Uniformity of the spray is determined by which factor?

• A. Nozzle pattern and overlap
• B. Target coverage
• C. Droplet size
• D. Pressure

Answer: (A)

Uniformity of the spray refers to how evenly the droplets are deposited across the target area. This evenness is determined by the nozzle pattern and how the spray plumes from adjacent nozzles overlap. The nozzle pattern describes the shape and spread of the spray from a single nozzle, creating a footprint that must blend with neighboring footprints. Proper overlap ensures there are no gaps and that each part of the target receives a similar amount of product. Droplet size, system pressure, and the intended target coverage influence other aspects like drift, penetration, and total application rate, but they don’t control uniformity as directly as how the patterns are arranged and how much they overlap. To achieve good uniformity in practice, ensure nozzle spacing and boom height produce adequate overlap across the spray width.