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Abstract

The measurement of soil hydraulic properties is critical in understanding the physical components of soil health as well as integrated knowledge of soil systems under various management practices. Collecting reliable data is imperative for informing decisions that affect agriculture and the environment. The simple evaporation experiment described here uses instrumentation in a laboratory setting to analyze soil samples collected in the field. The soil water tension of the sample is measured by the instrument, and tension data is modeled by software to return soil hydraulic properties. This method can be utilized to measure soil water retention and hydraulic conductivity and give insight into differences in treatments or environmental dynamics over time. Initial establishment requires a user, but data acquisition is automated with the instrument. Soil hydraulic properties are not easily measured with traditional experiments, and this protocol offers a simple and optimal alternative. Interpretation of results and options for extending the data range are discussed.

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Soil Water PotentialSoil ConductivityHydraulic PropertiesEvaporation ExperimentSoil HealthData AcquisitionSoil Water RetentionHydraulic ConductivityInstrumentationLaboratory AnalysisAgricultural ManagementEnvironmental DynamicsTreatment DifferencesAutomated Data Collection

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