Aglandau

The Aglandau is one of the more important of approximately a hundred cultivars of olives in France.[1] It is grown primarily in Provence, but also as far away as Azerbaijan and Ukraine. The 'Aglandau' is primarily used for production of oil, but can also be eaten. When used as table olives, the fruit is normally called Beruguette. The oil is highly valued for its fruity taste.

Aglandau
Olive (Olea europaea)
Color of the ripe fruitGreen
Also calledBeruguette, Blanquette, Plant d'Aix, Verdale de Carpentras
OriginFrance
Notable regionsProvence
HazardsSaissetia oleae, sooty mold, Spilocaea oleaginea
UseOil and table
Oil contentHigh
FertilitySelf-sterile
Growth formSpreading
LeafElliptic-lanceolate
WeightMedium
ShapeOvoid
SymmetrySlightly asymmetrical

Extent

The 'Aglandau' is common in Provence, particularly in the counties of Aix-en-Provence and Salon-de-Provence.[2] It can also be found in Australia, as well as in Azerbaijan and Ukraine.

Synonyms

Locally, this cultivar is known under a number of different names, including Beruguette, Blanquette, Plant d'Aix, Verdale de Carpentras.[2] In Azerbaijan and Ukraine it is known as Nichitskaia 7.[3] Beruguette is the common name when the 'Aglandau' is served as a table olive.[4]

Characteristics

The 'Aglandau' is a cultivar of medium-to-weak vigour.[5][6] Its growth form is spreading with a dense canopy,[7] and the leaves are flat and elliptic-lanceolate, of medium length and width.[5] The olives are of relatively low weight, with a rounded apex and a truncated base. They are slightly asymmetrical, and ovoid in shape.[5] The stone has a rugose surface, with a rounded apex and a pointed base.[6]

The cultivar is harvested in November and December, before the frost, which can harm the fruit.[4] The trees are often maintained quite low, for ease of access at harvest. This is necessary because the olives are firmly attached to the branches.[4] When fully mature, the colour of the fruit is green.[4] The olive is clingstone – the stone clings to the flesh.[2]

Processing

A dual-use cultivar, the 'Aglandau' is primarily used for extraction of oil, and gives a good yield (19–23%).[4] The taste of the oil is highly valued, and is considered to have a particularly fruity taste.[7] The smell of the oil has alternately been described as "almond", "green apple", and "artichoke".[8] The cultivar is used in several officially approved appellations: such as "AOC Haute Provence", "AOC Pays d'Aix" and "AOC Vallée de Baux".[4]

Agronomy

It is considered a cultivar of medium productivity, with good rooting ability.[7] It has a tendency towards biennial bearing, i.e. that a good yield is followed by a weaker one the next year. This can to a large extent be controlled through pruning.[7]

There is a certain disagreement over the fertility of the 'Aglandau' trees, but generally they are considered self-sterile, so it can take advantage of other local varieties as pollinators.[4][8]

It is vulnerable to certain biological pests, such as the black scale insect of olives Saissetia oleae, sooty mold and the olive leaf-spot fungus Spilocaea oleaginea. Its resistance to the Verticillium dahliae and the Pseudomonas syringae, on the other hand, is good.[9] It has a good tolerance to drought; less so to cold.[10]

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gollark: Exactly, those have SIGNIFICANT effects on apioformic field gradients.
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gollark: I'm sure you'd like to think so.
gollark: But what if apioformicative processes supersede this?

References
  1. "Il existe une centaine de variétés cultivées en France" (There are around one hundred cultivated varieties in France); Courboulex, Michel (2002). Les oliviers (in French). Paris: Éditions Rustica. pp. 29, 43. ISBN 2-84038-635-6.
  2. "Aglandau Olives". Practically Edible. Archived from the original on 2013-01-31. Retrieved 2009-01-17.
  3. "Cultivar name: Aglandau". OLEA Databases. Retrieved 2009-01-17.
  4. Courboulex, Michel (2002). Les oliviers (in French). Paris: Éditions Rustica. pp. 29–30. ISBN 2-84038-635-6.
  5. "Morphological characters for cultivar Aglandau". International Olive Council. Retrieved 2009-01-17.
  6. "Aglandau" (PDF). International Olive Council. Retrieved 2009-01-17.
  7. "Aglandau". Santa Cruz Olive Tree Nursery. Retrieved 2009-01-17.
  8. "Agronomical characters for cultivar Aglandau". OLEA Databases. Retrieved 2009-01-17.
  9. "Susceptibility to biotic stress for cultivar Aglandau". OLEA Databases. Retrieved 2009-01-17.
  10. "Susceptibility to abiotic stress for cultivar Aglandau". OLEA Databases. Retrieved 2009-01-17.
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