Horticultural oils are effective against which pests?

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Study for the South Carolina Turf and Pest Control Category 3 Test. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Horticultural oils are effective against which pests?

Explanation:
Horticultural oils kill pests by smothering them. They lay a film over the insect or mite, blocking breathing openings so the pest cannot respire. This makes them especially effective against small, exposed pests like mites, aphids, and scale crawlers, which can be coated by the oil and killed at many life stages when used as directed. They are not fungicides, so fungi are not affected by these oils. Caterpillars tend to be less reliably controlled because of their tougher bodies or hiding spots, and ground beetles are beneficials that you generally don’t target with oil sprays. Use according to label directions to apply when pests are present and conditions are suitable.

Horticultural oils kill pests by smothering them. They lay a film over the insect or mite, blocking breathing openings so the pest cannot respire. This makes them especially effective against small, exposed pests like mites, aphids, and scale crawlers, which can be coated by the oil and killed at many life stages when used as directed. They are not fungicides, so fungi are not affected by these oils. Caterpillars tend to be less reliably controlled because of their tougher bodies or hiding spots, and ground beetles are beneficials that you generally don’t target with oil sprays. Use according to label directions to apply when pests are present and conditions are suitable.

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