Which color is associated with coarse droplets in nozzle designations?

In nozzle designations, the color yellow is specifically associated with coarse droplets. Coarse droplets are typically larger in size, which helps to minimize drift and ensures that the application materials, such as pesticides or fertilizers, reach the target area more effectively. Using nozzles that produce coarse droplets is particularly important in agricultural practices because they can reduce the risk of off-target application, thereby protecting non-target organisms and the environment.

Understanding droplet size is crucial for aerial applicators since larger droplets are less susceptible to wind drift during application, which can result in more efficient and effective treatment of crops. Yellow nozzles are designated for this purpose and indicate to the applicator that they will be generating larger droplet sizes. This is why yellow is the correct answer in the context of nozzle designations related to coarse droplets.