Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: 1/31/2009
Publication Date: 4/1/2009
Citation: Allen, K.C., Musser, F., Knighten, K. 2009. Response of Different Life Stages of the Tarnished Plant Bug to Various Insecticides. National Cotton Council Beltwide Cotton Conference. In: Proceedings of the Beltwide Cotton Conference January 5-8, 2009 san antonio, TX pp.802-805.
Technical Abstract: A laboratory experiment was conducted to examine the susceptibility of the nymphal stages and adult stage of the tarnished plant bug to a pyrethroid (permethrin) and an organophasphate (methamidophos) insecticide. One laboratory colony and the first generation of two field collected colonies were examined for their susceptibility to permethrin, while only the laboratory colony was used to examine susceptibility to methamidophos. Insects were individually placed into glass vials coated with various doses of each insecticide and mortality was recorded after three hours. Four replications of each of the first through fifth instar nymphs and adults were assayed with a different cohort of individuals used for each replication. For each insecticide, estimated LC50’s of the fourth and fifth instar nymphs were at least twice as high as that of adults for both insecticides examined, while the first through third instar nymphs were less than that of adults.