Which type of spray application involves rotary spray nozzles or controlled droplet applicators that drop droplets nearly vertically onto the target?

The choice of controlled droplet applicators is correct because these systems are specifically designed to release uniform droplets in a nearly vertical manner, which enhances accuracy and minimizes drift. This application method allows for precise targeting of the intended area, ensuring that the pesticide or liquid fertilizer is applied effectively and efficiently.

Controlled droplet applicators utilize technology that optimizes droplet size and distribution, which is critical in applications where minimizing off-target spray is essential. This is particularly important in turf and ornamental settings, where adjacent plants or areas are sensitive to chemical exposure. By maintaining vertical droplet distribution, controlled droplet applicators reduce the likelihood of drift caused by wind or other environmental factors, leading to better pest control while protecting surrounding flora.

In contrast, atomized sprays generally produce a finer mist that may not fall directly on the target, increasing the risk of drift. Conventional sprays typically rely on a fan pattern that can disperse droplets more wide, and high-pressure sprays can cause droplets to be dispersed too widely or too forcefully, making them less targeted. Hence, the advantages of controlled droplet technology for precision and reduced drift solidify its selection as the correct answer.