Which variable has the most significant impact on spray rate during application?

The nozzle flow rate has the most significant impact on spray rate during application because it directly determines the volume of pesticide being delivered per unit of time. This is critical for achieving effective application as the flow rate influences not only how much pesticide reaches the target area but also how consistently and uniformly it covers that area.

Nozzle flow rates are typically measured in gallons per minute (GPM) or liters per minute, and they can vary based on the nozzle type and design. A higher flow rate means a greater volume of pesticide is dispensed, which can be adjusted to meet the requirements of the specific application or target pest.

While other factors like the size of the sprayer, temperature, and wind speed may influence the overall effectiveness of the application or impact how the pesticide behaves once it is airborne, the nozzle flow rate directly controls the amount of pesticide that is applied at any given time. Therefore, managing the nozzle flow rate is crucial for achieving precision in applications.