What is the significance of maintaining good field-end coverage?

• A. To improve engine fuel efficiency.
• B. To reduce the chance of spray drift.
• C. To prevent bird strikes.
• D. To maximize pesticide residues on the ground.

Answer: (B)

Maintaining good field-end coverage is about making sure the spray reaches the outer edges of the field so nothing substantial is lost beyond the boundary. When the field ends are covered well, droplets deposit where intended, and the amount that escapes with the wind—or drifts to adjacent areas—is greatly reduced. This is crucial because spray drift can move onto neighboring crops, water sources, or sensitive habitats, creating environmental and regulatory risks while also potentially diminishing the effectiveness of the application at the field margin. The goal is to keep the pesticide where it will do the most good and with the least unintended impact, which is exactly what good field-end coverage achieves. Other options aren’t addressed by field-end coverage—engine fuel efficiency is about machine performance, bird strikes relate to wildlife and proximity, and maximizing residues would imply over-application, which is unsafe and inappropriate. The best choice is that good field-end coverage reduces the chance of spray drift.