Which three variables affect the amount of material applied per area when calibrating a boom sprayer?

The correct answer encompasses key factors that are fundamental to achieving an accurate application rate when calibrating a boom sprayer.

Nozzle flow rate refers to how much liquid is dispensed through each nozzle over a specified time. This rate is crucial because it directly impacts the volume of herbicide applied to a given area. If the flow rate is too high or too low, the application can either exceed the intended dose or insufficiently address the target area, both of which can lead to ineffective weed control or damage to desired plants.

Ground speed, or how quickly the sprayer moves over the terrain, affects the amount of herbicide that is deposited on the crop or weeds. If the sprayer travels too fast, the area covered may receive less herbicide than intended because there isn't enough time for the nozzles to deliver the correct amount per unit area. Conversely, moving too slowly can lead to over-application, which can be wasteful and potentially harmful to the environment.

Width sprayed is the distance that the boom covers with each pass. This variable also influences the total area that is treated in relation to the amount of herbicide being applied. A wider spray interval covers more ground, thus affecting the overall application rate.

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