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Toxicity of Aqueous Formulations of Bifenthrin and Malathion to Boll Weevil

D.A. Wolfenbarger


Toxicity of technical bifenthrin and malathion against the laboratory reared boll weevil, Anthonomus grandis (Boheman), were greater when topically applied in acetone to dorsum thorax than in solvent-emulsifier concentrate (EC) formulations in aqueous. Toxicity of bifenthrin (EC) formulation (in petroleum solvent) in Milli-Equivilant (MQ) water for dead category were significantly less than for dead + moribund category after 1 and 24 h in solution whether topically applied, tarsi were wiped in aqueous or in dry droplet. Topical application of malathion (in petroleum solvent) after 1 h in solution with MQ or domestic water showed poor toxicity.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pp. 1090 - 1093
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998