The objectives of this study were to evaluate and compare the
availability of native and applied P in Central Oregon pumice soils
with that in Willamette valley soils and calcareous soils from Eastern
Oregon. The experimental work to meet these objectives included
laboratory and greenhouse studies.
The removal of P...
Published April 1963. 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
An investigation of the effects of temperature and of zinc on
development of tobacco mosaic virus (TMV) in resistant and susceptible
varieties of tomatoes was conducted under greenhouse conditions.
The study included two experiments, one run during late winter and
early spring, and the other during late spring and summer,...
Initial
establishment
of
legume
forage
crops
is
of
prime
importance
in
determining
future
forage
and
seed
production.
The
objective
of
this
study
was
to
determine
the
influence
of
herbicides,
phosphorus
fertilization,
and
seedbed
preparation
on
the
establishment
of
alfalfa
and
birdsfoot
trefoil.
Experiments
were
designed
to
study
the
influence
of...
A field experiment was conducted to study the influence of cutting
treatments on the yield and quality of non-irrigated alfalfa in
western Oregon.
Spring clipping treatments included (1) not clipped, (2) clipped
when 6 inches high and (3) clipped when 12 inches high. The hay harvest
criteria were (1) near...
The central purpose of this comparison was to determine the
congruence or difference between two teaching techniques, the television
method and the conventional lecture method as used in teaching
General Hygiene on the freshman college level at Oregon State University.
Sub-problems associated with this study were, (a) the development
of...
Arctostaphylos viscida Parry and A. canescens Eastw.,
two well-known and frequently encountered manzanitas in the
Siskiyou Mountains in southwestern Oregon, are shown to
hybridize and to produce an extensive series of morphological
intermediates. The hybridization occurs wherever populations
of these two species meet at contact zones of
serpentine and non-serpentine...