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This is referred to as an economic threshold, and is the basis of integrated pest management recommendations in crop production These concepts help to determine when pest. Determining the appropriate threshold for pest control is a nuanced task, often reliant on specific factors such as the type of crop and potential economic impact.

The pest density at which management action should be taken to prevent an increasing pest population from reaching the economic injury level. A nominal threshold is an estimated value from entomologist best experiences used when the relationship between an insect pest and an crop yield has not been measured experimentally Expressed in terms of yield, economic loss is reached at the gain threshold, and the gain threshold is beyond the damage boundary

For high value commodities, the damage boundary may be very close to the gain threshold.

An economic threshold (et) is typically the pest population density at which a pest control action (e.g., pesticide, biological control, cultural control, etc.) should be taken in order to prevent an increasing pest population from reaching economically damaging levels, which is the economic injury level (eil).

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