Concept of pest status

Question

20 Jan 2021

Answer :

Word Count : 269

The pest status of an insect population depends on the abundance of individuals as well as the type of nuisance or injury that the insects inflict. Injury is the usually deleterious effect of insect activities (mostly feeding) on host physiology, whereas damage is the measurable loss of host usefulness, such as yield quality or quantity or aesthetics. Host injury (or insect number used as an injury estimate) does not necessarily inflict detectable damage and even if damage occurs it may not result in appreciable economic loss. Sometimes, however, the ________ ___ ________ ______ ___ _______ _____ _______ ________ _________.
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