Which of the following practices is effective in reducing pesticide resistance?

Utilizing a mix of chemical and non-chemical methods is effective in reducing pesticide resistance because this approach promotes integrated pest management (IPM). By combining different strategies, such as biological control, cultural practices, and chemical solutions, you disrupt the life cycles of pests and reduce their reliance on a single mode of action. This diversity in pest control measures minimizes the chances of pests developing resistance to any single pesticide.

In contrast, relying solely on chemical pesticides can lead to resistance over time, as consistent use of the same chemical can create selection pressure for resistant pest populations. Similarly, applying the same pesticide continuously or using pesticides more frequently can exacerbate this issue, as it allows pests to adapt to the pesticide's active ingredients. Thus, a mixed approach is essential for sustainable pest management and reducing the risk of resistance.