Raising the boom height tends to...

• A. Raising the boom height reduces overlap and increases drift
• B. Raising the boom height increases drift
• C. Raising the boom height has no effect on drift
• D. Lowering the boom height increases drift

Answer: (A)

Raising the boom height increases drift and tends to reduce how the spray swaths overlap. When the boom is higher, droplets stay in the air longer and are more easily carried off-target by wind and air currents, so more drift occurs. At the same time, the spray pattern becomes more dispersed and less well defined, which means the edges of adjacent swaths don’t line up as neatly, reducing the overlap you rely on for even coverage. In practice, keeping within the recommended boom height for your nozzle and conditions helps minimize drift and maintains better swath overlap for uniform application.