If a pesticide is volatile, which drift occurs?

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Study for the California Applicator License Category D Plant Agriculture Test. Utilize quizzes with flashcards and comprehensive explanations. Enhance your knowledge and confidence for the examination!

Multiple Choice

If a pesticide is volatile, which drift occurs?

Explanation:
Volatile pesticides evaporate and become vapors that ride air currents away from the treated area, so the drift is vapor drift. This differs from spray drift, which is due to droplets moving through the air during application, and from leaching or runoff, which are water-related transport processes through soil or overland flow. Since a volatile chemical moves as a gas rather than as droplets or water, vapor drift is the relevant form of drift to consider.

Volatile pesticides evaporate and become vapors that ride air currents away from the treated area, so the drift is vapor drift. This differs from spray drift, which is due to droplets moving through the air during application, and from leaching or runoff, which are water-related transport processes through soil or overland flow. Since a volatile chemical moves as a gas rather than as droplets or water, vapor drift is the relevant form of drift to consider.

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