Rice leaf folder (Cnaphalocrocis medinalis, Pyralidae, Lepiodeptera )

• Sporadic pest , golden or yellowish brown in color, wings have 2-3 wavy line characterized by dark band .

Damaged stage: – larvae

Damaged symptom: –

• fold the leaves and scrapes the leaves inside the
• longitudinal and transparent whitish streaks on damaged leaves
• tubular folded leaves
• leaf tips sometimes fastened to the basal part of leaf
• heavily infested fields appear scorched with many folded

Identification

• Egg :– white egg on leaf and leaf sheath
• Larvae: after hatching feed tender leaf and later stage larvae fasten the longitudinal margin leaf together.
• Pupa :- +nt between the leaf
• Adult :- wings have 2-3wavy lines

Life cycle

Egg–5-6 days –> larvae –18-20 days—> Pupa –5-7 days –> Adult

Management

• Use resistant
• Contact your local agriculture office for an up-to-date list of available varieties.
• Follow rice with a different crop, or fallow
• Avoid
• Flood and plow field after harvesting if
• Remove grassy weeds from fields and
• Reduce density of
• Use balanced fertilizer