Certified Landscape Irrigation Auditor

Why are rotor sprinklers preferred for large turf areas?

1. They have lower water requirements

2. They provide efficient coverage over large distances

3. They are easily adjustable for changing weather conditions

4. They have a higher precipitation rate

The correct answer is: They provide efficient coverage over large distances

Rotor sprinklers are preferred for large turf areas primarily because they provide efficient coverage over large distances. This efficiency is achieved through the design of rotor sprinklers which typically emit water in a rotating pattern, allowing them to project water farther than traditional spray sprinklers. This characteristic is particularly advantageous in large areas, as it minimizes the number of units needed to achieve uniform coverage, thereby reducing installation and operational costs. Additionally, rotor sprinklers can handle varying water pressures effectively, allowing them to maintain performance across a range of conditions. By covering more area with fewer sprinklers, they reduce the likelihood of dry spots in the turf, which is crucial for maintaining a healthy lawn. The design also allows for better wind resistance compared to other sprinkler types, ensuring that more water reaches the intended target rather than being lost to evaporation or drift. The other options, while they may present certain benefits, do not encapsulate the primary reason for the preference of rotor sprinklers in large turf areas. Lower water requirements and higher precipitation rates might not be universally applicable as they depend on specific system designs and operational conditions. Similarly, while adjustability for changing weather is an asset, it is secondary to the coverage efficiency that rotor sprinklers provide in expansive turf areas.