Moth Busting for Bt Resistance Management

Date Issued:2006-08-10

Abstract

Targeting the last generation of Helicoverpa armigera that typically escape cotton fields prior to pupae busting with the use of summer trap crops has been an integral component of the central Queensland Bt resistance management strategy. A superior method for targeting these escapes might be to use area-wide applications of the attract and kill product Magnet on late season cotton fields. Experiments that aimed to assess the potential efficacy of area-wide applications of Magnet laced with insecticide for Helicoverpa moth control in the Dawson Valley suggest considerable potential for such a strategy with significant reductions in Helicoverpa being recorded after each application. Further experimentation to test the validity of area wide Magnet applications as an alternative strategy to trap cropping will be conducted during the 2006/07 season. This paper outlines the progress of the research to date.

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