What is the characteristic of a selective pesticide relating to its impact on pests?

The characteristic of a selective pesticide that makes it distinct is its ability to affect only a specific group of pests while leaving non-target organisms unharmed. Selective pesticides work by targeting specific biological processes or traits that are unique to certain pests, which minimizes collateral damage to beneficial insects, plants, and the surrounding ecosystem. This selectivity is crucial for integrated pest management strategies, as it allows for pest control without detrimental effects on beneficial species or the environment.

In contrast, non-selective pesticides are designed to eliminate a broad range of pests, which can lead to disruptions in the ecological balance. The other characteristics related to effectiveness under specific conditions or frequency of application do not define selectivity but rather highlight the practical usage or limitations of certain pesticides. Understanding the selectivity of pesticides helps applicators make informed decisions about pest control methods that are both effective and environmentally responsible.