Fig bud mite

The fig bud mite (Aceria ficus) is a member of the Eriophyidae family, order Trombidiformes. These microscopic mites are invisible to the naked eye, requiring high-power magnification for proper identification.

The adult mites are vermiform in shape, usually creamy white in color, and extremely small, measuring approximately 0.15–0.2 mm. Despite their tiny size, they are major pests in fig cultivation.

They complete their entire life cycle within the fig buds. The mites feed on the meristematic tissue of the buds, causing the characteristic damage symptoms that eventually inhibit tree growth.

Overwintering occurs as adults inside the bud scales. Once temperatures rise in the spring, the mites resume feeding and reproduction, increasing their population density rapidly.

Dispersal primarily occurs via wind currents or through the movement of infested propagation material, such as cuttings or young nursery plants, which can spread the mite across orchards.

The mite exclusively attacks fig trees (Ficus carica). It causes direct damage to buds, which impacts the structural development of the tree and the overall yield of the fruit.

The most distinctive symptom is the swelling and malformation of the buds. Affected buds often fail to open in the spring, remaining hard and shriveled instead of turning into new shoots.

Leaf symptoms include discoloration, mosaic patterns, and crinkling. The shoots that do manage to emerge from infested buds often appear stunted or twisted.

Fruit set is severely impaired. Infected figs may dry up before maturity, show signs of necrosis, or drop prematurely from the branches, leading to total yield loss.

Chronic infestation weakens the host plant, making it more susceptible to environmental stressors and opportunistic secondary pathogens like various fungal infections.

Chemical control involves the application of systemic acaricides. Treatments should be timed during the migration periods in early spring when the mites are moving between the old and new buds.

Pruning and removing infested wood is a fundamental practice. It is essential to destroy the pruned material by burning to prevent re-infestation of the orchard.

Rigorous selection of clean, certified planting stock is critical for preventing the introduction of this pest. Always quarantine new plants before introducing them to an established site.

Cultural practices, including proper irrigation and fertilization, maintain tree vigor and help the plant withstand the physiological stress caused by the mites.

• Application of systemic acaricides.
• Sanitary pruning and burning of infested buds.
• Selection of certified disease-free cuttings.
• Regular monitoring of tree health during the growing season.