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Published online 20 September 2006
Published in Soil Sci Soc Am J 70:1882-1888 (2006)
DOI: 10.2136/sssaj2005.0415
© 2006 Soil Science Society of America
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Trace Element Mobilization in Soils by Glyphosate

K. A. Barrett and M.B. McBride*

Dep. of Crop and Soil Sciences, Cornell Univ., Ithaca, NY 14853


Figure 1
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  		Fig. 1. Concentration of Cu in mineral soil (Hudson A) column leachate after soil treatment with CuSO4 alone (Cu), glyphosate alone (Gly), or CuSO4 with glyphosate (Cu+ Gly).

 

Figure 2
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  		Fig. 2. Concentration of Cu in organic soil (Carlisle) column leachate after soil treatment with CuSO4 alone (Cu), glyphosate alone (Gly), or CuSO4 with glyphosate (Cu+ Gly).

 

Figure 3
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  		Fig. 3. Concentration of total P and orthophosphate in mineral soil (Hudson A) column leachate after soil treatment with CuSO4 alone (Cu), glyphosate alone (Gly), or CuSO4 with glyphosate (Cu+ Gly).

 

Figure 4
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  		Fig. 4. Concentration of total P in organic soil (Carlisle) column leachate after soil treatment with CuSO4 alone (Cu), glyphosate alone (Gly), or CuSO4 with glyphosate (Cu+ Gly).

 

Figure 5
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  		Fig. 5. Correlation of dissolved Cu to dissolved P in the leachates collected from the Hudson A soil column after treatment with Cu-glyphosate (1:1 complex).

 

Figure 6
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  		Fig. 6. Effect of glyphosate addition (at time zero) to Caledon soil, uncontaminated (A) and contaminated by sewage-sludge metals (B), on the measured pCu, where pCu is the negative logarithm of the free Cu2+ activity.

 




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