Pesticide uses affecting groundwater contamination?

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Multiple Choice

Pesticide uses affecting groundwater contamination?

Explanation:
The amount of pesticide used directly affects how much chemical can move downward with water and reach groundwater. Using high use rates leaves more pesticide in the soil and in solution, which increases the chance that percolating water will carry it down to groundwater, especially if the product is soluble, persistent, or poorly adsorbed to soil. Conditions that amplify leaching—shallow groundwater, heavy rainfall or irrigation soon after application, and certain soil types—make the contamination risk even higher. Lowering the use rate reduces the total mass available to leach, lowering the potential for groundwater contamination.

The amount of pesticide used directly affects how much chemical can move downward with water and reach groundwater. Using high use rates leaves more pesticide in the soil and in solution, which increases the chance that percolating water will carry it down to groundwater, especially if the product is soluble, persistent, or poorly adsorbed to soil. Conditions that amplify leaching—shallow groundwater, heavy rainfall or irrigation soon after application, and certain soil types—make the contamination risk even higher. Lowering the use rate reduces the total mass available to leach, lowering the potential for groundwater contamination.

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