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Bunchy top appearance of sugarcane is developed due to attack of which insect?
Question

Bunchy top appearance of sugarcane is developed due to attack of which insect?

A.

Sugarcane stem borer

B.

Sugarcane root borer

C.

Sugarcane top borer

D.

Wooly aphid

Correct option is C

✅ (c) Sugarcane top borer ( Scirpophaga excerptalis): • Larvae bore into the central whorl, causing dead heart in early stages and bunchy top in later stages. • Leaves become narrow, erect, and the growth of the central shoot is arrested. • One of the major pests of sugarcane.
❌ (a), (b): • Affect different parts of the cane but don’t cause bunchy top.
❌ (d) Wooly aphid: • Affects leaves and reduces photosynthesis, not responsible for bunchy top.

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