Chestnut phylloxera

Chestnut phylloxera (Phylloxera castaneivora) is a specific type of insect belonging to the order Hemiptera and the family Phylloxeridae. This microscopic pest specializes in infesting certain tree species, exerting a significant impact on their overall health and productivity.

The primary host plant for this species is the sweet chestnut (Castanea sativa). The pest settles on the leaves, where its feeding process triggers the formation of specific pathological tissue growths known as galls, within which the insects complete the main stages of their life cycle.

The biology of chestnut phylloxera is closely linked to the seasonal development of the plant. The life cycle includes several stages: egg, multiple larval instars, and adults. Females are capable of both sexual and parthenogenetic reproduction, allowing the species to rapidly increase its population density during favorable climatic conditions in the spring and summer.

The damage manifests as leaf blade deformation, yellowing, and premature leaf drop. Mass infestation by the pest leads to tree weakening, reduced photosynthetic capacity, and consequently, stunted shoot growth and lower quality of chestnut fruit yields.

• Regular phytosanitary monitoring of plantations.
• Removal and destruction of heavily infested foliage.
• Application of specialized insecticides during the larval emergence period.
• Boosting tree immunity through mineral fertilization.

Protection measures must be comprehensive in nature. It is crucial to conduct preventive treatments during the bud burst phase, when larvae are most susceptible to chemical treatments, and to maintain a high level of agrotechnical management to improve the resilience of chestnut groves against infestations.