Illinois Pesticide Applicator Practice Test

When raising the boom sprayer, what happens?

1. It increases pesticide coverage

2. It reduces drift and overlap

3. It increases the risk of spray drift

4. It allows for deeper soil penetration

The correct answer is: It increases the risk of spray drift

When raising the boom sprayer, it increases the risk of spray drift primarily due to the higher position of the spray nozzles in relation to the target area. As the boom is elevated, the distance between the nozzles and the plant canopy or ground surface increases, which can lead to greater dispersion of the droplets in the air. This not only allows wind to carry the particles further away from the target area but also creates a potential for off-target application, affecting nearby crops, wildlife, and the surrounding environment. Furthermore, higher spray heights can disrupt the intended deposition pattern of the pesticide, making it less efficient for the intended application. Proper boom height is crucial for minimizing drift, achieving effective coverage, and ensuring that the pesticide reaches its target while adhering to safety regulations. Consequently, understanding the relationship between boom height and spray drift is essential for effective pesticide application and environmental stewardship.