What is a common method for applying granular formulations?

Granular formulations are typically applied using a horn seeder, which is specifically designed to spread granular materials evenly over a designated area. The horn seeder functions by utilizing gravity and controlled release mechanisms to distribute the granules, making it ideal for applications such as treating aquatic environments where precision is required to ensure effective coverage and minimize waste.

In contrast, diaphragm pumps and piston pumps are primarily used for liquid applications, where the focus is on delivering a spray of liquid pesticides or other chemicals. These devices are not suitable for granular products, as they lack the necessary mechanisms to handle solid materials efficiently. Foggers are also designed for liquid applications, specifically for creating a fine mist of pesticides or herbicides, which does not apply to granules. Therefore, using a horn seeder is the preferred method for applying granular formulations in a controlled and efficient manner.