EFFICACY OF SELECTED INSECTICIDES FOR CONTROL OF HELIOTHINES IN CONVENTIONAL NON-BT COTTON 2004-2005

摘要

Field experiments were conducted in 2004-2005 in Jefferson County, Arkansas to evaluate efficacy of selected insecticides to control bollworm, Helicoverpa zea, and tobacco budworm, Heliothis virescens. The insecticides selected for these studies wereboth traditional and experimental. In the 2004 study, the selected insecticides were Steward (indoxacarb), a Steward (indoxacarb) and Asana XL (esfenvalerate) tank mix, S-1812, V-10132, Tracer (spinosad), a Tracer (spinosad) and Capture (bifenthrin) tankmix, Denim (emamectin benzoate), Diamond (novaluron) and bifenthrin tank mix, Karate Z (lambda-cyhalothrin), Leverage (imidachloprid + cyfluthrin), and a Karate Z (lambda-cyhalothrin) and Steward (indoxacarb) tank mix. In the 2005 study, the selected insecticides were Steward (indoxacarb), KN-128 tank mixed with Penetrator Plus (nonionic oil concentrate), KN-128, Tracer (spinosad), Bidrin (dicrotophos) tank mixed with Discipline (bifenthrin), Experimental 1, and Double Threat (bifenthrin and spinosad). In both studies, significant differences were observed among treatments in regard to heliothine damage and heliothines found.