HORTICULTURE SCIENCE
DISEASE AND PEST MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Economic Injury Level
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Economic Threshold
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Either A or B
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None of the above
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Detailed explanation-1: -If the benefits under consideration are social (e.g. relative freedom from clouds of insects which are a nuisance but otherwise harmless) EIL is known as the aesthetic injury level.
Detailed explanation-2: -An economic threshold (ET) is defined as: ‘the pest population likely to cause damage equal in value to the cost of control (pesticide plus application). ‘ Such a population is known as the ‘critical’ or ‘break even’ population.
Detailed explanation-3: -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).