A threshold is a critical level of pest infestation at which control measures should be initiated to prevent the pest population from reaching economically damaging levels. A threshold will vary based on a combination of factors, including the type of crop, the specific pest species, the growth stage of the crop, weather conditions and the economic impact of pest damage.
This fact sheet provides an overview of establishing thresholds and monitoring pests and beneficials to support your integrated pest management (IPM) activities.