Pest on crop
Chestnut Weevil on chestnut
Curculio sayi and Curculio caryatrypes
Weevils whose larvae develop inside chestnut kernels, the leading cause of harvest loss in unmanaged plantings.
- Pest
- Chestnut Weevil
- Scientific name
- Curculio sayi and Curculio caryatrypes
- Crop
- Chestnut
- Total hosts
- 1
Chestnut Weevil on chestnut
Detailed guidance for this section is being prepared. Check back soon.
Signs on chestnut
- ▸ Small entry holes in shells
- ▸ C-shaped white grubs visible when nuts are cracked
- ▸ Larvae emerging from harvested nuts during storage
IPM controls
- ✓ Hot water treatment of harvested nuts (122F for 20 minutes) to kill larvae
- ✓ Prompt harvest and refrigeration
- ✓ Heavy mulch and chickens to reduce overwintering pupae
- ✓ Targeted sprays at adult emergence (timing varies by region)
Other crops affected by chestnut weevil
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