MOVEMENT OF WATER IN A PLINTHIC PALEUDULT USING A BROMIDE TRACER1

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Abstract
Plinthite is a subsurface soil feature that perches water during periods of excess soil moisture. Water movement in a plinthic soil in the Southern Coastal Plain was monitored over an 8-week period using a bromide tracer. Field investigations conducted on a Tifton loamy sand (Plinthic Paleudult) with a 4% slope indicate that much subsurface flow under saturated conditions occurs above and within plinthite. Results also indicate that movement through the plinthic horizons is slow and occurs primarily in low-chroma bodies associated with plinthite that are interconnected in dendritic patterns. Water does not readily penetrate the dense plinthic bodies. Plinthite is a subsurface soil feature that perches water during periods of excess soil moisture. Water movement in a plinthic soil in the Southern Coastal Plain was monitored over an 8-week period using a bromide tracer. Field investigations conducted on a Tifton loamy sand (Plinthic Paleudult) with a 4% slope indicate that much subsurface flow under saturated conditions occurs above and within plinthite. Results also indicate that movement through the plinthic horizons is slow and occurs primarily in low-chroma bodies associated with plinthite that are interconnected in dendritic patterns. Water does not readily penetrate the dense plinthic bodies. © Williams & Wilkins 1985. All Rights Reserved.

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