What is transportation in the context of pesticide application?

Transportation in the context of pesticide application refers to the movement of a pesticide beyond its intended target area. This concept is important because it highlights the potential for pesticides to drift or leach away from where they were applied, which can lead to unintended exposure of non-target organisms, including beneficial insects, wildlife, or even humans. Understanding this aspect of pesticide application emphasizes the need for careful application techniques and timing to minimize off-target movement, ensuring the safety of the environment and compliance with regulatory standards. The other options pertain to different processes related to plant biology and soil chemistry, which do not accurately describe the specific phenomenon of pesticide movement during application.