In managing insect pests growers are today faced with increasing insecticide resistance, a lack of new chemistry and increasing production costs. The introduction of transgenic Bacillus thuringiensis,(BT- Cr1lAc), technology will allow a general reduction in insecticide use. However it is important to delay resistance to conventional chemistry for as long as possible, as their use will play a critical role in managing/delaying resistance to transgenic (Ingard), plants. Therefore using appropriate heliothis thresholds for Ingard crops is important