Index Catalog // ScholarsArchive@OSU

Creator:: Pikul, Joseph L.
Abstract:: Heat and water vapor flow in summer-fallowed fields in the Pacific Northwest may significantly affect the position and supply of water for germination of fall sown crops. New tillage tools and drill openers used in reduced tillage systems leave a trashy, residue covered surface in contrast to the traditional bare...
Resource Type:: Masters Thesis
Full Text:: moisture flow. Soil temperature responses to soil heat flow during the warm part of the season alter the

Creator:: Hammermeister, Dale P.
Abstract:: Experiments were carried out to study the movement of water and halide anions in perched water tables or saturated zones in the soil and upper rock mantle of eight different experimental sites located on low hills near the western border of the Willamette Valley. At each site the experimental procedure...
Resource Type:: Dissertation
Full Text:: Oregon AN ABSTRACT OF THE THESIS OF Dale Hammermeister for the degree of Doctor of Philosophy in Soil

Creator:: Green, David L.
Abstract:: The effects of aspect, canopy, elevation, and season both singly and in combination on soil temperatures at 50 cm depths were evaluated. The objectives of the study were (i) to develop a standard procedure for obtaining soil temperature data adequate to classify soils at the family and great group levels,...
Resource Type:: Masters Thesis
Full Text:: Soil Temperature Measurement and Predictability 6 Environmental and Physical Factors Influencing

Creator:: Flint, Alan L.
Abstract:: Measurements for water retention calculations and physical characterization were made on skeletal and non-skeletal soils in southwest Oregon. A new bulk density sampler was designed for the physical characterization of the steep, skeletal soils commonly encountered in this area. The new sampler and the techniques required for the measurement and...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT A sampler was developed for measurement of both rock fragment content and soil bulk density. The

Creator:: Hodges, T.
Abstract:: Leaf elongation is a major indicator of plant growth. It is controlled by complex interactions of many factors including light intensity, photoperiod, water availability, atmospheric conditions, and plant water stress. In this study, the response of leaf elongation to length of photoperiod and to plant water stress as indicated by...
Resource Type:: Masters Thesis
Full Text:: MASTER OF SCIENCE (Name) (Degree) in SOIL SCIENCE (Major Department) presented on June 14, 1974 (Date

Creator:: Pikul, Joseph Lawrence
Abstract:: Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest. Potential loss of soil by erosion is high whenever a soil thaws from the surface creating a saturated soil overlying an impermeable frozen layer. Field studies were conducted to investigate the effect of surface residue on soil freezing. Residue...
Resource Type:: Dissertation
Full Text:: OF CONTENTS Measurement of heat and water flow during soil freezing: Field experiments Introduction

Creator:: Ekasingh, Methi
Resource Type:: Dissertation
Full Text:: . (L) Merr. cv. Wilkin) as Affected by Soil Water Potential and Soil METHI ERASINGH AN ABSTRACT OF

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