Here is some valuable information from Dr. Wes Porter, UGA Extension Precision Ag and Irrigation Specialist.
While planting is going full speed there are many planters that have insecticide hoppers on the back of the row units, and it is critical that these systems are calibrated. Depending on which crop you are planting the chances are high that you will be applying one of these products. While input costs are at an all-time high, we need to ensure products such as these insecticides are properly calibrated so that we are hitting our target rates to ensure adequate efficacy. We want products to work so we must eliminate under applications and ensure we are not wasting products by overapplying.
Calibrating Insecticide Hoppers on Planters | Extension Precision Ag and Irrigation