What describes a contact pesticide?

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Study for the Washington State Department of Agriculture MPC Test. Prepare with flashcards and multiple choice questions, each question includes hints and explanations. Get ready for success on your exam!

Multiple Choice

What describes a contact pesticide?

Explanation:
A contact pesticide works only when it meets the pest directly. It acts on the pest’s exterior on contact, so thorough coverage is essential for effectiveness. It doesn’t need to be ingested or taken up by the plant. This distinguishes it from systemic or root-absorbed products, which rely on the chemical moving through the plant or being absorbed by the pest. Sunlight may affect residue, but that doesn’t define how a contact pesticide works. So the best description is that it must touch the pest to be effective.

A contact pesticide works only when it meets the pest directly. It acts on the pest’s exterior on contact, so thorough coverage is essential for effectiveness. It doesn’t need to be ingested or taken up by the plant. This distinguishes it from systemic or root-absorbed products, which rely on the chemical moving through the plant or being absorbed by the pest. Sunlight may affect residue, but that doesn’t define how a contact pesticide works. So the best description is that it must touch the pest to be effective.

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