How is swath width determined for broadcast spraying?

The determination of swath width for broadcast spraying is based on the concept of calculating the effective width that the sprayer will cover with each pass. The correct approach involves multiplying the number of nozzles on the boom by the spacing between the nozzles, which gives you the total width in inches that the nozzles will effectively cover. Since swath width is conventionally expressed in feet, dividing this product by 12 converts the measurement from inches to feet.

This method ensures that you account for the coverage provided by each nozzle and the distance between them, resulting in an accurate representation of the area covered in a single pass. Understanding swath width is crucial for efficient application of pesticides, as it helps in planning the number of passes required to adequately cover the treatment area without leaving gaps or overlapping excessively.

Other approaches involve factors that either do not correctly derive swath width from the nozzles or misrepresent the way to calculate it. This makes option D the most accurate and practical method for determining swath width in broadcast spraying scenarios.