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Full-Text Articles in Soil Science
Interpretation Of Selected Soil Data From The Central Part Of Utah, Amjad T. El-Rihani
Interpretation Of Selected Soil Data From The Central Part Of Utah, Amjad T. El-Rihani
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Seventy-eight soil samples belonging to 15 sites were sampled by SEAM project in 1976. These 15 pedons represent different soil types which cover the Manti-LaSal area in the central part of Utah. The 15 pedons were described in standard notation. Complete soil analysis was done. The soil analysis includes the following determinations: particle size distribution, moisture retention, soil pH, organic matter, electrical conductivity, calcium carbonate equivalent, cation exchange capacity , base saturation, extractable cations and saturation extract soluble. Also x-ray diffraction for selected horizons was done.
The 15 pedons were classified according to the currently used system. This report includes …
Model For Estimating Soil Water Flow, Water Content, Evapotranspiration And Root Extraction, Musa N. Nimah
Model For Estimating Soil Water Flow, Water Content, Evapotranspiration And Root Extraction, Musa N. Nimah
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A mathematical model was developed to predict water content profiles, evapotranspiration, water flow from or to the water table, root extraction and root water potential at the surface as functions of time under unsteady state conditions.
The model was tested in the field at The Hullinger Farm near Vernal, Utah, in 1970 and 1971. Comparison of water content-depth profiles show excellent agreement at the end of a 9- day run in 1970 on oats seeded to alfalfa. In 1971 with alfalfa as the crop, the data show best agreement, between predicted and computed water content-depth profiles, 48 hours after any …
Role Of Transition Metals In Nitrite Decomposition In Soil, J. S. Bajwa
Role Of Transition Metals In Nitrite Decomposition In Soil, J. S. Bajwa
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Iron and copper increased the decomposition of nitrite significantly during the first two hours of reaction when 150 parts per million (ppm) of nitrite and nitrogen was added to an acidic soil. Manganese was found to have a slight effect. There was no additional effect of the added metals after two hours reaction time.
The higher concentration of metals was not effective in catalyzing the decomposition of the added nitrite in nitrogen. All the added nitrite nitrogen was not recovered and the deficit could be due to the formation of nitrogen gas.