Date of Award:
Doctor of Philosophy (PhD)
Plants, Soils, and Climate
Astrid R. Jacobsen (Committee Co-Chair), Grant E. Cardon (Committee Co-Chair)
Astrid R. Jacobsen
Grant E. Cardon
Janis L. Boettinger
Scott B. Jones
Paul R. Grossl
High amounts of salts in soils and a greater tendency of these soils to become even more saline is of great concern in arid and semi-arid western United States. Soils in Cache County, Utah are no exception. Salinization negatively affects the soil, crop, and the quality of groundwater. Thus, the long-term sustainable management of irrigated agricultural lands is threatened.
However, the salinity of these soils are closely monitored and managed to ensure sustainable agricultural productivity. A widely accepted and traditional standard method for estimating soil salinity is by measuring electrical conductivity of saturated paste extracts. Apart from the tedious and time-consuming nature of this method for detailed salinity inventory, it underestimates salinity due to a chemical artifact referred to as ion pair formation in high ionic strength solution.
The purpose of this research is to evaluate the utility of an electromagnetic induction sensing to understand the dynamics and interacting factors controlling soil salinity. With the electromagnetic induction technique, salinity can be monitored rapidly and non-destructively. However, electromagnetic induction measurements must be calibrated to measure salinity. The challenge in calibration is because the sensor estimates other properties of the soil in addition to salinity. Previous studies assumed uniformity of all soil properties, except soil salinity, influencing the sensor reading. Such homogeneous conditions rarely occur in soil.
Amakor, Xystus N., "Using Electromagnetic Induction Sensing to Understand the Dynamics and Interacting Factors Controlling Soil Salinity" (2013). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 1723.
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