What does leeching refer to in the context of pesticides?

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Leaching refers to the movement of pesticides through the soil, typically as they dissolve in water and travel downward with moisture. This process can transport pesticides away from the target area where they were applied, potentially leading to contamination of groundwater and impacting surrounding ecosystems. Understanding leaching is crucial for pest control operators to ensure that pesticides are used effectively while minimizing environmental risks.

The other concepts mentioned, such as evaporation, accumulation in organisms, and chemical breakdown, do not accurately capture the specific process of leaching, which is distinctly about how pesticides move through soil and water rather than their fate in the environment in other forms.

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