An agricultural chemical is applied to soil, but only part reaches its intended target. Some moves downward with water, some is carried away in runoff, some volatilizes, and another fraction is transformed through microbial and chemical reactions. From an environmental-management perspective, what is the most important conclusion from these simultaneous pathways?

Question

Accepted Answer

Soil application does not guarantee that a chemical will remain at the application site; transport and transformation processes can redistribute it among soil, water, and air and may convert it into harmful or harmless products.

Answer

Once applied to soil, an organic chemical has only one possible environmental fate.

Answer

Leaching and runoff are forms of pesticide degradation and therefore always eliminate environmental risk.

Answer

Volatilization permanently removes a pesticide from the environment without creating any possibility of air pollution.

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An agricultural chemical is applied to soil, but only part reaches its intended ...

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