IPM of mirids in Australian cotton: Why and when pest managers spray for mirids

► There is no cost to yield in adhering to mirid thresholds, vindicating the thresholds. ► Pest managers accepted mirid number thresholds for visual surveys but not beatsheets. ► Interpretive knowledge is common problem in multi-disciplined groups. ► It may be why pest managers were reluctant to accept mirid thresholds for beatsheets. ► Overcoming differences in interpretive knowledge is important to develop mirid IPM.