Technical Sheet
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161.49 x 3309C

Gravesac

Origin: France (R. Pouget – INRA Bordeaux – 1962).

VEGETATIVE FEATURES

Leaf: large, wedge-shaped, whole, with an open U-shaped petiolar sinus, the upper side is hairless and the flap is bullous, dark green-colored, opaque; the lower side is bristly, green-colored, with light-green ribs.
Woody shoot: long, branched, with more than average development of secondary shoots, elastic, striated, hairless, pruinose, of gray-brown color.

CULTURAL APTITUDES

Ability to promote fruit setting:

good

Root system regeneration:

acceptable

Adaptability to soil type:
  • compact: good
  • light: good
  • wet: acceptable
  • dry: average
  • stony: good
  • acidic: excellent
  • saline: poor
Branching pattern of the roots:

semi-taproot

Tendency to emission of suckers:

average

Susceptibility to deficiencies or excesses:
  • deficiency of K: sensitive
  • deficiency of Mg: sensitive
  • deficiency of Zn: low sensitivity
  • deficiency of P: senstive
  • deficiency of Fe: low sensitivity
Resistance to root phylloxera:

high

Resistance to leaf phylloxera:

good

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: sensitive
anthracnose: sensitive
eutypa disease: it induces sensitivity

OTHER INFORMATION

Behavior in the nursery: it shows ease in rooting and vegetative resumption; the root system consists mainly of thin and medium-sized roots.
Behavior in the propagation block: it is advisable to grow it on trellis and carefully keep the production capacity of young plants under control.
Behavior in the open field: it impresses good vigor and an acceptable production capacity; it is suitable to dense planting on the row; it induces an early vegetative process and has a constant production. Few cases of decay have been observed in combination with some varieties.