Bioassays developed and extensive screening undertaken between 2007-10 * No changes in resistance factors in cotton from 2007 to 2010 * Elevated resistance factors recorded in horticultural regions for pyriproxyfen (Admiral) emphasise the importance of the cotton IRMS and a maximum one application Admiral per season * No changes recommended to current insecticide resistance management practices in cotton * Registration of spirotetramat (Movento) in the 2010-11 season with a unique mode of action will assist the insecticide resistance management strategy in cotton * Future directions in resistance monitoring need to address correlating resistance factors with field performance