What is the impact of lower pressure on spray droplet size?

Lower pressure in a spray system generally leads to the formation of bigger droplet sizes. When the pressure is reduced, the energy available to break the liquid into fine droplets is decreased. As a result, the liquid tends to coalesce into larger droplets, rather than being atomized into smaller ones. This change in droplet size can have significant implications for pesticide application, as larger droplets are less likely to drift and can be more effective for many types of treatments, but they may not provide the coverage needed for certain target pests or plants.

Understanding the relationship between spray pressure and droplet size is essential for optimal pesticide application, as it impacts efficacy, environmental safety, and regulatory compliance. In an application setting, ensuring the correct droplet size is crucial for achieving effective pest control while minimizing the potential for non-target exposure.