Common crops affected
What is it?
Carposina sasakii adults lay eggs on developing fruit; the hatching larvae bore inside to feed, then exit to pupate in the soil or debris. The internal feeding causes gumming, rot, and premature drop. There can be multiple generations per season depending on region and climate.
How to identify it
- Small entry holes in fruit, sometimes with gumming or frass
- Internal tunneling and rot when fruit is cut open
- Premature fruit drop
- Adult moth flights detected with monitoring traps
Damage and how it spreads
Peach fruit moth larvae destroy fruit from the inside and cause heavy drop, with the potential for severe losses in unmanaged orchards. Because the larvae are protected once inside the fruit, the window for control is at egg hatch — so monitoring and timing are central to any successful program.
How to control it
- Monitor adult flights with traps to time control to egg hatch.
- Collect and destroy dropped and infested fruit to break the cycle.
- Cultivate or manage the soil surface to disrupt pupae where appropriate.
- Apply a natural larvicide at egg hatch, before larvae bore into the fruit.
Recommended Vegalab solution: Larva Control
Vegalab Larva Control (oxymatrine) is a fast-acting natural larvicide that kills peach fruit moth larvae on contact or ingestion and acts as an anti-feedant, with a 0-hour REI and no toxicity restrictions. Time applications to egg hatch using trap data, and reapply for each generation. Larva BioControl can be rotated in for resistance management.
| Role | Product | Use |
|---|---|---|
| Primary control | Larva Control | Natural larvicide (foliar) |
| Companion / broader pressure | Larva BioControl | Biological larvicide / rotation partner |
Preventing it next season
Trap every season, sanitize dropped fruit, manage pupation sites, and treat each generation at egg hatch. Keep trees vigorous with balanced nutrition to aid recovery.
Claims and product availability vary by jurisdiction. Always read and follow the product label.