Movement and Persistence of DDT and Lindane in Soil Columns1
- W. D. Guenzi and
- W. E. Beard2
Columns of four soils were used to determine the amount of downward movement and persistence of DDT and lindane. Water was added at total depths of 12.7 and 25.4 cm to separate 10-cm-diameter leaching columns. After leaching, the columns were sectioned in 3-cm layers. Lindane was leached to a greater extent with 25.4 cm than with 12.7 cm, and to a greater extent in a loamy sand soil than in a clay soil. DDT remained in the O- to-3-cm layer in all soils regardless of the amount of water applied.
Pesticide-amended soils subjected to wetting and drying cycles lost more lindane than DDT. In the treatment receiving 25.4 cm of water during the cycling process, 57% of the applied lindane was recovered as compared to 76% of the DDT.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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