Bud mite

Systematic position: The bud mite (specifically Cecidophyopsis ribis) belongs to the phylum Arthropoda, class Arachnida, order Acariformes, and the family Eriophyidae. These are microscopic, worm-like mites that are barely visible to the naked eye, characterized by having only two pairs of legs.

Host plants: The pest primarily targets black currant plants. However, it can also infest red and white currants, as well as gooseberries. In commercial berry production, it is considered one of the most serious pests due to its ability to severely impact yield and spread viral diseases.

Biology and life cycle: Adult females overwinter inside the host's buds. As temperatures rise in spring, the mites resume feeding and reproduction. The most active migration period, when mites leave infested buds to find new ones, occurs during the flowering stage of the currant plant, which is the key window for population spread.

Damage symptoms and harmfulness: The most distinctive sign of infestation is the swelling of dormant buds, which become spherical and resemble small cabbage heads. These infested buds fail to produce healthy foliage or fruit and eventually dry up. Furthermore, the mite acts as a primary vector for the "reversion" virus, which causes plant sterility.

Protection measures:

• Regular inspection and manual removal of swollen buds during early spring.
• Using only certified, mite-free nursery stock for new plantations.
• Application of specialized acaricides during the mite migration phase (before and after flowering).
• Selection of cultivars that show genetic resistance or tolerance to mite colonization.
• Removal and burning of heavily infested bushes to prevent the spread of viral infections to healthy parts of the orchard.