as the lowest population density that will cause economic damage. … Although the EIL is expressed as a pest density, it is actually a level of injury that is indexed by pest numbers. We use insect numbers for practicality, i.e., it is usually easier to count pests rather than to quantify and project future injury.
What is ETL in agriculture?
Economic Threshold Level (ETL) It is the pest density at which control measures should de applied to prevent an increasing pest population from reaching the economic injury level. Economic Threshold Level (ETL) of Paddy Insect Pests. Name of the Insect Pests. Economic threshold level.
What is pest assessment?
PEST Analysis (political, economic, social and technological) is a management method whereby an organization can assess major external factors that influence its operation in order to become more competitive in the market.
What are 3 categories of pest?
Seasonal pests: Occurring during a particular part of the year.
- Insect: These are important and major pests.
- Mites: These are creatures like insect but have soft body and four pairs of legs.
- Rodents – This group of pest eat away large amount of human food and also damage the crops on large scale.
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 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.
Which insects are useful to humans?
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- Earthworms. These creepy crawlies go about their way roaming through the soil and providing it nutrients, better drainage ability, and a stable structure which all adds to its fertility. …
- Lady bug. Lady Bug. …
- Bees. Pollination is vital for the existence of this world. …
- Praying Mantis. …
- Ground Beetle.
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.
Who should use PEST analysis?
PEST analysis is beneficial when conducting research before beginning a new project or to help conduct market research, using these factors: Political—Laws, global issues, legislation and regulations that may have an effect on your business either immediately or in the future.
How many types of pests are there?
Ninety eight percent pests are controlled by nature. There are certain predators, parasites, birds, animals, micro-organisms that can be used for control of pests. Certain biological factors used to control the pests are : Tricogama, Crysopa, HNPV, LLNPV, Chilonus, Copidosoma, Bacillus thuringenesis.