Istrska debeloplodna

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Corylus avellana L. Common hazel · Fruit crops

also searched as: истрска дебелоплодна

Variety description

10 August 2026

The bush is vigorous, forming a rounded crown with a tendency to spread in width. The fruits are oval-elongated in shape, with an average nut weight of 3–3.5 g. The nuts ripen in clusters of 5. The shell is of medium thickness, brown with grayish pubescence; the husk is significantly longer than the nut and covers it tightly.

The kernel is aromatic, with a yield of about 46%. When roasted, the skin separates from the kernel easily. The variety is characterized by high productivity and moderately early flowering. It is not suitable for mechanical harvesting and requires cross-pollination with the varieties Roman, Hall's Giant, and Tonda Gentile Romana.

The plant is relatively resistant to leaf mites and hazelnut weevil. The variety is relatively winter-hardy and sensitive to drought. It shows the best development on loamy and sandy soils with a high humus content.

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Countries of admission

2 jurisdictions

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

IS FI NO SE EE IE GB DK LV LT NL DE PL BY PT ES FR BE CZ SK UA RU LU CH AT HU MD IT SI HR RS RO MT GR BG CY

active no record

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Maintainer: BF-LJ agr. sadjarstvo MB (SI) Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

SI Slovenia Active

№ COA007

Application

19 June 2012

Registration

31 December 1989

Registry	Number	Application	Registration	Terminated	Status
SI Slovenia	COA007	19 June 2012	31 December 1989	—	Active

Records are sourced from official registry publications. Data sources and legal status

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