What is threshold level in pest management?
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.
Why is insecticide resistance bad?
Over time many pesticides have gradually lost their effectiveness because pests have developed resistance – a significant decrease in sensitivity to a pesticide, which reduces the field performance of these pesticides.
How is EIL calculated?
The EIL is based on the relation of five primary variables and can be estimated according to the following formula EIL = C/VIDK, in which C represents the cost of management tactic per production unit, V is the price of commodity, I is the injury units per pest, D is the damage per unit of insect injury, and K is the …
What is difference between insect and pest?
Pest vs. Insect. A pest is an animal or plant which has a harmful effect on humans their food or their living conditions while insects are arthropods that may or may not harm. Pests are always harmful to humans and their food, but in the case of insects, some insects are dangerous, but some are beneficial to humans.
What is difference between ETL and EIL?
The economic threshold Level (ETL) is the population density at which control measures should be determined to prevent an increasing pest population from reaching the Economic injury level (Fig. 2). EIL is the lowest pest population which will cause economic damage.
What are ETL and EIL?
Importance of Economic Threshold Level. Concept of Injury Levels. The concept of injury levels helps us to identify the population level at which an insect/pathogen can cause damage to the crop. Most popular terms used in this connection are the economic injury level (EIL) and the economic threshold level (ETL).
