What is the difference between rotary and drop spreaders?

The distinction between rotary and drop spreaders primarily lies in their method of delivering the granules. A drop spreader functions by allowing the granules to fall directly down through a gate to the ground beneath it. This results in a precise, controlled application of the material directly over the area being treated, minimizing waste and ensuring that the product is applied evenly in the targeted zone.

In contrast, rotary spreaders use a rotating disk to fling granules outward in all directions, which leads to a wider application pattern. This can sometimes result in less precision, as the granules may spread over a broader area than intended.

While both types of spreaders require calibration for effective use, the method of granule distribution is the key differentiator, making the answer about the drop spreader's mechanism correct. This precision in application is especially valuable when needing to target specific areas without affecting surrounding regions.