[R] Corylus avellana L. (Betulaceae).
Fr: Noisetier; Ge: Haselstrauch; Pt: Aveleira; Sp: Avellano; It: Nocciolo.
- A bushy shrub 2 to 4 m in height, soft wood, found at the edges of forests, in copses and in hedges (*) . It is cultivated in Italy especially, in the mountainous region of Avelin. For this reason, the fruit (hazel nut), is also called avelin.
- The principal European producers are Spain, Italy, Portugal, Greece and France.
- It is reproduced by cuttings or suckering.
- A hazel tree reaches peak production at around 8 to 12 years of age, and can live up to 60 years.
- Diseases: the bacterial disease (Xanthomonas campestris pv. corylina) causes serious damage to the branches, (Gloeosporium coryli) desiccates the buds, and is one of the hazel tree most serious diseases.
- Principal European pests: the most damaging are thefilbert bud mite (Phytocoptella avellanae) that destroys the buds and the hazel nut weevil (Curculio nucum) that attacks the nuts, also Gonocerus acuteangulatus Goeze (Het. Coreidae), and Palomena prasina . The large hazel aphid (Corylobium avellanae) colonizes the shoots and buds.
* Hazelnut-tree (Minost C.)
a: leaf heart-shaped, dentate; b: catkin hanging (male flowers); c: female flower; d: bud; e: hazelnuts in their cup.
HYPPZ on line: Species (scientific names), Pests (common names), Glossary, Crops.
HYP3 : HYPP Phytopathology.