When ground or aerial spraying is conducted for mosquito control, droplet size is primarily determined by:

The determination of droplet size during ground or aerial spraying for mosquito control is primarily influenced by the nozzles of the application equipment. Nozzles are designed to create specific droplet sizes based on their configuration and the design features incorporated, such as orifice size and spray angle. Different nozzles will produce varying droplet sizes that can impact the effectiveness of the pesticide application, ensuring that the droplets are suited for targeting the desired mosquito life stages effectively.

While factors like pressure, temperature, and humidity can also play roles in how droplet sizes behave and disperse in the air, the primary control of droplet size rests with the nozzle type used during the spraying operation. This makes the nozzles crucial to the design of the application system, as they directly influence the quality and efficacy of the spraying process.