Virginia Commercial Pesticide Applicators CORE Exam

What is one way a pesticide can injure sensitive plants and animals?

1. Through rapid absorption by roots

2. Via vapor movement over long distances

3. By enhancing soil fertility

4. Through increased microbial activity

The correct answer is: Via vapor movement over long distances

One way that a pesticide can injure sensitive plants and animals is through vapor movement over long distances. Pesticides that are volatile can evaporate and disperse as vapors, potentially impacting non-target organisms far away from the application site. This movement can lead to unintended exposure of sensitive plants and animals, which may suffer detrimental effects even if they are not directly located where the pesticide was applied. Understanding this mechanism is essential, as it highlights the importance of considering environmental factors such as wind patterns and temperature when applying pesticides. Proper precautions, such as selecting less volatile formulations and timing applications to minimize vapor drift, can help mitigate these risks to sensitive species in the surrounding area.