What pest causes irregular brown patches that pull up easily like a carpet?

Study for the Maryland Pesticide Applicator Category 3: Ornamental and Turf Test. Test your knowledge with comprehensive questions. Each question is accompanied by hints and explanations to help you excel. Get exam-ready!

Multiple Choice

What pest causes irregular brown patches that pull up easily like a carpet?

Explanation:
Irregular brown patches that lift up easily like a carpet are produced by root-feeding grubs, specifically white grubs. These larvae chew on the grass roots just below the soil surface, weakening the root system and loosening the turf from the soil. Because the roots are damaged, the turf can’t stay firmly anchored, so damaged patches can be pulled up in sheets like carpet. To verify, inspect the exposed area by lifting a small section of the turf or digging into the root zone and look for C-shaped white grubs in the soil. If you find several grubs per square foot, that pattern of damage is consistent with grub activity and explains why the patches come up so easily. Other pests can cause turf damage too, but their signs differ: billbugs tend to create patches of yellowing turf with damage centered around the stems or near thatch; chinch bugs cause stippling and wilting on sunny grass; mole crickets create tunneling and mounded soil, producing uneven patches rather than pieces that lift out cleanly like carpet.

Irregular brown patches that lift up easily like a carpet are produced by root-feeding grubs, specifically white grubs. These larvae chew on the grass roots just below the soil surface, weakening the root system and loosening the turf from the soil. Because the roots are damaged, the turf can’t stay firmly anchored, so damaged patches can be pulled up in sheets like carpet.

To verify, inspect the exposed area by lifting a small section of the turf or digging into the root zone and look for C-shaped white grubs in the soil. If you find several grubs per square foot, that pattern of damage is consistent with grub activity and explains why the patches come up so easily.

Other pests can cause turf damage too, but their signs differ: billbugs tend to create patches of yellowing turf with damage centered around the stems or near thatch; chinch bugs cause stippling and wilting on sunny grass; mole crickets create tunneling and mounded soil, producing uneven patches rather than pieces that lift out cleanly like carpet.

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