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Variety traits

Vigor — Walnut

Juglans regia L.

A trait characterizing the tree's development energy, canopy formation, and annual growth increment. It determines planting density and the balance between vegetative growth and fruiting in walnuts.

In the reference 59 varieties crop Persian walnut, where this is mentioned in the description.

To assess walnut vigor, biometric indicators are used, such as tree height and trunk diameter at 20 years of age, as well as the length of annual shoots in the nursery. Varieties are classified as vigorous (>10–11 m), semi-vigorous (5–9 m), and low-vigor, the latter being most in demand for intensive orchards.

This trait directly influences cultivation technology: vigorous forms require wider spacing to ensure proper light exposure. Excessive vigor often negatively impacts yield and cold hardiness due to delayed shoot lignification; therefore, moderate growth is preferred for mechanized harvesting.

General information about the subject — on the page Vigor.

Sources8

Varieties of Persian walnut mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Senický

Active

Juglans regia L. · Persian walnut

CZ
7 records

Proslavski

Active

Juglans regia L. · Persian walnut

NL
2 records

Vilém

Active

Juglans regia L. · Persian walnut

CZ
4 records

Ciprian Ion

Active

Juglans regia L. · Persian walnut

RO
2 records

Red Phantom

Active

Juglans regia L. · Persian walnut

NL
2 records

Sorrento

Active

Juglans regia L. · Persian walnut

SI
2 records

Buccaneer

Active

Juglans regia L. · Persian walnut

NL
3 records

Hansen

Active

Juglans regia L. · Persian walnut

NL
2 records

Unival

Active

Juglans regia L. · Persian walnut

RO
2 records

Victoria

Active

Juglans regia L. · Persian walnut

CZ
5 records

Portval

Active

Juglans regia L. · Persian walnut

RO
2 records

Purpurovy

Active

Juglans regia L. · Persian walnut

NL
2 records

Cyril

Active

Juglans regia L. · Persian walnut

NL
2 records

Podarunok Valentyny

Terminated

Juglans regia L. · Persian walnut

Khokhlov Serhii IUriiovych

UA
2 records

Pam'iati Pasenkova

Terminated

Juglans regia L. · Persian walnut

Khokhlov Serhii IUriiovych, Yadrov Oleksandr Oleksiiovych,

UA
2 records

Saint-martial

Terminated

Juglans regia L. · Persian walnut

INCONNU (FR)

FR
1 record

Karlyk 5

Terminated

Juglans regia L. · Persian walnut

Khokhlov Serhii IUriiovych

UA
2 records

Kalasharskyi

Terminated

Juglans regia L. · Persian walnut

Tsurkan Ion

UA
1 record

Ela

Active

Juglans regia L. · Persian walnut

BF-LJ agr. sadjarstvo MB (SI)

SI
1 record

Korzheutskyi

Active

Juglans regia L. · Persian walnut

Tsurkan Ion

UA
1 record

Ferzhan

Terminated

Juglans regia L. · Persian walnut

Noelia Rjdri

UA
1 record

Skynoskyi

Terminated

Juglans regia L. · Persian walnut

Tsurkan Ion

UA
1 record