown in
association with perennial range grass species. The method used to
determine this competitive ability was to compare the dry weight,
percent nitrogen, and total nitrogen of medusahead and perennial
wheatgrass species growing...
This study has been concerned with the patterns of vegetative changes which occur during the first five years following logging and burning on Douglas-fir clear cuts. Knowledge of the successional sequence in the coastal forests of western Oregon is of primary importance to those concerned with the management of this...
The economic efficiency related to the use of the range resource
is extremely important to an area such as Southeastern Oregon where
most of the gross income of the area is obtained from range livestock
production; important to the economic progress of the region and to
the development of a...
If informed and rational judgments are to be made concerning
proposed large scale interbasin water diversions, it is imperative
that competent positive analysis be undertaken by scientists of relevant
disciplines. It is the primary purpose of this thesis to pull together
into a single interrelated package, the economic theory needed...
The free fatty acids of milk fat are believed to be involved in
imparting flavor properties to milk and other dairy products. In the
past the free fatty acids have largely been related to quality deterioration
and hence the methods for measurement have been devised to
determine the changes in...
A biosystematic investigation was undertaken in 15
species and three subspecies of the genus Aster, in western
North America. Previous studies had been based entirely on
external morphological features, and it was believed that
much could be learned about the natural affinities of the
taxa by exploring their cytological and...
The purposes of this investigation are twofold: (1) to identify the functions necessary for an adequate student personnel program in the two-year community college and (2) to develop guidelines based on the functions identified. Securing And Treating Of Data: The data for this study were obtained by using a questionnaire...
Eola rasp leaf of cherry was first described by Milbrath and
Reynolds in Oregon in 1961. Dr. Cadman of the Scottish Horticultural
Research Institute suggested that this disease was incited by a strain
of tomato ringspot virus (TomRSV), but since then controversial results
with some isolates of EoIa rasp leaf...