Title: Contact toxicity of twenty insecticides applied to Symmerista canicosta
Author: Robertson, Jacqueline L.; Lyon, Robert L.; Shon, Fay L.; Gillette, Nancy L.;
Source: Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 3p.
Publication Series: Miscellaneous Publication
Description: Twenty insecticides were tested by topical application on mixed groups of 4th- and 5th -stage larvae of Symmerista canicosta Franclemont. Four exceeded DDT in toxicity at LD50 but only resmethrin was significantly mor toxic. Most of the compounds showed unusually high toxicities. Twelve, listed in decreasing order of toxicity, caused 50% mortality with <5μg/g body weight: resmethrin, methonmyl, phoxim, pyrethrins, DDT, Zectran (4-dimethylamino-3.5-xylyl methylcarbamate), chlorpyrifos, Landrin (3,4,5- (93%) and 2,3,5-trimethylphenyl methylcarbamate (7%)), Gardona (2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethyl phosphate), carbaryl, Imidan (0,0-dimethyl phosphorodithioate S-ester with N-(mercaptomethyl) phthlimide), and aminocarb. Several were promising candidates for field testing.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Robertson, Jacqueline L., Lyon, Robert L., Shon, Fay L., Gillette, Nancy L. 1972. Contact toxicity of twenty insecticides applied to Symmerista canicosta. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 3p.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility