Economic-injury Level (EIL) (Stern et al., 1959) – “The lowest population density of a pest that will cause economic damage; or the amount of pest injury which will justify the cost of control.” … 2 (Important Components of a Successful Pest Management Program).
What is economic damage of pest?
The smallest number of insects (amount of injury) that will cause yield losses equal to the insect management costs. Economic threshold. The pest density at which management action should be taken to prevent an increasing pest population from reaching the economic injury level.”
What are economic pests?
PEST stands for Political, Economic, Social, and Technological factors. … The letter ‘E’ in PEST analysis stands for economic factors. It gauges the economic environment by studying factors in the macro economy such as interest rates, economic growth, exchange rate as well as inflation rate.
What is economic threshold in pest management?
This is referred to as an economic threshold, and is the basis of integrated pest management recommendations in crop production. The goal of the economic threshold is to prevent a pest population from reaching the point where its damage causes monetary losses that are equal to the cost of control.
How do you calculate economic injury level?
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 economic damage level?
The economic injury level (EIL) quantifies the costs and benefits of IPM pest control decisions for sustainable crop production (Ramsden et al., 2017). The EIL is the number of insects or injury level that would generate economic losses equal to control costs.
What is economic importance of insect pest?
Insects are important for pollinating crops we use for food, as a food source themselves in some countries, and decomposing dead material to recycle nutrients. Insects are also important because of the damage they can cause to humans. Some insects spread disease; others can decimate our food supply.
Which is the economically useful insect?
So, the correct answer is ‘Tachardia lacca‘.
Which insects are economically important?
Useful Predaceous Insects:
Stagomantis, a mantis is voracious, it feeds on flies, grasshoppers and caterpillars, some of which are injurious to crops. The larvae and adults of Chilomenes, a lady-bird beetle, feed on aphids which infect cotton plants.
What are the tools of IPM?
Basic Tools of Integrated Pest Management
- Cultural practices. Cultural methods of pest control consist of regular farm operations in such a way which either destroy the pests or prevent them from causing economic loss. …
- Mechanical practices. …
- Genetic practices. …
- Regulatory practices. …
- Biological practices. …
- Chemical practices.
What are major pests?
Major pests are the species that need to be controlled. … These are the less serious species of insect that are recorded feeding or ovipositing on a crop plant. Usually they inflict only slight damage on the host, and often their effect is indiscernible.
How do you understand the economic 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.
What is the first thing you should do when you detect the presence of a pest?
What is the first thing you should do when you detect the presence of a pest that you think you may need to control? A. Identify the pest to be sure you know exactly what the problem is.
What is regular pest?
Regular pest: Frequently occurs on crop – Close association e.g. Rice slem borer, Brinjal fruit borer. Occasional pest: Infrequently occurs, no close association e.g. Caseworm on rice, Mango stem borer. Seasonal pest: Occurs during a particular season every year e.g. Red hairy caterpillar.