MDARD Michigan Core Pesticide Applicator Practice Exam

Which of the following is true about synthetic organic pesticides?

1. They are derived solely from natural sources

2. They can lead to rapid pest resistance

3. They are always less effective than natural pesticides

4. They cannot be used in organic farming

The correct answer is: They can lead to rapid pest resistance

Synthetic organic pesticides are designed to target specific pests and often have modes of action that can rapidly lead to pest resistance. This is primarily because many synthetic pesticides act on particular biochemical pathways or processes within the target organisms, and over time, pests can evolve resistance to these chemicals. This phenomenon is influenced by factors such as the frequency and intensity of pesticide application, which can exert selective pressure on pest populations. As a result, some pests may survive treatments and pass resistant traits to future generations. In contrast, the misconception that synthetic organic pesticides are derived solely from natural sources is incorrect, as they are chemically synthesized. The claim that they are always less effective than natural pesticides is not accurate either; in practice, the effectiveness can vary widely based on the specific pesticide and context. Lastly, while it is true that many synthetic organic pesticides cannot be used in organic farming, there are exceptions where certain synthetic substances are allowed under specific circumstances. This nuance illustrates the complexity of pesticide regulations and practices within organic agriculture.