An exotic pest of deciduous plants, Operophtera
brumata (L.), was discovered in Portland, Oregon in
1978. O. brumata, the winter moth, is native to
northern Africa and temperate Eurasia. Its range
extends from Scandanavia, Britain, and France to Japan.
It is also now well established on the North American
continent...
The major objective of this study was to determine why certain
winter wheat cultivars, when hybridized, will produce a greater proportion
of desirable plants in subsequent, segregating generations.
Three winter wheat parents were chosen as the experimental material,
based on their known performance as parents. Yamhill and
Pullman Selection 101...
Carter Lake, a freshwater, coastal dune-margin lake,
was sampled at the beginning and end of the summer of 1986
to determine the sediment characteristics and benthic
macroinvertebrate abundance, biomass, variety, and
diversity. The distributions of major benthic habitats were
estimated by snorkeling in June and July, 1986. Water
temperature and...
The abundance and low fat content of Pacific whiting
support Its use for the production of surimi. The
degradation of muscle proteins by myxosporidian secreted
proteinase(s) has been associated with its soft texture.
High residual activity is retained through the washing
process used in the production of surimi and precludes...
Hard Fescue (Festuca longifolia Thuill.) has potential for in
creased turf use but does not respond well to normal seed production
management practices in Oregon. Field burning (the normal residue
management practice) results in reduced seed yields in commercial hard
fescue seed production fields but stimulates seed production in Chewings...
Acremonium coenophialum is an endophytic fungus which infects
the reproductive and vegetative tissue of tall fescue. Interest in
this fungus was sparked by research which linked its presence in
tall fescue with reduced weight gains and alkaloid-like poisoning
in cattle. Incomplete information was available on the endophyte's
life or disease...
Governments have employed special capital gains taxes to curb speculation in real estate and raise public revenue. Economic theory suggests that the introduction of a gains tax with a declining rate structure over time will induce prospective buyers to reduce their demand for land and will induce sellers to offer...