A disadvantage of airblast sprayers related to reach is that:

• A. Larger models may not be able to treat hard-to-reach areas.
• B. They always reach every area.
• C. They can operate well in windy conditions.
• D. They do not require calibration.

Answer: (A)

Airblast sprayers rely on a strong airstream to carry droplets into the tree canopy, so how far and how deeply the spray can reach depends on canopy size and structure. With larger trees or dense canopies, droplets have to travel farther and navigate into inner limbs. The outer surfaces tend to take more spray, while the inner, shaded, or opposite sides can remain under-covered. That limited reach is a real disadvantage of airblast systems when dealing with bigger or more complex canopies, because you may not be able to treat all areas adequately from a single position or pass. In practice, this often means needing multiple passes, different angles, or smaller, more maneuverable equipment to get thorough coverage. Calibration is still essential for applying the correct rate, and wind conditions can further complicate coverage, so the idea that reach is unlimited or that other conditions automatically guarantee uniform treatment isn’t accurate.