What can be a consequence of using larger droplets in hot and dry conditions?

Using larger droplets in hot and dry conditions can indeed lead to increased evaporation rates. When larger droplets are exposed to high temperatures and low humidity levels, they are more likely to evaporate quickly before they can effectively land on and adhere to the target surface. The heat accelerates the evaporation process, meaning that a significant portion of the liquid may turn into vapor, reducing the liquid's presence where it is needed to be effective. This can ultimately diminish the efficacy of applications such as pesticides or other treatments that rely on liquid contact for their intended effect.

In contrast, smaller droplets tend to remain in liquid form longer under the same conditions, as they have a greater surface area relative to their volume, allowing them to evaporate more slowly. Thus, while using larger droplets might seem advantageous in some contexts, it can lead to inefficiencies and waste of the material being applied due to rapid evaporation.