A Rapid Method for Determining Physical Properties of Undisturbed Substrate

in HortScience
Authors:
Carl E. Niedziela Jr.Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609

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Paul V. NelsonDepartment of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609

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A new tube method for determining physical properties in container substrates was compared to an existing system. While both offer the advantages of undisturbed substrate and measurement of properties without altering the geometry of the substrate in the container, the tube method is easier to conduct. Both methods proved equally effective for determining air-tilled porosity, container capacity, total porosity, bulk density, and particle density.

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