The purpose of this study was to examine the effects of the
Douglas-fir tussock moth, spray control program and salvage operations
have had on outdoor recreationists in the Blue Mountains
in northeastern Oregon during the 1972-1974 outbreak.
Eight hundred ninety-four parties were interviewed one year
after the outbreak in four...
The degree to which camping is related to selected characteristics of river terraces along the Rogue Waterway, Oregon has been analyzed. Previous attempts to formulate models relating campsite choice to characteristics of the natural environment focused on camping parties engaged in auto-camping and the aggregate population behavior rather than on...
Concern over the need to provide open space in communities
for recreation and other uses and to estimate the public values
involved is apparent to regional planners. This need, particularly
evident in natural resource planning, indicates that more sophisticated
analytical techniques be developed.
The primary thrust of this study is...
Pastures consisting of mixtures of subclover (Trifolium
subterraneum) and grasses have responded to sulfur fertilization
on many sites in Douglas County, Oregon. The objectives of this
study were to examine specific changes in forage quality which occur
as sulfur is applied in excess of the amount required for maximum
yield...
Published August 1979. Reviewed September 2011. 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
The oxygen concentration in a stream is an important
parameter of water quality. Changes in oxygen concentrations
can affect various stream organisms including fish.
Foresters have become concerned with predicting the impacts
of forest activities on oxygen levels in streams. Slash,
which accumulates in streams as a result of harvesting...
The effect of nitrogen (N) application on seed yield of Limnanthes
alba was studied for two years at two locations. Seeding following alfalfa
(Medicago sativa L.) was compared to establishment after wheat
(Triticum aestivum L.). Treatments used were a control (no N applied),
and two rates of N (50 and...
Testes size as an indicator of future growth was examined
in a total of 45 bull calves from spring calves born in 1978
and 1979. Scrotal circumference measurements were used as the
physical indicator of testicle size in the live animal.
Growth traits studied were preweaning average daily gain,
weaning...