What should be done if a pesticide application is interrupted by rain?

Choosing to wait until surfaces are dry before reapplying a pesticide after an interruption by rain is the correct practice due to the potential effects of moisture on pesticide efficacy and safety. When rain occurs during or shortly after a pesticide application, it can wash away or dilute the pesticide on the targeted surfaces, thereby reducing its effectiveness in controlling the intended pests. Additionally, applying pesticides to wet surfaces can lead to uneven distribution and increased runoff, which may pose risks to non-target organisms, waterways, and the environment.

Furthermore, some pesticides require a certain amount of time for absorption into the plant surfaces to be effective. If the surfaces remain wet, it can disrupt this absorption process. Thus, it is crucial to allow the surfaces to dry adequately before resuming the application to ensure that the pesticide works as intended and to minimize environmental impact.

This approach also upholds best management practices and adheres to legal and safety guidelines to ensure responsible pesticide use on the right of way. All these factors emphasize the importance of allowing surfaces to dry before reapplying any pesticide following rain interruption.