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Agricultural Chemicals in Surface Runoff, Ground Water, and Soil: I. Endrin¹

ABSTRACT

Endrin (1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4, 4a,5,6,7,8,8aoctahydro-1,4-endo, endo-5,8-dimethanonapthalene) was surface applied at a rate of 0.337 kg/ha to sugarcane (Saccharum officinarum L.) plots instrumented to sample surface runoff and ground water. Runoff, ground water, and soil sampleswere collected over a 2-year period and analyzed for endrin. Only small amounts of endrin were lost annually in runoff (less than 0.2% of that applied), and little endrin accumulated in soil. Trace amounts of endrin appeared to move through soil in the plots but not through soil columns. A delay of 72 hours between application and rainfall decreased the amount of endrin in runoff, ground water, and soil.

Key Words: pesticide volatilization • pesticide movement

¹ Contribution from the Southern Region, ARS, USDA, Baton Rouge, La. 70803, cooperating with the Louisiana Agr. Exp. Sta.

² Soil Scientist and former Agricultural Research Technician (Chemistry), respectively, USDA-ARS, Baton Rouge, La.

Received for publication November 16, 1972.