QAL Laws & Regulation Practice Exam

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What is a potential problem caused by high temperatures after pesticide application?

  1. Increased economic injury

  2. Reduced pest suppression

  3. Increased phytotoxicity and accelerated pesticide breakdown

  4. Greater need for water

The correct answer is: Increased phytotoxicity and accelerated pesticide breakdown

High temperatures following pesticide application can lead to increased phytotoxicity and accelerated breakdown of the pesticide. Phytotoxicity refers to the potential of a chemical to harm plant tissue, which can be exacerbated by heat, causing the pesticide to become more harmful to plants than intended. The heat can also facilitate faster decomposition of certain pesticides, reducing their effectiveness and longevity in the environment. This accelerated breakdown can diminish the pesticide's ability to control target pests, leading to less effective pest management overall. In contrast, while high temperatures might influence other factors such as economic injury or pest suppression, the direct relationship between heat and increased phytotoxicity and accelerated degradation of pesticides makes this option particularly salient.

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