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Heliothine Control in B.t. and Non-B.t. Cotton with the advent of Boll Weevil Eradication

Donald R. Johnson, Jack Reaper, III, John D. Hopkins and Gus M. Lorenz, III


ABSTRACT

An experiment was conducted in Lafayette County, AR, in 2001 to evaluate insecticide performance in B.t. and conventional cotton during the late stages of boll weevil eradication. Beneficial insects were more common in the B.t. variety. Heliothine control with Karate was comparable to newer insecticides, possibly due to the high bollworm:budworm ratio throughout the season. Bollgard was successful in suppressing the Heliothine complex without the use of chemical insecticide. However, no significant differences were observed with respect to lint yield. Further investigation is necessary to determine economical Heliothine management options in boll weevil eradication areas.





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Document last modified May 20, 2002