Which statement about sprayer nozzles is true?

• A. Coarse sized droplets supply maximum coverage of the target
• B. Brass tips should be used when applying abrasive materials
• C. Nozzle material should be selected based on the pesticide formulation
• D. Nozzle type does not affect coverage

Answer: (C)

Material compatibility between the nozzle and the pesticide formulation is crucial. Different formulations have varying solvents, pH, and solids, which can attack or wear nozzle materials differently. Brass tips are common, but many formulations are corrosive to brass or can cause pitting, leading to changes in flow, droplet size, and overall spray performance. Abrasive formulations or suspensions with particulates wear nozzles, so choosing a harder, more abrasion-resistant material (such as stainless steel or a durable plastic) helps maintain consistent spray characteristics and nozzle life. By matching nozzle material to the formulation, you preserve accurate droplet sizes and coverage over time. The other statements aren’t correct because nozzle type does affect coverage through spray pattern and droplet size, coarse droplets do not inherently give maximum coverage and can increase drift or uneven deposition, and brass tips aren’t ideal with abrasive or highly corrosive formulations.