HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Afyuni, M. M. Articles by Robarge, W. P. Search for Related Content PubMed Articles by Afyuni, M. M. Articles by Robarge, W. P. Agricola Articles by Afyuni, M. M. Articles by Robarge, W. P.

Lateral and Vertical Bromide Ion Transport in a Piedmont Landscape

Department of Soil Science, North Carolina State Univ., Raleigh, NC 27695-7619

*Corresponding author.

ABSTRACT

Variation in soil physical properties and soil water transport can affect solute transport at different positions within a landscape. Our objective was to evaluate the magnitude of lateral and vertical transport of Br^– under natural rainfall conditions as a function of landscape position. Potassium bromide was surface applied (300 kg Br^–/ha) on three transects of Georgeville soil (clayey, kaolinitic, thermic Typic Hapludults) in the Piedmont of North Carolina. Each transect included a footslope, linear slope, and interfluve landscape position. The KBr was applied on alternate plots (5 by 2.7 m) on two transects and on contiguous plots on the third transect. Soil cores as deep as 3 m were collected after 140, 560, and 1460 mm of rainfall. Extent of lateral Br^– transport was determined using cores from plots that did not receive surface application of KBr. After 140 mm of rainfall, the maximum Br^– concentration remained in the upper 30 cm and some measurable lateral Br^– transport occurred at all landscape positions. After 560 mm of rainfall, the maximum Br^– concentration was above 60 cm, but some was detected at 150 cm on the footslope and interfluve positions. Lateral transport of Br^– at the footslope and linear slope positions was 150 cm, but maximum concentrations occurred 10 to 45cm downslope. After 1460 mm of rainfall, most Br^– disappeared from the footslope. Downslope lateral transport of Br^– was 225 cm at all landscape positions. Both vertical and lateral Br^– transport were greatest at the footslope. The variability in Br^– transport is related to soil profile characteristics and hydrology at different landscape positions.

Contribution from the Dep. of Soil Science, North Carolina State Univ.

Received for publication February 1, 1993.

This article has been cited by other articles:

				D. K. Cassel, M. M. Afyuni, and W. P. Robarge Manganese Distribution and Patterns of Soil Wetting and Depletion in a Piedmont Hillslope Soil Sci. Soc. Am. J., May 1, 2002; 66(3): 939 - 947. [Abstract] [Full Text] [PDF]

				J. S. Strock, D. K. Cassel, and M. L. Gumpertz Spatial Variability of Water and Bromide Transport Through Variably Saturated Soil Blocks Soil Sci. Soc. Am. J., November 1, 2001; 65(6): 1607 - 1617. [Abstract] [Full Text] [PDF]