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Erinose
Erinose is caused by Colomerus vitis mites, of the family Eriophidae, which are invisible to the naked eye. The females (in the adult stage) hibernate in the buds and, in spring, they bite the plant’s leaves when these are in an embryonic stage, causing the appearance of erinea. This mite has several generations per year and is able to change its life style: in adverse weather conditions, it can enter deeper into the bud, behaving like a “bud mite”.
Leaves:
- Green blistering that becomes reddish on the upper page of the leaf. On the lower page this area has a dense white or light pink pubescence that later becomes brownish
Buds:
- They deform the terminal shoot and can kill hibernating buds
Cultural control:
- Burn pruning leftovers of attacked grapevines
- Do not use material that might be contaminated
Biological control:
- Promote the presence of phytoseiid mites (predators)
Chemical control:
Winter Treatment:
- summer oil
- malathion + summer oil
Spring / Summer Treatment:
- cyhexatin
- dicofol
- endosulfan
- sulphur
- summer oil
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