Iowa Pesticide Applicator Practice Exam

What distinguishes a rotary spreader from a drop spreader?

1. A rotary spreader uses a spinning rotor to distribute material.

2. A drop spreader uses a fan to spread granules.

3. A rotary spreader is more accurate than a drop spreader.

4. A drop spreader distributes material in a uniform layer.

The correct answer is: A rotary spreader uses a spinning rotor to distribute material.

A rotary spreader is characterized by its mechanism that employs a spinning rotor to effectively distribute material. This design allows the spreader to fling the granular product outward in a wide pattern as it is turned in a circular motion. As a result, the application can cover a larger area and is ideal for tasks that require a more extensive distribution across a lawn or garden. While the other choices may relate to the functionality or differences between spreaders, they do not accurately define the operational principle of a rotary spreader. For instance, a drop spreader does not use a fan; instead, it releases granules directly downward in a controlled manner. Moreover, while it is often a perception that rotary spreaders are less precise due to their wider spread pattern, drop spreaders are favored for their ability to apply materials more evenly, particularly in narrow spaces or alongside flower beds. Therefore, the unique feature of the rotary spreader's spinning rotor mechanism is what makes it distinguishable in this context.