Index Catalog // ScholarsArchive@OSU

Comparison of techniques for calibration of gypsum and fiberglas electrical resistance units for soil moisture measurement

Creator:: Twersky, Marvin
Resource Type:: Masters Thesis
Full Text:: fiberglas electrical resistance units for soil moisture measurement COMPARISON OF TECHNIQUES IT)R

Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon

Creator:: Jibury, Falih Khidir
Abstract:: The objective of this study was to estimate the bulk densities and points on the moisture-tension curves and to determine their associated variances for some of the selected mapping units in Central Oregon. These variances will produce informations concerning the precision of the mean and the optimum sampling schemes, for...
Resource Type:: Masters Thesis

The effect of organic matter on "available soil water "

Creator:: Peebler, Francis Eugene
Resource Type:: Masters Thesis
Full Text:: to be recognized that the soil moIsture-holding capacity was increased thereby. The question

Soil moisture retention characteristics of certain Oregon soils as related to mechanical composition and organic matter content

Creator:: Engibous, James Charles
Resource Type:: Masters Thesis
Full Text:: Soil moisture retention characteristics of certain Oregon

Nitrogen uptake by wheat (Triticum aestivum VILL., Host) as a function of root temperature and plant water stress

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

Water loss and uptake in clayey subsoil materials

Creator:: Stannard, Davis Robertson
Abstract:: B and C horizon samples from twenty four selected profiles along a north-south transect in the Willamette Valley were examined for possible correlation between shrinkage properties and kind of clay minerals present. Observations of linear shrinkage, weight loss from a condition of maximum plasticity, and changing character of X-ray diffraction...
Resource Type:: Masters Thesis
Full Text:: materials of amorphous or poorly crystalline nature. Soil Structure If, as just lndicated, the moisture

The effect of soil moisture suction and soil temperature on transpiration, photosynthesis and respiration in Monterey pine (Pinus radiata D. Don)

Creator:: Babalola, Olaoluwa
Abstract:: A special apparatus was developed in which the soil moisture levels of several soil cells could be maintained independently by various osmotic solutions at a selected temperature. The effect of four soil moisture suctions and four soil temperatures on the rates of transpiration, photosynthesis and respiration of monterey pine seedlings...
Resource Type:: Masters Thesis
Full Text:: The Effect of Soil Moisture Suction and Soil Temperature

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

Creator:: Amujo, Stephen Jimo
Abstract:: The effect of moisture stress and nutrients on the rate of growth of wheat (Triticum aestivum L. Var. Gaines) seedlings was studied. A special apparatus in which the moisture stress of several perlite cells could be maintained constant by osmotic solutions was used. Predetermined amounts of nitrogen were added to...
Resource Type:: Masters Thesis
Full Text:: as a function of soil moisture stress for nitrogen con- centrations in the nutrient solutions of 0

The effect of soil temperature and soil moisture stress on S-urea mineralization and ryegrass yield

Creator:: Akratanakul, Wanee
Abstract:: A growth chamber experiment was conducted to determine the rate of S-urea mineralization and effect of S-urea on the yield of ryegrass (Lolium multiflorum) grown in Steiwer soil as influenced by soil temperature (60, 75, and 90° F) and soil moisture stress (0. 10, 0.35, and 2.50 bars). Plant yield,...
Resource Type:: Masters Thesis
Full Text:: The effect of soil temperature and soil moisture stress on

Growth rate of flax as affected by soil moisture levels

Creator:: Newcomb, Gerald Titus
Resource Type:: Masters Thesis
Full Text:: Growth rate of flax as affected by soil moisture levels iLN

ScholarsArchive@OSU

Comparison of techniques for calibration of gypsum and fiberglas electrical resistance units for soil moisture measurement

Variations of moisture retention properties and bulk densities of soils between and within soil-mapping units in central Oregon

The effect of organic matter on "available soil water "

Soil moisture retention characteristics of certain Oregon soils as related to mechanical composition and organic matter content

Nitrogen uptake by wheat (Triticum aestivum VILL., Host) as a function of root temperature and plant water stress

Water loss and uptake in clayey subsoil materials

The effect of soil moisture suction and soil temperature on transpiration, photosynthesis and respiration in Monterey pine (Pinus radiata D. Don)

Growth rate of wheat (Triticum aestivm L., var. Gaines) as a function of moisture stress and nitrogen supply

The effect of soil temperature and soil moisture stress on S-urea mineralization and ryegrass yield

Growth rate of flax as affected by soil moisture levels

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