The pest population level at which control measures should be started to prevent the pest population from reaching economic-injury level (Hill, 1983). The density of pest population at which a control action becomes profitable (Stern, 1966) (see action threshold).
In integrated pest management, the economic threshold is the density of a pest at which a control treatment will provide an economic return. An economic threshold is the insect`s population level or extent of crop damage at which the value of the crop destroyed exceeds the cost of controlling the pest. Economic thresholds can be expressed in a va....Found on http://en.wikipedia.org/wiki/Economic_threshold
see Action threshold.Found on http://www.biocontrol.entomology.cornell.edu/glossary.php
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