What is one method to manage pesticide resistance?

Rotating different classes of pesticides with varying modes of action is an effective strategy for managing pesticide resistance. This method works by preventing target pests from becoming resistant to a specific pesticide, as different classes attack the pests in various ways. By alternating between pesticides that operate through different mechanisms, the likelihood that pests will survive and reproduce despite pesticide application is reduced. This practice helps maintain the efficacy of the pesticides over time and can prolong the useful life of these products.

In contrast, increasing the dose of the same pesticide can lead to faster development of resistance because the pests are continuously exposed to the same mode of action. Applying pesticides less frequently may reduce the pressure on pest populations but does not address the development of resistance if those applications are ineffective. Using only one type of pesticide continuously can rapidly lead to resistance, as pests adapt to that specific chemical over time. Hence, rotating different classes ensures a more sustainable approach to pest management.