Economic threshold

economic threshold. A level of pest population or damage at which the cost of control action equals the crop value gained from control action.
ectoparasite. A parasite that lives on the outside of its host.

economic threshold The level at which pest damage justifies the cost of control. In home gardening, the threshold may be aesthetic rather than economic.
egg A female sex cell.
emasculate To remove a flower's anthers.

The economic threshold for voles is very low; any sighting indicates the need for control measures.

See also: Population, Thresh, Harvest, Planting, Pest management