Pine bud moth

Systematic position: The Pine bud moth (Blastesthia turionella) belongs to the order Lepidoptera, family Tortricidae. It is a significant pest of pine species, widely distributed across Eurasia, known for its ability to damage the growth points of young trees.

Host plants: The primary host is the Scots pine (Pinus sylvestris). However, the pest also attacks other pine species including Pinus mugo and Pinus nigra. It primarily affects young stands, saplings in nurseries, and decorative pine plantings in urban environments.

Biology and life cycle: The species undergoes one generation per year. Adult moths emerge in late spring, usually May or June. Eggs are laid individually on the buds. Upon hatching, larvae bore into the bud where they spend the winter. In early spring, larvae resume feeding, hollowing out the interior of the terminal shoot, causing the shoot to die or become severely deformed.

Nature of damage and economic importance: Larvae feeding destroys the terminal bud and the shoot, leading to the formation of multiple leaders or permanent stem crooking. This growth deformity significantly reduces the height and commercial quality of the timber, making it a critical pest in forestry management.

Control measures: Effective management strategies include:

• regular forest health monitoring using pheromone traps;
• chemical control with systemic or contact insecticides during the larval emergence window;
• mechanical removal and destruction of infested buds during the autumn or winter seasons;
• silvicultural practices that promote rapid growth and tree vigor to withstand pest pressure.