What type of application requires no overlap from subsequent passes?

Broadcast application is characterized by the distribution of pesticides over a wide area, covering an entire field or body of water uniformly. This method is designed to provide comprehensive coverage without the need for overlapping, as it aims to ensure that the treatment reaches all areas equally. The goal is to create a consistent layer of pesticide throughout the target area, which effectively controls aquatic weeds without missing spots or needing additional passes that would lead to overlapping applications.

In contrast, strip applications involve applying products in strips, which naturally creates some degree of overlap to ensure complete coverage. Targeted applications focus on specific areas where problems are identified, which could also lead to overlapping areas if not managed carefully. Spot treatments are localized applications meant for addressing small problem areas and typically do not involve significant overlaps due to their very focused nature.

Thus, the nature of a broadcast application, requiring no overlap, makes it the most appropriate choice for this question.