Oregon Pesticide Practice Test

Rotating different classes of pesticides is crucial in managing pest resistance development. When the same class of pesticide is used repeatedly, pests can gradually become resistant to that chemical. This resistance occurs because the pests that survive the pesticide application often carry genetic traits that make them less susceptible to the chemical. Over time, these resistant individuals proliferate, leading to a population that the pesticide can no longer effectively control.

By rotating different classes of pesticides, each with unique modes of action, you disrupt the selection pressure for resistance. This practice helps maintain the efficacy of existing pesticides, prolongs their useful life, and protects the integrity of pest management programs. It is an essential strategy for sustainable agriculture and ensures that farmers can continue to effectively manage pest populations without relying solely on any single pesticide.