Persistence of Soil Insecticides for Control of Subterranean Termites1

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Abstract:

Seven insecticides (aldrin, dieldrin, chlordane, DDT, heptachlor, lindane, and sodium arsenite) mixed with 3 kinds of soil materials (crushed coral pH 8.3, sandy loam pH 7.6, and clay pH 7.2) were exposed in field plots. Bioassays made annually for the past 6 years, using Formosan subterranean termites, Coptotemes formosanus Shiraki, as the test insect have shown that sodium arsenite- and lindane-treated soils have lost much of their toxicity to the termites but that aldrin- and dieldrin-treated soils are still effective. There was also reduced toxicity of the DDT-, chlordane-, and heptachlor-treated soils.

Document Type: Research Article

Publication date: August 1, 1966

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