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Distribution of Mercury in Soil and its Concentration in Runoff from a Biosolids-Amended Agricultural Watershed

J. J. Sloan*,a, R. H. Dowdyb, S. J. Baloghc and E. Naterb

a Texas Agricultural Experiment Station, Texas A&M University, 17360 Coit Road, Dallas, TX 75252-6599
b Dep. of Soil, Water and Climate, Univ. of Minnesota, 1991 Upper Buford Circle, St. Paul, MN 55108
c Metropolitan Council Environmental Services, 2400 Childs Road, St. Paul, MN 55106



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  		Fig. 1. Layout of the Rosemount agricultural watershed. Shaded areas correspond to the terraces used for soil sampling and runoff water collection. Dark lines in the shaded areas that radiate from the tile inlets show transects where soil samples were collected.

 


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  		Fig. 2. (a) Mercury concentrations in representative freeze-dried samples of biosolids applied to treated terraces. (b) Effect of freeze-drying on Hg concentrations in biosolids.

 


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  		Fig. 3. Soil Hg concentration along transects that originate at the tile inlet and proceeded in a direction perpendicular or parallel to the tillage operations.

 


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  		Fig. 4. Concentrations of Hg in reed canarygrass (Phalaris arundinacea L.) from areas receiving runoff discharge from biosolids-treated terraces versus areas receiving no runoff waters.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2001 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.