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Creator:: Ashcroft, Gaylen L.
Resource Type:: Dissertation
Full Text:: equation for moisture movement in unsaturated soil GAUSSIAN ELIMINATION TECHNIQUE FOR SOLVING THE

Creator:: Stammers, William Norman
Abstract:: Several investigators have recently called attention to the fact that the flux equation for water movement in unsaturated soils may not be an appropriate mathematical model for the development of the theory of unsaturated flow phenomena. An analytical theory is developed for the purpose of testing the validity of the...
Resource Type:: Dissertation
Full Text:: moisture gradient form of Darcy's law is a valid model for water flow in a coarse textured soil at water

Creator:: Sepaskhah, Ali Reza
Abstract:: The effect of soil temperature and plant water stress on nitrogen uptake, growth rate and transpiration rate of wheat (Triticum aestivum VILL. , Host) seedlings was studied. A special apparatus for the control of plant water stress and root temperature was used. Leaf area was measured by the air flow...
Resource Type:: Masters Thesis
Full Text:: affected by soil moisture. Prusakova (1960) showd that in wheat leaves larger amounts of trypto- phan

Creator:: Stevenson, David Stuart
Abstract:: There is considerable evidence that the growth and elongation of plant roots increases linearly or almost linearly with increasing water contents or decreasing moisture-tension of soil. If this is true it is difficult to distinguish the effects of different water contents on absorption phenomena such as water or ion uptake...
Resource Type:: Dissertation
Full Text:: Effects of Soil Moisture-Tension on Rubidium Uptake by

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:: Nagpal, Narender Kumar, 1942-
Abstract:: One of many important physical properties that must be known to understand transport phenomena in soils is pore size distribution. Presently the pore size distributions of soils are most commonly obtained from soil water characteristic curves. The soil water characteristic curves are usually obtained by the pressure plate technique. It...
Resource Type:: Dissertation
Full Text:: . Presently the pore size distributions of soils are most commonly obtained from soil water characteristic

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

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:: during soil freezing and thawing AN ABSTRACT OF THE THESIS OF Joseph L. Pikul Jr. for the degree of

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