Accession Number : AD0725573

Title :   Entomological Special Study No. 31-005-71. Effectiveness of 9.9 Percent Dursban(R) (TRADEMARK) in Polyethylene Applied as a Pre-Season Larvicide, February-April 1970.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ENVIRONMENTAL HYGIENE AGENCY ABERDEEN PROVING GROUND MD

Personal Author(s) : Parker, Thomas A.

Report Date : APR 1970

Pagination or Media Count : 8

Abstract : Naturally-occurring woodland pools, located on Edgewood Arsenal, Maryland, were treated, at rates of 0.5, 1.0, and 2.5 ppm active ingredient (1.4, 2.7, and 6.8 lbs/acre) with polyethylene pellets containing 9.9 percent Dursban (0,0-diethyl 0-(3,5,6-trichloro-2-pyridyl) phosphorothioate). Larval populations of Aedes canadensis Theobald were reduced for 13 weeks at all dose rates. However, the treatments were not completely effective in eliminating the larvae from the pools, apparently due to the fact that the floating pellets were found primarily at the periphery of the pools where they lost contact with the water as it receded and were unable to maintain residues. (Author)

Descriptors :   *INSECTICIDES, *LARVAE, *AEDES, DOSE RATE, DOSAGE, ENTOMOLOGY, CULICIDAE.

Subject Categories : Ecology
      Pesticides Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE