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Bioremediation of Residual Fertilizer Nitrate

II. Soil Redox Potential and Soluble Iron as Indicators of Soil Health During Treatment

Benjamin U. Ugwuegbu, Shiv O. Prasher, Darakhshan Ahmad and Pierre Dutilleul

INRS-Santé, Université du Québec, 245 Boulevard Hymus, QC, Canada H9R 1G6



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  		Fig. 1. Changes in redox potential (Eh) with high glucose C (970 mg L-1) in the subirrigation water at the (a) 40-cm, (b) 60-cm, and (c) 85-cm depths (Experiment I, Stage 1). Error bars show standard deviations

 


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  		Fig. 2. Changes in redox potential (Eh) with low glucose C (120 mg L-1) in the subirrigation water at the (a) 40-cm, (b) 60-cm, and (c) 85-cm depths (Experiment I, Stage 2). Error bars show standard deviations

 


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  		Fig. 3. Redox potential (Eh) after 96 d at various glucose C concentrations and depths of (a) 40 cm, (b) 60 cm, and (c) 85 cm (Experiment II). Error bars show standard deviations

 


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  		Fig. 4. Iron (a) and Mn (b) concentrations and pH (c) of soil solution on Day 96 at various glucose C concentrations and depths (Experiment II). Error bars show standard deviations

 




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