Abstract
Characterization of Claypan Soils in Southeastern Kansas
Highlights
Claypan soils are characterized by a highly impermeable clay layer within the soil profile that may act as a barrier to infiltrating water and root growth
In areas with a claypan, removal of productive topsoil reduces crop yield where the claypan layer is near the surface
Understanding the soil properties and the interaction between the topsoil and claypan layers may aid in understanding the process by which topsoil is being eroded
Summary
In areas with a claypan, removal of productive topsoil reduces crop yield where the claypan layer is near the surface. The topsoil and claypan layer each have unique characteristics that impact crop production and withinfield variability. To better understand these differences, the soils from an area of low crop yield and high crop yield were collected and laboratory tests were performed to determine the soil classification and undrained shear strength. Understanding the soil properties and the interaction between the topsoil and claypan layers may aid in understanding the process by which topsoil is being eroded
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