lead arsenate

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  • noun

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a poisonous white solid (Pb3[AsO4]2) used as an insecticide

References in periodicals archive ?
Peryea FJ (1998) Historical use of lead arsenate insecticides, resulting soil contamination and implications for soil remediation.
That's a problem because if something like a canister of DDT or lead arsenate corrodes and leaks into the soil, it stays there for a very long time.
Exposed[n(%)] OR (95% CI) Arsenic (a) Cases Noncases Crude Adjusted (b) Lead arsenate crop insecticide Never used 140(93.
Ralph Miller was hired during the med fly program, and he and Yothers evaluated lead arsenate sprays for control of adult med flies.
The mass of Pb and As in current litter represents a contribution similar to the annual loading observed in the underlying sediments (Table 1), so it is plausible that the mass of Pb and As was elevated in the litter during peak use of lead arsenate pesticide.
Back in the 1930s, California sprayed lead arsenate at a rate as high as 2 pounds of active ingredient (AI) per tree--about 260 pounds AI per acre--and still did not succeed in eradicating walnut husk fruit fly infestations," explains Robert V.
However, the extensive use of lead arsenate in insect control has raised questions regarding the toxicity of these elements to plants and to animals feeding on sprayed or dusted plants.
They began flying mail in 1910 and, in 1921, a surplus First World War Curtiss JN-6H (Jenny) dropped powdered lead arsenate on an orchard full of sphinx moths, eliminating the pest and inventing crop-dusting.
In 1921, the first-ever aerial chemical application in the United States dropped lead arsenate dust over catalpa trees in Ohio.
THESE are the components of one of the pesticides commonly used in tobacco growing - lead arsenate - and both are found in cigarette smoke.
Between 1922 and 1930 the average number of applications of lead arsenate increased to four sprays per orchard growing season, and the dosage increased to 2 to 3 pounds per 100 gallons.
DDT displaced the more toxic and persistent lead arsenate.