Weather-wise applications can help you save money by saving the pesticide lost through ___________ and ___________.

Choosing the option that refers to drift and run-off highlights two significant processes that can lead to the unintended loss of pesticides during application.

Drift occurs when pesticide particles are carried away from the target area by wind, which can result in insufficient pest control and possible harm to non-target organisms or environments. By applying pesticides during appropriate weather conditions, applicators can minimize drift and ensure that the chemicals remain concentrated on the intended area, thereby enhancing the efficacy of the treatment and reducing waste.

Run-off refers to the movement of pesticides from the target area due to water flow, such as rain or irrigation. This can lead to loss of the pesticide before it can take the desired effect, as well as potential contamination of nearby water bodies. By timing applications to avoid rainy conditions or minimizing soil saturation, applicators can significantly reduce run-off, ensuring that the pesticide works as intended.

Both drift and run-off are critical factors in the effective use of pesticides, and maximizing their control helps to ensure efficient use of resources and environmental safety. Thus, understanding weather conditions and their impact on these two processes is essential for anyone involved in pest control.