What is the role of rain in the use of soil-applied pesticides?

Rain plays a crucial role in the effectiveness of soil-applied pesticides by helping to activate and wash the pesticide into the soil. When soil-applied pesticides are applied, they often need to be incorporated into the soil to reach the target pests effectively. Rain assists in this process by providing moisture that helps dissolve the pesticide and facilitate its movement into the soil profile. This incorporation enables better contact with pests, such as insects or weed seeds, that reside in or on the soil surface, allowing for more effective pest control. A consistent rainfall following application ensures that the chemicals are adequately activated and can work as intended, maximizing their potential to manage pest populations.