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 Seelig, B. D. Articles by Richardson, J. L. Search for Related Content PubMed Articles by Seelig, B. D. Articles by Richardson, J. L. Agricola Articles by Seelig, B. D. Articles by Richardson, J. L.

Sodic Soil Toposequence Related to Focused Water Flow

Extension Agricultural Engineering

J. L. Richardson

Dep. of Soil Science, North Dakota State Univ., Fargo, ND 58105

*Corresponding author.

ABSTRACT

Present concepts of sodic soil formation do not adequately account for observed variability of sodic soil properties on many landscapes in North Dakota. A conceptual model was developed to explain sodic soil genesis related to water and salt movement on a coarse-loamy till landscape in central North Dakota. The relationship between subsurface water flow and sodic soils was determined by monitoring soil water using neutron attenuation and water wells at three contiguous landform positions. Electrical conductivity, major ions, and water-dispersible clay were determined on extracts from selected soil samples from each landform position. Typic Argiaquolls, characterized by low salinity (electrical conductivity [EC] < 2.0 dS/m), occurred at the wetland position and were areas of recharge to groundwater. Typic Natraquolls also occurred at the wetland position but were characterized by high salinity (EC > 5.0 dS/m) and were areas of groundwater discharge. Udic and Leptic Natriborolls were areas of groundwater discharge at the intermediate and upland positions. Udic Haploborolls were hydrologically inactive areas at the upland position. Variations in sodic soil development were attributed to the concentration of water flow (focused flow) into specific areas of groundwater discharge or recharge. The most important factors that affected the direction and intensity of focused flow were stratigraphy and landform position.

Contribution of North Dakota Agric. Exp. Stn. Journal paper no. 2128.

Received for publication January 21, 1993.

This article has been cited by other articles:

				N. E. Derby and R. E. Knighton Field-Scale Preferential Transport of Water and Chloride Tracer by Depression-Focused Recharge J. Environ. Qual., January 1, 2001; 30(1): 194 - 199. [Abstract] [Full Text]