When switching between granular products of different sizes or weights, what must be adjusted in a rotary spreader?

When switching between granular products of different sizes or weights, it is essential to adjust the flow rate in a rotary spreader. This adjustment is necessary because different granule sizes and weights can affect the way the material flows through the spreader and is ultimately distributed on the ground.

Granular products that are heavier or lighter, larger or smaller, will not spread uniformly if the flow rate remains unchanged. A larger granule size may require a higher flow rate for effective distribution, while smaller granules may need a lower flow rate to avoid over-application. Properly adjusting the flow rate ensures accurate application rates, which is crucial for effective pest control and to prevent potential environmental impacts due to over- or under-application of the treatment.

Understanding how different products behave in the spreader allows for better control of application and adherence to best management practices.