Common crops affected
- Rice
What is it?
Leaffolder larvae fasten a leaf into a tube with silk and feed inside on the green tissue, leaving white, papery streaks. The folded leaf shelters the larva, so early timing matters.
How to identify it
- Leaves folded longitudinally into tubes, fastened with silk.
- White or transparent streaks where larvae have scraped the leaf surface.
- Larvae and frass inside the folds.
- Scorched, papery appearance across the canopy in heavy infestations.
Life cycle & spread
Moths lay eggs on leaves; larvae fold leaves and feed inside through several instars before pupating; multiple generations occur over a rice season.
Conditions that favour it
Lush, high-nitrogen canopies, dense planting and humid conditions favour leaffolder build-up.
Damage and how it spreads
Loss of green leaf area reduces photosynthesis and grain fill; severe infestations at flag-leaf stage are most damaging to yield.
Monitoring & scouting
Scout for fresh folds and feeding streaks, especially on upper and flag leaves; act on young larvae before folds are extensive.
How to control it
- Avoid excess nitrogen, target young larvae early, and ensure coverage of the upper canopy where damage matters most.
Recommended Vegalab solution: Larva Control
Larva Control — natural broad-spectrum larvicide (oxymatrine) applied at early-instar stage before extensive leaf folding, with good upper-canopy coverage.
| Role | Product | Use |
|---|---|---|
| Primary control | Larva Control |
Preventing it next season
Balanced nitrogen, appropriate plant spacing, and early treatment of young larvae before flag-leaf damage.
Claims and product availability vary by jurisdiction. Always read and follow the product label.