Which type of sprayer is commonly used for treating large trees?

• A. High-pressure hydraulic or airblast sprayers
• B. Hand pump sprayers
• C. Mist blowers
• D. Aerial spraying with fixed-wing planes

Answer: (A)

Treating large trees requires equipment that can reach the tall, dense canopy and deliver spray evenly throughout the foliage. High-pressure hydraulic or airblast sprayers do exactly that: the high-pressure spray is paired with a powerful airstream (from fans or blowers) that pushes droplets through the upper and inner parts of the tree, giving thorough coverage where rough air or simple ground sprayers would miss. Hand pump sprayers can’t supply enough volume or reach; they’re better for small plants or confined spaces. Mist blowers are useful for some broad-area spraying but don’t reliably reach tall canopies in dense trees. Aerial spraying with fixed-wing planes is aimed at large fields and isn’t practical for individual large trees due to precision, drift, and safety concerns. So the common choice for large trees is the high-pressure hydraulic or airblast sprayer.