Movement of Toxaphene and Fluometuron Through Dunbar Soil to Underlying Ground Water1
- K. S. LaFleur,
- G. A. Wojeck and
- W. R. McCaskill2
One hundred kilograms per hectare of toxaphene (octachlorocamphene) and 40 kg/ha of fluometuron (3-[m-trifluoromethylphenyl-1,1-dimethylurea) were applied to Dunbar topsoil in a field plot in the South Carolina Coastal Plain. Loss of both pesticides from the topsoil and accumulation in underlying ground water were monitored for 1 year.
Toxaphene loss from topsoil seemed to occur in two stages. The second (major) stage was crudely linear on a log residue vs. log time plot. Half-residence time in the topsoil was about 100 days.
Fluometuron loss from topsoil occurred in one continuous episode that was crudely linear on a log residue vs. linear time plot. Half-residence time in the topsoil was about 120 days.
Toxaphene and fluometuron were found in underlying ground water within 2 months after they were applied to the topsoil. Both pesticides persisted in ground water during the entire year. Overall, concentrations gradually decreased with time.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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