To increase the uniformity of spray droplets, what should be used?

Using nozzles designed for the specific working pressure of your sprayer is essential for achieving uniformity in spray droplets. This choice is based on the fact that different nozzle types and designs are engineered to function optimally at certain pressures, which directly influences the size and distribution of the droplets produced during spraying. When the pressure is matched with the correct nozzle, it allows for a consistent droplet size, which is important for effective pesticide application, coverage, and minimizing drift.

Utilizing nozzles that are not suited for the pressure can lead to variations in droplet size, resulting in some droplets being too large and others too small. This inconsistency can negatively impact the effectiveness of the pesticide application and may even lead to environmental issues due to drift or runoff.

In contrast, while other options might influence application in different ways, they do not directly contribute to the uniformity of spray droplets. Adjusting pesticide concentration, water pressure, or using handheld applicators can lead to various changes in application efficiency or equipment handling, but they aren’t the primary methods for ensuring the uniformity of spray droplets as directly as using the appropriate nozzles designed for the working pressure.