Application rate varies __________ with ground speed during calibration.

The application rate varies inversely with ground speed during calibration because as the ground speed of the sprayer increases, the amount of herbicide applied per unit area decreases, assuming the application equipment delivers a constant volume of solution. This means that when the speed increases, the sprayer moving over an area will cover more ground in the same amount of time, resulting in less herbicide applied per acre. Conversely, if the ground speed decreases, the applicator spends more time over each area, allowing for more herbicide to be applied. Understanding this relationship is crucial for achieving the desired level of herbicide application and ensuring effective weed control. This inverse relationship is important for applicators to calibrate their equipment correctly and to adjust their speed according to the desired application rate.