White grubs targeted by soil-applied systemic insecticides are which life stage?

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Prepare for the Illinois Turf Pesticide Test. Study with flashcards and multiple choice questions enhanced with detailed hints and explanations. Ace your exam effortlessly!

Multiple Choice

White grubs targeted by soil-applied systemic insecticides are which life stage?

Explanation:
White grubs are the larval stage of scarab beetles. They live in the soil and feed on turf roots, which is exactly where soil-applied systemic insecticides travel after being taken up by the plant. When these larvae chew on treated roots, they ingest the insecticide, which kills them. Eggs are not feeding in the soil, pupae are inactive, and adults are above ground and not exposed to root-based systemic residues, so the life stage targeted by this approach is the larvae.

White grubs are the larval stage of scarab beetles. They live in the soil and feed on turf roots, which is exactly where soil-applied systemic insecticides travel after being taken up by the plant. When these larvae chew on treated roots, they ingest the insecticide, which kills them. Eggs are not feeding in the soil, pupae are inactive, and adults are above ground and not exposed to root-based systemic residues, so the life stage targeted by this approach is the larvae.

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