The application method of pesticide is determined by which of the following factors?

The application method of pesticide is primarily influenced by the nature and behavior of the pest. Understanding the specific characteristics of the pest, such as its life cycle, habitat, and feeding behavior, is crucial for selecting an effective application technique. For example, if the pest is a foliar feeder, a spray application that targets the leaves will be appropriate. Conversely, if the pest resides in the soil, a different method, such as a soil drench or granular application, would be necessary.

The other factors mentioned, while they can influence the overall effectiveness and safety of pesticide application, do not directly determine the method itself. Time of day and weather conditions, for instance, are important considerations for minimizing drift and increasing efficacy but do not dictate how a pesticide should be applied. The color of the pesticide has no bearing on the choice of application method, as it does not affect the target pest or the pesticide's performance. Understanding the pest behavior provides a foundation for selecting the most suitable and effective application technique.