What does pesticide resistance refer to?

Pesticide resistance refers specifically to the ability of a pest population to survive exposure to a pesticide that previously was effective in controlling it. Over time, through processes like natural selection, certain individuals within a pest population may possess genetic traits that confer resistance. When these pests are exposed to the pesticide, those with resistance are more likely to survive and reproduce, leading to a population that can withstand the chemical application.

This phenomenon is a significant concern in pest management because it can lead to reduced efficacy of pesticides, requiring higher doses or alternative strategies to manage pest populations. Understanding this concept is crucial for pest control professionals, as it influences how they select and rotate pesticides to manage pests effectively while minimizing the chances of resistance developing.

In contrast, the other options relate to different aspects of pesticides. The cost of pesticide production pertains to economic factors, pesticide degradation speed refers to how quickly a pesticide breaks down in the environment, and the ease of applying pesticides involves logistical considerations unrelated to the pest's ability to survive the application itself.