What is the recommended nozzle spacing for whirl-chamber nozzles to achieve 100% overlap?

• A. 15-30 inches
• B. 30-45 inches
• C. 40-60 inches
• D. 60-80 inches

Answer: (C)

The recommended nozzle spacing for whirl-chamber nozzles to achieve 100% overlap is 40-60 inches. This spacing is optimal for ensuring that the spray pattern of the nozzles overlaps sufficiently to provide uniform coverage across the target area.

Whirl-chamber nozzles create a rotating pattern that can produce a wide swath of spray. Achieving 100% overlap is crucial in weed management to ensure that all areas are adequately treated and to prevent any gaps where weeds may survive. Spacing the nozzles too far apart could result in untreated areas between the spray patterns, compromising the effectiveness of the application and potentially allowing weeds to thrive.

Therefore, maintaining a spacing of 40-60 inches allows each nozzle's spray pattern to cover the area adequately while maximizing the efficiency of the application process. This range considers the spray characteristics and the environmental impact of drift and off-target application.