Outline/Question The effectiveness of the Bt refuge strategy relies not only on the production of susceptible moths in refuge crops, but also the movement of these moths within the Bt cotton landscape.

A major threat to the longevity of Bt cotton is Helicoverpa's ability to develop genetic resistance to high doses of Bt toxins.

These end of season resistance management tactics are key components of the Bollgard II resistance management plan (RMP).

The Spring edition of CRDC's quarterly magazine, Spotlight, provides growers and the wider industry with all the latest R&D news and information as the 2013-14 crop is planted.

Bollgard II® resistance update]