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
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 was initiated in its original form in 1982 with the Yamhill Soil and Water Conservation District and the McMinnville Field Office of the USDA-Soil Conservation Service. The Soils Department, Oregon State University, was one of several cooperators, in part funded by The Wine Advisory Board.
In 1984 and...
This study was undertaken to increase knowledge of opal phytoliths
in plants and soils of Oregon, and thus encourage further use of
phytoliths in future pedologic investigations.
Content of plant opal in needles from ten common Oregon conifer
species ranged from 0.2 to 7.9%. Western larch (Larix occidentalis)
contained the...
Copper deficiency and Mo-induced Cu deficiency are nutrition
problems of ruminant livestock in the Burns and Klamath Falls area
of Oregon. Chemical analysis of plant and soil samples was used to
survey Cu and Mo levels in forage in these areas. The objectives
were to assess the possibility of animal...
Field studies designed to study residual effects from fertilizer
molybdenum were initiated in September 1971 on established grass-clover
pastures at ten sites in Western Oregon. Treatments were 0.0
and 1.12 kg molybdenum /ha on plots receiving 0-35-0-20S fertilizer (elemental sulfur-S) and 0.0, 0.56, 1.12 and 2.24 kg molybdenum /ha on...
Temperature and water potential effects on the growth,
transpiration, total nonstructural carbohydrate (TNC) content, and
nutrient uptake of sudangrass (Sorghum vulgare var. piper) were
investigated in laboratory experiments. The effect of nitrogen supply
on the growth and nutrient uptake at constant soil water potential was
also investigated in this study....
Extractable forms of Al and Fe were studied in five soils from
the Coast Range, and in two soils from the Willamette Valley in
Oregon.
Exchangeable Al was determined in a way which permitted a
comparison of three different methods for its determination. Values
for exchangeable Al obtained by the...
Nitrogen is one of the most important nutrients influencing
potato yields. The potential for environmental pollution from N is
also greater than for other nutrients added as fertilizer because
excessive amounts applied are subject to leaching into drainage water.
The purpose of this study was to improve N fertilizer recommendations...