What factors do you need to know to determine the spray application rate?

• A. Speed, Nozzle Flow Rate, and Effective Spray Width
• B. Spray Pressure, Tank Size, and Time
• C. Water Temperature, Humidity, and Air Speed
• D. Pesticide Concentration, Filter Type, and Nozzle Size

Answer: (A)

Understanding spray application rate comes down to how much liquid you deliver and how much area you cover in a given time. The key pieces are the flow coming from the nozzle (gallons per minute), your ground speed (how fast you’re moving across the turf), and the effective spray width (how wide a swath your setup covers in one pass). Together, these determine how many gallons per acre you’re applying: more flow or a wider spray width means more product per area, while going faster means less product per area.

That’s why this set is the best fit. Spray pressure, tank size, and time don’t by themselves set the rate you apply per area. Environmental conditions like temperature and humidity affect droplet behavior but not the actual volume delivered per area. Concentration and nozzle size matter, but without the actual flow rate (and how fast you move and how wide your spray is), you can’t determine the application rate.