Oregon's commercial fishery for albacore tuna (Thunnus alalunga)
is large, valuable, and variable. Little is known, however, about the
oceanographic factors which determine abundance and distribution of
albacore.
Primarily using logbook data contributed by fishermen, this study
compares albacore catches with selected ocean conditions. The study
is limited to troll-caught...
Published June 1978. 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 purpose of this study was to evaluate differences between winter wheat varieties in response to nitrogen fertilizer. Seven nitrogen fertilizer rate x variety factorial experiments were conducted in several environments. Dry matter and nitrogen yields at boot, soft dough, and harvest and grain yield components were measured. The yield...
Field-plot experiments and pot culture techniques were used to
investigate reported Cu deficiency in certain Oregon organic soils.
Field experiments were established in 1973 and 1974 on an acid peat
soil and two alkaline muck soils near Klamath Falls, The effect of
rates of from 0 to 45 kg Cu/ha...
The potassium status of selected soils from central and eastern Oregon, that have shown a wide range in response from potassium was investigated. The silt and clay minerals were identified using X-ray crystallography. The potassium extracted by water, NH₄OAc, and HNO₃ was evaluated on the total soil and on the...
Three greenhouse experiments were designed to measure the
effects of N, K and Cl on the nutrient uptake by Russet Burbank potatoes
(Solanum tuberosum). A Deschutes sandy loam soil from Powell
Butte area in Central Oregon, low in potassium, was used to study
these effects.
Nitrogen applications produced significant increases...
The effect of soil temperature and soil water suction on the rate
of phosphorus uptake and growth rate of wheat (Triticum aestivum
VILL. ,
Host) was studied.
Plants were grown in perlite slabs
separated from an osmotic solution by a semi-permeable membrane.
Measurements were made at temperatures of 10.0, 18.3,...