Wisconsin Pesticide Applicator Practice Test

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How can you prevent back-siphoning of pesticide into the water supply?

  1. Adding more pesticide to the water tank

  2. Keeping an air gap or using anti-siphoning devices on garden hoses

  3. Using high-pressure pumps when spraying

  4. Washing the sprayer tank with clean water after use

The correct answer is: Keeping an air gap or using anti-siphoning devices on garden hoses

One important aspect of preventing back-siphoning of pesticide into the water supply is to maintain an air gap or use anti-siphoning devices on garden hoses. This creates a physical barrier between the pesticide and the water supply, preventing any potential contamination. Adding more pesticide to the water tank, using high-pressure pumps, and washing the sprayer tank with clean water after use are all ineffective methods for preventing back-siphoning, as they do not address the root cause of the issue. It is essential to follow proper prevention methods to protect both the environment and public health.

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